Verifiable receipt 1ef096d6 - 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":"f2f

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: f2fe2ff5-a93f-4cf6-b61b-81c247964c2c source output hash: sha256:81d532ca860d47e687aea59ee11995fe61d5e12843073c77f4cd44b894f74fdc 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":"61a9cc10-fb4b-4631-ab0f-21a8855be5ef","url":"https://zambo.dev/handover/61a9cc10-fb4b-4631-ab0f-21a8855be5ef","reused":false,"agent_id":"agent-0ec92f70a3bd35d3d707d5f8","agent_url":"https://zambo.dev/agent/agent-0ec92f70a3bd35d3d707d5f8","badge_url":"https://zambo.dev/badge/agent-0ec92f70a3bd35d3d707d5f8.svg","share_text":"Here's the handover for C: t. https://zambo.dev/handover/61a9cc10-fb4b-4631-ab0f-21a8855be5ef Each listed step has a verifiable receipt you can check in your browser.","workflow_receipt_url":"https://zambo.dev/run/c08c7ce8-9e19-42eb-96cd-1d0c3d1c8cab","verify_url":"https://zambo.dev/api/v2/receipt/c08c7ce8-9e19-42eb-96cd-1d0c3d1c8cab/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/61a9cc10-fb4b-4631-ab0f-21a8855be5ef/acceptance.json","release_hint":"hold","ais":["Unspecified AI"],"not_checked":[],"shield":"pass","visibility":"public","redactions":0,"owner_url":"https://zambo.dev/handover/61a9cc10-fb4b-4631-ab0f-21a8855be5ef"}

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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This receipt records a completed tool call. When the free allowance is not enough, choose the access path that fits the job.

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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: 2026-10-20T04:13:31.776Z; 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
1ef096d6-e27d-5c09-a5c5-085048fdc3bd
SHA-256 output hash
sha256:6ec27249777b0d72934174d76d60fcd652d1c3c963387b29e8b7f91f320827b2
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:afbe2289e13e31969d12ed6114a8f682f33fd9fe66e94c86041e82c449a521d0
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
3a4ddf1b492f4546636338b8beac9c82de8d5e2405a6d2be8f057ff6f110270d
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":"2026-10-20T04:13:31.776Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:6ec27249777b0d72934174d76d60fcd652d1c3c963387b29e8b7f91f320827b2","receipt_uuid":"1ef096d6-e27d-5c09-a5c5-085048fdc3bd","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/1ef096d6-e27d-5c09-a5c5-085048fdc3bd/badge.svg)](https://zambo.dev/run/1ef096d6-e27d-5c09-a5c5-085048fdc3bd?ref=badge)

HTML

<a href="https://zambo.dev/run/1ef096d6-e27d-5c09-a5c5-085048fdc3bd?ref=badge"><img src="https://zambo.dev/api/receipt/1ef096d6-e27d-5c09-a5c5-085048fdc3bd/badge.svg" alt="Verifiable Zambo receipt"></a>

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