Verifiable receipt 304f4dd3 - receipt_publication result | Zambo

✓ This result hasn’t changed since it was saved.

Saved:
What was asked: The request recorded for this receipt.

Zambo is the verifiable work layer for AI.

Zambo is the verifiable work layer for AI. Verifiable receipt for a receipt_publication call on Zambo: {"schema":"zambo.redacted-receipt-publication/1","redacted_projection":true,"source_receipt_id":"fa5

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: fa512cd8-6af4-4d7c-ae30-174a8bae66e8 source output hash: sha256:79d375c8f42490ada18116abfc1e5cb41bb799b97965bf1716ba238e6145df40 source tool: workflow_close publication notice: This is a newly committed redacted publication copy, not the original tool output. The original commitment is unchanged and its private bytes are withheld. output: {"count":3,"merkle_root":"7939977021a4ee0b2c7e24679609a7b79e1dd14025c57e4d85b23e906b268111","children":[{"id":"0d1b711a-0376-4602-b230-93060e766765","output_hash":"4ee6e206ed138866a9cf36c5c42cab4ea90e38b044d514b0b2fd69b8146b3076"},{"id":"6c632066-b152-4f7e-bff5-3e5a14c038f4","output_hash":"420db5c7129f84d2f119f037d39397fa07e1202bb9055359977f9d91d97364d7"},{"id":"bab0fb22-7964-4c79-a702-0faf3d0d47a0","output_hash":"7b67d40bccb9e8c5bd3fd798a296b8ae692ab7bc6ab966c2b6c5969723fff8e3"}],"message":"Created a workflow snapshot containing 3 eligible receipts. To seal this, call workflow_seal with ","first_closed_at":"2026-10-16T10:22:42.928Z","free_view_expires_at":"2026-10-17T10:22:42.928Z","page_state":"free","disclosure":"This workflow page is fully visible until 2026-10-17T10:22:42.928Z. Seal it to keep it, add your branding, and get the PDF pack. Individual receipts stay available either way.","disclosure_note":"Expiry is currently disabled, so no workflow page is expiring right now.","verification_status":"not_verified","issuer_authenticated":false}

This is the saved result preview, not proof that the answer was correct.

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Show technical provenance details

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 receipt?

This is a verifiable receipt for a journal entry. It confirms receipt, redaction, timestamping, and chaining. It does not attest to execution.

What the receipt can and cannot prove

What is this?

Zambo's receipt store reports a journal entry from an agent or local hook. The SHA-256 commitment covers the receipt bytes. The provenance label is only a claim, not proof of issuer identity or that the reported action happened.

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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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Show technical verification checks

Verification checks

  • SHA-256 commitment: Checked independently against the exact decoded bytes
  • Provenance binding: PASS; The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.
  • Metadata binding: PASS; metadata_hash matches the canonical metadata block.
  • 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: 2026-10-18T16:20:13.496Z; external immutability is not checked

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Add to my AI ·

Get receipts for your own AI work: add zambo.dev/mcp

One URL, no key. Copy the line for your AI and add it yourself in its settings.

  • ClaudeSettings, Connectors, Add custom connector, paste the URL.
    https://zambo.dev/mcp
  • ChatGPTSettings, Apps and Connectors, developer mode, create a connector with this URL.
    https://zambo.dev/mcp
  • GrokAdd a remote MCP server in your Grok client and paste the URL.
    https://zambo.dev/mcp
  • CursorPaste into ~/.cursor/mcp.json.
    {"mcpServers":{"zambo":{"url":"https://zambo.dev/mcp"}}}

Nothing is installed automatically. Full setup guides

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Show receipt data and verification evidence

Committed provenance claim

LOGGED BY AGENT

The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.

Receipt ID
304f4dd3-11e0-5b71-aee7-e57884accbd3
SHA-256 output hash
sha256:f7fa361bbad290ea640e2cdf1e13045aa48b629dc5b15c336eba0681a57817a3
Canonical bytes
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
Timestamp

Bound call context

Receipt schema
0.4
Tool name
receipt_publication
Tool version
4.0.0
Permission scope
public
Caller type
session
Caller ID
sha256:41d44f8a56cda768b6c8d40442eab04506cd953c2fb58d6cb5632966e74eedf1
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
e811e9a82a8cee10baedce0b8e6d66aeed30bdb32d896e30f339975d22517e62
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":"2026-10-18T16:20:13.496Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:f7fa361bbad290ea640e2cdf1e13045aa48b629dc5b15c336eba0681a57817a3","receipt_uuid":"304f4dd3-11e0-5b71-aee7-e57884accbd3","schema_version":"zambo-receipt-anchor/1"}

Anchor status "published": Published to all configured relay targets.

Check this hash yourself

Receipt commitment: commitment matched; issuer, signature and chain not checked. This checks the saved bytes, not whether the answer was correct. Recompute the SHA-256 commitment in your browser. Open the API v2 JSON response to inspect the machine-readable checks. See the Nostr anchor event on a public viewer. The fingerprint is timestamped outside Zambo too.

Embed this receipt

Markdown

[![Verifiable Zambo receipt](https://zambo.dev/api/receipt/304f4dd3-11e0-5b71-aee7-e57884accbd3/badge.svg)](https://zambo.dev/run/304f4dd3-11e0-5b71-aee7-e57884accbd3?ref=badge)

HTML

<a href="https://zambo.dev/run/304f4dd3-11e0-5b71-aee7-e57884accbd3?ref=badge"><img src="https://zambo.dev/api/receipt/304f4dd3-11e0-5b71-aee7-e57884accbd3/badge.svg" alt="Verifiable Zambo receipt"></a>

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