Receipt publication · saved and checkable

Provenance for every timeline entry

• EXECUTED BY ZAMBOZambo ran the tool call itself.
• OBSERVED VIA GATEWAYA Zambo gateway observed request and response bytes from the named external executor. Zambo did not run that external action.
• LOGGED BY AGENTAn agent or local hook reported the action. Zambo attests that the record is unchanged since logging, not that the action happened as described.

Private agent reasoning, built-in client actions, and direct calls to unrelated MCP servers are not included unless an agent or gateway reports them.

What is this receipt?

This is a verifiable receipt for a journal entry. It confirms receipt, redaction, timestamping, and chaining. It does not attest to execution.

What is this?

Zambo's receipt store reports a journal entry from an agent or local hook. The SHA-256 commitment covers the receipt bytes. The provenance label is only a claim, not proof of issuer identity or that the reported action happened.

Verification checks

• SHA-256 commitment: Checked independently against the exact decoded bytes
• Provenance binding: PASS; The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.
• Metadata binding: PASS; metadata_hash matches the canonical metadata block.
• Issuer authentication: NOT CHECKED; no pinned signing key or trusted issuer was supplied
• Signature: NOT CHECKED; no Ed25519 signature or pinned key is supplied
• Chain: NOT CHECKED; no append-only chain proof is validated
• Stored timestamp: 2026-11-07T13:51:02.746Z; external immutability is not checked

Committed provenance claim

LOGGED BY AGENT

The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.

Receipt ID

f6ff99e0-be2d-501b-aa42-38c945a75773

SHA-256 output hash

sha256:4311af18c825ab98fb7a5912a4da281f88f966da83684ede41f0372c0d0942d8

Canonical bytes

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

Timestamp

2026-11-07T13:51:02.746Z

Bound call context

Receipt schema

0.4

Tool name

receipt_publication

Tool version

4.0.0

Permission scope

public

Caller type

session

Caller ID

sha256:3ab30d5169c7c1045b0a900bd80a50abb7c1cd9558ede9887d10921d89318441

Declared side effects

none

Side-effects schema

zambo-side-effects/1

Declaration hash

sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee

This records what the server-side tool contract declared at call time. It does not independently verify that a downstream side effect happened.

Bound upstream evidence

Status

empty

Evidence SHA-256

unavailable

Byte length

unavailable

Neutral Nostr anchor

Event ID

f1bbf74268102f372c921d85dd958f19da149072646bf976e99d3d91437a4793

Anchor status

failed

Public key

e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41

Relay hints: wss://relay.damus.io · wss://nos.lol · wss://relay.primal.net

Schema: zambo-receipt-anchor/1

Anchor envelope bytes:

{"anchored_at":"2026-11-07T13:51:02.746Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:4311af18c825ab98fb7a5912a4da281f88f966da83684ede41f0372c0d0942d8","receipt_uuid":"f6ff99e0-be2d-501b-aa42-38c945a75773","schema_version":"zambo-receipt-anchor/1"}

Anchor status "failed": Publication was not confirmed by any configured relay target.

Check this hash yourself

Receipt commitment: commitment matched; issuer, signature and chain not checked. This checks the saved bytes, not whether the answer was correct. Recompute the SHA-256 commitment in your browser. Open the API v2 JSON response to inspect the machine-readable checks. See the Nostr anchor event on a public viewer. The fingerprint is timestamped outside Zambo too.