Verifiable receipt a2cea667 - 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":"9ad

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: 9ad1b8be-96eb-47d9-bdce-9495a3b15fec source output hash: sha256:56a865dbf285ffe3d0d5f45dfb6aa43a5a1a74b1f200a24981bb5cc7fd12309f 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":"ced71511-7478-48d8-a544-8754173733f5","url":"https://zambo.dev/handover/ced71511-7478-48d8-a544-8754173733f5","reused":false,"share_text":"Here's the handover for Shield-check and price lookup for Acme: https://zambo.dev/handover/ced71511-7478-48d8-a544-8754173733f5. Each listed step has a verifiable receipt you can check in your browser.","workflow_receipt_url":"https://zambo.dev/run/666cbfb4-f9c5-4cac-81ec-0dbcdc3c0ece","verify_url":"https://zambo.dev/api/v2/receipt/666cbfb4-f9c5-4cac-81ec-0dbcdc3c0ece/verify","steps":2,"ais":["unknown"],"not_checked":["accuracy of price source"],"shield":"pass","visibility":"public","redactions":0,"owner_url":"https://zambo.dev/handover/ced71511-7478-48d8-a544-8754173733f5","next":["Send the link to Acme","See it as your client will: https://zambo.dev/handover/ced71511-7478-48d8-a544-8754173733f5?preview=client","Make it private and branded with Zambo Pass: https://zambo.dev/upgrade?tier=monthly"]}

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.

Keep the work moving

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: 2026-10-19T17:02:14.856Z; 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

LOGGED BY AGENT

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

Receipt ID
a2cea667-a916-5a0d-a3e8-0537f00864c9
SHA-256 output hash
sha256:e8214ddf67f6d4e5c2094626debf6053e1a62daaa073ca31982b54b69136299a
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:db1d27d468d498cf6451d3bc307df724329f1462acc8a7477a9de716b594d866
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
5661172a5e8c21339742627bae5cd3ff936b6d77da4841c158a578d5353c3f63
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":"2026-10-19T17:02:14.856Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:e8214ddf67f6d4e5c2094626debf6053e1a62daaa073ca31982b54b69136299a","receipt_uuid":"a2cea667-a916-5a0d-a3e8-0537f00864c9","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/a2cea667-a916-5a0d-a3e8-0537f00864c9/badge.svg)](https://zambo.dev/run/a2cea667-a916-5a0d-a3e8-0537f00864c9?ref=badge)

HTML

<a href="https://zambo.dev/run/a2cea667-a916-5a0d-a3e8-0537f00864c9?ref=badge"><img src="https://zambo.dev/api/receipt/a2cea667-a916-5a0d-a3e8-0537f00864c9/badge.svg" alt="Verifiable Zambo receipt"></a>

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