Verifiable receipt 2f94efe9 - 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 · $84,169.00 USD\n▼ 2.59% (24h) · Market cap: $1690.60B\n\nLive price via CoinGecko · Thu, 24 Sep 2026 06:32:39 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
2f94efe9-1ad0-4c9e-9d46-fae923ee8230
SHA-256 output hash
sha256:085bd205b76ee32c90ef5c52bf34fb2530d57785f265cc885e2e589fbb5d789d
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
sha256:76b11175df74988f4f3d3c2aca9229509383c1d88d71c78bc781b3bdaac32fb4
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:ce791678cba7358b4b769a162e8482be109701ca36277ec90bf008380c718fa5
Byte length
95

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
79953118608e565dc1579a3d0e3a73220dddd0b5de7bf1171bf36a138a0a71f8
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":"2026-09-24T06:32:39.847Z","evidence_byte_length":95,"evidence_sha256":"sha256:ce791678cba7358b4b769a162e8482be109701ca36277ec90bf008380c718fa5","evidence_url":"https://zambo.dev/api/evidence/ce791678cba7358b4b769a162e8482be109701ca36277ec90bf008380c718fa5","output_sha256":"sha256:085bd205b76ee32c90ef5c52bf34fb2530d57785f265cc885e2e589fbb5d789d","receipt_uuid":"2f94efe9-1ad0-4c9e-9d46-fae923ee8230","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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HTML

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