Verifiable receipt bcd78c39 - 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":"80a

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: 80a43c82-b997-4347-9611-9767a030e874 source output hash: sha256:766fce429a3d089b8469979ae18a97947c21554feb92e7032a02305c4d646178 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":"c92aa3c0-a56f-4204-a6c1-8a98e8465c93","url":"https://zambo.dev/handover/c92aa3c0-a56f-4204-a6c1-8a98e8465c93","reused":false,"agent_id":"agent-72a4b5a49b3a53cc33041cfb","agent_url":"https://zambo.dev/agent/agent-72a4b5a49b3a53cc33041cfb","badge_url":"https://zambo.dev/badge/agent-72a4b5a49b3a53cc33041cfb.svg","share_text":"Here's the handover for Test Client: test. https://zambo.dev/handover/c92aa3c0-a56f-4204-a6c1-8a98e8465c93 Each listed step has a verifiable receipt you can check in your browser.","workflow_receipt_url":"https://zambo.dev/run/a6260ce1-75a2-4179-9d73-78b2493a87a8","verify_url":"https://zambo.dev/api/v2/receipt/a6260ce1-75a2-4179-9d73-78b2493a87a8/verify","steps":2,"ai_use_statement":"AI use: Unspecified AI helped with 2 of 2 steps. See the listed receipts.","sources":{"resolved":0,"not_resolved":0,"not_checked":0},"warnings":[],"acceptance_url":"https://zambo.dev/handover/c92aa3c0-a56f-4204-a6c1-8a98e8465c93/acceptance.json","release_hint":"hold","ais":["Unspecified AI"],"not_checked":["quality of answer"],"shield":"pass","visibility":"public","redactions":0,"owner_url":"https://zambo.dev/handover/c92aa3c0-a56f-4204-a6c1-8a98e8465c93"}

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: 2026-10-19T21:33:06.614Z; external immutability is not checked

Get proof like this from your own AI

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
bcd78c39-3fac-5886-a834-27fc46c98375
SHA-256 output hash
sha256:ab2d7a10a13bba77bfdde390b167347c86e482b8f3891014bc1d14fc01192253
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:d75427a72fe040eb16e14780b26ee7ded24b6d2fd9fc78f0384f740760676241
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
6082cb9677b1c80e641299f541a91cdd82f61bfa94b87e960e18902a8e2fd083
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":"2026-10-19T21:33:06.614Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:ab2d7a10a13bba77bfdde390b167347c86e482b8f3891014bc1d14fc01192253","receipt_uuid":"bcd78c39-3fac-5886-a834-27fc46c98375","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/bcd78c39-3fac-5886-a834-27fc46c98375/badge.svg)](https://zambo.dev/run/bcd78c39-3fac-5886-a834-27fc46c98375?ref=badge)

HTML

<a href="https://zambo.dev/run/bcd78c39-3fac-5886-a834-27fc46c98375?ref=badge"><img src="https://zambo.dev/api/receipt/bcd78c39-3fac-5886-a834-27fc46c98375/badge.svg" alt="Verifiable Zambo receipt"></a>

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