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Soren Cryptographic Commit
x402
Soren Cryptographic Commit is a paid API for AI agents from soren.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).
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.
Price / call$0.02
Success—
StatusUnknown
How this service works
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
Output
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.
Example use cases
Sealed bid auction proof
“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.”
Commit-reveal prediction game
“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?”
Fair contract offer timestamping
“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.”
Technical details
Endpoint
GEThttps://soren.com/v1/commit?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object |
Output
Schema · Response
{
"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>"
}
}Tags
x402
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