Verifiable receipt 177cfa3e - 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: 2026-10-18T15:18:17.031Z; 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

177cfa3e-02a8-5b04-a7f1-f9eb2138dbcc

SHA-256 output hash

sha256:0a032f84ccf8cad35b3125f9f0cda487d79a8ffbbb2652457baf716d3d6e83d2

Canonical bytes

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

Timestamp

2026-10-18T15:18:17.031Z

Bound call context

Receipt schema

0.4

Tool name

receipt_publication

Tool version

4.0.0

Permission scope

public

Caller type

session

Caller ID

sha256:0e0d0fc95b650c9012d76322409c0bf3c706e2e8b811f00c7071e08084e34534

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

18c61cbd0fc33169a687ea0721fa544726bcc9e42245b873b7cdbed354657e98

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":"2026-10-18T15:18:17.031Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:0a032f84ccf8cad35b3125f9f0cda487d79a8ffbbb2652457baf716d3d6e83d2","receipt_uuid":"177cfa3e-02a8-5b04-a7f1-f9eb2138dbcc","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.