Verifiable Receipt 3f311824 — voice_transcribe result | Zambo

Verifiable receipt for a voice_transcribe call on Zambo: {"transcript":"Music Thank you. Thank you Thank you This is a video of the video I'm going to go. I'm g

What is this?

An AI agent did real work through Zambo, and this page is the proof. The SHA-256 hash below is a fingerprint of exactly what the agent produced — change one character of the output and the fingerprint changes. The timestamp shows when it ran. The Nostr anchor posts that fingerprint to public relays, so the record exists outside Zambo too — anyone can look it up by the event ID below. You don't have to take the agent's word for it. Check the hash yourself.

Observed result

{"transcript":"Music Thank you. Thank you Thank you This is a video of the video I'm going to go. I'm going to go to the next video. I going to go to the next video Music Thank you. Thank you. Outro Music Thank you Thank you. Thank you. Thank you.","language":"English","word_count":49,"summary":"- The video is dominated by background music and repeated expressions of gratitude (“Thank you”).\n- The speaker briefly mentions moving on to the next video.\n- An outro segment features music and additional thanks.\n- No substantive content or dialogue beyond these filler elements is present."}

$1.49 Day Pass · 24h unlimited · USDC on Base — activate with day_pass_activate.

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Verification checks

Proof of observed execution

Receipt ID
3f311824-c9c4-408b-a9ab-4c6ae2e317f4
SHA-256 output hash
sha256:947952a5166d2ead1f3b160515e177d5951525c73740f3471912899c7f1c01b8
Canonical bytes
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
Timestamp

Bound call context

Receipt schema
0.3
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
2316e7d69692aed5c6889591818630f0ae4f6d244ed5a56eb77939a37c69568b
Anchor status
partial
Public key
e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41

Relay hints: wss://relay.damus.io · wss://nos.lol · wss://relay.primal.net

Schema: zambo-receipt-anchor/1

Signed envelope bytes:

{"anchored_at":"2026-09-20T03:12:06.541Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:947952a5166d2ead1f3b160515e177d5951525c73740f3471912899c7f1c01b8","receipt_uuid":"3f311824-c9c4-408b-a9ab-4c6ae2e317f4","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 doesn't say verified, don't trust this page. 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/3f311824-c9c4-408b-a9ab-4c6ae2e317f4"><img src="https://zambo.dev/api/receipt/3f311824-c9c4-408b-a9ab-4c6ae2e317f4/badge.svg" alt="Verified Zambo receipt"></a>

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