[{"data":1,"prerenderedAt":2109},["ShallowReactive",2],{"blog-list-en":3},[4,121,268,461,550,699,814,926,1000,1132,1247,1358,1474,1586,1759,1850,1970],{"id":5,"title":6,"author":7,"body":8,"category":102,"cover":103,"date":104,"description":105,"extension":106,"featured":107,"meta":108,"navigation":109,"path":110,"readingTime":111,"seo":112,"stem":113,"tags":114,"__hash__":120},"blog_en\u002Fblog\u002Fbsa-epfl-hackathon-2026.md","The Hackathon 2026 at EPFL: StackTrace Takes 2nd on the Belem Capital Track","DeVinci Blockchain",{"type":9,"value":10,"toc":92},"minimark",[11,23,28,31,34,37,41,46,52,55,58,61,64,72,80,84,87],[12,13,14,15,22],"p",{},"On October 10 and 11, 2026, the Blockchain Student Association of EPFL (BSA EPFL) ran ",[16,17,21],"a",{"href":18,"rel":19},"https:\u002F\u002Fhackathon.bsaepfl.ch",[20],"nofollow","The Hackathon",", a 30-hour event in the BC Building of the EPFL campus in Lausanne. 98 hackers submitted 49 projects across tracks on DeFi risk and self-custody wallets, set by the two sponsors, Belem Capital and Swissquote, with a total prize pool of 5,700 dollars. Karim Boukedjar, Maëlann Penhard and Maxime Sempels, three DeVinci Blockchain members studying engineering at ESILV, took 2nd place on the Belem Capital track with StackTrace, a DeFi risk engine, and won 600 dollars.",[24,25,27],"h2",{"id":26},"the-belem-capital-challenge","The Belem Capital challenge",[12,29,30],{},"Belem Capital is an on-chain asset manager based in Luxembourg, running market-neutral yield strategies for professional and institutional investors. Its track, the DeFi Risk Dependency Challenge, came straight from the questions its own risk team works on.",[12,32,33],{},"An on-chain position rarely stands alone. A single position can depend on several protocols, assets, oracles and chains at once, and most of that chain is invisible from the position itself. When one of these components fails, the hard part is not noticing the incident, it is working out what it does to the portfolio, and how fast. Belem Capital asked teams to discover a position's dependencies automatically, estimate the economic impact when one of them breaks, and answer the question a portfolio manager actually asks: stay in the position, or accept the cost of getting out.",[12,35,36],{},"The jury weighted dependency discovery and impact estimation at 30% each, the usefulness of the decision at 25%, and a working demo on real data at 15%.",[24,38,40],{"id":39},"our-winning-project","Our winning project",[42,43,45],"h3",{"id":44},"_2nd-place-belem-capital-track-stacktrace","2nd place, Belem Capital track: StackTrace",[12,47,48],{},[49,50,51],"em",{},"Karim Boukedjar, Maëlann Penhard, Maxime Sempels",[12,53,54],{},"StackTrace takes a real position on Ethereum, rebuilds everything it depends on, prices what each failure would cost, and gives a clear verdict: stay, partially exit, or exit, with the reasons.",[12,56,57],{},"The team's main example is a Pendle principal token (PT-sUSDe) used as collateral on Morpho Blue to borrow USDC. StackTrace rebuilds its dependency graph down seven layers: the lending market, the principal token, the USDe stablecoin and its staked version sUSDe, Ethena as their issuer, then the custodians and exchanges behind it, plus the oracles, the Pendle liquidity pool, the lenders and the Ethereum chain itself. No link in the graph is drawn by hand. Each one comes from an on-chain read at a fixed block, from an API response checked again on-chain, or from an official source with its URL and date. A contract the tool cannot identify is flagged as unresolved rather than guessed.",[12,59,60],{},"From that graph, StackTrace propagates a shock link by link up to the position and measures the loss in dollars, for the borrower and for the lenders. It reproduces the logic of the position's oracle, which only switches to the market price after sixteen hours of divergence, and the liquidation rules of Morpho. The result is a useful finding: what liquidates this position is the duration of a crisis more than its depth. A USDe trading at 0.93 dollars for six hours costs nothing, while the same price held for a full day triggers the liquidation, a loss of about 37,000 dollars. The model also surfaces a risk the position cannot see: an exploit of Pendle would not move the oracle, so there would be no liquidation, but it would leave about 152,000 dollars of bad debt to the lenders.",[12,62,63],{},"The decision rests on a single threshold. StackTrace measures the real cost of exiting on current liquidity, around 850 dollars for this position, and compares it to the potential loss: if the probability of the incident exceeds that ratio, about 1.6% over a week here, it is worth getting out. The team also replayed real USDe crises, including the crash of October 10, 2025, and extended the engine to any wallet, any Morpho vault and the curator book of twelve vaults that Belem Capital shared with participants.",[12,65,66,67],{},"DoraHacks: ",[16,68,71],{"href":69,"rel":70},"https:\u002F\u002Fdorahacks.io\u002Fbuild\u002F49564",[20],"StackTrace",[12,73,74,75],{},"GitHub: ",[16,76,79],{"href":77,"rel":78},"https:\u002F\u002Fgithub.com\u002Fkarim3309\u002FBelemCapital-Epfl-Hackathon",[20],"karim3309\u002FBelemCapital-Epfl-Hackathon",[24,81,83],{"id":82},"what-it-means-for-dvb","What it means for DVB",[12,85,86],{},"Several DVB members made the trip to Lausanne for The Hackathon, and three of them came back with a prize on a track set by a professional asset manager, on a problem close to the quantitative finance taught at ESILV: modelling risk, pricing a loss and turning it into a decision a manager can act on.",[12,88,89],{},[49,90,91],{},"The Hackathon was organized by the Blockchain Student Association of EPFL, with Belem Capital and Swissquote as sponsors.",{"title":93,"searchDepth":94,"depth":94,"links":95},"",2,[96,97,101],{"id":26,"depth":94,"text":27},{"id":39,"depth":94,"text":40,"children":98},[99],{"id":44,"depth":100,"text":45},3,{"id":82,"depth":94,"text":83},"Hackathon","\u002Fblog\u002Fbsa-epfl-hackathon-2026.jpg","2026-10-11","Three DVB members took 2nd place on the Belem Capital track at The Hackathon, run by BSA EPFL in Lausanne, with StackTrace, a DeFi risk engine.","md",false,{},true,"\u002Fblog\u002Fbsa-epfl-hackathon-2026",null,{"title":6,"description":105},"blog\u002Fbsa-epfl-hackathon-2026",[115,116,117,118,119],"DeFi","risk","Ethereum","EPFL","hackathon","6kelPACPKSPJRV6WGnYwEl3pVQCdmToGo6a66C-gmO8",{"id":122,"title":123,"author":7,"body":124,"category":252,"cover":253,"date":254,"description":255,"extension":106,"featured":107,"meta":256,"navigation":109,"path":257,"readingTime":111,"seo":258,"stem":259,"tags":260,"__hash__":267},"blog_en\u002Fblog\u002Ftoken2049-singapore-2026.md","TOKEN2049 Singapore 2026: A Week at Marina Bay Sands and Two Podiums for Agama",{"type":9,"value":125,"toc":242},[126,129,132,136,144,148,151,164,168,177,181,186,189,192,195,202,206,209,212,220,224,227,230,234,237],[12,127,128],{},"In early October 2026, a DeVinci Blockchain delegation flew to Singapore for TOKEN2049, held on October 7 and 8 at Marina Bay Sands. This year, DVB attended as an official Community Partner of the conference.",[12,130,131],{},"The week packed three events into the same venue: TOKEN2049 itself, Sui Basecamp, and TOKEN2049 Origins, the official hackathon of the week. Around them, side events ran every night across the city.",[24,133,135],{"id":134},"two-days-at-token2049","Two days at TOKEN2049",[12,137,138,143],{},[16,139,142],{"href":140,"rel":141},"https:\u002F\u002Fwww.token2049.com\u002F",[20],"TOKEN2049"," is one of the largest crypto conferences in the world, and its Singapore edition takes over Marina Bay Sands for two days. We spent them between the talks, the booths and a lot of conversations with the teams building what comes next.",[24,145,147],{"id":146},"sui-basecamp","Sui Basecamp",[12,149,150],{},"Sui Basecamp, the Sui ecosystem's own flagship event, was held at the same venue. We started with the AI Builders labs, then spent the rest of it with the Sui ecosystem.",[12,152,153,154,158,159,163],{},"Sui has been close to DVB for a while: we hosted a ",[16,155,157],{"href":156},"\u002Fblog\u002Fsui-hackathon-paris-2025","Sui hackathon"," in Paris in November 2025, followed in February 2026 by a ",[16,160,162],{"href":161},"\u002Fblog\u002Fsui-move-bootcamp-paris-2026","Move bootcamp"," funded by the Sui Foundation on the Pôle Léonard de Vinci campus.",[24,165,167],{"id":166},"the-origins-hackathon","The Origins hackathon",[12,169,170,171,176],{},"Right next to the conference, ",[16,172,175],{"href":173,"rel":174},"https:\u002F\u002Fwww.token2049.com\u002Fsingapore\u002F2049-origins",[20],"TOKEN2049 Origins"," brought around 200 builders together for 36 hours, from October 6 to 8. The five best projects of the main track shared $100,000 in AWS credits and presented on the TOKEN2049 stage, while partner tracks from Solana, Cardano, Chainlink and NOWNodes ran alongside it.",[42,178,180],{"id":179},"_2nd-place-best-use-of-solana-agama","2nd place, Best Use of Solana: Agama",[12,182,183],{},[49,184,185],{},"Eden Baudin",[12,187,188],{},"Eden Baudin took 2nd place on the Solana track, worth $3,000, with a Solana version of Agama built during the hackathon.",[12,190,191],{},"Tokenized stocks such as xStocks are native tokens on Solana and trade around the clock, but a holder can only hold them. Agama turns them into a position that grows. The user deposits a tokenized stock, the protocol borrows USDC against it and puts that USDC to work in Agama's private credit vault. Permissionless agents then convert the yield back into more of the same stock, so what grows is the share count, not a stablecoin balance.",[12,193,194],{},"The core logic lives on-chain in a single Anchor program: positions, the lending pool, the vault, borrowing and liquidation are all program rules. Every token uses the confidential transfer extension of Token-2022, so balances and transfer amounts are encrypted, and the zero-knowledge proofs are verified on-chain by Solana itself. A stranger reading the chain sees nothing.",[12,196,74,197],{},[16,198,201],{"href":199,"rel":200},"https:\u002F\u002Fgithub.com\u002Fagamafinance\u002Fagama-solana",[20],"agamafinance\u002Fagama-solana",[24,203,205],{"id":204},"a-big-week-for-agama","A big week for Agama",[12,207,208],{},"Origins was only part of Eden's week. With his cofounder Tom David, Agama also competed at OKX Dev Day, the hackathon of OKX's X Layer network, whose finale took place in Singapore at the start of the week.",[12,210,211],{},"Agama took first place on both of its tracks, including the Build a Market track, and one of them together with Signo. The X Layer version follows the same idea: a user deposits a tokenized stock from the OKX app, Agama borrows USDG against it, the USDG earns yield in a private credit vault, and agents use that yield to keep the borrowing level steady.",[12,213,214,215,219],{},"Agama then pitched on the Startup Village stage of TOKEN2049, as one of the Top 50 startups selected for the NEXUS competition. Earlier this year, the same project won Sui's prize for existing apps at ",[16,216,218],{"href":217},"\u002Fblog\u002Fethglobal-lisbon-2026","ETHGlobal Lisbon 2026",".",[24,221,223],{"id":222},"side-events-and-the-city","Side events and the city",[12,225,226],{},"Side events ran every night, rooftops included. They brought lots of new faces, and a few conversations we will be following up on.",[12,228,229],{},"Singapore itself was part of the trip. The Formula 1 Grand Prix was in town the same week, so we got to see the cars. The streets are as clean as everyone says. The air, less so: the regional haze made it a polluted week.",[24,231,233],{"id":232},"going-as-a-team","Going as a team",[12,235,236],{},"And above all, the DVB crew. Going as a team is what makes these weeks.",[12,238,239],{},[49,240,241],{},"DeVinci Blockchain thanks TOKEN2049 for having us as a Community Partner, and congratulates Eden Baudin, Tom David and the Agama team.",{"title":93,"searchDepth":94,"depth":94,"links":243},[244,245,246,249,250,251],{"id":134,"depth":94,"text":135},{"id":146,"depth":94,"text":147},{"id":166,"depth":94,"text":167,"children":247},[248],{"id":179,"depth":100,"text":180},{"id":204,"depth":94,"text":205},{"id":222,"depth":94,"text":223},{"id":232,"depth":94,"text":233},"Event","\u002Fblog\u002Ftoken2049-singapore-2026.jpg","2026-10-08","DVB spent TOKEN2049 week in Singapore as an official Community Partner, between Sui Basecamp, the Origins hackathon and a big week for Agama.",{},"\u002Fblog\u002Ftoken2049-singapore-2026",{"title":123,"description":255},"blog\u002Ftoken2049-singapore-2026",[142,261,262,263,264,265,266,119],"Singapore","Sui","Solana","X Layer","OKX","Agama","_rI4us3_q57IvkMR43mahQpgSuyNAdoK0tBhwI2KP0g",{"id":269,"title":270,"author":7,"body":271,"category":102,"cover":450,"date":451,"description":452,"extension":106,"featured":107,"meta":453,"navigation":109,"path":454,"readingTime":111,"seo":455,"stem":456,"tags":457,"__hash__":460},"blog_en\u002Fblog\u002Fmonad-blitz-paris-2026.md","Monad Blitz Paris: 19 Projects Shipped in 12 Hours",{"type":9,"value":272,"toc":437},[273,287,290,298,302,311,314,317,321,325,330,333,336,340,345,348,352,356,364,371,375,384,388,393,396,403,407,412,415,422,426,429,432],[12,274,275,276,280,281,286],{},"On Saturday, September 19, ",[16,277,7],{"href":278,"rel":279},"https:\u002F\u002Fdevinciblockchain.com\u002F",[20]," hosted Monad Blitz Paris on the Pôle Léonard de Vinci campus, with the Monad Foundation as co-host. It was the first Paris edition of ",[16,282,285],{"href":283,"rel":284},"https:\u002F\u002Fmonad.xyz\u002Fevents",[20],"Monad Blitz",", the one-day, in-person hackathon format held in cities such as New York, Denver, Seoul and Lisbon. Over 50 builders took part, and 19 projects were shipped between 9 am and 9 pm.",[12,288,289],{},"The Paris edition was agreed with the Monad team in June 2026 at Monad Blitz NYC, where DVB members were building. DeVinci Blockchain then ran the day end to end, from the briefing and the Monad 101 workshop to the vote and the awards. About three in four builders were students, and six in ten were building on Monad for the first