Verifiable receipt 21af12cd - 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 · $83,076.00 USD\n24h change unavailable · Market cap: unavailable\n\nLive price via Coinbase · Tue, 29 Sep 2026 17:49:10 GMT","verify":{"status":"complete","message":"BTC-USD price and source were returned by the live price provider."}}

Provenance for every timeline entry

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

Proof of observed execution

EXECUTED BY ZAMBO

Receipt ID
21af12cd-e71b-4251-adb1-9701ec780baf
SHA-256 output hash
sha256:0f3ddfcdc8f66689ca2cc1a57fed5c4d226820428d6fd4eea9a0498e518c6be1
Canonical bytes
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
Timestamp

Bound call context

Receipt schema
0.3
Tool name
zambo_universal
Tool version
4.0.0
Permission scope
public
Caller type
anonymous
Caller ID
sha256:41ac00fa3868ac87d21e529b5f0b3a8aea25f3da5724c66c11c3f6bcdbcce13b
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:d58bcb1b68311b87e7cb0b90ff2b486ad7a733e5211122ba2cf77e3b01235c0d
Byte length
919

Fetch exact evidence bytes

Upstream provenance

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

Maximum comparable-source deviation: not comparable

Neutral Nostr anchor

Event ID
864c71c7402cf7faa47871c3fa12e3eaeb11e9003e62f68d5f365203a694a45b
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":"2026-09-29T17:49:10.862Z","evidence_byte_length":919,"evidence_sha256":"sha256:d58bcb1b68311b87e7cb0b90ff2b486ad7a733e5211122ba2cf77e3b01235c0d","evidence_url":"https://zambo.dev/api/evidence/d58bcb1b68311b87e7cb0b90ff2b486ad7a733e5211122ba2cf77e3b01235c0d","output_sha256":"sha256:0f3ddfcdc8f66689ca2cc1a57fed5c4d226820428d6fd4eea9a0498e518c6be1","receipt_uuid":"21af12cd-e71b-4251-adb1-9701ec780baf","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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Markdown

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HTML

<a href="https://zambo.dev/run/21af12cd-e71b-4251-adb1-9701ec780baf"><img src="https://zambo.dev/api/receipt/21af12cd-e71b-4251-adb1-9701ec780baf/badge.svg" alt="Verifiable Zambo receipt"></a>

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