Verifiable receipt f6077128 - 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: 2026-10-19T02:05:56.675Z; 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

f6077128-7db4-5ba4-ad77-64e7bb4c7597

SHA-256 output hash

sha256:63f6de2a46e1a80065a0b6231fcefb046bf3a25c6822c4c474662d23ce719de8

Canonical bytes

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

Timestamp

2026-10-19T02:05:56.675Z

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:b60a7704f98f171bd81912972968649a3aa8263eb73aaff7ffc5232d26d74bff

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

d93b01660faa9ff3ba8033779b4efb7ccc7dcab1a8628497f8d0933041e10b0d

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":"2026-10-19T02:05:56.675Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:63f6de2a46e1a80065a0b6231fcefb046bf3a25c6822c4c474662d23ce719de8","receipt_uuid":"f6077128-7db4-5ba4-ad77-64e7bb4c7597","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.