time. The Blitz also closed the third DVB Student Cohort, whose participants had spent the Friday on beginner talks and workshops.",[12,291,292,297],{},[16,293,296],{"href":294,"rel":295},"https:\u002F\u002Fdocs.monad.xyz\u002F",[20],"Monad"," is an EVM-compatible layer 1 blockchain that executes transactions in parallel. Its documentation lists a 300 ms block frequency and 600 ms finality. Builders write Solidity with the usual Ethereum tooling, and blocks are short enough for an on-chain action to feel almost instant.",[24,299,301],{"id":300},"how-a-blitz-works","How a Blitz works",[12,303,304,305,310],{},"Teams have at most four members, and every project must be new: no existing codebase, and no code written before the day. The rules ask each team to submit a public GitHub repository, started as a fork of the official ",[16,306,309],{"href":307,"rel":308},"https:\u002F\u002Fgithub.com\u002Fmonad-developers\u002Fmonad-blitz-paris",[20],"monad-blitz-paris"," starter repo, and to deploy the project on Monad testnet.",[12,312,313],{},"Each team then gave a three-minute demo. Participants voted during the pitches and for 15 minutes after the last one. The Paris edition used a capital-allocation vote, in which each voter splits a fictional budget between the projects they back. The guidelines favor new ideas and original mechanics over polish.",[12,315,316],{},"The Monad Foundation funded $3,000 in prizes: $1,500, $1,000 and $500 for the top three.",[24,318,320],{"id":319},"meet-the-winners","Meet the winners",[42,322,324],{"id":323},"_1st-place-street-aura","1st place: Street Aura",[12,326,327],{},[49,328,329],{},"Hugo Thomas, Lancelot Watelle, Clément Darmon",[12,331,332],{},"Street Aura is an on-chain \"aura battle\" between two brainrot characters, played by the whole room from their phones. Players stake MON into a vault, join a random team, earn points in 10-second mini-games and spend them on emotes that drain the other team's aura bar. Every emote is a real Monad transaction.",[12,334,335],{},"There is no game server: the big screen and every phone read the same contract events, so everyone sees the same fight. Session keys let players sign once when they join instead of approving each emote. When a bar hits zero, the winners split the losing team's stakes, and each draws an NFT card that gets rarer the more they took part. Hundreds of transactions land in about 90 seconds of combat.",[42,337,339],{"id":338},"_2nd-place-aura-farming","2nd place: Aura Farming",[12,341,342],{},[49,343,344],{},"Noémie Flament, Nathan Levy, Ilan Martin",[12,346,347],{},"Aura Farming built an app for rating playful videos, deployed like every Blitz project on Monad testnet.",[42,349,351],{"id":350},"_3rd-place-fusée","3rd place: FUSÉE",[12,353,354],{},[49,355,185],{},[12,357,358,359,363],{},"FUSÉE is a mobile rocket crash game: bet, watch the rocket climb, cash out before it explodes. There is no wallet to connect, since the first visit creates one in the browser and tops it up with test MON for gas and 1,000 test USDC. Each flight takes two on-chain transactions, sent with ",[360,361,362],"code",{},"eth_sendRawTransactionSync",", which returns the receipt in a single round trip, so a tap is confirmed in about half a second. Clips of the rapper Kaaris and other French memes react to every flight.",[12,365,74,366],{},[16,367,370],{"href":368,"rel":369},"https:\u002F\u002Fgithub.com\u002Fedenbd1\u002Fjetx-monad",[20],"edenbd1\u002Fjetx-monad",[24,372,374],{"id":373},"jury-favorites-a-trip-to-lisbon","Jury favorites: a trip to Lisbon",[12,376,377,378,383],{},"Alongside the podium, DeVinci Blockchain named two jury favorites, Monad Murder and Bric à Brac. Both teams win a trip to Lisbon for ",[16,379,382],{"href":380,"rel":381},"https:\u002F\u002Fwww.hackmeridian.com\u002F",[20],"HackMeridian",", the Stellar hackathon taking place on October 25 and 26, just before the Meridian conference.",[42,385,387],{"id":386},"monad-murder","Monad Murder",[12,389,390],{},[49,391,392],{},"Fabien Chevallereau",[12,394,395],{},"Monad Murder is a murder mystery game on Monad testnet. Players investigate a crime scene and collect clues, then lock in a hidden accusation through a commit-reveal scheme, so nobody can see or copy it before it is revealed on-chain. The smart contract generates the solution and checks whether each revealed accusation is correct.",[12,397,74,398],{},[16,399,402],{"href":400,"rel":401},"https:\u002F\u002Fgithub.com\u002Flelegendaire\u002Fmonad-murder",[20],"lelegendaire\u002Fmonad-murder",[42,404,406],{"id":405},"bric-à-brac","Bric à Brac",[12,408,409],{},[49,410,411],{},"Gaspard Tanguy, Boris Danailov",[12,413,414],{},"Bric à Brac turns an ordinary room into an absurd live auction. A phone films the room, an AI model recognizes everyday objects, and a selection of them goes on sale as collector's pieces while the audience follows the stream on their phones. Prices fall over time, so waiting makes a lot cheaper, but the first accepted purchase wins. The contract computes the price whenever it is read, so no bot has to lower it, and only test MON with no value changes hands.",[12,416,74,417],{},[16,418,421],{"href":419,"rel":420},"https:\u002F\u002Fgithub.com\u002Fboris94300\u002Fmonad-blitz-G-B",[20],"boris94300\u002Fmonad-blitz-G-B",[24,423,425],{"id":424},"what-the-teams-built","What the teams built",[12,427,428],{},"More than half of the 19 submissions were games, several of them built for the whole room at once: a 2,304-cell canvas repainted live, a fare-dodging party game on the RER B line, an arcade race that spectators boost from their phones. Some teams also took the wallet out of the way by generating and funding a throwaway wallet in the browser, so players never had to install an extension or see a gas fee.",[12,430,431],{},"For DeVinci Blockchain, the Blitz brought an international hackathon format to its own campus, so students could take part without traveling. The two jury favorites head to Lisbon at the end of October.",[12,433,434],{},[49,435,436],{},"Co-hosted by DeVinci Blockchain and the Monad Foundation.",{"title":93,"searchDepth":94,"depth":94,"links":438},[439,440,445,449],{"id":300,"depth":94,"text":301},{"id":319,"depth":94,"text":320,"children":441},[442,443,444],{"id":323,"depth":100,"text":324},{"id":338,"depth":100,"text":339},{"id":350,"depth":100,"text":351},{"id":373,"depth":94,"text":374,"children":446},[447,448],{"id":386,"depth":100,"text":387},{"id":405,"depth":100,"text":406},{"id":424,"depth":94,"text":425},"\u002Fblog\u002Fmonad-blitz-paris-2026.jpg","2026-09-19","DeVinci Blockchain co-hosted the first Paris edition of Monad Blitz with the Monad Foundation: 50+ builders, 19 projects in one day. Meet the winning teams.",{},"\u002Fblog\u002Fmonad-blitz-paris-2026",{"title":270,"description":452},"blog\u002Fmonad-blitz-paris-2026",[296,458,119,459],"Solidity","Paris","KYlnYwQuPhZO1NsNUrN4KryGvaiKU3lezWmIq6KiA2A",{"id":462,"title":463,"author":7,"body":464,"category":252,"cover":538,"date":539,"description":540,"extension":106,"featured":107,"meta":541,"navigation":109,"path":542,"readingTime":111,"seo":543,"stem":544,"tags":545,"__hash__":549},"blog_en\u002Fblog\u002Fstudent-cohort-3.md","DVB Student Cohort 3: From Blockchain Basics to DeFi in One Day",{"type":9,"value":465,"toc":530},[466,469,472,476,479,483,486,489,492,496,499,503,506,510,517,520,523,527],[12,467,468],{},"On Friday, September 18, DeVinci Blockchain held the third edition of the DVB Student Cohort on the Pôle Léonard de Vinci campus, in La Défense. About 100 students spent the day learning how blockchains work, how to keep control of their own keys and how decentralized finance operates. Attendance was free, no prior knowledge was required, and the day was sponsored by Trezor.",[12,470,471],{},"The evening before, DVB had invited students to the DeVinci Blockchain Community Night at Gargalou, in La Défense: a back-to-school evening with a drink on the house and appetizers, to meet the team and members of the association.",[24,473,475],{"id":474},"starting-from-the-fundamentals","Starting from the fundamentals",[12,477,478],{},"The morning opened with the basics: blocks, nodes, consensus and smart contracts. The session explained how transactions are grouped into blocks and chained together, how the computers of a network agree on a single version of that history, and how programs can run on top of it.",[24,480,482],{"id":481},"self-custody-with-trezor","Self-custody with Trezor",[12,484,485],{},"After lunch, Trezor, the company that built the first hardware wallet in 2014, ran the self-custody session. Its team covered what a wallet really is, hot and cold storage, private keys and seed phrases, before an open Q&A.",[12,487,488],{},"A wallet does not hold coins: it holds the private keys that sign transactions. A hot wallet keeps those keys on a device connected to the internet, while a cold wallet, such as a hardware device, keeps them offline. The seed phrase, a list of words generated when the wallet is created, can restore those keys, so anyone who has it controls the funds.",[12,490,491],{},"Trezor hardware wallets were also on offer through a referral contest: the students who brought the most people to the Cohort each won one. In total, participants won more than 20 Trezor hardware wallets.",[24,493,495],{"id":494},"hands-on-defi","Hands-on DeFi",[12,497,498],{},"Later in the afternoon, DVB members led a hands-on workshop on three building blocks of decentralized finance. Automated market makers (AMMs) let users swap tokens against a shared pool of liquidity, with prices set by a formula rather than by an order book. Lending protocols let users deposit assets to earn interest, or borrow against collateral. Yield is what these mechanisms pay to the people who supply the capital.",[24,500,502],{"id":501},"an-alumni-panel-and-a-closing-cocktail","An alumni panel and a closing cocktail",[12,504,505],{},"Four DVB alumni then came back to campus for a panel on their own paths in Web3, and took questions from the students. The day ended with a closing cocktail, which was also the moment to sign up for the next day's hackathon.",[24,507,509],{"id":508},"three-trips-to-lisbon","Three trips to Lisbon",[12,511,512,513,516],{},"Participants could also win one of three trips to HackMeridian in Lisbon, with flights and hotel covered. ",[16,514,382],{"href":380,"rel":515},[20]," is the Stellar hackathon taking place on October 25 and 26 at ONE16, just before the Meridian conference. It has two tracks, Genesis for new ideas and Scale for existing products, and a prize pool of up to $30,000 in XLM.",[12,518,519],{},"Only students whose attendance was recorded on the day were eligible. Shortly before midnight on September 21, DVB froze the list of eligible participants and recorded its SHA-256 hash, a fingerprint that changes if a single letter of the list changes, along with the number of the drand round that would decide the draw. The random value then came from drand, a public randomness network: that round was published at midnight on September 22, after the list was frozen.",[12,521,522],{},"Each participant received a ticket computed from that value and a hash of their email address, and the three lowest tickets won. The next three were named alternates, in order: if a winner withdraws, the place goes to the next one, with no new draw. DVB then published the draw data, so anyone can recompute the result, from the frozen list to the final ranking.",[24,524,526],{"id":525},"back-to-school-week","Back-to-school week",[12,528,529],{},"The Cohort was the second of DVB's three back-to-school events that week: the next day, Saturday, September 19, the same campus hosted Monad Blitz Paris, a 12-hour hackathon co-hosted by DVB and the Monad Foundation, where Cohort participants had priority access.",{"title":93,"searchDepth":94,"depth":94,"links":531},[532,533,534,535,536,537],{"id":474,"depth":94,"text":475},{"id":481,"depth":94,"text":482},{"id":494,"depth":94,"text":495},{"id":501,"depth":94,"text":502},{"id":508,"depth":94,"text":509},{"id":525,"depth":94,"text":526},"\u002Fblog\u002Fstudent-cohort-3.jpg","2026-09-18","About 100 students joined DVB Student Cohort 3 for a free day of blockchain basics, self-custody with Trezor and hands-on DeFi.",{},"\u002Fblog\u002Fstudent-cohort-3",{"title":463,"description":540},"blog\u002Fstudent-cohort-3",[546,115,547,548],"Trezor","self-custody","cohort","tgbM2nzsQkqyNeW8HyMnm6k7tpmVTUQ49_whcC3oa9I",{"id":551,"title":552,"author":7,"body":553,"category":102,"cover":688,"date":689,"description":690,"extension":106,"featured":107,"meta":691,"navigation":109,"path":692,"readingTime":111,"seo":693,"stem":694,"tags":695,"__hash__":698},"blog_en\u002Fblog\u002Fxrpl-lending-protocol-hackathon.md","XRPL Lending Protocol Hackathon: What 45 Builders Shipped in a Weekend",{"type":9,"value":554,"toc":680},[555,568,571,574,577,579,583,588,591,594,597,604,608,613,616,619,626,630,635,638,645,649,657,660,675],[12,556,557,558,561,562,567],{},"On September 12 and 13, ",[16,559,7],{"href":278,"rel":560},[20]," and Ripple hosted the XRPL Lending Protocol Hackathon at ",[16,563,566],{"href":564,"rel":565},"https:\u002F\u002Fwww.esilv.fr\u002Fen\u002F",[20],"ESILV Paris",". The 45 selected builders spent 36 hours exploring and building on top of the Lending Protocol (XLS-66) and Single Asset Vault (XLS-65), the native primitives designed to bring modular lending and liquidity management to the XRP Ledger.",[12,569,570],{},"Applicants underwent a selective screening process led by DeVinci Blockchain, bringing together students from top French and Swiss engineering schools and developers from the broader XRPL community. The hackathon featured two tracks. Track 1 focused on open-ended vaults (V1.0), where deposits and withdrawals occur dynamically and capital recycles into new loans continuously. Track 2 focused on closed-ended vaults (V1.1), a three-phase structure (Subscription, Investment, Redemption) tailored for fixed-term credit products like bonds and institutional credit funds.",[12,572,573],{},"Both tracks ran on a custom hackathon Devnet with rippled 3.4.0-rc1 and all lending amendments enabled. The prize pool was $5,000 in cash, and the top two teams also won