Verifiable receipt b8d71310 - live_price result | Zambo

Verifiable receipt for a live_price call on Zambo: BTC · $85,448.57 USD ▼ 0.48% (24h) · Market cap: $1718.36B Live price via Coinbase · Wed, 23 Sep 2026 12:13:4

Observed result

BTC · $85,448.57 USD
▼ 0.48% (24h) · Market cap: $1718.36B

Live price via Coinbase · Wed, 23 Sep 2026 12:13:47 GMT

Check this receipt

This record shows the result and timestamp stored for the call. Recompute the SHA-256 commitment from the saved bytes in your browser; signatures and chain proofs are not checked.

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?

Zambo's receipt store reports a tool call and records its result. The SHA-256 commitment covers the exact canonical bytes. The provenance label is bound to v0.4 receipt bytes when that check passes, but no pinned signature or trusted issuer key is checked. An anchor can timestamp a fingerprint; it does not authenticate the issuer.

What is an execution receipt?

An execution receipt is a public record of a reported AI agent tool call. Its byte commitment and provenance claim can be checked independently; neither alone authenticates the issuer. Read the canonical definition of an AI agent execution receipt.

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

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Verification checks

SHA-256 commitment: Checked independently against the exact decoded bytes
Provenance binding: LEGACY; legacy receipt, provenance not cryptographically bound
Issuer authentication: NOT CHECKED; no pinned signing key or trusted issuer was supplied
Signature: NOT CHECKED; no Ed25519 signature or pinned key is supplied
Chain: NOT CHECKED; no append-only chain proof is validated
Stored timestamp: 2026-09-23T12:13:47.901Z; external immutability is not checked

Committed provenance claim

EXECUTED BY ZAMBO

legacy receipt, provenance not cryptographically bound

Receipt ID: b8d71310-de07-4227-bfaf-9b2e832bd0df
SHA-256 output hash: sha256:6a6d4b705bd760bcfd55af28f24eb822220f57dca40d632dcb1d0756ead236f5
Canonical bytes: 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
Timestamp: 2026-09-23T12:13:47.901Z

Bound call context

Receipt schema: 0.3
Tool name: live_price
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:dab7d2999747823119cb547ce5c4f7c75108e6c7a1a5e6c155aad5d8f3e988c1
Declared side effects: none
Side-effects schema: zambo-side-effects/1
Declaration hash: sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee

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: sha256:6529e19eb4c125e9bf94e997ea53c292ea8f4d6d0a8f8c25fb400947c088da2e
Byte length: 187

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: 2026-09-23T12:13:47.662Z · raw response hash: sha256:6529e19eb4c125e9bf94e997ea53c292ea8f4d6d0a8f8c25fb400947c088da2e
Source: Coinbase · queried at: 2026-09-23T12:13:47.774Z · raw response hash: sha256:33297592cbe95a72c667bc6eb37c905b62b1ac5dbf590b582ef8ca0a4df221fb

Maximum comparable-source deviation: not comparable

Neutral Nostr anchor

Event ID: 81ebab034a27e2ef5ae1c03a680abd7bc0749e0d56ef6af16359dac27f3f3252
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":"2026-09-23T12:13:47.828Z","evidence_byte_length":187,"evidence_sha256":"sha256:6529e19eb4c125e9bf94e997ea53c292ea8f4d6d0a8f8c25fb400947c088da2e","evidence_url":"https://zambo.dev/api/evidence/6529e19eb4c125e9bf94e997ea53c292ea8f4d6d0a8f8c25fb400947c088da2e","output_sha256":"sha256:6a6d4b705bd760bcfd55af28f24eb822220f57dca40d632dcb1d0756ead236f5","receipt_uuid":"b8d71310-de07-4227-bfaf-9b2e832bd0df","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

Recompute the SHA-256 commitment in your browser. Open the API v2 JSON response to inspect the machine-readable checks. Signature and chain remain NOT CHECKED unless a real signature verifier or chain proof is supplied. There is no combined “verified” verdict. See the Nostr anchor event on a public viewer. The fingerprint is timestamped outside Zambo too.

Embed this receipt

Markdown

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HTML

<a href="https://zambo.dev/run/b8d71310-de07-4227-bfaf-9b2e832bd0df"><img src="https://zambo.dev/api/receipt/b8d71310-de07-4227-bfaf-9b2e832bd0df/badge.svg" alt="Verifiable Zambo receipt"></a>

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