{"uid":"cap_bREG14tEYvG1lKgZmK9v9","slug":"soren-cryptographic-commit-65ea0a24","name":"Soren Cryptographic Commit","description":"Seal a value now and prove later that you were bound to it before the outcome was known. Use it for sealed bids, commit-reveal games, or any promise a counterparty must be able to check afterwards. Send only a SHA-256 — we never see the value. Nothing is stored: the signed commitment is handed back and is the only copy, so there is no database of sealed values to leak. Verify with soren.com/oracle-key.json","url":"https://soren.com/v1/commit?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["hash"],"properties":{"hash":{"type":"string","examples":["e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"],"description":"SHA-256 of the value you are sealing, 64 lowercase hex. Hash it yourself."},"note":{"type":"string","examples":["sealed bid, lot 14"],"description":"Up to 200 characters, bound into the signature."}}}},"additionalProperties":false}}},"responseSchema":{"type":"json","example":{"hash":"<64 hex>","committed":true,"signature":{"value":"<base64>","algorithm":"Ed25519"},"commitment":"<opaque token — keep it, we store nothing>","committed_at":"<ISO-8601 UTC>"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_QAcGqxr6EDqvc3wvogSh0","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Creates a signed, timestamped cryptographic commitment to a SHA-256 hash, enabling commit-reveal schemes where a party can later prove they were bound to a value before an outcome was known.","exampleAgentPrompt":"I'm submitting a sealed bid of $4,200 for lot 14 in tomorrow's auction — hash the value 'bid:4200:lot14' with SHA-256 and get me a signed Soren commitment I can reveal after the auction to prove I didn't change my bid.","exampleUseCases":[{"title":"Sealed bid auction proof","prompt":"I need to lock in my sealed bid for the property auction — I've already hashed my offer amount to e3b0c44298fc1c149afbf4c8996fb924... Get me a signed Soren commitment with the note 'property bid, 42 Oak Street' so I can prove to the auctioneer I didn't change my number after seeing other bids."},{"title":"Commit-reveal prediction game","prompt":"Before the match starts, I want to commit to my score prediction of 3-1 — I've SHA-256 hashed the string 'prediction:3-1:match42'. Can you get me a signed timestamped commitment from Soren so I can reveal it after the game and prove I called it beforehand?"},{"title":"Fair contract offer timestamping","prompt":"I'm sending a business proposal to a partner today and I need to prove I didn't alter the terms after their response. I've hashed the contract document to a SHA-256 — please get a Soren signed commitment for hash a4d2f891c3b... with note 'service agreement v2, Acme Corp' so we have a verifiable timestamp."}],"resultDescription":"A signed cryptographic commitment object containing the submitted SHA-256 hash, an optional bound note, a server-side timestamp, and a digital signature verifiable against the Soren public key at soren.com/oracle-key.json. No data is stored server-side; the returned signed object is the only record and must be retained by the caller.","failureModes":["Invalid or malformed SHA-256 hash (not 64 lowercase hex characters) results in a 400 error","Note field exceeds 200 characters causes rejection","Payment of $0.02 USDC not provided or invalid results in 402 Payment Required","Network timeout or server unavailability returns 5xx error — caller must retry and resubmit"],"whenToPreferThis":"Use this endpoint when you need a privacy-preserving cryptographic commitment where the server must never see the actual value, no server-side storage is acceptable (avoiding data leakage risk), and the commitment must be independently verifiable by a third party using the public oracle key. Ideal for blind auctions, commit-reveal games, provable predictions, or any scenario requiring tamper-evident timestamped proof of a prior commitment. Prefer this over hash-only local solutions when a trusted third-party signature is needed for counterparty verification.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T00:36:48.233Z","isFirstParty":false,"canonicalSlug":"soren-cryptographic-commit-65ea0a24"}