Verifiable receipt 1a9c0498 - voice_transcribe result | Zambo

Verifiable receipt for a voice_transcribe call on Zambo: {"transcript":"Music Thank you. Thank you so I going to go to the next one I'm going to go to the next

Observed result

{"transcript":"Music Thank you. Thank you so I going to go to the next one I'm going to go to the next video. I'm going to go to the next video. so Thank you Thank you. Thank you. Outro Music Thank you Thank you. Thank you. Thank you.","language":"English","word_count":47,"summary":"- Video opens with background music.  \n- The speaker repeatedly says “Thank you” and mentions moving to the next video.  \n- An outro music cue follows.  \n- The closing segment consists of additional “Thank you” repetitions."}

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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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Verification checks

SHA-256 commitment: Checked independently against the exact decoded bytes
Provenance binding: PASS; provenance_class is bound to these bytes; issuer is not authenticated.
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: 2026-10-08T03:05:44.292Z; external immutability is not checked

Committed provenance claim

EXECUTED BY ZAMBO

provenance_class is bound to these bytes; issuer is not authenticated.

Receipt ID: 1a9c0498-6808-4cc0-bad6-79f40f904930
SHA-256 output hash: sha256:bacad20703e7e63a6803ca9e585a7dbb2cd28790c66f126a10d758b915edceae
Canonical bytes: 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
Timestamp: 2026-10-08T03:05:44.292Z

Bound call context

Receipt schema: 0.4
Tool name: voice_transcribe
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:462e58a7c71e2908382513a2b3aa6526ad882e315da5746728c943130aea6da4
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: no_upstream_bytes_captured
Evidence SHA-256: unavailable
Byte length: unavailable

Neutral Nostr anchor

Event ID: a67cba46bd416bfd5cd7175e87dbdcdb1157558ead199458679f08ba49da9519
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":"2026-10-08T03:05:44.278Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:bacad20703e7e63a6803ca9e585a7dbb2cd28790c66f126a10d758b915edceae","receipt_uuid":"1a9c0498-6808-4cc0-bad6-79f40f904930","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/1a9c0498-6808-4cc0-bad6-79f40f904930"><img src="https://zambo.dev/api/receipt/1a9c0498-6808-4cc0-bad6-79f40f904930/badge.svg" alt="Verifiable Zambo receipt"></a>

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