Verifiable receipt 0c649016 - receipt_publication result | Zambo

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: 2026-10-18T17:24:13.292Z; 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

0c649016-554a-5987-a8b2-3717451ffcf4

SHA-256 output hash

sha256:7cb9782c2613586e358be0c004ba4f9264fe19c81e4578a0f3c42a836487b446

Canonical bytes

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

Timestamp

2026-10-18T17:24:13.292Z

Bound call context

Receipt schema

0.4

Tool name

receipt_publication

Tool version

4.0.0

Permission scope

public

Caller type

session

Caller ID

sha256:14a039f91e177ce767e985b9a703cabf752ab6fcf41d03d8223fce672971b597

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

no_upstream_bytes_captured

Evidence SHA-256

unavailable

Byte length

unavailable

Neutral Nostr anchor

Event ID

a2bef8326e3874ac01f7075d8829c61a700109a91ce8aa36352d7086c9c7c417

Anchor status

published

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":"2026-10-18T17:24:13.292Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:7cb9782c2613586e358be0c004ba4f9264fe19c81e4578a0f3c42a836487b446","receipt_uuid":"0c649016-554a-5987-a8b2-3717451ffcf4","schema_version":"zambo-receipt-anchor/1"}

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

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.