travel grants and passes to Swell.",[12,575,576],{},"Beyond building functional applications, every participating team was asked to submit structured developer feedback covering client SDK usability, protocol UX friction, missing primitives, and documentation gaps. That feedback is already being processed to improve the SDKs, tooling, and docs ahead of mainnet activation.",[24,578,320],{"id":319},[42,580,582],{"id":581},"_1st-place-and-overall-winner-orma","1st place and overall winner: Orma",[12,584,585],{},[49,586,587],{},"Team BuzzBallz: Alexandre Lemière, Andrea Gonzalez",[12,589,590],{},"Orma is a third-party solvency reader, credit rating engine, and capital gate for XLS-66 lending vaults. The team identified a critical asymmetry in the protocol: the entity that decides when a vault recognizes a loss also dictates the order in which losses are realized, directly impacting how much investor capital is consumed.",[12,592,593],{},"Orma reads vault solvency directly from ledger state rather than relying on transaction metadata diffs (which can yield misleading results), publishes risk scores as a native XLS-47 Price Oracle, and enforces deposit gating using XLS-70 Credentials. They ran four live Devnet facilities, submitted 40 structured developer findings (7 P0, 19 P1, 14 P2), and contributed an upstream fix to the official lending tutorial.",[12,595,596],{},"The team won $1,700 in cash, plus a travel grant and a pass to Swell.",[12,598,74,599],{},[16,600,603],{"href":601,"rel":602},"https:\u002F\u002Fgithub.com\u002FBuzzBallz\u002Forma",[20],"BuzzBallz\u002Forma",[42,605,607],{"id":606},"_2nd-place-patapim","2nd place: patapim",[12,609,610],{},[49,611,612],{},"Sofiane Ben Taleb, Armand Séchon",[12,614,615],{},"patapim brings agency securities lending natively to the XRP Ledger, without smart contracts. Holders of a tokenized security who carry the right credential subscribe to a fixed-term, closed-ended vault. A lending agent, who owns the vault and its loan broker, posts first-loss capital in the same security, and a market maker borrows the securities for a fee, against cash collateral held in a token escrow. If the securities are not returned, the agent's cover repays the fund. The team also flagged a gap: the protocol has no way to recall a loan before its term, and its developer report proposes one (tfLoanCall).",[12,617,618],{},"The team won $1,000 in cash, plus a travel grant and a pass to Swell.",[12,620,74,621],{},[16,622,625],{"href":623,"rel":624},"https:\u002F\u002Fgithub.com\u002Fgamween\u002Fpatapim",[20],"gamween\u002Fpatapim",[42,627,629],{"id":628},"_3rd-place-bsa-capital","3rd place: BSA Capital",[12,631,632],{},[49,633,634],{},"Stan Stelcher, Youssef Jeddi of Blockchain Student Association, EPFL",[12,636,637],{},"BSA Capital built a compliant marketplace for closed-ended lending funds, with a secondary market that lets an investor sell a position the vault itself keeps locked until redemption. When an investor deposits into a closed-ended vault, their capital is locked until the redemption window opens. BSA Capital provides a way to trade those shares during the investment phase, giving investors a liquidity option without disrupting the underlying vault or its loans. The project used XLS-70 Credentials and XLS-80 Permissioned Domains alongside the core lending primitives.",[12,639,74,640],{},[16,641,644],{"href":642,"rel":643},"https:\u002F\u002Fgithub.com\u002Fyoussef-jeddi\u002FBSA-Capital",[20],"youssef-jeddi\u002FBSA-Capital",[24,646,648],{"id":647},"broader-context-and-testing-road","Broader context and testing road",[12,650,651,652,219],{},"The hackathon was one part of a broader testing process the Lending Protocol has gone through before mainnet. That process includes a Halborn code audit, a $200K Immunefi Attackathon (35,000+ lines of C++ reviewed by security researchers), a red team exercise, 257 independent community test cases with a 100% pass rate, and a Halborn re-audit incorporating all findings. You can read the ",[16,653,656],{"href":654,"rel":655},"https:\u002F\u002Fdev.to\u002Fripplexdev\u002Fthe-road-toward-mainnet-a-security-first-approach-to-xrpl-lending-protocol-3bn6",[20],"full security timeline",[12,658,659],{},"What the hackathon specifically evaluated was developer experience: whether engineers and developers seeing these specifications for the first time could pick them up on a Saturday morning and ship a functional application by Sunday. The structured feedback filed by these teams highlights high-priority DevEx enhancement opportunities and is already directly shaping updates to the SDK, XRPL Explorer, and documentation.",[12,661,662,663,668,669,674],{},"Both open-ended and closed-ended vault amendments (XLS-65 V1.0 and V1.1, alongside XLS-66) are now up for validator voting on the XRP Ledger. Several hackathon projects are actively continuing development toward mainnet deployment once the amendments activate. The next ",[16,664,667],{"href":665,"rel":666},"https:\u002F\u002Fxrpl.org\u002Fcommunity\u002Fevents",[20],"XRPL Hackathon"," takes place October 24 to 25 in New York, right before ",[16,670,673],{"href":671,"rel":672},"https:\u002F\u002Fswell.ripple.com\u002F",[20],"Swell 2026",", featuring Lending and Borrowing as a dedicated track.",[12,676,677],{},[49,678,679],{},"Organised in collaboration with DeVinci Blockchain and Ripple.",{"title":93,"searchDepth":94,"depth":94,"links":681},[682,687],{"id":319,"depth":94,"text":320,"children":683},[684,685,686],{"id":581,"depth":100,"text":582},{"id":606,"depth":100,"text":607},{"id":628,"depth":100,"text":629},{"id":647,"depth":94,"text":648},"\u002Fblog\u002Fxrpl-lending-protocol-hackathon.png","2026-09-13","More than 45 builders explored XRPL's new lending primitives in Paris. Meet the winning projects and see what their feedback means for the protocol.",{},"\u002Fblog\u002Fxrpl-lending-protocol-hackathon",{"title":552,"description":690},"blog\u002Fxrpl-lending-protocol-hackathon",[696,697,119],"XRPL","lending","zXYPKzcyVT3n0IziWkyuVylz8EVkEEqjxpMR73Pxmq0",{"id":700,"title":701,"author":7,"body":702,"category":102,"cover":804,"date":805,"description":806,"extension":106,"featured":107,"meta":807,"navigation":109,"path":217,"readingTime":111,"seo":808,"stem":809,"tags":810,"__hash__":813},"blog_en\u002Fblog\u002Fethglobal-lisbon-2026.md","ETHGlobal Lisbon 2026: Two DVB Projects Win Sui and Uniswap Prizes",{"type":9,"value":703,"toc":797},[704,712,715,718,722,726,730,733,736,739,742,745,754,758,763,766,769,772,775,782,786,789,792],[12,705,706,707,711],{},"From July 24 to 26, a group of DeVinci Blockchain members took part in ",[16,708,218],{"href":709,"rel":710},"https:\u002F\u002Fethglobal.com\u002Fevents\u002Flisbon2026",[20],", held at the Pavilhão Carlos Lopes in Lisbon. The event page listed more than 800 attendees and $100,000 in prizes, including partner prizes from The Graph, World, Hedera, 0G, the Uniswap Foundation, 1inch, Sui and ENS.",[12,713,714],{},"This edition added a second way to compete. Alongside the classic format, where every team starts from an empty repository, a Continuity Track let teams bring a product they had already built, or an open-source repository they maintain, and ship a new feature during the weekend. Some partner prizes were reserved for these teams.",[12,716,717],{},"Two DVB projects came back with prizes, for a total of $2,500.",[24,719,721],{"id":720},"our-winning-projects","Our winning projects",[42,723,725],{"id":724},"winner-sui-prize-for-existing-apps-agama","Winner, Sui prize for existing apps: Agama",[12,727,728],{},[49,729,185],{},[12,731,732],{},"Agama won the \"Best existing app integrating or porting the Sui stack\" prize from Sui, worth $2,000. The prize was open only to Continuity Track teams and rewarded an existing product that integrates part of the Sui stack, or moves to Sui entirely, during the hackathon.",[12,734,735],{},"Agama is a yield product built on private credit, meaning loans made outside public markets. Liquidity providers deposit USDC and receive agUSD, a synthetic dollar backed 1:1 by an on-chain reserve and allocated across six private-credit vaults. Staking agUSD mints sagUSD, a token priced at net asset value (NAV).",[12,737,738],{},"The port built in Lisbon addresses a tension specific to this asset class. Positions, borrower terms and investor identities are confidential by contract and by regulation, yet a fully private system offers no way to check that the dollar is actually backed.",[12,740,741],{},"In Agama's design, positions sit inside a Sphere, a private environment on Sui where visibility depends on the role: a depositor sees only their own position, Agama's risk team sees the full book for compliance, a competitor sees nothing, and no operator has a view of everything. Sui Spheres has no public SDK yet, so the team kept this layer behind a single module that can be swapped for the real one once the SDK ships.",[12,743,744],{},"Only aggregate figures (supply, net asset value and a cryptographic commitment to the totals) are published on-chain, so solvency can be checked without revealing a single position. agUSD is itself a confidential token: balances and transfer amounts are stored encrypted and can only be read with a viewing key, and registration goes through KYC.",[12,746,747,748,753],{},"Deal documents are encrypted with Seal and stored on Walrus, and users can sign in with a Google account through zkLogin. The project runs on Sui testnet, and its ",[16,749,752],{"href":750,"rel":751},"https:\u002F\u002Fethglobal.com\u002Fshowcase\u002Fagama-n6f7r",[20],"ETHGlobal project page"," details the Move packages and the zero-knowledge proofs generated directly in the browser.",[42,755,757],{"id":756},"_3rd-place-best-uniswap-api-integration-umbra","3rd place, Best Uniswap API Integration: Umbra",[12,759,760],{},[49,761,762],{},"Nada Ahmadi",[12,764,765],{},"Umbra took 3rd place, worth $500, in the Best Uniswap API Integration track run by the Uniswap Foundation.",[12,767,768],{},"Umbra is an automatic circuit breaker for DeFi. It watches liquidity pools around the clock and, when a crash or a depeg begins, moves the user's funds out of the pool and into a stablecoin before liquidity dries up. Pool data comes from Uniswap v3 subgraphs, queried through The Graph.",[12,770,771],{},"The core of the project is a risk score called the CBRI, computed from three signals: how fast liquidity is leaving the pool, how one-sided the trading flow is, and how far the price drifts from its peg. The signals are combined so that a single one turning red is enough to trip the breaker. To keep the scoring verifiable, the model and its scores are anchored on 0G's decentralized storage.",[12,773,774],{},"To calibrate the trigger, the project includes an event-driven backtester written in Python during the hackathon. It replays historical on-chain data from the March 2023 USDC depeg and rebuilds pool liquidity from The Graph data. On that replay, Umbra fires 17 hours before the bottom of the depeg, while USDC was still trading at one dollar.",[12,776,74,777],{},[16,778,781],{"href":779,"rel":780},"https:\u002F\u002Fgithub.com\u002Fnadaamd\u002Fumbra",[20],"nadaamd\u002Fumbra",[24,783,785],{"id":784},"what-lisbon-adds-for-dvb","What Lisbon adds for DVB",[12,787,788],{},"The two projects approach risk in on-chain finance from opposite ends. Agama looks for a way to keep private-credit data confidential while still proving the reserve. Umbra tries to get users out of a pool before a crash drains its liquidity.",[12,790,791],{},"The Sui result also extends earlier work with that ecosystem. In February 2026, Eden Baudin and Alban Derouin shared first place at the Sui Move Builder Forge Paris Hackathon with Orizon, at the end of a bootcamp organized by DVB and funded by the Sui Foundation on the Pôle Léonard de Vinci campus. In Lisbon, the Continuity Track set a different test: take a product that already exists and move a core part of it onto Sui in a single weekend.",[12,793,794],{},[49,795,796],{},"DeVinci Blockchain thanks ETHGlobal, the Sui Foundation and the Uniswap Foundation.",{"title":93,"searchDepth":94,"depth":94,"links":798},[799,803],{"id":720,"depth":94,"text":721,"children":800},[801,802],{"id":724,"depth":100,"text":725},{"id":756,"depth":100,"text":757},{"id":784,"depth":94,"text":785},"\u002Fblog\u002Fethglobal-lisbon-2026.jpg","2026-07-26","At ETHGlobal Lisbon 2026, DVB members won $2,500 with Agama, confidential private credit on Sui, and Umbra, a circuit breaker for DeFi pools.",{},{"title":701,"description":806},"blog\u002Fethglobal-lisbon-2026",[811,262,812,115,119],"ETHGlobal","Uniswap","ULk9_663WTWyOWKel197DntyabaSgGUzkVrwuH01VWw",{"id":815,"title":816,"author":7,"body":817,"category":102,"cover":913,"date":914,"description":915,"extension":106,"featured":107,"meta":916,"navigation":109,"path":917,"readingTime":111,"seo":918,"stem":919,"tags":920,"__hash__":925},"blog_en\u002Fblog\u002Fstellar-hacks-real-world-zk.md","Stellar Real-World ZK Hackathon: DeVinci Blockchain Takes 1st and 3rd Place",{"type":9,"value":818,"toc":906},[819,828,831,834,836,840,845,848,851,854,861,865,870,873,876,879,887,891,900,903],[12,820,821,822,827],{},"On July 14, the Stellar Development Foundation announced the winners of ",[16,823,826],{"href":824,"rel":825},"https:\u002F\u002Fdorahacks.io\u002Fhackathon\u002Fstellar-hacks-zk",[20],"Stellar Hacks: Real-World ZK",", an online hackathon hosted on DoraHacks. Two projects from the DeVinci Blockchain community reached the podium: Wraith, by Romain Thépaut and Thomas Hussenet, took 1st place, and Umbra Wallet, built solo by Arthur Barraine, took 3rd. Together, they won $6,250 in XLM.",[12,829,830],{},"The brief was deliberately open: build anything that uses zero-knowledge (ZK) cryptography on Stellar, as long as the ZK does real work and touches Stellar, for example by verifying proofs in a smart contract. Submissions opened on June 15. The organizers counted 678 registered builders and 345 approved projects. A single open track shared a $10,000 prize pool, paid in XLM and split across five places.",[12,832,833],{},"The hackathon builds on recent network upgrades. Protocol 25 (\"X-Ray\") added native functions for the BN254 elliptic curve and Poseidon