what's Open Wallet Standard?

Open Wallet Standard (OWS) is an open-source protocol providing a secure, local-first wallet solution tailored for AI agents and developer tools. It enables a single encrypted vault derived from one BIP-39 mnemonic to generate accounts across major blockchains like EVM chains, Solana, Bitcoin, Tron, TON, and Cosmos via standard HD derivation paths. The unified signing interface abstracts chain-specific details, allowing agents to sign transactions without exposing private keys. Keys are stored encrypted at rest using AES-256-GCM with scrypt KDF (Ethereum Keystore v3 standard), decrypted only in mlocked memory for signing, and immediately zeroized afterward. Implemented in Rust with Node.js and Python bindings, OWS delivers native performance without network latency or custodial dependencies. It forms the foundational wallet layer beneath agent payment protocols such as x402, MPP, and A2A, promoting interoperability in the agentic crypto economy.

Open Wallet Standard: open-source, backed by PayPal, OKX, Ripple, Ethereum, Solana, and many.