{"slug":"api-vextorium-com-siwe-verificar-pago-366a3f","title":"Verify a Sign-In with Ethereum (EIP-4361) login","host":"api.vextorium.com","method":"POST","resource":"https://api.vextorium.com/siwe-verificar-pago","category":"market","description":"Verify a Sign-In with Ethereum (EIP-4361) login: parses domain, address, chain, nonce and dates, checks the signature and expiry, and optionally the expected domain and nonce. Authenticate users or agents by wallet.","price_listed":0.003,"price_asked":0.003,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":350,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"firma":"0xcc7863e87c5879d5fd0bb7b2bc925ec0f86f59a07badb05d8faffec9b061d18a6227988b56b1e18b7a0603d034a7c5b378f5b039e0af9c929bf090ded43dd5941c","mensaje":"example.com wants you to sign in with your Ethereum account:\n0x7E5F4552091A69125d5DfCb7b8C2659029395Bdf\n\nSign in\n\nURI: https://example.com\nVersion: 1\nChain ID: 8453\nNonce: abc12345\nIssued At: 2026-10-02T20:00:00Z"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"dominio":{"type":"string"},"firma":{"type":"string"},"mensaje":{"type":"string"},"nonce":{"type":"string"}},"required":["mensaje","firma"]},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"properties":{"cadena":{"type":["string","null"]},"caduca":{},"declaracion":{"type":["string","null"]},"direccion":{"type":["string","null"]},"dominio":{"type":["string","null"]},"emitido":{"type":["string","null"]},"errores":{"items":{},"type":["array","null"]},"nonce":{"type":["string","null"]},"uri":{"type":["string","null"]},"valido":{"type":["boolean","null"]}},"type":["object","null"]},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-03","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.003,"price_match":true,"latency_ms":350,"error":null}],"description_full":"Verify a Sign-In with Ethereum (EIP-4361) login: parses domain, address, chain, nonce and dates, checks the signature and expiry, and optionally the expected domain and nonce. Authenticate users or agents by wallet.","last_updated":"2026-10-02T20:57:01.862Z","schemes":["exact"]}