hashing, and Protocol 26 (\"Yardstick\") added nine more BN254 functions, which makes checking a ZK proof on-chain noticeably cheaper. Together with BLS12-381 support from earlier releases, these functions are building blocks rather than finished privacy features: teams generate proofs off-chain with Noir, Circom or RISC Zero, then deploy a verifier contract on Stellar to check them.",[24,835,721],{"id":720},[42,837,839],{"id":838},"_1st-place-wraith","1st place: Wraith",[12,841,842],{},[49,843,844],{},"Romain Thépaut, Thomas Hussenet",[12,846,847],{},"Wraith is a privacy layer for Stellar. Users deposit assets such as XLM or USDC into a shared shielded pool, where they become notes: commitments stored in an on-chain Merkle tree that reveal nothing about who owns what. From there, they can hold balances, send payments and trade while amounts and counterparties stay hidden. To get paid, a recipient shares a receive code instead of a public address.",[12,849,850],{},"Apart from deposits, which are public, every action (withdrawal, transfer, placing, canceling or matching an order) is gated by a zero-knowledge proof. To move funds, the wallet generates an UltraHonk proof from a circuit written in Noir, showing that the user owns a valid note and is not spending it twice, without revealing the note, the amount or the counterparty. A Soroban smart contract verifies the proof on-chain: if it is valid, the funds move, otherwise nothing happens. Trading runs on a dark-pool order book, where orders stay hidden, are matched at the midpoint and settle atomically.",[12,852,853],{},"The team also wrote an Ethereum light client from scratch, based on BLS12-381, to bring Ethereum value into the shielded pool. ETH locked on the Sepolia testnet arrives on Stellar as a private note, and its origin is proven in two steps: the contract first verifies a BLS signature from Ethereum's sync committee to record a genuine state root, then the mint proves the lock with a Merkle-Patricia storage proof against that root. A single TypeScript SDK powers both the wallet and the off-chain order matcher, and the project runs live on Stellar testnet. Wraith received the first prize, $5,000 in XLM.",[12,855,74,856],{},[16,857,860],{"href":858,"rel":859},"https:\u002F\u002Fgithub.com\u002Fpoki-tcg\u002Fwraith",[20],"poki-tcg\u002Fwraith",[42,862,864],{"id":863},"_3rd-place-umbra-wallet","3rd place: Umbra Wallet",[12,866,867],{},[49,868,869],{},"Arthur Barraine",[12,871,872],{},"Umbra Wallet starts from a tension in on-chain finance: on a public blockchain, every stablecoin payment and DeFi position is visible to anyone, yet regulators do not accept full anonymity. Umbra hides the amount, sender and recipient of each payment with zero-knowledge proofs generated on the user's side (Groth16 on the BN254 curve, with Poseidon hashing).",[12,874,875],{},"What sets it apart is that compliance is enforced by the cryptography itself. Each transfer is encrypted for an authorized auditor's key (ElGamal on the Baby Jubjub curve), and that encryption is constrained inside the same circuit as the transfer proof. A transfer the auditor could not reconstruct cannot produce a valid proof, so it is rejected. Payments stay hidden from the public while remaining readable by the auditor.",[12,877,878],{},"On top of the wallet, Arthur Barraine built a DeFi layer: a swap priced by the Reflector oracle, and a lending and borrowing market with utilization-based interest rates and liquidations. Each position uses its own gasless identity derived from the wallet, and these identities cannot be linked to one another. Umbra Wallet received the third prize, $1,250 in XLM.",[12,880,881,882],{},"Project page: ",[16,883,886],{"href":884,"rel":885},"https:\u002F\u002Fdorahacks.io\u002Fbuidl\u002F46541",[20],"Umbra Wallet on DoraHacks",[24,888,890],{"id":889},"two-takes-on-private-finance","Two takes on private finance",[12,892,893,894,899],{},"Wraith and Umbra Wallet took two of the five prizes. The other places went to ANCHORSHIELD (2nd), zkProofofReserve (4th) and Tukar (5th), and the ",[16,895,898],{"href":896,"rel":897},"https:\u002F\u002Fdorahacks.io\u002Fhackathon\u002Fstellar-hacks-zk\u002Fwinner",[20],"full results"," are published on DoraHacks.",[12,901,902],{},"The two projects address the same question from two angles: how to keep financial activity private on a network best known for stablecoins, cross-border payments and tokenized real-world assets. Wraith brings private payments, trading and bridging together in one shielded pool, while Umbra Wallet pairs private payments with built-in auditor access. These are the real-world uses the organizers had named as a natural fit for ZK on Stellar.",[12,904,905],{},"Stellar has since joined DeVinci Blockchain's partners.",{"title":93,"searchDepth":94,"depth":94,"links":907},[908,912],{"id":720,"depth":94,"text":721,"children":909},[910,911],{"id":838,"depth":100,"text":839},{"id":863,"depth":100,"text":864},{"id":889,"depth":94,"text":890},"\u002Fblog\u002Fstellar-hacks-real-world-zk.jpg","2026-07-14","Two projects from the DeVinci Blockchain community took 1st and 3rd place at Stellar Hacks: Real-World ZK, an online ZK hackathon. Here is how they work.",{},"\u002Fblog\u002Fstellar-hacks-real-world-zk",{"title":816,"description":915},"blog\u002Fstellar-hacks-real-world-zk",[921,922,923,924,119],"Stellar","Soroban","zero-knowledge","privacy","F02S9UeTo5EYGVYJzwgrWiFZpnoV7dprZW0zjJk4va0",{"id":927,"title":928,"author":929,"body":930,"category":990,"cover":991,"date":992,"description":993,"extension":106,"featured":109,"meta":994,"navigation":109,"path":995,"readingTime":111,"seo":996,"stem":997,"tags":998,"__hash__":999},"blog_en\u002Fblog\u002Fwhat-is-dvb.md","Who we are at DeVinci Blockchain","DVB Team",{"type":9,"value":931,"toc":984},[932,935,938,942,945,948,951,954,958,961,964,968,971,975,978,981],[12,933,934],{},"DeVinci Blockchain, or DVB, is the student association that brings Web3 to life on the campus of Pôle Léonard de Vinci, in Paris. We started in 2021 with a simple conviction: blockchain is too important to stay locked inside whitepapers and private Discord servers. So we built a place where students could learn it, question it, and actually create with it.",[12,936,937],{},"Today DVB gathers more than 150 members from engineering, business, and design. Some arrive as complete beginners. Others already ship smart contracts on the weekend. What they share is curiosity and the will to understand a technology that is reshaping finance, ownership, and the internet itself.",[24,939,941],{"id":940},"what-we-actually-do","What we actually do",[12,943,944],{},"We are not a reading club. Most of what happens at DVB happens with your hands on a keyboard.",[12,946,947],{},"Our workshops cover the foundations and the frontier: how a blockchain reaches consensus, how to write and audit a smart contract, how DeFi protocols move billions without a bank in the middle. Each session is built to be useful the next morning, not just impressive on a slide.",[12,949,950],{},"Our Student Cohort is the way in. In one free day with no prerequisites, beginners go from the basics of blockchain to self-custody, then on to a hands-on DeFi workshop. Every new edition raises the bar a little higher.",[12,952,953],{},"Then there are the hackathons, where members spend a weekend turning an idea into something that runs. In 2026, they won prizes at ETHGlobal New York, Cannes and Lisbon, ETHDenver, Stellar Hacks: Real-World ZK, Hack4Privacy by iExec and 50 Partners, and XRPL Commons' Hack the Block. We also host our own hackathons and builder events, with the Sui Foundation, Ripple and the Monad Foundation. Some of those weekends turned into internships. A few turned into careers.",[24,955,957],{"id":956},"a-community-not-just-a-curriculum","A community, not just a curriculum",[12,959,960],{},"A lot of what makes DVB worth joining never appears on a schedule. It is the conversation after a workshop, the partner who stays an extra hour to answer questions, the older member who explains in five minutes what took them a semester to figure out.",[12,962,963],{},"We work closely with companies building real products in Web3. They sponsor our events, host technical sessions, set hackathon challenges, and recruit from our community. For students, this is a direct line to the people actually building the industry. For our partners, it is early access to talent that already speaks the language.",[24,965,967],{"id":966},"who-runs-it","Who runs it",[12,969,970],{},"DVB is run by students, for students. A board handles strategy, education, development, events, partnerships, and communication, and every role is filled by someone who chose to give their time on top of their degree. Nobody here is paid. People stay because they believe in what we are building, and because the community gives back more than it asks.",[24,972,974],{"id":973},"where-we-are-going","Where we are going",[12,976,977],{},"Our goal has not changed since the first meeting in 2021. We want to make blockchain knowledge accessible, honest, and concrete, and to prepare the next generation of builders who will use it well.",[12,979,980],{},"The space is young, loud, and full of noise. Our job is to cut through it, to separate what matters from what only trends, and to give our members the tools and the network to build something real.",[12,982,983],{},"If that sounds like your kind of place, you already belong here. Come to a workshop, join a cohort, or simply say hello on our Discord. The door is open.",{"title":93,"searchDepth":94,"depth":94,"links":985},[986,987,988,989],{"id":940,"depth":94,"text":941},{"id":956,"depth":94,"text":957},{"id":966,"depth":94,"text":967},{"id":973,"depth":94,"text":974},"About","\u002Fgallery\u002Fgroup-photo.png","2026-06-20","Discover DeVinci Blockchain: how a student association became one of the most active Web3 communities in Paris, what we build, and the people behind it.",{},"\u002Fblog\u002Fwhat-is-dvb",{"title":928,"description":993},"blog\u002Fwhat-is-dvb",[],"fdUrdQz5lK88b2sUf4PmFi_9-2MGuDUCfK0nGnFnfaU",{"id":1001,"title":1002,"author":7,"body":1003,"category":102,"cover":1122,"date":1123,"description":1124,"extension":106,"featured":107,"meta":1125,"navigation":109,"path":1126,"readingTime":111,"seo":1127,"stem":1128,"tags":1129,"__hash__":1131},"blog_en\u002Fblog\u002Fethglobal-new-york-2026.md","ETHGlobal New York 2026: Five Prizes for Three DeVinci Blockchain Teams",{"type":9,"value":1004,"toc":1114},[1005,1014,1017,1019,1023,1027,1030,1033,1036,1043,1047,1052,1055,1058,1061,1064,1071,1075,1080,1083,1086,1089,1092,1099,1103,1106],[12,1006,1007,1008,1013],{},"From June 12 to 14, DeVinci Blockchain members took part in ",[16,1009,1012],{"href":1010,"rel":1011},"https:\u002F\u002Fethglobal.com\u002Fevents\u002Fnewyork2026",[20],"ETHGlobal New York 2026",", held at the Metropolitan Pavilion. In 36 hours of hacking, three DVB teams won five prizes from Ledger, Unlink, the Uniswap Foundation, 1inch and Hedera: $13,000 in total, including two first places.",[12,1015,1016],{},"According to ESILV, the event brought together nearly 700 participants from 44 countries, and 486 developers built 232 projects. Besides ETHGlobal's finalist prize for the top 10 teams, 16 partners offered their own prizes and challenges.",[24,1018,721],{"id":720},[42,1020,1022],{"id":1021},"_1st-place-on-ai-agents-x-ledger-and-the-unlink-prize-lunave","1st place on AI Agents x Ledger and the Unlink prize: Lunave",[12,1024,1025],{},[49,1026,185],{},[12,1028,1029],{},"Lunave won first place on AI Agents x Ledger ($3,000) and the Best Unlink Integration into a Major Open-Source App prize ($2,500), for $5,500 in total.",[12,1031,1032],{},"Lunave is a private, AI-managed DeFi yield product custodied by a Ledger. An AI co-pilot proposes a diversified USDC strategy across lending protocols (Aave, Spark, Morpho, Euler); the user validates it on the Ledger, then an autonomous agent maintains that allocation.",[12,1034,1035],{},"Privacy comes from Unlink, an SDK that gives users private balances, transfers and DeFi access on the EVM chains they already use. The core of the project is a native Ledger app that generates the Unlink spending key inside the device's Secure Element, which the key never leaves, and runs Unlink's signature scheme (EdDSA-Poseidon over the BabyJubJub curve) on the chip. Moving USDC into the private pool, sending it privately or depositing it into a yield vault: every step is signed and approved on the device.",[12,1037,74,1038],{},[16,1039,1042],{"href":1040,"rel":1041},"https:\u002F\u002Fgithub.com\u002Fedenbd1\u002Flunave",[20],"edenbd1\u002Flunave",[42,1044,1046],{"id":1045},"_1st-place-on-uniswap-api-and-2nd-place-on-1inch-aqua-lotus","1st place on Uniswap API and 2nd place on 1inch Aqua: Lotus",[12,1048,1049],{},[49,1050,1051],{},"Romain Thépaut, Alban Derouin",[12,1053,1054],{},"Lotus took first place on Best Uniswap API Integration ($4,000) and second place on Build an Aqua App by 1inch ($2,000), for $6,000 in total.",[12,1056,1057],{},"Lotus is a directional liquidity tool for large holders who want to sell on the way up and never buy back. A normal range order is reversible: if the price falls back through it, the position re-buys the asset it sold, which often deters large holders from providing on-chain depth.",[12,1059,1060],{},"With Lotus, the holder spreads tokens across ascending price steps. Buyers fill the cheapest steps first, and the proceeds of a filled step can be claimed but never re-enter the market, a rule the contract enforces with no off-chain bot (keeper) and no price oracle. Meanwhile, the unsold inventory earns yield in an ERC-4626 vault on Morpho or Aave and is pulled out at the moment an order fills.",[12,1062,1063],{},"Buyers reach this ladder through two venues: a Uniswap v4 hook and custom instructions added to 1inch's SwapVM, the programmable swap engine that Aqua apps can build on. Both settle through a single core contract.",[12,1065,881,1066],{},[16,1067,1070],{"href":1068,"rel":1069},"https:\u002F\u002Fethglobal.com\u002Fshowcase\u002Flotus-9vnou",[20],"Lotus on ETHGlobal",[42,1072,1074],{"id":1073},"tokenization-on-hedera-prize-wafer","Tokenization on Hedera prize: