Verifiable receipt 479b8a37 - 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":"6fb

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: 6fb6542e-760d-47a8-9080-0300cdbf2b2a source output hash: sha256:72280ac51b0540ec226f3d97e0599c2c7abc087ad8a4569260adefb5dd071a0f 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":2,"merkle_root":"41cadabb5480bb62c32683796953fffbfddc7c98456e5f91d3713b7a3f5630a8","children":[{"id":"d3b16794-b6e3-427f-a756-a910eae4f8dd","output_hash":"bdff40d5b1a46f7fe87e4cd4afb6f38c7f331a8c2899a478429035753b10feb6"},{"id":"4a5502a4-70c1-45d3-a726-7c3a8b28dc26","output_hash":"27feaa0f3f2c97403bc1324b755ecd15c0c4a36bca8669d2dfa8eae36d8da902"}],"message":"Created a workflow snapshot containing 2 eligible receipts. To seal this, call workflow_seal with ","first_closed_at":"2026-10-18T01:01:13.907Z","free_view_expires_at":"2026-10-19T01:01:13.907Z","page_state":"free","disclosure":"This workflow page is fully visible until 2026-10-19T01:01:13.907Z. 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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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: 2026-10-19T04:31:57.934Z; external immutability is not checked

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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"}}}

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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
479b8a37-67ea-5593-ab40-5819045906ba
SHA-256 output hash
sha256:4c12dbfb7ee8ae481e8bb86d40ae8708de38f99a7592d469d12a2a252f69ac99
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
sha256:91ab9ef593a808d51556e416dfb975d990d89e16b7071f871bd7f723672de4ba
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
935a486d84d7357b4760e231cc7b21dc7964660dee6a586b1950ddda34e4ccb7
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":"2026-10-19T04:31:57.934Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:4c12dbfb7ee8ae481e8bb86d40ae8708de38f99a7592d469d12a2a252f69ac99","receipt_uuid":"479b8a37-67ea-5593-ab40-5819045906ba","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/479b8a37-67ea-5593-ab40-5819045906ba/badge.svg)](https://zambo.dev/run/479b8a37-67ea-5593-ab40-5819045906ba?ref=badge)

HTML

<a href="https://zambo.dev/run/479b8a37-67ea-5593-ab40-5819045906ba?ref=badge"><img src="https://zambo.dev/api/receipt/479b8a37-67ea-5593-ab40-5819045906ba/badge.svg" alt="Verifiable Zambo receipt"></a>

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