A note in your job log · 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: 2026-11-05T01:24:22.052Z; 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

fc656bfa-2c7a-45be-ad1a-190d52c69bf8

SHA-256 output hash

sha256:6cc925f456aad5b60f4ab3310b9155e8039d0f5fe963e8a94f3ee5dfdea690f6

Canonical bytes

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

Timestamp

2026-11-05T01:24:22.052Z

Bound call context

Receipt schema

0.4

Tool name

journal_log

Tool version

4.0.0

Permission scope

public

Caller type

session

Caller ID

sha256:937fdedf892f87bacc90c6d2ae4e47c9055e72559beb1b92bd4985a2d02e4613

Declared side effects

state_write

Side-effects schema

zambo-side-effects/1

Declaration hash

sha256:dfb4412aa429d3ac637a05668c435bcc90a251363fcdd49f7b85ae4ab55b5bc9

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

Upstream provenance

This receipt is independently auditable against the named upstream source. This is not a mathematical correctness claim.

• Source: · queried at: · raw response hash:

Neutral Nostr anchor

Event ID

13f898106ad0aa7e2a8786a64dc83b3401254b2ec680e345c863b9da56ae1495

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":"2026-11-05T01:24:22.052Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:6cc925f456aad5b60f4ab3310b9155e8039d0f5fe963e8a94f3ee5dfdea690f6","receipt_uuid":"fc656bfa-2c7a-45be-ad1a-190d52c69bf8","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.