Verifiable receipt 72d014f2 - 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":"c1b

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: c1b1290c-9424-41b0-b330-59d2cc9524a0 source output hash: sha256:f5e605325c949b0dd9435647f56f9070bd1519c91fb1b55039547a79196b20b7 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":"081be6cf-80c6-4660-bccd-46b245da9c42","url":"https://zambo.dev/handover/081be6cf-80c6-4660-bccd-46b245da9c42","reused":false,"agent_id":"agent-a7918481a430ebddc798a841","agent_url":"https://zambo.dev/agent/agent-a7918481a430ebddc798a841","badge_url":"https://zambo.dev/badge/agent-a7918481a430ebddc798a841.svg","share_text":"Here's the handover for Audit Client: Delta-3 propagation retest.. https://zambo.dev/handover/081be6cf-80c6-4660-bccd-46b245da9c42 Each listed step has a verifiable receipt you can check in your browser.","workflow_receipt_url":"https://zambo.dev/run/29ceafb7-7d7f-486f-85d3-4c84bccf3578","verify_url":"https://zambo.dev/api/v2/receipt/29ceafb7-7d7f-486f-85d3-4c84bccf3578/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/081be6cf-80c6-4660-bccd-46b245da9c42/acceptance.json","release_hint":"hold","ais":["Unspecified AI"],"not_checked":["The supplied work was saved, not independently executed or checked."],"shield":"pass","visibility":"public","redactions":0,"owner_url":"https://zambo.dev/handover/081be6cf-80c6-4660-bccd-46b245da9c42"}

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: 2026-10-19T07:27:01.874Z; 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"}}}

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
72d014f2-f3d5-593f-a3c1-f76c98e240cb
SHA-256 output hash
sha256:caad6283b07d78f02cc22be343a5a6cc9723354b852a2f4bae1cf9e63cf830c4
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:bda03434329ca89a960fe44fd23656d45a82f8bcbdc26d2c1b853fe06fa91981
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
401ca9d6f04c64e0ce7204f2033c2f370823f3b1155579ed773671eac50629f2
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":"2026-10-19T07:27:01.874Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:caad6283b07d78f02cc22be343a5a6cc9723354b852a2f4bae1cf9e63cf830c4","receipt_uuid":"72d014f2-f3d5-593f-a3c1-f76c98e240cb","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/72d014f2-f3d5-593f-a3c1-f76c98e240cb/badge.svg)](https://zambo.dev/run/72d014f2-f3d5-593f-a3c1-f76c98e240cb?ref=badge)

HTML

<a href="https://zambo.dev/run/72d014f2-f3d5-593f-a3c1-f76c98e240cb?ref=badge"><img src="https://zambo.dev/api/receipt/72d014f2-f3d5-593f-a3c1-f76c98e240cb/badge.svg" alt="Verifiable Zambo receipt"></a>

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