Verifiable receipt 8e26f46e - 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":"2026-10-03T10:06:30.556Z","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":"eaab8bd9c39d4a3a59960125d024919a37e452aae71a4c53a80ec2fd7d56abda","recorded_at":"2026-10-03T10:06:30.556Z","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"}}

Verify this receipt

This is a verifiable receipt: the result above is hashed and timestamped at a permanent URL.

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

Integrity check: Recomputable from canonical bytes
Issued by zambo.dev: Served from the zambo.dev receipt store
Chain valid: Receipt hash chain is internally consistent
Recorded in the immutable log: 2026-10-03T10:06:30.723Z

Proof of observed execution

EXECUTED BY ZAMBO

Receipt ID: 8e26f46e-413e-4145-bd42-6df1bfc5ce28
SHA-256 output hash: sha256:afca3ed86092232025c3e1258a960a76a37973df8d6249a2c62cecdc0ee24e4a
Canonical bytes: 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
Timestamp: 2026-10-03T10:06:30.723Z

Bound call context

Receipt schema: 0.3
Tool name: zambo_check
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:19782625e7081794e6f117ccd70920ab943fc80e3962900a602458d024e7b1e2
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: sha256:32c592df1f89eb2ce9fb207741305dd5dec203f2fa55e15ff6c396c4cd17f937
Byte length: 1628

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID: 4df4301063d8e001962a3b250b95d67d2cd8c074dc2b187510a37e5248945a38
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":"2026-10-03T10:06:30.697Z","evidence_byte_length":1628,"evidence_sha256":"sha256:32c592df1f89eb2ce9fb207741305dd5dec203f2fa55e15ff6c396c4cd17f937","evidence_url":"https://zambo.dev/api/evidence/32c592df1f89eb2ce9fb207741305dd5dec203f2fa55e15ff6c396c4cd17f937","output_sha256":"sha256:afca3ed86092232025c3e1258a960a76a37973df8d6249a2c62cecdc0ee24e4a","receipt_uuid":"8e26f46e-413e-4145-bd42-6df1bfc5ce28","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

Open the verification endpoint. The server recomputes the SHA-256 from the stored bytes and answers verified:true. If it does not say verified, do not trust this page. See the Nostr anchor event on a public viewer. The fingerprint is timestamped outside Zambo too.

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