Your wallet has a balance. Soon it’ll have a reputation. @Arcium

We received 129 submissions, and the competition was tough — the bar was high across the board. We also want to recognize the strong work from the following honorable mentions (in no particular order): • @stealf_finance • @anon0mesh • @SolRouterAI • @ArxPredict • @cipherscore • @Casino_n_Church • ClimeMate by @thecorgod1234 • @unchainprotocol • @subly_fi • @fungerbilXMR We look forward to supporting these projects going forward!

➥ Arcium Ecosystem: The Builders of the <Encrypted> Internet The encrypted internet is taking shape. @Arcium is becoming the base layer for developers building private apps across DeFi, AI, finance, and gaming. Here’s a look at the growing Arcium ecosystem in 30s 🧵 — — — ► Why Developers Choose Arcium? Arcium lets developers add privacy to existing apps without switching chains or changing user flow. ▸ Developer-first: Build privacy apps without cryptography expertise. ▸ Chain-agnostic: Live on Solana, expanding to EVM next. ▸ Fast: Encrypted computation runs at web speed. ▸ Secure: Uses dishonest-majority MPC with cheater detection. — ► Arcium Ecosystem DeFi ▸ Melee ( @meleemarkets ) – Prediction markets with private order flow ▸ UniFi ( @UniFi_Labs ) – Private perpetuals trading ▸ VanishTrade ( @vanishTrade ) – Encrypted trading interface ▸ Darklake ( @darklakefi ) – Private liquidity and dark pools ▸ Umbra ( @UmbraPrivacy ) – Incognito mode for Solana Finance / Banking ▸ Stealf ( @stealf_finance ) – Private neobank ▸ Seedplex ( @seedplex_io ) – Private access to early-stage equities ▸ Unchain Protocol ( @UnchainProtocol ) – Private payments ▸ Subly ( @subly_fi ) – Private subscription services AI / Machine Learning ▸ Crunch ( @crunchDAO ) – Privacy-preserving AI and ML models ▸ Loyal ( @loyal_hq ) – Private AI agents Gaming / Social ▸ K3hoot ( @k3hootxyz ) – Quiz-style game on Solana ▸ Whisper ( @whisper_arcm ) – Private dating app ▸ Stealth Snake ( @StealthSnakeXyz ) – NFT dueling game ▸ Hidden Warrior ( @gmpcbattle ) – On-chain combat game ▸ ArcaneHands ( @arcanehandsxyz ) – Rock-paper-scissors privacy game ▸ Split or Steal ( @splitstealfun ) – Casino-style game Fellowship / Hackathon ▸ ArxPredict ( @ArxPredict ) – Prediction market ▸ CipherScore ( @CipherScore ) – Private credit scoring ▸ Projects from the ( @colosseum ) Cypherpunk Hackathon continue expanding the ecosystem. — ► Wrap Up Arcium builds the privacy layer that connects blockchains together. Over a dozen applications are already live on testnet, with more joining through the Colosseum Hackathon. The C-SPL (Confidential SPL Standard) is being tested to make privacy native across the Solana ecosystem. With mainnet approaching, Arcium moves from optional privacy to core infrastructure for secure computation on @solana and beyond.

