Verifiable receipt 01ef059b - handover 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 handover call on Zambo: {"handover_id":"f9eddd86-1221-4807-a32c-29dbfc611498","url":"https://zambo.dev/handover/f9eddd86-1221-4807-a32c

Observed result

handover id: f9eddd86-1221-4807-a32c-29dbfc611498 url: https://zambo.dev/handover/f9eddd86-1221-4807-a32c-29dbfc611498 reused: false agent id: agent-983890a1d353f45aaa0beb38 workflow id: 5db66254-680c-4bed-80b3-ebf0c93fb76c agent url: https://zambo.dev/agent/agent-983890a1d353f45aaa0beb38 badge url: https://zambo.dev/badge/agent-983890a1d353f45aaa0beb38.svg share text: Here's the handover for qa-client: Checking no ref=limit upsell shows while free calls remain.. https://zambo.dev/handover/f9eddd86-1221-4807-a32c-29dbfc611498 Each listed step has a verifiable receipt you can check in your browser. workflow receipt url: https://zambo.dev/run/16ec7d56-5411-4069-a251-257b8460189b verify url: https://zambo.dev/api/v2/receipt/16ec7d56-5411-4069-a251-257b8460189b/verify steps: 2 ai use statement: AI use: verify-agent helped with 2 of 2 steps. See the listed receipts. sources / resolved: 0 sources / not resolved: 0 sources / not checked: 0 acceptance url: https://zambo.dev/handover/f9eddd86-1221-4807-a32c-29dbfc611498/acceptance.json release hint: hold ais 1: verify-agent not checked 1: The supplied work was saved, not independently executed or checked. shield: pass visibility: public redactions: 0 owner url: https://zambo.dev/handover/f9eddd86-1221-4807-a32c-29dbfc611498 seal next: Keep workflow_manage_token private. With an active pass, call workflow_seal with workflow_id, workflow_manage_token and the same _session_id used for this handover. Sealing, including the dispute pack, requires a pass.

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 an execution receipt?

An execution receipt is a public record of a reported AI agent tool call. Its byte commitment and provenance claim can be checked independently; neither alone authenticates the issuer. Read the canonical definition of an AI agent execution receipt.

What the receipt can and cannot prove

What is this?

Zambo's receipt store reports a tool call and records its result. The SHA-256 commitment covers the exact canonical bytes. The provenance label is bound to v0.4 receipt bytes when that check passes, but no pinned signature or trusted issuer key is checked. An anchor can timestamp a fingerprint; it does not authenticate the issuer.

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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: 2026-10-18T14:05:45.141Z; 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"}}}

Nothing is installed automatically. Full setup guides

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Show receipt data and verification evidence

Committed provenance claim

EXECUTED BY ZAMBO

The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.

Receipt ID
01ef059b-8478-4707-b674-b521b03f8e9b
SHA-256 output hash
sha256:94f2aef33597e295a1847e9cf35828b4025d8db2b2f553cc01b98a5fc5446d22
Canonical bytes
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
Timestamp

Bound call context

Receipt schema
0.4
Tool name
handover
Tool version
4.0.0
Permission scope
public
Caller type
anonymous
Caller ID
sha256:5b84978f4c269d7a1b21e6cb4d9c8f6a6d7f9daf0143a521fd28d0f763da0906
Caller basis
ip_ua_30d
Caller rotates at
2026-11-03T00:00:00.000Z
Caller-reported label
verify-agent (caller_reported, not authenticated team ownership)
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
captured
Evidence SHA-256
sha256:c33a2f30fc2f7eb1d617296d486737bb08cf40fb72afd82296b3a92213071f3b
Byte length
746

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID
e47adee077c6e6b45c2993ace0de314b59d3d939ba5549e582f845937148a637
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":"2026-10-18T14:05:45.141Z","evidence_byte_length":746,"evidence_sha256":"sha256:c33a2f30fc2f7eb1d617296d486737bb08cf40fb72afd82296b3a92213071f3b","evidence_url":"https://zambo.dev/api/evidence/c33a2f30fc2f7eb1d617296d486737bb08cf40fb72afd82296b3a92213071f3b","output_sha256":"sha256:94f2aef33597e295a1847e9cf35828b4025d8db2b2f553cc01b98a5fc5446d22","receipt_uuid":"01ef059b-8478-4707-b674-b521b03f8e9b","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/01ef059b-8478-4707-b674-b521b03f8e9b/badge.svg)](https://zambo.dev/run/01ef059b-8478-4707-b674-b521b03f8e9b?ref=badge)

HTML

<a href="https://zambo.dev/run/01ef059b-8478-4707-b674-b521b03f8e9b?ref=badge"><img src="https://zambo.dev/api/receipt/01ef059b-8478-4707-b674-b521b03f8e9b/badge.svg" alt="Verifiable Zambo receipt"></a>

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