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: 2026-11-07T10:54:06.652Z; 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

82107ab6-3471-5b87-a23b-d33af5319ac8

SHA-256 output hash

sha256:58b7cd7e5c1c4149fb85abefb0588ccc83b9b1a52cefc7d768ae993bf4a3bb58

Canonical bytes

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

Timestamp

2026-11-07T10:54:06.652Z

Bound call context

Receipt schema

0.4

Tool name

receipt_publication

Tool version

4.0.0

Permission scope

public

Caller type

session

Caller ID

sha256:59dce2465f88662fb643600a1a51c7ecc26e1633d0ca0e9aefb06f0327eb2720

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

f9ef597a0ddcb6ae0247abcc9fabe26d74453d32572585bb99c43a76344f0076

Anchor status

partial

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":"2026-11-07T10:54:06.652Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:58b7cd7e5c1c4149fb85abefb0588ccc83b9b1a52cefc7d768ae993bf4a3bb58","receipt_uuid":"82107ab6-3471-5b87-a23b-d33af5319ac8","schema_version":"zambo-receipt-anchor/1"}

Anchor status "partial": Published to some configured relay targets; publication was not confirmed by every configured relay.

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.