Verifiable receipt b34407c7 - 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 · $84,441.00 USD\n▼ 2.11% (24h) · Market cap: $1696.30B\n\nLive price via CoinGecko · Wed, 23 Sep 2026 21:57:49 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
b34407c7-4721-451a-a0ec-c8fe4ef24d35
SHA-256 output hash
sha256:08025a9719cdc583852c1b736b78c4df7ac1fdcbdbf659a520d68a9198b5ce81
Canonical bytes
eyJjYWxsZXIiOnsiaWQiOiJzaGEyNTY6MzVmYjBkYzgzYzNiYWFhZGRjN2NjZDE5YmU3NDI0OTBmOWEwOGJjMzBjMDczMzc4MzZhZjhiZGVhZDY3MThiYSIsInR5cGUiOiJhbm9ueW1vdXMifSwib3V0cHV0Ijp7ImV4ZWN1dGVkIjp0cnVlLCJleGVjdXRlZF90b29scyI6WyJsaXZlX3ByaWNlIl0sInByaW1hcnlfdG9vbCI6ImxpdmVfcHJpY2UiLCJyZXN1bHQiOiJCVEMgwrcgJDg0LDQ0MS4wMCBVU0RcbuKWvCAyLjExJSAoMjRoKSDCtyBNYXJrZXQgY2FwOiAkMTY5Ni4zMEJcblxuTGl2ZSBwcmljZSB2aWEgQ29pbkdlY2tvIMK3IFdlZCwgMjMgU2VwIDIwMjYgMjE6NTc6NDkgR01UIiwic3RhdHVzIjoiZXhlY3V0ZWQiLCJ2ZXJpZnkiOnsibWVzc2FnZSI6IkJUQy1VU0QgcHJpY2UgYW5kIHNvdXJjZSB3ZXJlIHJldHVybmVkIGJ5IHRoZSBsaXZlIHByaWNlIHByb3ZpZGVyLiIsInN0YXR1cyI6ImNvbXBsZXRlIn19LCJyZWNlaXB0X3NjaGVtYV92ZXJzaW9uIjoiMC4zIiwic2lkZV9lZmZlY3RzIjp7ImRlY2xhcmF0aW9uX2hhc2giOiJzaGEyNTY6ZGZiNDQxMmFhNDI5ZDNhYzYzN2EwNTY2OGM0MzViY2M5MGEyNTEzNjNmY2RkNDlmN2I4NWFlNGFiNTViNWJjOSIsImRlY2xhcmVkIjpbInN0YXRlX3dyaXRlIl0sInNjaGVtYV92ZXJzaW9uIjoiemFtYm8tc2lkZS1lZmZlY3RzLzEifSwidG9vbCI6eyJuYW1lIjoiemFtYm9fdW5pdmVyc2FsIiwic2NvcGUiOiJwdWJsaWMiLCJ2ZXJzaW9uIjoiNC4wLjAifX0=
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
sha256:0048007dd75eab802237224560cc9d58ff7e379e94d74fe61947d8737918f005
Byte length
97

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
d35bddd199a2bfd0b26f8c568df3344ca53705ff943ef5efa239797ec79b7274
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":"2026-09-23T21:57:49.997Z","evidence_byte_length":97,"evidence_sha256":"sha256:0048007dd75eab802237224560cc9d58ff7e379e94d74fe61947d8737918f005","evidence_url":"https://zambo.dev/api/evidence/0048007dd75eab802237224560cc9d58ff7e379e94d74fe61947d8737918f005","output_sha256":"sha256:08025a9719cdc583852c1b736b78c4df7ac1fdcbdbf659a520d68a9198b5ce81","receipt_uuid":"b34407c7-4721-451a-a0ec-c8fe4ef24d35","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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