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gov.halowerk.com Snapshot Verify
x402
gov.halowerk.com Snapshot Verify is a paid API for AI agents from gov.halowerk.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Sorts unique scalar key/value entries, computes a canonical SHA-256 digest, and optionally verifies it against a claimed hash
Price / call$0.002
Success—
StatusUnknown
How this service works
Sorts unique scalar key/value entries through canonical JSON serialization and computes SHA-256. It verifies byte-level agreement with an optional claimed digest only; it does not prove block inclusion, timestamp, signer identity, or chain consensus.
Output
Returns the computed SHA-256 hex digest of the canonically sorted and serialized key/value entries. If a claimed_sha256 was provided, also returns a boolean indicating whether the computed digest matches the claimed one byte-for-byte. Does not attest to blockchain inclusion, timestamps, signer identity, or chain consensus.
Example use cases
Governance proposal audit trail
“I have 500 governance key/value entries from our DAO's last snapshot and a claimed SHA-256 digest of '3f2a9c...'. Can you verify that the entries I'm providing match that digest exactly?”
Tamper detection for off-chain data
“Before I accept this off-chain dataset of voter registration records, I want to make sure nothing was altered — can you compute a canonical SHA-256 over these entries and tell me the hash so I can compare it later?”
Cross-party data agreement check
“Both our team and the auditor have a copy of the same 200 config entries. Can you hash our version and check if it matches the digest '7bde44f...a1209c' that the auditor sent us?”
Technical details
Endpoint
POSThttps://gov.halowerk.com/v1/snapshot-verifyWhen to prefer
Choose this endpoint when you need a deterministic, canonical SHA-256 fingerprint of a flat key/value dataset and optionally want to verify it against a claimed digest. It is ideal for audit trails, tamper detection, and cross-party data agreement checks on scalar governance or configuration data. It does NOT provide blockchain proof, timestamp attestation, or signer verification — if those are required, use a dedicated notarization or on-chain anchoring service instead.
Side effects
- Duplicate keys in the entries array may cause ambiguous sorting or rejection
- entries array is empty (minItems: 1 violated) — returns validation error
- claimed_sha256 does not match the 64-character hex pattern — returns schema validation error
- entries array exceeds 50,000 items — rejected by schema
- key or value types outside the allowed scalar types (string, number, boolean, null) — rejected
- Payment failure via x402 protocol — endpoint returns 402 and does not process
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| entries | array | |
| claimed_sha256 | string |
Tags
x402
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