All projects matching “signed”

Use this before signing a transaction for a Solana program: who can change its code (single key, Squads multisig with threshold and time lock, DAO, or immutable), when it last changed, verified build, security.txt. Instant, per request.

Load when an agent needs pre-action verification of factual claims — multi-source confidence scoring with JWS-signed receipt, offline-verifiable per draft-krausz-verification-state. $0.02 USDC per query on Base.

Read-only Solana financial-action firewall: decode and simulate an unsigned transaction, bind observed effects to declared intent and policy, and return a signed PASS/FAIL/REVIEW receipt

Independent fact + signed receipt. $0.01 USDC.

Offline EIP-712 typed data (chain-agnostic, no RPC): domain + types + primaryType + message JSON in, the normalized typed data plus domainSeparator, hashStruct and the final digest (the 32-byte value the wallet signs) out — with an optional signature (0x+65 bytes) it recovers the signer address (ecrecover), confirmed against an optional expectedAddress (recover.ok). Structs nest (arrays of structs

A registry of token records with a build log. A record is written only by the token's provable controller (on Solana: the pump.fun curve creator or the mint's update authority) and every version carries that ed25519 signature, so a reader verifies against the chain, not a directory. One $0.02 x402 write in USDC on Base, Polygon, Solana or Arc; reads, pages, log and OpenAPI are free.