Verifiable receipt 3f72a3c6 - 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":"d04

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: d0497f26-7c3f-40c6-90d6-6a92baec6f50 source output hash: sha256:4d8a9cc644a3603911f4815aace5416b949542ac01b7fd232688bbea51f41c1b 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":"b1017ff6a90c28dbf904616e4839834174621049d267ccaa790ff501a0997c66","children":[{"id":"22ac1a6d-a215-448c-9013-eeae791ab06a","output_hash":"07c10d78d6a44e554bdcc25d8b2dd0164f29535c7c4159afec435c3515d1025e"},{"id":"509d2775-41be-4ab3-94bc-d2ac80898ac7","output_hash":"56e3d2dddf5686070c1add05d5b3c14d71e67c00e22219b594a8c097c8e78196"}],"message":"Created a workflow snapshot containing 2 eligible receipts. To seal this, call workflow_seal with ","first_closed_at":"2026-10-18T10:14:34.691Z","free_view_expires_at":"2026-10-19T10:14:34.691Z","page_state":"free","disclosure":"This workflow page is fully visible until 2026-10-19T10:14:34.691Z. 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: 2026-10-20T11:36:07.654Z; 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
3f72a3c6-681d-58e7-af71-fc23eedf3c26
SHA-256 output hash
sha256:1002c8bef44d71af03869943c2306a57e8c7b1b246b2e2d08f4ee12793df4e40
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:e1d96711e6964fe95d078a28ad92501202497fed5a671ee0bedff48d7308da08
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
ff7e1f12d64a8ad65e69c063c5b71b1092aa659ca4a58753245a537e4cdd8abb
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":"2026-10-20T11:36:07.654Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:1002c8bef44d71af03869943c2306a57e8c7b1b246b2e2d08f4ee12793df4e40","receipt_uuid":"3f72a3c6-681d-58e7-af71-fc23eedf3c26","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/3f72a3c6-681d-58e7-af71-fc23eedf3c26/badge.svg)](https://zambo.dev/run/3f72a3c6-681d-58e7-af71-fc23eedf3c26?ref=badge)

HTML

<a href="https://zambo.dev/run/3f72a3c6-681d-58e7-af71-fc23eedf3c26?ref=badge"><img src="https://zambo.dev/api/receipt/3f72a3c6-681d-58e7-af71-fc23eedf3c26/badge.svg" alt="Verifiable Zambo receipt"></a>

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