Wafer",[12,1076,1077],{},[49,1078,1079],{},"Sofiane Ben Taleb",[12,1081,1082],{},"Wafer was one of the two winners of the Tokenization on Hedera prize, alongside cashmeifyoucan. The $3,000 was split equally, without a ranking, so Wafer received $1,500.",[12,1084,1085],{},"Wafer is a tokenized credit fund on Hedera that finances DePIN (decentralized physical infrastructure) operators, who run networks of real hardware such as GPUs, wireless hotspots or storage. They pay for that hardware upfront but earn their rewards on-chain over months, a timing gap that traditional credit does not underwrite.",[12,1087,1088],{},"Investors deposit into a pool and receive a fund share issued with the Hedera Token Service, the network's native token layer. Only KYC-approved accounts can hold it, and KYC, freeze and pause controls are enforced at the token level. The pool advances HBAR to an operator against its future rewards and mints a claim NFT, the deal's on-chain receipt, burned once the deal is fully repaid. As rewards flow back, the share's net asset value (NAV) rises; a default writes it down and spreads the loss across the pool. Investors can redeem at NAV or sell on SaucerSwap.",[12,1090,1091],{},"The idea rests on one property of DePIN: its cash flow is already on-chain. The operator escrows the device NFT that decides where rewards are paid, so the hardware repays the vault directly. Everything runs on the Hedera testnet; only the reward stream is simulated for the demo.",[12,1093,74,1094],{},[16,1095,1098],{"href":1096,"rel":1097},"https:\u002F\u002Fgithub.com\u002Fgamween\u002FWafer",[20],"gamween\u002FWafer",[24,1100,1102],{"id":1101},"three-projects-three-different-briefs","Three projects, three different briefs",[12,1104,1105],{},"Ledger asked for AI agents that use the device as a trust layer: Lunave keeps both the keys and the final approval on it. The Uniswap Foundation rewarded projects built on the Uniswap API, and 1inch asked for custom Aqua apps, with extra credit for using SwapVM; Lotus answered both with the same order ladder. Hedera favored real-world asset projects with meaningful compliance or lifecycle management, which Wafer handles at the token level and with an on-chain receipt for each deal.",[12,1107,1108,1109,219],{},"For DVB members, international competitions like ETHGlobal are a way to measure their work against teams from the main Web3 ecosystems and to meet the sponsors' engineers: Eden Baudin thanked those at Ledger and Unlink for their mentorship and support throughout the hackathon. ESILV, the engineering school of the Pôle Léonard de Vinci, covered the results in ",[16,1110,1113],{"href":1111,"rel":1112},"https:\u002F\u002Fwww.esilv.fr\u002Fethglobal-new-york-les-equipes-de-devinci-blockchain-remportent-cinq-recompenses-internationales\u002F",[20],"an article on its website",{"title":93,"searchDepth":94,"depth":94,"links":1115},[1116,1121],{"id":720,"depth":94,"text":721,"children":1117},[1118,1119,1120],{"id":1021,"depth":100,"text":1022},{"id":1045,"depth":100,"text":1046},{"id":1073,"depth":100,"text":1074},{"id":1101,"depth":94,"text":1102},"\u002Fblog\u002Fethglobal-new-york-2026.jpg","2026-06-14","Three DeVinci Blockchain teams won five prizes and $13,000 at ETHGlobal New York 2026. Meet Lunave, Lotus and Wafer, and see what each team built.",{},"\u002Fblog\u002Fethglobal-new-york-2026",{"title":1002,"description":1124},"blog\u002Fethglobal-new-york-2026",[811,117,115,1130,119],"tokenization","I-2rQTjCUlDAiFnNyUOX5hvT_ISXMgYHENiTI16Nkmc",{"id":1133,"title":1134,"author":7,"body":1135,"category":252,"cover":1234,"date":1235,"description":1236,"extension":106,"featured":107,"meta":1237,"navigation":109,"path":1238,"readingTime":111,"seo":1239,"stem":1240,"tags":1241,"__hash__":1246},"blog_en\u002Fblog\u002Fbybit-eu-trading-competition.md","DVB x Bybit EU Trading Competition: Three Tracks, Three Winners at Paris Blockchain Week",{"type":9,"value":1136,"toc":1224},[1137,1140,1143,1147,1150,1153,1157,1160,1163,1165,1168,1172,1177,1180,1184,1189,1192,1196,1201,1204,1208,1211,1219],[12,1138,1139],{},"On March 19, 2026, DeVinci Blockchain (DVB) and Bybit EU kicked off the DVB x Bybit EU Trading Competition with a launch event on the Pôle Léonard de Vinci campus. Over the following three weeks, more than 100 students and alumni from the Pôle Léonard de Vinci competed on Bybit EU for a 3,000 USDC prize pool split across three tracks. It was the first trading competition organized by the association.",[12,1141,1142],{},"Bybit EU is a crypto exchange registered in Vienna and licensed under MiCA, the European Union's crypto-asset regulation, by the Austrian Financial Market Authority (FMA).",[24,1144,1146],{"id":1145},"a-launch-event-on-campus","A launch event on campus",[12,1148,1149],{},"More than 100 people registered for the launch event, which started at 5:30 pm on March 19. Ambroise Helaine, France Country Manager at Bybit EU, presented the exchange's vision for Europe. On the DVB side, Sofiane Ben Taleb walked the audience through the three competition tracks and shared some trading insights. A DVB member moderated the evening, introduced the partnership and closed the session with a Kahoot quiz. Every participant left with Bybit EU merchandise.",[12,1151,1152],{},"The session also covered the basics: how crypto markets work, how to use the Bybit EU platform and how to manage risk. Participants could put their questions to the DVB and Bybit EU teams. Margaux Bonetti, Partnership Manager at Bybit EU, helped organize the event.",[24,1154,1156],{"id":1155},"how-the-competition-worked","How the competition worked",[12,1158,1159],{},"Trading ran for 21 days, from March 23 to April 12, 2026. The competition was open to European students, alumni of the Pôle Léonard de Vinci and guests approved by DVB. To enter, participants signed up on the competition's Luma page, opened a Bybit EU account, completed identity verification (KYC) and executed at least one trade within that window.",[12,1161,1162],{},"There were three independent leaderboards, and a participant could compete in all three at once. Each track paid 1,000 USDC to its winner.",[24,1164,320],{"id":319},[12,1166,1167],{},"Prizes were awarded on April 16 at a ceremony during Paris Blockchain Week, in the presence of Bybit EU representatives and DVB members.",[42,1169,1171],{"id":1170},"best-roi","Best ROI",[12,1173,1174],{},[49,1175,1176],{},"Alban Derouin, class of 2028",[12,1178,1179],{},"Best ROI ranked participants by return on investment, the gain on their capital expressed as a percentage. Alban Derouin finished first and took the 1,000 USDC prize.",[42,1181,1183],{"id":1182},"top-volume","Top Volume",[12,1185,1186],{},[49,1187,1188],{},"Hugo Thomas, class of 2028",[12,1190,1191],{},"Top Volume rewarded the highest cumulative trading volume, meaning the total value of all the trades a participant executed over the three weeks. DVB presented it as the track for active traders able to stay engaged until the end. Hugo Thomas won it.",[42,1193,1195],{"id":1194},"quality-trader","Quality Trader",[12,1197,1198],{},[49,1199,1200],{},"Eden Baudin, class of 2026",[12,1202,1203],{},"Quality Trader ranked participants by their average return per trade. In DVB's words, the track was designed for traders who value \"strategy, consistency, and smart decision-making over pure aggression.\" Eden Baudin took first place.",[24,1205,1207],{"id":1206},"a-project-run-by-students","A project run by students",[12,1209,1210],{},"DVB members handled the project from start to finish: negotiating the partnership with Bybit EU, writing the rules, following the regulatory aspects, producing the communication material and running operations for the whole duration of the competition. Ramzy Chibani drove the partnership and co-organized the launch event with Sofiane Ben Taleb.",[12,1212,1213,1214,1218],{},"The launch event also marked the start of an official partnership between Bybit EU and DeVinci Blockchain. ESILV covered the competition in ",[16,1215,1113],{"href":1216,"rel":1217},"https:\u002F\u002Fwww.esilv.fr\u002Ftrading-de-cryptos-de-vinci-blockchain-associe-a-bybits-eu-pour-un-evenement-etudiant-exclusif\u002F",[20]," (in French), which presents it as a concrete example of students working directly with industry players.",[12,1220,1221],{},[49,1222,1223],{},"Trading crypto-assets involves risk of capital loss. Past performance is not indicative of future results. Only invest what you can afford to lose.",{"title":93,"searchDepth":94,"depth":94,"links":1225},[1226,1227,1228,1233],{"id":1145,"depth":94,"text":1146},{"id":1155,"depth":94,"text":1156},{"id":319,"depth":94,"text":320,"children":1229},[1230,1231,1232],{"id":1170,"depth":100,"text":1171},{"id":1182,"depth":100,"text":1183},{"id":1194,"depth":100,"text":1195},{"id":1206,"depth":94,"text":1207},"\u002Fblog\u002Fbybit-eu-trading-competition.jpg","2026-04-16","More than 100 students and alumni traded for three weeks in DeVinci Blockchain's first trading competition, run with Bybit EU. Meet the three winners.",{},"\u002Fblog\u002Fbybit-eu-trading-competition",{"title":1134,"description":1236},"blog\u002Fbybit-eu-trading-competition",[1242,1243,1244,1245],"Bybit EU","trading","competition","Paris Blockchain Week","8XrsOP42KWY74uY-Is4qw-vo-j_E0FnvgH6hflOiOJ0",{"id":1248,"title":1249,"author":7,"body":1250,"category":102,"cover":1348,"date":1349,"description":1350,"extension":106,"featured":107,"meta":1351,"navigation":109,"path":1352,"readingTime":111,"seo":1353,"stem":1354,"tags":1355,"__hash__":1357},"blog_en\u002Fblog\u002Fhack-the-block-2026.md","Hack the Block 2026: Sirius 2.0 Wins the Boundless Prize at Paris Blockchain Week",{"type":9,"value":1251,"toc":1340},[1252,1261,1264,1266,1269,1273,1278,1281,1284,1287,1302,1309,1313,1316,1320,1323,1326,1328,1335],[12,1253,1254,1255,1260],{},"On April 11 and 12, 2026, XRPL Commons ran ",[16,1256,1259],{"href":1257,"rel":1258},"https:\u002F\u002Fwww.xrpl-commons.org\u002Fhackathons\u002Fhack-the-block-2026-paris-blockchain-week-xrpl-hackathon",[20],"Hack the Block",", the flagship hackathon of Paris Blockchain Week, at La Faïencerie in Paris's 10th arrondissement. More than 300 participants spent a 36-hour sprint building on the XRP Ledger across three tracks: Make Waves, Impact Finance and a Secret Track. Ali Ben Yezza and Noé Wales, two DeVinci Blockchain members studying engineering at ESILV (class of 2028), won the Boundless prize with Sirius 2.0, a lending pool for AI datasets.",[12,1262,1263],{},"Open to all levels, the hackathon recommended teams of two to five and offered a total prize pool of more than 10,000 euros. DeVinci Blockchain, a community partner of Paris Blockchain Week 2026, promoted the event to its members in the weeks before.",[24,1265,40],{"id":39},[12,1267,1268],{},"XRPL Commons announced ten winning projects, with Check-Fi, Latch and Edel402 on the overall podium. Alongside the main ranking, the Boundless prize rewarded the use of zero-knowledge technology on XRPL with 1,000 XRP, and it had a single winner.",[42,1270,1272],{"id":1271},"boundless-prize-sirius-20","Boundless prize: Sirius 2.0",[12,1274,1275],{},[49,1276,1277],{},"Ali Ben Yezza, Noé Wales",[12,1279,1280],{},"Sirius 2.0, also called DataLend, applies DeFi lending to AI datasets. A dataset is usually sold once: the provider loses control of it, and the buyer cannot check its quality before paying. Sirius 2.0 lets providers lend access to their data instead.",[12,1282,1283],{},"A provider encrypts the dataset and mints a Multi-Purpose Token (MPT) on XRPL that represents access to it, then deposits that token into a vault (XLS-65) to earn yield. A borrower, typically an AI company or a research lab, takes a fixed-term loan through the XRPL Lending Protocol (XLS-66): it receives the token and a decryption key that only works for the duration of the loan, and pays interest in XRP. Credentials (XLS-70) and Permissioned Domains (XLS-80) restrict who can borrow. When the loan ends, the token returns to the vault and the key is revoked, so ownership of the data never changes hands.",[12,1285,1286],{},"The zero-knowledge layer protects the borrower. The team wrote a program for the RISC Zero zkVM that measures a dataset's quality (number of entries, duplicate rate, schema compliance, completeness of fields) so that the result can be proven without revealing the content. In the team's design, a Smart Escrow on the XRPL WASM devnet, an escrow whose release condition is a small WebAssembly program run by the ledger, lets a dataset into a vault only if that score reaches a minimum threshold.",[12,1288,1289,1290,1295,1296,1301],{},"In ",[16,1291,1294],{"href":1292,"rel":1293},"https:\u002F\u002Fwww.esilv.fr\u002Fhackathon-xrpl-de-vinci-blockchain-recompense-pour-un-projet-zero-knowledge-sur-les-donnees-ia\u002F",[20],"ESILV's article on the project",", Ali Ben Yezza sums up the goal as making data easier to access while keeping strict control over how it is used. The team's ",[16,1297,1300],{"href":1298,"rel":1299},"https:\u002F\u002Fxrpl.at\u002Fsirius",[20],"demo video"," is online.",[12,1303,74,1304],{},[16,1305,1308],{"href":1306,"rel":1307},"https:\u002F\u002Fgithub.com\u002FDVB-Ali-Noe\u002FSirius2.0",[20],"DVB-Ali-Noe\u002FSirius2.0",[24,1310,1312],{"id":1311},"on-the-mona-lisa-stage","On the Mona Lisa stage",[12,1314,1315],{},"Paris Blockchain Week had announced that winning teams would present their work to industry leaders after the hackathon. On April 16, Ali Ben Yezza and Noé Wales pitched Sirius on the Mona Lisa stage of the conference, at the Carrousel du Louvre. For Noé Wales, taking a prototype in front of people from the industry is a fast way to find out how robust a project really is. Paris Blockchain Week has since been renamed Signal Week.",[24,1317,1319],{"id":1318},"from-sui-to-xrpl","From Sui to XRPL",[12,1321,1322],{},"Sirius did not start at Hack the Block. In November 2025, at the Sui hackathon organized by DeVinci Blockchain on the Pôle Léonard de Vinci campus, Ali Ben Yezza and Rayan El Idrissi shared first place with the first version of Sirius, a zero-trust data layer built on Sui with Walrus and Seal that verifies and versions sensitive data, in the manner of Git, before it goes on-chain.",[12,1324,1325],{},"Sirius 