Verifiable receipt f5e7dd96 - 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

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.

Observed result

{"status":"executed","primary_tool":"live_price","executed":true,"executed_tools":["live_price"],"result":"BTC · $84,431.00 USD\n▼ 2.09% (24h) · Market cap: $1696.09B\n\nLive price via CoinGecko · Wed, 23 Sep 2026 21:57:59 GMT","verify":{"status":"complete","message":"BTC-USD price and source were returned by the live price provider."}}

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Verification checks

Proof of observed execution

EXECUTED BY ZAMBO

Receipt ID
f5e7dd96-d6d9-4dd5-8f54-84692324cf71
SHA-256 output hash
sha256:8b68a2fc805104b3ef11048f2fae35dd71656a37c898f19d485b380dda4ddc62
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
sha256:35fb0dc83c3baaaddc7ccd19be742490f9a08bc30c07337836af8bdead6718ba
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:fed5cd41b3f5163bf09c0978855a972e4f5444334030df2ca4276412157bbdcf
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.

Neutral Nostr anchor

Event ID
ba0b95cf34029553992a531dc6f132e083f2493e2c538e0755f90b18b83b0800
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":"2026-09-23T21:57:59.766Z","evidence_byte_length":98,"evidence_sha256":"sha256:fed5cd41b3f5163bf09c0978855a972e4f5444334030df2ca4276412157bbdcf","evidence_url":"https://zambo.dev/api/evidence/fed5cd41b3f5163bf09c0978855a972e4f5444334030df2ca4276412157bbdcf","output_sha256":"sha256:8b68a2fc805104b3ef11048f2fae35dd71656a37c898f19d485b380dda4ddc62","receipt_uuid":"f5e7dd96-d6d9-4dd5-8f54-84692324cf71","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.

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