Stanley Arua

bitRWA-bridge A trust-minimized, compliant, and capital-efficient way to bring RWAs—like tokenized T-Bills (e.g., BlackRock’s $BUIDL)—to Bitcoin via Rootstock, enabled by Chainlink infrastructure, BitMask Wallet, and Ondo’s RWA stack. This unlocks native BTC yield and Bitcoin-based DeFi for institutional and retail market participants. $ Multi - compliant RWAs USDY, OUSG ⛓️ Multi- chain deployment Ethereum, Avalanche, Rootstock (BTC) Inspiration As the founder of BitMask, I recently spoke with the RWA team at Franklin Templeton (who currently manage ~$741.5 million in tokenized assets ). We explored a simple but powerful question: What if RWAs could be deployed, bridged and traded directly to Bitcoin? The gleam in their eyes said it all—and sparked a deeper dive into institutional appetite for this future. That exploration led us to this hackathon, where we’ve built *an institutional grade cross-chain bridge for RWAs, specifically US-Treasuries. * ChainlinkCCIP, Functions, Chainlink Proof of Reserves, and Data Feeds Ondo’sRWAHub contracts and Securitize’s KYC/AML stack BitMaskWallet for seamless RWA access on Rootstock, Bitcoin’s smart contract layer RWAs deployed on Avalanche Fuji supporting the cross-chain bridge to Bitcoin The Opportunity - Real-World Assets Meet Bitcoin Global asset managers, corporate treasuries, and sovereign wealth funds already hold or want Bitcoin exposure. Tokenizing RWAs like U.S. Treasuries, real estate, and commodities on Bitcoin unlocks: Global Access – Anyone, anywhere, anytime Instant Settlement – Finality on Bitcoin’s secure rails Programmable Finance – RWAs meet DeFi on BTC via Rootstock BTC Yield Opportunities – Institutions earn yield, natively swapped to BTC Bitcoin-Secured – Protected by over 80% of Bitcoin’s PoW hashpower via merge-mining Lower & Predictable Fees – Rootstock gas costs are stable and significantly cheaper than Ethereum This creates a zero-friction capital loop and unlocks trillions in institutional capital, with composability and compliance at its core. Potential Market Impact and Revenue If the tokenized RWA market reaches $1 trillion (a mid-range projection), Bitcoin via BitRWA bridge capturing even 2–5% would represent $20–50B in assets. At a 3% yield: ➤ $20B = $600M/year in yield on Bitcoin rails With swap/bridge fees (~0.05–0.1%): ➤ $10–25M/year in protocol revenue About BitMask 💎 → BitMask is a unique Bitcoin wallet and infrastructure that facilitates tokenization via smart contracts on Bitcoin. We support both RGB (Bitcoin native) and Rootstock (EVM compatible) smart contracts natively on Bitcoin. $2.5million and backed by Tim Draper of Draper Associates, in addition to prolific investors. Development grant from Rootstock FoundationRootstock is Bitcoin’s EVM-compatible smart contract layer, secured by merge-mining. It enables DeFi and tokenized RWAs with Bitcoin-grade security. Architecture Overview The bridge consists of three main components: 1) BitRWABridge (Ethereum/Sepolia) Role: Accept user deposits of USDY Lock tokens in escrow Validate compliance and wallet binding Construct and dispatch CCIP message Relevant Address: Sepolia CCIP Router: 0xD0daae2231E9CB96b94C8512223533293C3693Bf 2) BitRWABridgeAdapter (Rootstock) Role: Receive CCIP messages Validate and parse payloads Query RBTC/rUSDY price feed Mint rUSDY tokens proportional to locked USDY value Relevant Address: Rootstock CCIP Router: 0x536d7e53d0adeb1f20e7c81fea45d02ec8dde1b8 3) Token Contracts USDY (Ethereum): ERC-20 token representing RWA from ONDO contract on the user account rUSDY (Rootstock): RRC-20 mintable token pegged to USDY value on ONDO RWAhub contract Using BitRWA to bridge $USDY onchain Phase 1 – Compliance and Wallet Binding Purpose: Verify the user is eligible and bind their wallet cross-chain. Access Control: onlyOwner and onlyCompliant Phase 2 – Token Locking and Message Dispatch Verify compliance and balance Lock tokens on Ethereum Snapshot ETH/USDY price Dispatch CCIP message Phase 3 – Cross-Chain Message Relay Infrastructure: Chainlink CCIP relays message across networks. Chain selectors: Sepolia: 16015286601757825753 Rootstock: 12532609583862916517 Phase 4 – Minting on Rootstock Validate sender authenticity Calculate rUSDY equivalent with live price feeds Mint tokens to bound wallet Phase 5 – Confirmation and Balance Update Send confirmation message Reduce locked balances on Ethereum Emit BridgeCompleted Price Feed Integration Chainlink feeds used: ETH/USDY: 0x694AA1769357215DE4FAC081bf1f309aDC325306 RBTC/rUSDY: 0x1b44F3514812d835EB1BDB0acB33d3fA3351e43 avax address: 0xD071876B13886e01988CEa66C87b93B3073233