2.0 carries that idea over to the XRP Ledger. Sirius is now the off-chain layer that encrypts, versions and serves the data, while XRPL's native primitives handle the lending. The team started the repository on the first day of Hack the Block.",[24,1327,83],{"id":82},[12,1329,1330,1331,1334],{},"Sirius 2.0 was already built on the XRP Ledger's native lending primitives. Five months later, the same building blocks, Single Asset Vaults (XLS-65) and the Lending Protocol (XLS-66), were at the center of the ",[16,1332,1333],{"href":692},"XRPL Lending Protocol Hackathon"," that DeVinci Blockchain hosted in September, sponsored by Ripple.",[12,1336,1337],{},[49,1338,1339],{},"Hack the Block 2026 was organized by XRPL Commons for Paris Blockchain Week.",{"title":93,"searchDepth":94,"depth":94,"links":1341},[1342,1345,1346,1347],{"id":39,"depth":94,"text":40,"children":1343},[1344],{"id":1271,"depth":100,"text":1272},{"id":1311,"depth":94,"text":1312},{"id":1318,"depth":94,"text":1319},{"id":82,"depth":94,"text":83},"\u002Fblog\u002Fhack-the-block-2026.jpg","2026-04-12","Two DVB members won the Boundless prize at Hack the Block, the XRPL hackathon of Paris Blockchain Week, with a lending pool for AI datasets.",{},"\u002Fblog\u002Fhack-the-block-2026",{"title":1249,"description":1350},"blog\u002Fhack-the-block-2026",[696,923,1356,119],"AI","NboR0g5RTsk0P8TGFRGXeLQIc_fmfl_RGR4VHjqTUds",{"id":1359,"title":1360,"author":7,"body":1361,"category":102,"cover":1462,"date":1463,"description":1464,"extension":106,"featured":107,"meta":1465,"navigation":109,"path":1466,"readingTime":111,"seo":1467,"stem":1468,"tags":1469,"__hash__":1473},"blog_en\u002Fblog\u002Fethglobal-cannes-2026.md","ETHGlobal Cannes 2026: DVB Builders Take $6,000 in Prizes on Flare and Hedera",{"type":9,"value":1362,"toc":1455},[1363,1371,1374,1376,1380,1385,1388,1391,1394,1397,1404,1408,1413,1416,1419,1422,1429,1433,1436,1439],[12,1364,1365,1366,1370],{},"From April 3 to 5, 2026, ",[16,1367,811],{"href":1368,"rel":1369},"https:\u002F\u002Fethglobal.com\u002Fevents\u002Fcannes2026",[20]," held its Cannes hackathon at the Palais des Festivals et des Congrès. The event page listed more than 800 attendees and $150,000 in prizes offered by partners such as World, 0G, Arc, Hedera, Flare and Ledger. Teams had 36 hours to build their project.",[12,1372,1373],{},"DeVinci Blockchain members competed in several teams, and two of them came back with prizes. Veil won first place on the Flare track, and AudiThor won a Hedera prize. Together, the two teams took home $6,000.",[24,1375,721],{"id":720},[42,1377,1379],{"id":1378},"_1st-place-on-flare-veil","1st place on Flare: Veil",[12,1381,1382],{},[49,1383,1384],{},"Amaury Mongreville, Ewan Clabaut (CY Tech)",[12,1386,1387],{},"Veil won first place, worth $5,000, in Flare's \"Next generation of apps with TEE Extensions and Smart Accounts\" prize. The project brings traditional credit history into DeFi lending without putting any banking data on-chain.",[12,1389,1390],{},"A user connects a bank account through Plaid. The account history is processed inside a Trusted Execution Environment (TEE), a sealed hardware enclave, which computes a credit score between 0 and 1,000 from four factors: balance health, income stability, spending discipline and account age. Only the score, signed by the enclave, is published on Flare. The Plaid access token is encrypted in the browser before it is sent on-chain, so only the TEE can read it, and the raw financial data never leaves the enclave.",[12,1392,1393],{},"The score then sets how much collateral a borrower must post. A borrower scoring 800 or more needs 80% collateral, while a user without a score stays at the 200% over-collateralization common in DeFi. Borrowers deposit FLR or FXRP and borrow at a loan-to-value ratio adjusted to their score. Positions are priced in real time with Flare's FTSO oracles, and anyone can liquidate a position whose health factor drops below 1.",[12,1395,1396],{},"Through Flare Smart Accounts, XRPL users can take part without a Flare wallet. They send an XRP payment with a structured memo, and a dedicated contract maps their XRPL address to a Flare address. The contracts run on Coston2, Flare's testnet.",[12,1398,74,1399],{},[16,1400,1403],{"href":1401,"rel":1402},"https:\u002F\u002Fgithub.com\u002FVeilFi\u002FVeil",[20],"VeilFi\u002FVeil",[42,1405,1407],{"id":1406},"hedera-prize-audithor","Hedera prize: AudiThor",[12,1409,1410],{},[49,1411,1412],{},"Eva Mirza, Aline Spano, Lina Yahiaoui",[12,1414,1415],{},"AudiThor won Hedera's \"No Solidity Allowed\" prize, which rewarded up to three teams with $1,000 each for applications built only with the Hedera SDKs, without Solidity or smart contracts.",[12,1417,1418],{},"The project changes how code security audits are billed. Instead of a flat fee paid upfront, the client pays in real time for the work actually performed. Audit firms expose their own models and tools on the platform, each service displays its rate before the client commits, and the meter stops when the audit stops.",[12,1420,1421],{},"Each audit session opens a dedicated Hedera escrow account, and micropayments are streamed a few seconds apart through the Hedera SDK. Every payment and every finding is recorded on the Hedera Consensus Service, which leaves a timestamped trail anyone can check on Hashscan. Results are encrypted with Chainlink CRE Confidential HTTP, so only the wallet that started the audit can read them, and any funds left unused in escrow are refunded at the end of the session. For the demo, the team simulated an audit firm's tooling with a multi-agent AI pipeline.",[12,1423,74,1424],{},[16,1425,1428],{"href":1426,"rel":1427},"https:\u002F\u002Fgithub.com\u002FKronoScan\u002FAudiThor",[20],"KronoScan\u002FAudiThor",[24,1430,1432],{"id":1431},"private-data-verifiable-results","Private data, verifiable results",[12,1434,1435],{},"The two projects have something in common. Veil keeps bank data inside an enclave and publishes only a signed score. AudiThor keeps audit findings readable by the client alone, while writing every payment and finding to a public ledger. In both cases, sensitive data stays private and the outcome can still be checked. Privacy, security and TEEs were among the themes ETHGlobal listed for this edition, and Flare's main prize was built around its TEE Extensions and Smart Accounts.",[12,1437,1438],{},"For DeVinci Blockchain, ETHGlobal Cannes came less than two months after the ETHGlobal Happy Hour Paris, which the association co-hosted with ETHGlobal on February 12, 2026, on the Pôle Léonard de Vinci campus. The evening had no talks and no panels: the idea was to let students, builders and people from the Ethereum and wider Web3 ecosystem meet ahead of the hackathon.",[12,1440,1441],{},[49,1442,1443,1444,1449,1450,219],{},"Results and project descriptions: ETHGlobal showcase pages for ",[16,1445,1448],{"href":1446,"rel":1447},"https:\u002F\u002Fethglobal.com\u002Fshowcase\u002Fveil-9ay5q",[20],"Veil"," and ",[16,1451,1454],{"href":1452,"rel":1453},"https:\u002F\u002Fethglobal.com\u002Fshowcase\u002Faudithor-ntedc",[20],"AudiThor",{"title":93,"searchDepth":94,"depth":94,"links":1456},[1457,1461],{"id":720,"depth":94,"text":721,"children":1458},[1459,1460],{"id":1378,"depth":100,"text":1379},{"id":1406,"depth":100,"text":1407},{"id":1431,"depth":94,"text":1432},"\u002Fblog\u002Fethglobal-cannes-2026.jpg","2026-04-05","At ETHGlobal Cannes 2026, Veil took first place on the Flare track and AudiThor won a Hedera prize. Here is what both teams built.",{},"\u002Fblog\u002Fethglobal-cannes-2026",{"title":1360,"description":1464},"blog\u002Fethglobal-cannes-2026",[811,1470,1471,1472,119],"Flare","Hedera","TEE","_2_lJ6awUHvCJOLUvFBTVRkKK36p4dYuqZZp2ddD4EU",{"id":1475,"title":1476,"author":7,"body":1477,"category":252,"cover":1573,"date":1574,"description":1575,"extension":106,"featured":107,"meta":1576,"navigation":109,"path":1577,"readingTime":111,"seo":1578,"stem":1579,"tags":1580,"__hash__":1585},"blog_en\u002Fblog\u002Ffuture-of-the-euro-stablecoins.md","The Future of the Euro: Stablecoins and the Digital Euro Debated in Paris",{"type":9,"value":1478,"toc":1567},[1479,1486,1489,1492,1496,1499,1502,1505,1509,1512,1525,1534,1537,1540,1544,1547,1551,1554,1562],[12,1480,1481,1482,1485],{},"On March 10, 2026, Sopra Steria and the Institut des Crypto-Actifs of the Pôle Léonard de Vinci held ",[49,1483,1484],{},"L'avenir de l'euro : stablecoins et euro numérique"," (The Future of the Euro: Stablecoins and the Digital Euro) at Sopra Steria's offices on Avenue Kléber, in Paris. From 2 pm to 7 pm, keynotes and round tables brought together speakers from finance, law, technology and academic research to look at how digital money is changing payments in Europe.",[12,1487,1488],{},"DeVinci Blockchain took part in organizing the afternoon and had two members of its board in the lineup. Romain Thépaut was among the speakers as president of DVB. Alban Derouin, an ESILV student and vice-president of DVB, moderated the first round table, dedicated to stablecoin use cases in B2B.",[12,1490,1491],{},"The afternoon also featured Jacques Favier, author and historian; Adli Takkal Bataille, executive director and co-founder of Usual; Anne Maréchal, partner at the law firm De Gaulle Fleurance; and Thibault Verbiest, president of Paytend and lawyer at Dalaw Avocats, who served as master of ceremonies.",[24,1493,1495],{"id":1494},"two-kinds-of-digital-money","Two kinds of digital money",[12,1497,1498],{},"Stablecoins are crypto-assets whose value is pegged to a currency or to a basket of assets. They are already opening up new models for cross-border payments and treasury management.",[12,1500,1501],{},"The digital euro is a planned central bank digital currency (CBDC). The European Central Bank presents it as a digital form of cash that would be issued by the central bank and available to everyone in the euro area. The ECB is preparing a pilot for 2027 and aims to be ready for a potential first issuance in 2029, provided the necessary EU legislation is adopted in 2026.",[12,1503,1504],{},"Speakers looked at how the two could coexist, and at the questions that follow: the business models behind stablecoins, regulation and compliance, European monetary sovereignty, and the balance between innovation and financial stability. Nicolas Barbaroux, an economist at the Banque de France, brought an institutional perspective drawn from the Banque de France's work on CBDCs.",[24,1506,1508],{"id":1507},"stablecoins-for-businesses","Stablecoins for businesses",[12,1510,1511],{},"The first round table, titled \"Stablecoins : cas d'usage en BtoB\", gathered three panelists around Alban Derouin:",[1513,1514,1515,1519,1522],"ul",{},[1516,1517,1518],"li",{},"Guillaume Yribarren, head of consulting at Galitt by Sopra Steria, the group's payments specialist",[1516,1520,1521],{},"Jérôme Ajdenbaum, director at Iteon",[1516,1523,1524],{},"Victor Charpiat, head of legal and compliance at Spiko, which issues tokenized money market funds used for cash management",[12,1526,1527,1528,1533],{},"The program approached B2B use through three angles: cash management, cross-border payments and corporate treasury. In ",[16,1529,1532],{"href":1530,"rel":1531},"https:\u002F\u002Fwww.linkedin.com\u002Fposts\u002Fnirmal-parthiban-232688a8_soprasteria-tech-innovation-activity-7437454934649950208-4iJ8",[20],"a video recap posted on LinkedIn"," the day after the event, one attendee highlighted two points from the discussions.",[12,1535,1536],{},"The first is speed. A SWIFT transfer sent on a Friday evening may only arrive on Monday or even Tuesday, while a stablecoin transfer settles within seconds, depending on the blockchain used.",[12,1538,1539],{},"The second is the cost of getting in and out. Someone sending funds from Argentina to Europe with stablecoins first has to convert local currency into stablecoins (the on-ramp), then make the transfer, then convert back into fiat currency on arrival (the off-ramp). Those two conversions are where the fees add up today.",[24,1541,1543],{"id":1542},"the-european-framework","The European framework",[12,1545,1546],{},"Legal questions tied to the European regulatory framework were also on the agenda. MiCA, the Markets in Crypto-Assets regulation, has applied in full across the EU since December 2024. It sets authorization and disclosure rules for crypto-asset issuers and service providers, and classifies stablecoins that reference a single official currency as e-money tokens.",[24,1548,1550],{"id":1549},"students-and-industry-in-the-same-room","Students and industry in the same room",[12,1552,1553],{},"The audience brought together students from the Pôle Léonard de Vinci, future engineers from other grandes écoles and professionals from the financial sector. The afternoon ended with a cocktail for attendees and speakers.",[12,1555,1556,1557,219],{},"The Institut des Crypto-Actifs, represented at the event by its director Cyril Grunspan and its scientific director Martino Grasselli, carries out research on digital assets, blockchain and digital monetary systems at the Pôle. For DeVinci Blockchain, it was a chance to look at the business and regulatory side of a technology its members usually approach through workshops and hackathons. ESILV published ",[16,1558,1561],{"href":1559,"rel":1560},"https:\u002F\u002Fwww.esilv.fr\u002Fsopra-steria-et-linstitut-des-crypto-actifs-conference-sur-leuro-numerique-et-les-stablecoins\u002F",[20],"its own account of the conference",[12,1563,1564],{},[49,1565,1566],{},"Organized by Sopra Steria in partnership with the Institut des Crypto-Actifs of the Pôle Léonard de Vinci.",{"title":93,"searchDepth":94,"depth":94,"links":1568},[1569,1570,1571,1572],{"id":1494,"depth":94,"text":1495},{"id":1507,"depth":94,"text":1508},{"id":1542,"depth":94,"text":1543},{"id":1549,"depth":94,"text":1550},"\u002Fblog\u002Ffuture-of-the-euro-stablecoins.jpg","2026-03-10","Sopra Steria and the Institut des Crypto-Actifs gathered experts on stablecoins and the digital euro. DVB moderated the B2B round table.",{},"\u002Fblog\u002Ffuture-of-the-euro-stablecoins",{"title":1476,"description":1575},"blog\u002Ffuture-of-the-euro-stablecoins",[1581,1582,1583,1584],"stablecoins","digital