Verifiable receipt 603f283e - zambo_check result | Zambo

Verifiable receipt for a zambo_check call on Zambo: {"status":"incomplete","confidence":"low","reason":"No run ID, receipt, proof, or observed result was suppli

Observed result

{"status":"incomplete","confidence":"low","reason":"No run ID, receipt, proof, or observed result was supplied, so completion cannot be confirmed.","evidence":[],"assertion_state":{"claimed":false,"observed":false,"verified":false,"scope":"not independently verified"},"freshness":{"checked_at":"2026-10-07T13:45:47.123Z","source_count":0,"newest_source_at":null},"conflicts":[],"risk":{"level":"high","side_effects":true,"reversible":"unknown","authorization":"unknown","approval_required":true,"reasons":["The request concerns an external action or execution; Zambo does not authorize it from a natural-language request alone."]},"provenance":{"method":"deterministic observations plus caller-supplied context","sources":[],"limitations":["A reachable source is not proof that its claims are true.","Caller-supplied claimed/verified fields are not independently authenticated."]},"recommended_action":"verify_more","next_action":"verify","proof":{"type":"integrity_hash","hash":"672b6b0137c8030df4938f43627ac05c5ae8b570f474a8e0ceb38b73ac5b5828","recorded_at":"2026-10-07T13:45:47.123Z","scope":"integrity of this check response and its observed evidence; not a universal truth certificate","independently_verifiable":false,"note":"This hash is not a persisted proof certificate. Use the dedicated proof capability only when a durable certificate is explicitly requested."},"next_capability":"zambo_check","zambo":{"capability":"zambo_check","next_capability":"zambo_check","mcp_available":true},"meta":{"check_type":"execution","latency_ms":0,"tool_calls":0,"upstream_latency_ms":0,"cache_hit":false,"free_limit":"20/day/IP"}}

Check this receipt

This record shows the result and timestamp stored for the call. Recompute the SHA-256 commitment from the saved bytes in your browser; signatures and chain proofs are not checked.

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?

An AI agent completed a tool call through Zambo, and this page records the result. The SHA-256 hash below fingerprints exactly what the agent produced. The timestamp shows when it ran. The Nostr anchor posts that fingerprint to public relays, so the record exists outside Zambo too. Check the hash yourself.

What is an execution receipt?

An execution receipt is the public record of one completed AI agent tool call. Read the canonical definition of an AI agent execution receipt.

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Verification checks

SHA-256 commitment: Recomputed by the linked API v2 check from the exact decoded bytes
Signature: NOT CHECKED; no Ed25519 signature or pinned key is supplied
Chain: NOT CHECKED; no append-only chain proof is validated
Stored timestamp: 2026-10-07T13:45:47.301Z; external immutability is not checked

Proof of observed execution

EXECUTED BY ZAMBO

Receipt ID: 603f283e-72fd-44a0-a5e4-5fc24df72e44
SHA-256 output hash: sha256:de20781b436592880fa07cbd4d1f5b10a3c0e94a214fcf6ac6a0081bb4c09a15
Canonical bytes: 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
Timestamp: 2026-10-07T13:45:47.301Z

Bound call context

Receipt schema: 0.3
Tool name: zambo_check
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:577b7dfbf096c56ec830024f049ba2805181f5870e27eb65b082c03da4b9f917
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: captured
Evidence SHA-256: sha256:34118e2309f42e941507132964970f8b488c02483394e56d19084bd4ab46b8ae
Byte length: 1628

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID: b6b75b6ce9e1a3c89a7325d78d8ef07cc5094c364df319e5d9f90eaf95946bdb
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":"2026-10-07T13:45:47.271Z","evidence_byte_length":1628,"evidence_sha256":"sha256:34118e2309f42e941507132964970f8b488c02483394e56d19084bd4ab46b8ae","evidence_url":"https://zambo.dev/api/evidence/34118e2309f42e941507132964970f8b488c02483394e56d19084bd4ab46b8ae","output_sha256":"sha256:de20781b436592880fa07cbd4d1f5b10a3c0e94a214fcf6ac6a0081bb4c09a15","receipt_uuid":"603f283e-72fd-44a0-a5e4-5fc24df72e44","schema_version":"zambo-receipt-anchor/1"}

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

Check this hash yourself

Recompute the SHA-256 commitment in your browser. Open the API v2 JSON response to inspect the machine-readable checks. Signature and chain remain NOT CHECKED unless a real signature verifier or chain proof is supplied. There is no combined “verified” verdict. See the Nostr anchor event on a public viewer. The fingerprint is timestamped outside Zambo too.

Embed this receipt

Markdown

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HTML

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