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: 2026-11-08T19:27:22.067Z; 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

8af2582f-6679-5df7-adeb-e121eef343e5

SHA-256 output hash

sha256:38fe038d812c2eb7e9ae6b7609a47123c77956c79d677a300cd4ea87c972c806

Canonical bytes

eyJjYWxsZXIiOnsiaWQiOiJzaGEyNTY6YmI4OWIyNGNhN2Y2MDdiZDZkMGRhZTY3MDI5MGUyMTQ4OGQ0ODAyMGUxNTU5MGRhZGMzOWFjODQ0MGFkZGUyMiIsInR5cGUiOiJzZXNzaW9uIn0sImlzc3Vlcl9jbGFpbXMiOnsicHJvdmVuYW5jZV9jbGFzcyI6IkxPR0dFRCBCWSBBR0VOVCJ9LCJvdXRwdXQiOnsib3V0cHV0Ijoie1widHlwZVwiOlwidmVyaWZpYWJsZS13b3JrZmxvdy1yZWNlaXB0XCIsXCJ2ZXJzaW9uXCI6XCIxXCIsXCJ3b3JrZmxvd19pZFwiOlwiNzRmY2MyODYtZWQ5NC01MWYzLWI5YTktYWYyZTNlMGZiODNiXCIsXCJnb2FsXCI6XCJGaW5kIHRoZSBjdXJyZW50IEJUQy9VU0QgcHJpY2UgZnJvbSBhIHJlYWQtb25seSBzb3VyY2UgYW5kIHJldHVybiB0aGUgc291cmNlLlwiLFwic3RhdHVzXCI6XCJva1wiLFwiYWdlbnRcIjp7XCJmcmFtZXdvcmtcIjpudWxsLFwibW9kZWxcIjpudWxsfSxcInN0ZXBzXCI6W3tcInNlcVwiOjEsXCJ0b29sXCI6XCJ6YW1ib191bml2ZXJzYWxcIixcInJlY2VpcHRfaWRcIjpcImEwYzU3ZWY2LTRkZGQtNDI3Yi04ZGRkLWQ1ZWQ0ZmJkNmEzZVwiLFwicmVjZWlwdF9oYXNoXCI6XCJhODQ0ZTI2OGViMDg1NzI3NjUwY2JlNTgyZGRkNmQ1ZmUwZTAyYzRlZWVkNGYyNmI1NWQyNWYzZTkxYjYyZGYwXCIsXCJzdGFydGVkX2F0XCI6XCIyMDI2LTA5LTI1VDA5OjIzOjQ0LjQ3MVpcIixcImVuZGVkX2F0XCI6XCIyMDI2LTA5LTI1VDA5OjIzOjQ0LjYwN1pcIixcInN0YXR1c1wiOlwib2tcIn1dLFwibWVya2xlX3Jvb3RcIjpcIjA2NWFjZTY4ODc2ZTM3ODY1ZjE4MGJmMzQ4OWJjYzJlYjFmYTI1ZWM3NGIwYzE2ZTY5ZTM4YmRmMTI2ZDYwMzNcIixcInJvbGx1cHNcIjp7XCJzdGVwX2NvdW50XCI6MSxcImR1cmF0aW9uX21zXCI6MTM2LFwiZXJyb3JzXCI6MCxcInRvdGFsX3Rva2Vuc1wiOm51bGx9LFwib3V0cHV0X2hhc2hcIjpcIjc0MjExNGEwYmZlYjY4ZTlkNDE2NmI4MTlmNDI0ZmE5YjIwYjU1ZGZkNzA1Y2FhYTUwNzRmMGRkYjRlN2ZiMjZcIixcInJlY2VpcHRfaWRcIjpcImQ5ZWYyOWVkLWUyMWUtNTc3OS04ZmMzLThlNGE2MTlkYjYzY1wiLFwidmVyaWZ5X3VybFwiOlwiaHR0cHM6Ly96YW1iby5kZXYvd29ya2Zsb3cvNzRmY2MyODYtZWQ5NC01MWYzLWI5YTktYWYyZTNlMGZiODNiXCJ9IiwicHVibGljYXRpb25fbm90aWNlIjoiVGhpcyBpcyBhIG5ld2x5IGNvbW1pdHRlZCByZWRhY3RlZCBwdWJsaWNhdGlvbiBjb3B5LCBub3QgdGhlIG9yaWdpbmFsIHRvb2wgb3V0cHV0LiBUaGUgb3JpZ2luYWwgY29tbWl0bWVudCBpcyB1bmNoYW5nZWQgYW5kIGl0cyBwcml2YXRlIGJ5dGVzIGFyZSB3aXRoaGVsZC4iLCJyZWRhY3RlZF9wcm9qZWN0aW9uIjp0cnVlLCJzY2hlbWEiOiJ6YW1iby5yZWRhY3RlZC1yZWNlaXB0LXB1YmxpY2F0aW9uLzEiLCJzb3VyY2Vfb3V0cHV0X2hhc2giOiJzaGEyNTY6MDg3NjZjYWM5MTEzMDQ5MjgzZmUzMTRjOWYwZDRmNGM0M2U2MWNiNDU0YTVjNGJkMjU5MGI3ZTNiMzc5YTNmMyIsInNvdXJjZV9yZWNlaXB0X2lkIjoiZDllZjI5ZWQtZTIxZS01Nzc5LThmYzMtOGU0YTYxOWRiNjNjIiwic291cmNlX3Rvb2wiOiJ3b3JrZmxvd19yZWNlaXB0In0sInJlY2VpcHRfc2NoZW1hX3ZlcnNpb24iOiIwLjQiLCJzaWRlX2VmZmVjdHMiOnsiZGVjbGFyYXRpb25faGFzaCI6InNoYTI1Njo0NWFhZDM4ZjNhYTk4MmI5YWFmZTkyZWNiNDE2ZWJlOTg3OTFlZGRiYWY4YWI2ZGYwYmQwODYwNWI3YzFiZmVlIiwiZGVjbGFyZWQiOlsibm9uZSJdLCJzY2hlbWFfdmVyc2lvbiI6InphbWJvLXNpZGUtZWZmZWN0cy8xIn0sInRvb2wiOnsibmFtZSI6InJlY2VpcHRfcHVibGljYXRpb24iLCJzY29wZSI6InB1YmxpYyIsInZlcnNpb24iOiI0LjAuMCJ9fQ==

Timestamp

2026-11-08T19:27:22.067Z

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:bb89b24ca7f607bd6d0dae670290e21488d48020e15590dadc39ac8440adde22

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

597b8024098d82ff82f65996073989d31635197196693a45018bd6f2cd669bcb

Anchor status

published

Public key

e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41

Relay hints: wss://relay.primal.net

Schema: zambo-receipt-anchor/1

Anchor envelope bytes:

{"anchored_at":"2026-11-08T19:27:22.067Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:38fe038d812c2eb7e9ae6b7609a47123c77956c79d677a300cd4ea87c972c806","receipt_uuid":"8af2582f-6679-5df7-adeb-e121eef343e5","schema_version":"zambo-receipt-anchor/1"}

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

Relay publication is separate from receipt integrity. When the original signed event is available, Zambo retries pending, partial, or failed anchors about once a minute. Relay acknowledgements are external, so there is no guaranteed completion time; the receipt remains checkable from its saved bytes and verification link.

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.