euro","MiCA","payments","azW8_EOLHRsxUiV1l6WVE-8niYiLksec193DSYSh5vU",{"id":1587,"title":1588,"author":7,"body":1589,"category":102,"cover":1747,"date":1748,"description":1749,"extension":106,"featured":107,"meta":1750,"navigation":109,"path":1751,"readingTime":111,"seo":1752,"stem":1753,"tags":1754,"__hash__":1758},"blog_en\u002Fblog\u002Fethdenver-2026.md","ETHDenver 2026: Four Prizes and a Monad Blitz Top 5 for DeVinci Blockchain",{"type":9,"value":1590,"toc":1735},[1591,1600,1603,1607,1610,1613,1617,1621,1626,1629,1632,1635,1642,1646,1651,1654,1657,1664,1668,1673,1676,1679,1686,1690,1698,1702,1706,1709,1712,1715,1722,1726,1729],[12,1592,1593,1594,1599],{},"In February 2026, a DeVinci Blockchain delegation spent a week in Denver, Colorado, for ETHDenver 2026. DVB members competed in two hackathons: Monad Blitz Denver, a one-day event on February 17, and the ",[16,1595,1598],{"href":1596,"rel":1597},"https:\u002F\u002Fethdenver2026.devfolio.co\u002F",[20],"ETHDenver 2026 BUIDLathon",", held from February 18 to 21 at the National Western Center.",[12,1601,1602],{},"The BUIDLathon received 186 project submissions. Three DVB teams won four prizes worth $3,534 in total: a 2nd place awarded by 0G and three prizes from the ADI Foundation. At Monad Blitz, among 36 projects, a fourth DVB project, Cachemarket, finished in the Top 5 and won $1,000.",[24,1604,1606],{"id":1605},"how-the-buidlathon-worked","How the BUIDLathon worked",[12,1608,1609],{},"Teams could start remotely once sponsor bounties were published on February 11. Dark Pool and Metaphor competed in New France Village, the track on the future of finance (DeFi, real-world assets, stablecoins, compliance), and AgentFi in Futurllama, the track for AI and new primitives.",[12,1611,1612],{},"The ADI Foundation evaluated every project built on ADI Chain and split $25,000 among 37 of them in four prize tiers, from $95 to $2,152, without naming places. Three of those projects came from DVB.",[24,1614,1616],{"id":1615},"our-winning-projects-at-ethdenver","Our winning projects at ETHDenver",[42,1618,1620],{"id":1619},"_2nd-place-best-defai-application-agentfi","2nd place, Best DeFAI Application: AgentFi",[12,1622,1623],{},[49,1624,1625],{},"Andrea Gonzalez, Alexandre Lemière",[12,1627,1628],{},"AgentFi is a marketplace where AI agents are owned, hired and paid on-chain. Each agent is an iNFT, an ERC-7857 token on 0G Chain whose encrypted intelligence is stored on 0G Storage. Users can hire an agent without buying it: the marketplace grants a usage right and splits the payment in one transaction, and any transfer of the token cancels earlier usage rights.",[12,1630,1631],{},"Agents can also hire each other: a portfolio analyzer can call a risk scorer and a yield optimizer and pay them in AFC, a token on Hedera. Each run is recorded on the Hedera Consensus Service, and a receipt on ADI Chain links the payment to a SHA-256 hash of the agent's output.",[12,1633,1634],{},"The project received $2,000 from 0G for this 2nd place, plus a $287 prize from the ADI Foundation.",[12,1636,74,1637],{},[16,1638,1641],{"href":1639,"rel":1640},"https:\u002F\u002Fgithub.com\u002FBuzzBallz\u002Fagentfi",[20],"BuzzBallz\u002Fagentfi",[42,1643,1645],{"id":1644},"adi-foundation-prize-960-dark-pool","ADI Foundation prize, $960: Dark Pool",[12,1647,1648],{},[49,1649,1650],{},"Florian Gallot, Wiliams Lopes, Jonathan Tran",[12,1652,1653],{},"Dark Pool is a private, compliant auction house on ADI Chain for institutions trading large blocks of tokenized real estate, private debt or commodities. On a public ledger, such an order can be front-run. Dark Pool uses sealed bids instead: each bidder first commits a hash of its offer, and nobody, the platform included, sees the prices before the reveal phase.",[12,1655,1656],{},"Every participant must pass an on-chain KYB (know your business) check and sign an EIP-712 conflict-of-interest attestation with each bid. Settlement is in DDSC, a stablecoin denominated in UAE dirhams. Ten AI agents draft requests for proposals, write the audit report and, once bids are revealed, flag predatory or collusive ones. None of them ever sees a sealed bid before the reveal.",[12,1658,74,1659],{},[16,1660,1663],{"href":1661,"rel":1662},"https:\u002F\u002Fgithub.com\u002Fjojo2504\u002Fdark-pool",[20],"jojo2504\u002Fdark-pool",[42,1665,1667],{"id":1666},"adi-foundation-prize-287-metaphor","ADI Foundation prize, $287: Metaphor",[12,1669,1670],{},[49,1671,1672],{},"Sofiane Ben Taleb, Armand Séchon, Noé Wales",[12,1674,1675],{},"Metaphor is a confidential hub for institutions that manage tokenized bonds, with each task handled by the network best suited for it. Bonds are issued on ADI Chain with their ISIN, coupon rate and maturity written on-chain. Negotiation happens in Daml data rooms on Canton, where the ledger itself decides who sees what: the owner sees everything, a counterparty sees the composition, an auditor only gets aggregate figures, and for anyone else the contract does not exist.",[12,1677,1678],{},"Coupons are scheduled through the Hedera Schedule Service, called directly from Solidity, so payments go out on their due date without a server. Risk reports come from 0G Compute, and every recommendation waits for a human to approve it.",[12,1680,74,1681],{},[16,1682,1685],{"href":1683,"rel":1684},"https:\u002F\u002Fgithub.com\u002FDVB-ANS\u002FMetaphor",[20],"DVB-ANS\u002FMetaphor",[24,1687,1689],{"id":1688},"monad-blitz-denver","Monad Blitz Denver",[12,1691,1692,1693,1697],{},"Hosted by the Monad Foundation, ",[16,1694,1689],{"href":1695,"rel":1696},"https:\u002F\u002Fblitz.devnads.com\u002Fevents\u002Fmonad-blitz-denver-2026",[20]," let the participants pick the winners themselves, from a $10,000 prize pool. Andrea Gonzalez and Alexandre Lemière also competed there with FlashScope.",[42,1699,1701],{"id":1700},"top-5-cachemarket","Top 5: Cachemarket",[12,1703,1704],{},[49,1705,1672],{},[12,1707,1708],{},"Cachemarket is a pay-per-request data gateway on Monad testnet. It relies on HTTP 402 (Payment Required), the status code behind the x402 standard: a query returns a price, the caller pays in MON, and the gateway answers. The first requester pays 0.001 MON: the gateway queries an external API such as CoinGecko and stores the answer on-chain. Anyone who asks the same question within the next 60 seconds pays 0.0001 MON, ten times less, and reads the answer from the chain.",[12,1710,1711],{},"Bots and AI agents that need the freshest data pay to be first, while dashboards ride the cache. No API key or account is needed, so an agent can pay for its own data.",[12,1713,1714],{},"Cachemarket was one of the five finalists announced on stage and won $1,000.",[12,1716,74,1717],{},[16,1718,1721],{"href":1719,"rel":1720},"https:\u002F\u002Fgithub.com\u002FDVB-ANS\u002FCachemarket",[20],"DVB-ANS\u002FCachemarket",[24,1723,1725],{"id":1724},"what-the-week-showed","What the week showed",[12,1727,1728],{},"Built on 0G, ADI Chain, Hedera, Canton and Monad, the DVB projects share two themes: institutional finance, where privacy and compliance come first (Dark Pool, Metaphor), and infrastructure that lets AI agents pay and get paid on their own (AgentFi, Cachemarket).",[12,1730,1731,1732,1734],{},"The same builders kept going. In September 2026, Andrea Gonzalez and Alexandre Lemière won the ",[16,1733,1333],{"href":692}," in Paris with Orma, while Sofiane Ben Taleb and Armand Séchon took 2nd place at the same event with patapim.",{"title":93,"searchDepth":94,"depth":94,"links":1736},[1737,1738,1743,1746],{"id":1605,"depth":94,"text":1606},{"id":1615,"depth":94,"text":1616,"children":1739},[1740,1741,1742],{"id":1619,"depth":100,"text":1620},{"id":1644,"depth":100,"text":1645},{"id":1666,"depth":100,"text":1667},{"id":1688,"depth":94,"text":1689,"children":1744},[1745],{"id":1700,"depth":100,"text":1701},{"id":1724,"depth":94,"text":1725},"\u002Fgallery\u002Fdenver_all_team.jpg","2026-03-05","Three DVB teams won four prizes at the ETHDenver 2026 BUIDLathon, and Cachemarket reached the Top 5 at Monad Blitz Denver. Here is what they built.",{},"\u002Fblog\u002Fethdenver-2026",{"title":1588,"description":1749},"blog\u002Fethdenver-2026",[1755,296,1756,1757,119],"ETHDenver","RWA","AI agents","CKrvXliKZoN_AbHxQdFxkKHU1cWIyFU3sTVUZuhDPYo",{"id":1760,"title":1761,"author":7,"body":1762,"category":102,"cover":1839,"date":1840,"description":1841,"extension":106,"featured":107,"meta":1842,"navigation":109,"path":161,"readingTime":111,"seo":1843,"stem":1844,"tags":1845,"__hash__":1849},"blog_en\u002Fblog\u002Fsui-move-bootcamp-paris-2026.md","Sui Move Builder Paris: A Week of Advanced Move and a First Place for Orizon",{"type":9,"value":1763,"toc":1832},[1764,1771,1774,1778,1781,1784,1787,1791,1794,1798,1803,1806,1809,1812,1816,1819,1827],[12,1765,1766,1767,1770],{},"From February 9 to 14, 2026, ",[16,1768,7],{"href":278,"rel":1769},[20]," hosted Sui Move Builder Paris on the Pôle Léonard de Vinci campus. The one-week bootcamp focused on building decentralized applications with Sui. Funded by the Sui Foundation and organized by DVB, it brought together 40 builders who wanted to deepen their command of Move, the smart contract language used on Sui.",[12,1772,1773],{},"The bootcamp was the final step of a selection that began in November 2025 with two hackathons run in parallel in Paris and Marbella. The best builders from that process were then gathered in Paris. They came from several European countries, including France, Switzerland, Spain, Poland and the United Kingdom, and from schools such as King's College London, Oxford, the Technical University of Munich, EPFL and Epitech. Six of the 40 participants were ESILV students and DVB members.",[24,1775,1777],{"id":1776},"a-week-of-advanced-move","A week of advanced Move",[12,1779,1780],{},"The program was designed for developers who already knew the Sui stack and wanted to reach a professional level. Workshops ran Monday to Friday, from 9 am to 5 pm, and were led by two engineers from the Sui ecosystem, Domenico Romeo and Álvaro Lillo Igualada.",[12,1782,1783],{},"Sui is a layer 1 blockchain launched in May 2023 by Mysten Labs. It stores data as objects, which lets the network process independent transactions in parallel. Move, its smart contract language, follows a resource-oriented model designed to make digital assets safer to handle.",[12,1785,1786],{},"The curriculum covered smart contract and project architecture, advanced Move patterns, dApp data indexing and the integration of contracts into TypeScript web front ends. It also included building blocks specific to Sui: Walrus, a decentralized storage protocol; Seal, a framework for encryption and on-chain access control; and Nautilus, a layer for verifiable off-chain computation.",[24,1788,1790],{"id":1789},"the-sui-move-builder-forge-paris-hackathon","The Sui Move Builder Forge Paris Hackathon",[12,1792,1793],{},"The week ended with the Sui Move Builder Forge Paris Hackathon, a night hackathon held on campus, where teams presented the projects they had built during the bootcamp. DeVinci Blockchain announced three winning teams: PoC Innovation with DePatreon, DVB2 with Orizon, and LosMarbellos with SuiPatron.",[42,1795,1797],{"id":1796},"joint-1st-place-orizon","Joint 1st place: Orizon",[12,1799,1800],{},[49,1801,1802],{},"Team DVB2: Alban Derouin, Eden Baudin",[12,1804,1805],{},"Orizon is a decentralized social platform inspired by Patreon. Creators publish content that only their subscribers can access, and fans subscribe in USDC to unlock encrypted posts and chat privately. Alban Derouin and Eden Baudin, both engineering students at ESILV, shared first place with the PoC Innovation team.",[12,1807,1808],{},"The project relies on two Sui building blocks. Seal encrypts posts (text, images and videos), so that only subscribers can decrypt them. Walrus stores the content in a decentralized way, which lets subscriber-only content circulate without depending on a central server. The Move smart contracts follow an event-sourced design, in which the events emitted on-chain serve as the record of the app's activity.",[12,1810,1811],{},"On the user side, the team used passkeys and zkLogin for sign-in, Enoki to sponsor transactions so that users do not pay network fees themselves, and SuiNS for human-readable identities.",[24,1813,1815],{"id":1814},"a-student-association-trusted-with-an-international-bootcamp","A student association trusted with an international bootcamp",[12,1817,1818],{},"The bootcamp is part of a collaboration between DeVinci Blockchain and the Sui Foundation that started several months earlier. With Sui Move Builder Paris, the foundation entrusted a student association with organizing and hosting an international bootcamp. For the foundation, the goal is to help developers who contribute to the Sui ecosystem sharpen their technical skills and to raise the quality of the applications deployed on the network.",[12,1820,1821,1822,219],{},"The initiative was led by Alexandre Mourot, a developer ambassador for the Sui Foundation, while DVB members Adrian Verdes and Romain Thépaut handled the organization in Paris. ESILV covered the result in ",[16,1823,1826],{"href":1824,"rel":1825},"https:\u002F\u002Fwww.esilv.fr\u002Fhackathon-sui-move-builder-paris-devinci-blockchain-remporte-la-premiere-place\u002F",[20],"an article on Orizon's first place",[12,1828,1829],{},[49,1830,1831],{},"Organized by DeVinci Blockchain with the support of the Sui Foundation.",{"title":93,"searchDepth":94,"depth":94,"links":1833},[1834,1835,1838],{"id":1776,"depth":94,"text":1777},{"id":1789,"depth":94,"text":1790,"children":1836},[1837],{"id":1796,"depth":100,"text":1797},{"id":1814,"depth":94,"text":1815},"\u002Fblog\u002Fsui-move-bootcamp-paris-2026.jpg","2026-02-14","DeVinci Blockchain hosted 40 Move builders in Paris for a week-long Sui bootcamp. At the closing hackathon, DVB's Orizon shared first place.",{},{"title":1761,"description":1841},"blog\u002Fsui-move-bootcamp-paris-2026",[262,1846,1847,1848,119],"Move","Walrus","bootcamp","OnPeans6917GKKTi6ZSoGc-1ko_FMmkSuBEA7GYv4QY",{"id":1851,"title":1852,"author":7,"body":1853,"category":102,"cover":1961,"date":1962,"description":1963,"extension":106,"featured":107,"meta":1964,"navigation":109,"path":1965,"readingTime":111,"seo":1966,"stem":1967,"tags":1968,"__hash__":1969},"blog_en\u002Fblog\u002Fhack4privacy-iexec-2026.md","Hack4Privacy