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: 2026-11-08T23:02:42.862Z; 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

3f9093fb-4ff0-563b-a4bb-1b62af4a1095

SHA-256 output hash

sha256:543457012c0d9b2e7c0300a193129cb815a21eefabb49ba7b26d42a37b46b122

Canonical bytes

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

Timestamp

2026-11-08T23:02:42.862Z

Bound call context

Receipt schema

0.4

Tool name

receipt_publication

Tool version

4.0.0

Permission scope

public

Caller type

session

Caller ID

sha256:34ad3c29ee4cdf7cebaeb447f821b3fdd2f186bfa34ad1f62ee9e54adcd6818d

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

f5213ee55e1d1fab5c75b1b0e8e3d9e0877ed634e297ab8ee15e4b558fb8d5f3

Anchor status

published

Public key

e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41

Relay hints: wss://relay.primal.net

Schema: zambo-receipt-anchor/1

Anchor envelope bytes:

{"anchored_at":"2026-11-08T23:02:42.862Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:543457012c0d9b2e7c0300a193129cb815a21eefabb49ba7b26d42a37b46b122","receipt_uuid":"3f9093fb-4ff0-563b-a4bb-1b62af4a1095","schema_version":"zambo-receipt-anchor/1"}

Anchor status "published": Published to all configured relay targets.

Relay publication is separate from receipt integrity. When the original signed event is available, Zambo retries pending, partial, or failed anchors about once a minute. Relay acknowledgements are external, so there is no guaranteed completion time; the receipt remains checkable from its saved bytes and verification link.

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.