# Soren Cryptographic Commit

> 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.

## Facts

- Endpoint: GET https://soren.com/v1/commit?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/soren-cryptographic-commit-65ea0a24
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bREG14tEYvG1lKgZmK9v9

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability soren-cryptographic-commit-65ea0a24
```

Example prompt: 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.

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "$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
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/soren-cryptographic-commit-65ea0a24/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from soren.com](https://www.zero.xyz/host/soren.com/llms.txt)