by iExec and 50 Partners: Two DeVinci Blockchain Teams on the Podium",{"type":9,"value":1854,"toc":1953},[1855,1876,1879,1883,1886,1889,1892,1894,1898,1903,1906,1909,1916,1920,1924,1927,1930,1933,1940,1944,1947,1950],[12,1856,1857,1858,1863,1864,1869,1870,1875],{},"On February 10, two teams from the DeVinci Blockchain community took second and third place at ",[16,1859,1862],{"href":1860,"rel":1861},"https:\u002F\u002Fdorahacks.io\u002Fhackathon\u002Fiexec-50partners-hack4privacy\u002Fdetail",[20],"Hack4Privacy",", a hackathon organized by ",[16,1865,1868],{"href":1866,"rel":1867},"https:\u002F\u002Fiex.ec\u002F",[20],"iExec"," and the Paris accelerator ",[16,1871,1874],{"href":1872,"rel":1873},"https:\u002F\u002Fwww.50partners.fr\u002Fprogrammes\u002Fweb3",[20],"50 Partners",". HyperSecret, built by Alban Derouin and Adrian Verdes, won second place. iPred, built by Romain Thépaut and Thomas Hussenet, finished third. Both teams pitched on stage at 50 Partners' Onchain Day in Paris, where the prizes were presented.",[12,1877,1878],{},"The theme was privacy in DeFi and real-world assets (RWA). Participants had to build confidential applications with iExec's tools, which run sensitive code inside a Trusted Execution Environment (TEE): an isolated area of the processor, called an enclave, where code and data are protected from the rest of the machine, including its operator. Only the result leaves the enclave.",[24,1880,1882],{"id":1881},"how-the-hackathon-worked","How the hackathon worked",[12,1884,1885],{},"The program opened with an Ideation Week (January 12 to 16) and a Tech Week (January 19 to 23), two series of online workshops on ideation, pitching, iExec technology and building a first iExec application. After an in-person kick-off at the iExec office in Paris on January 27, the building phase ran online until February 7. Teams of up to five people had to deploy on Arbitrum or Arbitrum Sepolia, publish their code, record a demo video of up to four minutes and submit written feedback on the iExec developer tools.",[12,1887,1888],{},"A jury from iExec, 50 Partners, Blockwall VC and technical experts reviewed the projects on February 8 and 9. The selected teams then pitched at the Demo Day, held during Onchain Day at the Elysées Lincoln cinema in Paris, in front of more than 80 people.",[12,1890,1891],{},"DeVinci Blockchain was one of the builder communities that 50 Partners brought into the event, alongside BSA EPFL, PoC Innovation, 42 Blockchain, Ethereum France and TUM Blockchain, among others.",[24,1893,721],{"id":720},[42,1895,1897],{"id":1896},"_2nd-place-hypersecret","2nd place: HyperSecret",[12,1899,1900],{},[49,1901,1902],{},"Alban Derouin, Adrian Verdes",[12,1904,1905],{},"HyperSecret lets a user deposit USDC on the Hyperliquid testnet without leaving an on-chain link between the sending wallet and the receiving account. The user deposits USDC into a vault contract on Arbitrum Sepolia and submits the destination address as an encrypted intent through the iExec SDK.",[12,1907,1908],{},"An iExec application running in an Intel SGX enclave (through the SCONE runtime) decrypts the intent and generates a fresh wallet that is used only once. The vault sends the funds to that wallet, which bridges them to Hyperliquid and transfers them to the destination address. An observer can follow the funds from the vault to a random wallet and then to the bridge, but cannot connect the original depositor to the recipient: the mapping between the two stays encrypted inside the enclave. The team won $2,000 in RLC, iExec's token.",[12,1910,74,1911],{},[16,1912,1915],{"href":1913,"rel":1914},"https:\u002F\u002Fgithub.com\u002Fskar8848\u002FHyperSecret-hack4privacy",[20],"skar8848\u002FHyperSecret-hack4privacy",[42,1917,1919],{"id":1918},"_3rd-place-ipred","3rd place: iPred",[12,1921,1922],{},[49,1923,844],{},[12,1925,1926],{},"iPred is a confidential prediction market deployed on Arbitrum Sepolia. On public prediction markets, pending orders, position sizes and large bets are visible to everyone, which lets others front-run those orders or trade against known positions. iPred keeps that information private while prices stay public.",[12,1928,1929],{},"Users deposit USDC and receive cUSDC, a token whose balances are stored encrypted on-chain. Each market has two confidential outcome tokens, cYES and cNO. Orders are encrypted in the browser with the enclave's public key and placed in an on-chain queue. An iExec application then replays the deposits, orders and withdrawals inside the enclave, executes the orders against an automated market maker (AMM), updates the encrypted balances and commits the Merkle root of the new state on-chain through an iExec callback. The AMM's pool reserves are published to IPFS, so anyone can read the prices.",[12,1931,1932],{},"Because iExec callbacks are capped at 200,000 gas, the team split settlement into two steps: the callback records only the state root and the prices, and balance updates and withdrawals are applied in separate transactions. The project won $1,000 in RLC.",[12,1934,74,1935],{},[16,1936,1939],{"href":1937,"rel":1938},"https:\u002F\u002Fgithub.com\u002FsyncHypn\u002Fprivacy-predict",[20],"syncHypn\u002Fprivacy-predict",[24,1941,1943],{"id":1942},"privacy-as-a-defi-building-block","Privacy as a DeFi building block",[12,1945,1946],{},"First place and $3,000 in RLC went to Shadow Swap, a decentralized exchange based on batch auctions that encrypts orders before they reach the chain to prevent front-running and sandwich attacks. The three podium projects tackled the same problem from different angles: on a public blockchain, anyone can read balances, order flow and the links between wallets. Confidential execution keeps that information private while transactions still settle on-chain.",[12,1948,1949],{},"On top of the RLC prizes, 50 Partners had announced a Fast-Track for the winners, with accelerated due diligence and support.",[12,1951,1952],{},"For DeVinci Blockchain, Hack4Privacy ended with two of the three podium places.",{"title":93,"searchDepth":94,"depth":94,"links":1954},[1955,1956,1960],{"id":1881,"depth":94,"text":1882},{"id":720,"depth":94,"text":721,"children":1957},[1958,1959],{"id":1896,"depth":100,"text":1897},{"id":1918,"depth":100,"text":1919},{"id":1942,"depth":94,"text":1943},"\u002Fblog\u002Fhack4privacy-iexec-2026.jpg","2026-02-10","HyperSecret and iPred took 2nd and 3rd place at Hack4Privacy, the confidential DeFi and RWA hackathon run by iExec and 50 Partners.",{},"\u002Fblog\u002Fhack4privacy-iexec-2026",{"title":1852,"description":1963},"blog\u002Fhack4privacy-iexec-2026",[1868,924,1472,115,119],"8BZtZWhHh5rdmvdRLLlab5kjTfBKSN4adO1Xuq5SaEw",{"id":1971,"title":1972,"author":7,"body":1973,"category":102,"cover":2100,"date":2101,"description":2102,"extension":106,"featured":107,"meta":2103,"navigation":109,"path":156,"readingTime":111,"seo":2104,"stem":2105,"tags":2106,"__hash__":2108},"blog_en\u002Fblog\u002Fsui-hackathon-paris-2025.md","DeVinci Blockchain Sui Hackathon: 15 Projects Built Over a Weekend in Paris",{"type":9,"value":1974,"toc":2090},[1975,1984,1987,1991,1994,1997,2000,2002,2006,2011,2014,2017,2020,2027,2031,2036,2039,2046,2050,2055,2058,2061,2068,2072,2075,2079,2082,2085],[12,1976,1977,1978,1983],{},"On November 22 and 23, 2025, DeVinci Blockchain hosted a Sui hackathon on the Pôle Léonard de Vinci campus in Paris La Défense. Over one weekend, teams of two to five built prototypes on Sui, using its Move language. In total, 15 projects were submitted on the ",[16,1979,1982],{"href":1980,"rel":1981},"https:\u002F\u002Fdorahacks.io\u002Fhackathon\u002F1792\u002Fbuild",[20],"Paris DoraHacks page",", competing for a $5,000 prize pool.",[12,1985,1986],{},"The Paris event took place alongside a second Sui hackathon in Marbella, run with The Bridge. Both hackathons were the first step of a months-long selection of Move builders, which led to a bootcamp in Paris in February 2026.",[24,1988,1990],{"id":1989},"a-weekend-to-build-on-sui","A weekend to build on Sui",[12,1992,1993],{},"The hackathon was open to engineering students, designers and product enthusiasts, with no prior Sui experience required. Saturday opened with an introduction to Sui and Move, followed by team formation and the first hacking sessions. Sui mentors held project check-ins in the afternoon, and the venue stayed open overnight, with mattresses set up for those who coded until morning. Each submission required a code repository and a demo video, and the teams pitched to the jury on Sunday afternoon.",[12,1995,1996],{},"The suggested themes included DeFi, games and NFTs, developer tooling, identity and wallets, and social impact. The three winning teams all built on two parts of the Sui stack: Walrus, the decentralized storage network, and Seal, which handles encryption and access control.",[12,1998,1999],{},"Alexandre Mourot, a developer ambassador for the Sui Foundation and a member of the EPFL Blockchain Student Association, led the selection program behind the bootcamp. Over the same weekend, he ran workshops and judged both the Paris and Marbella hackathons.",[24,2001,320],{"id":319},[42,2003,2005],{"id":2004},"joint-1st-place-sirius","Joint 1st place: Sirius",[12,2007,2008],{},[49,2009,2010],{},"Ali Ben Yezza, Rayan El Idrissi",[12,2012,2013],{},"Sirius turns Walrus into a zero-trust, Git-like platform for sensitive datasets: each version is encrypted, stored and traced, so that the data can be verified before it is written to the blockchain.",[12,2015,2016],{},"The source of truth lives in Sui Move objects. A Repository object holds ownership, permissions and the latest commit, and each Commit object points to the one before it, which enforces a single linear history with no forks. Files are encrypted before upload and stored on Walrus with a manifest, and their keys are sealed with Seal: only the addresses allowed by an on-chain policy can decrypt them. A Merkle root of each manifest is written on-chain, which makes any tampering detectable.",[12,2018,2019],{},"The prototype also includes a first AI review of uploaded content. According to Alexandre Mourot, the team was moving these checks to Nautilus, which runs them inside a trusted execution environment (TEE) and makes them verifiable.",[12,2021,74,2022],{},[16,2023,2026],{"href":2024,"rel":2025},"https:\u002F\u002Fgithub.com\u002Frayan-elidrissi\u002Fsirius",[20],"rayan-elidrissi\u002Fsirius",[42,2028,2030],{"id":2029},"joint-1st-place-drsui","Joint 1st place: DrSui",[12,2032,2033],{},[49,2034,2035],{},"Team SUI FAM",[12,2037,2038],{},"DrSui gives patients control over their medical data. Records are encrypted end to end with Seal as soon as they leave the hospital, then stored on Walrus. Patients grant decryption rights to specific doctors through on-chain access control and can revoke them at any time. The app relies on sponsored transactions, so users do not need to hold any crypto to pay gas. The team's longer-term goal is a trusted layer for exchanging medical imaging in decentralized science (DeSci).",[12,2040,74,2041],{},[16,2042,2045],{"href":2043,"rel":2044},"https:\u002F\u002Fgithub.com\u002F0xEl1yahu\u002FDrSui",[20],"0xEl1yahu\u002FDrSui",[42,2047,2049],{"id":2048},"_3rd-place-sail","3rd place: Sail",[12,2051,2052],{},[49,2053,2054],{},"Lucas Leclerc, Aurelien Demeusy, Jules Lordet and a fourth teammate, of PoC Innovation (Epitech)",[12,2056,2057],{},"Sail is a no-code tool for building flash loans on Sui. A flash loan lets a user borrow without collateral, as long as the loan is repaid within the same transaction. Sail turns each step of such a transaction into a visual block, then chains the blocks atomically with Sui's Programmable Transaction Blocks. Every strategy can be simulated before it runs, to estimate gas and profit.",[12,2059,2060],{},"The team integrated Navi for flash-loan liquidity and Cetus for swaps, with use cases such as arbitrage between two pools, collateral swaps and refinancing a position before liquidation. Strategies can also be sold on a built-in marketplace, where each one is encrypted with Seal and stored on Walrus.",[12,2062,74,2063],{},[16,2064,2067],{"href":2065,"rel":2066},"https:\u002F\u002Fgithub.com\u002FPoCInnovation\u002FSail",[20],"PoCInnovation\u002FSail",[42,2069,2071],{"id":2070},"other-notable-projects","Other notable projects",[12,2073,2074],{},"Alexandre Mourot also singled out two other Paris builds: Prophecy, a prediction market in which the collateral behind each bet earns interest through Suilend, and SuiLens, a developer tool that maps the dependencies of Sui packages as interactive graphs.",[24,2076,2078],{"id":2077},"from-paris-to-the-february-bootcamp","From Paris to the February bootcamp",[12,2080,2081],{},"From February 9 to 14, 2026, the 40 builders chosen at the end of the selection met on the same campus for a week-long Move bootcamp, organized by DeVinci Blockchain with the support of the Sui Foundation.",[12,2083,2084],{},"Sirius has since had a second life. In April 2026, Ali Ben Yezza and Noé Wales, both ESILV engineering students, brought a new version, Sirius 2.0, to Hack the Block in Paris, this time on the XRP Ledger as a lending pool for AI datasets, and won the Boundless prize.",[12,2086,2087],{},[49,2088,2089],{},"Organized by DeVinci Blockchain on the Pôle Léonard de Vinci campus, with Adrian Verdes and Romain Thépaut leading the organization in Paris.",{"title":93,"searchDepth":94,"depth":94,"links":2091},[2092,2093,2099],{"id":1989,"depth":94,"text":1990},{"id":319,"depth":94,"text":320,"children":2094},[2095,2096,2097,2098],{"id":2004,"depth":100,"text":2005},{"id":2029,"depth":100,"text":2030},{"id":2048,"depth":100,"text":2049},{"id":2070,"depth":100,"text":2071},{"id":2077,"depth":94,"text":2078},"\u002Fblog\u002Fsui-hackathon-paris-2025.jpg","2025-11-23","DeVinci Blockchain hosted a Sui hackathon in Paris, the first step toward a Move builder bootcamp. Meet the three winning projects.",{},{"title":1972,"description":2102},"blog\u002Fsui-hackathon-paris-2025",[262,1846,1847,2107,119],"Seal","LhsJssWNTLcSKcivsWVOZ9vR-0PGnZw8Fnf5G9lF9bI",1793038220476]