Verifiable receipt fb121788 - 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":"425

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: 42561be3-724a-4a4e-942f-71bdb396667d source output hash: sha256:6201e207f4087c2073f6e2a971d8c611b14d12b5c16b8494c7058451d664df89 source tool: handover 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: {"handover_id":"6ff292fd-6fcf-41e5-a73d-2a2ebc7a1895","url":"https://zambo.dev/handover/6ff292fd-6fcf-41e5-a73d-2a2ebc7a1895","reused":false,"agent_id":"agent-22094326b2fe83384bb5ff07","agent_url":"https://zambo.dev/agent/agent-22094326b2fe83384bb5ff07","badge_url":"https://zambo.dev/badge/agent-22094326b2fe83384bb5ff07.svg","share_text":"Here's the handover for Deep Auditor lean RT: test handover, ignore. https://zambo.dev/handover/6ff292fd-6fcf-41e5-a73d-2a2ebc7a1895 Each listed step has a verifiable receipt you can check in your browser.","workflow_receipt_url":"https://zambo.dev/run/474f883c-4497-4230-b1bb-5aff94acd07c","verify_url":"https://zambo.dev/api/v2/receipt/474f883c-4497-4230-b1bb-5aff94acd07c/verify","steps":2,"ai_use_statement":"AI use: test-deep-auditor-2026-10-16 helped with 1 of 2 steps. Unspecified AI helped with 1 of 2 steps. See the listed receipts.","sources":{"resolved":0,"not_resolved":0,"not_checked":0},"warnings":[],"acceptance_url":"https://zambo.dev/handover/6ff292fd-6fcf-41e5-a73d-2a2ebc7a1895/acceptance.json","release_hint":"hold","ais":["test-deep-auditor-2026-10-16","Unspecified AI"],"not_checked":[],"shield":"pass","visibility":"public","redactions":0,"owner_url":"https://zambo.dev/handover/6ff292fd-6fcf-41e5-a73d-2a2ebc7a1895"}

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: 2026-10-19T00:42:11.476Z; 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"}}}

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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
fb121788-acf5-500f-a8b4-8edaf245700d
SHA-256 output hash
sha256:c4d43b1a6981783859ac43d9be6f99a2a0f74374e7700bcb8591bb7e80278c55
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:e69b88a3619e0664168c42a7fd5e85689df873707cc838cfb422dd6531a7b3c3
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
b68df614d342adb845224b4ab599c1e008d395c42a7249096c3a13e3ed05a7bf
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":"2026-10-19T00:42:11.476Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:c4d43b1a6981783859ac43d9be6f99a2a0f74374e7700bcb8591bb7e80278c55","receipt_uuid":"fb121788-acf5-500f-a8b4-8edaf245700d","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

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/fb121788-acf5-500f-a8b4-8edaf245700d/badge.svg)](https://zambo.dev/run/fb121788-acf5-500f-a8b4-8edaf245700d?ref=badge)

HTML

<a href="https://zambo.dev/run/fb121788-acf5-500f-a8b4-8edaf245700d?ref=badge"><img src="https://zambo.dev/api/receipt/fb121788-acf5-500f-a8b4-8edaf245700d/badge.svg" alt="Verifiable Zambo receipt"></a>

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