The full @Arcium ecosystem!! Official Demos: • Dark Pool: Private DeFi trading without revealing order details → Reduces front-running, boosts secure markets. • Blackjack: Fair, private on-chain card game → Enables tamper-proof gaming with confidential plays. • Phantom Fleet: Encrypted positions in multiplayer battles → Enhances strategic gaming with hidden tactics. • @UmbraPrivacy : Private send/receive/swap/invest on Solana → Bridges privacy & liquidity in DeFi. Community-Built: • @arcanehandsxyz : Rock, paper, scissors on-chain → Simplifies encrypted interactions for devs & users. • @ArxPredict : Privacy-enhanced prediction market → Fair betting with encrypted oracles for data-driven insights. • @CipherScore : Privacy-first credit scoring service → Supports confidential lending, preventing data leaks. • StealthSnake: Private NFT duels → Boosts NFT utility with encrypted battles, expanding gaming economy. • @k3hootxyz : Web quiz platform with privacy → Secures educational tools, promoting interactive apps. • @splitstealfun : Play golden balls (trust-testing game) → Explores behavioral economics in encrypted social dynamics. • Whisper: Encrypted Match, Find meaningful connections with people who share your interests → Protects personal data in consumer apps like dating/social. • @gmpcbattle : Turn-based, encrypted battle game on Solana where all combat logic is private only the outcome is revealed → Advances complex computations for tactical gaming. Integrations/Partners: • @reflectmoney: Capital efficient stablecoin protocol backed by United States → Adds privacy to stablecoin mechanisms, enhancing tokenomics. • @streamflow_fi : Token vesting & streaming payments → Enables secure, private token distributions. • @meleemarkets : Prediction market with 100x returns on Solana → Integrates encrypted predictions for fair, high-return plays. • @vanishTrade : Compliant instant private trading → Facilitates regulated privacy in trades. • @SENDArcadeX : Blockchain-based games in Solana Blink ecosystem → Combines privacy with fun transfers & games. • @cookie3 : AI data layer for crypto enterprise analytics → Provides private data insights for user engagement. • @solanaidentity : Fastest-growing identity protocol on Solana → Secures user IDs with encryption. • @metaplex : NFT standard on Solana → Powers private NFT creations & trades. • @multisig : Financial infrastructure and services layer for the stablecoin economy → Enables private governance & treasury management. • @iron : All Stablecoin Operations. One API. Ramp, swap, mint, checkout, KYC, FX, and more → Adds privacy to broad stablecoin ops like KYC/FX. • @union_build : Leading ZK interoperability L1 enabling settlement and liquidity for protocols and asset issuers → Supports private cross-protocol collaborations. • @JupiterExchange : DeFi aggregator on Solana → Optimizes private swaps across liquidity. • @Titan_Exchange : Swap exchange → Improves efficient, private trading. • @darklakefi : zkAMM encrypting swaps and flipping MEV into LP yield on Solana → Enhances encrypted data handling in DeFi. • SendAI : AI agents for sends → Automates private transactions with AI. • @crunchDAO : Decentralized machine learning platform → Provides crowdsourced ML insights with privacy for AI applications. -------------------------------------------------- I listed all the projects mentioned on the website: arcium.com/testnet I think there are probably many more. Hopefully, I didn’t make any mistakes — if I did, please let me know. gMPC ☂️

Tested some @arcium apps and honestly I’m so happy for what’s coming @ArxPredict by @DsouzaJovian Privacy prediction markets I love this so much, with the way prediction markets heating up right now, imagine now being private again. So easy to use, i can’t wait to use this on mainnet. It will be one of the best revenue generators on mainnet, me thinks . @whisper_arcm by @chaukhac_ Confidential matchmaking I love this so much as well, your missus won’t know you stepped out 😂, joking joking. Don’t cheat on your partners . I feel we should be able to post images directly instead of sending a link but yeah , it’s so great. This is really needed in today’s world and I’m so excited it’s coming, can’t wait to use it on mainnet (I won’t cheat) @CipherScore by @ifeelSam Private credit scoring service, it’s so great , kudos to Sam @k3hootxyz by @SaitamaCoder_VN I’ve seen a case of someone that don’t want to register for an online site because she failed the exam many times and she didn’t want to be mocked , seeing this is so nice . I feel it will extend outside web3 <Encrypted> school, I love this. @splitstealfun by @4rjunc Amazing game 🙌 I willl be testing more and they all work on mobile btw So excited for what’s coming gMPC

Hey everyone! I’m absolutely thrilled to see @CipherScore get a shoutout in @rodionadov! We’re working hard to bring private credit scoring to life, using @arcium ’s MPC magic to keep your financial data under wraps. No more creepy data leaks your credit, your rules! Stay <encrypted>