A dual-signature cross-chain vault for Solana–Stellar asset interoperability.
SolvBTC enables BTC-backed asset operations across Solana and Stellar.
57Blocks led smart contract, backend, and frontend development to build a secure vault system supporting multi-signature cross-chain transactions.
01Smart contracts
Implemented Solana–Stellar vaults with dual-signature verification (Ed25519 + Secp256k1) and EIP-712-style domain separation to prevent replay attacks. Fixed Stellar require_auth bypass risks in multi-contract calls.
02Backend
Built a cross-chain signature handler, a snapshot bot for token holders, and multisig coordination for upgrades and transactions.
03Frontend
Delivered a full dApp with wallet integration, ledger management, and cross-chain UI workflows.
Enabled seamless Solana–Stellar interoperability with secure authorization and audit trails.
Simplified cross-chain transaction management and user operations.
57Blocks continues supporting SolvBTC’s mainnet deployment and audit preparation.