Verifiable receipt f76d0992 - zambo_universal result | Zambo

Verifiable receipt for a zambo_universal call on Zambo: {"status":"executed","primary_tool":"live_price","executed":true,"executed_tools":["live_price"],"result

Observed result

{"status":"executed","primary_tool":"live_price","executed":true,"executed_tools":["live_price"],"result":"BTC · $83,158.00 USD\n▼ 1.54% (24h) · Market cap: $1670.68B\n\nLive price via CoinGecko · Mon, 28 Sep 2026 22:04:08 GMT","verify":{"status":"complete","message":"BTC-USD price and source were returned by the live price provider."}}

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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This receipt proves the call completed. When the free allowance is not enough, choose the access path that fits the job.

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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: 2026-09-28T22:04:08.951Z

Proof of observed execution

EXECUTED BY ZAMBO

Receipt ID: f76d0992-d168-480b-b36e-ff215d9d919f
SHA-256 output hash: sha256:25fcfa7da00cc3a4d4844cc04056649e7c81198e4397484d7d4ae736132f9e75
Canonical bytes: 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
Timestamp: 2026-09-28T22:04:08.951Z

Bound call context

Receipt schema: 0.3
Tool name: zambo_universal
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:494fe4431a5fa5729c3af8b5e365e49051fa083d74f21f58fae5395621901bff
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: captured
Evidence SHA-256: sha256:591dffb806a5ccd89b0fc80f0da2b087c2de2497e63ffd2b2d0be88239d7e3a0
Byte length: 98

Fetch exact evidence bytes

Upstream provenance

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

Source: CoinGecko · queried at: 2026-09-28T22:04:08.825Z · raw response hash: sha256:591dffb806a5ccd89b0fc80f0da2b087c2de2497e63ffd2b2d0be88239d7e3a0

Neutral Nostr anchor

Event ID: edd5cc0d0605c097725438d4ed99efb100f9b1b6d140b6fdd50d8fb1630a752c
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":"2026-09-28T22:04:08.876Z","evidence_byte_length":98,"evidence_sha256":"sha256:591dffb806a5ccd89b0fc80f0da2b087c2de2497e63ffd2b2d0be88239d7e3a0","evidence_url":"https://zambo.dev/api/evidence/591dffb806a5ccd89b0fc80f0da2b087c2de2497e63ffd2b2d0be88239d7e3a0","output_sha256":"sha256:25fcfa7da00cc3a4d4844cc04056649e7c81198e4397484d7d4ae736132f9e75","receipt_uuid":"f76d0992-d168-480b-b36e-ff215d9d919f","schema_version":"zambo-receipt-anchor/1"}

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

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.

Embed this receipt

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