Verifiable receipt 0819d66e - 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":"acc

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: acc0ee8e-a0d6-4724-8001-a31c1d155be6 source output hash: sha256:dc6920fa27d8913893c403fb6cb3942ec8836cddf34c52472c258821b39b3f70 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":"45434a17-4afc-486a-9646-e689bcee4297","url":"https://zambo.dev/handover/45434a17-4afc-486a-9646-e689bcee4297","reused":false,"share_text":"Here's the handover for Delivery of zambo_universal: https://zambo.dev/handover/45434a17-4afc-486a-9646-e689bcee4297. Each listed step has a verifiable receipt you can check in your browser.","workflow_receipt_url":"https://zambo.dev/run/da183db3-163f-4bc8-b7f4-0eb9c8e411f5","verify_url":"https://zambo.dev/api/v2/receipt/da183db3-163f-4bc8-b7f4-0eb9c8e411f5/verify","steps":4,"ais":["unknown"],"not_checked":[],"shield":"pass","visibility":"public","redactions":0,"owner_url":"https://zambo.dev/handover/45434a17-4afc-486a-9646-e689bcee4297","next":["Send the link to Acme","See it as your client will: https://zambo.dev/handover/45434a17-4afc-486a-9646-e689bcee4297?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.

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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: 2026-10-18T17:00:19.865Z; external immutability is not checked

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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
0819d66e-eccf-50e9-a877-654f0b349ddb
SHA-256 output hash
sha256:509946e1d5d85be1fbc5f1bd37b5ca9cfc014ed67ea87249e3067e606b760fa6
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
sha256:93bc67694ff61675cc5d39af1ae0d98133b4b440e99470186393bfe390e7dd84
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
ae2a9fdb21042949d636fd508ca44b8ac9f55798c9d951b6c14d1abcf8210883
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":"2026-10-18T17:00:19.865Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:509946e1d5d85be1fbc5f1bd37b5ca9cfc014ed67ea87249e3067e606b760fa6","receipt_uuid":"0819d66e-eccf-50e9-a877-654f0b349ddb","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/0819d66e-eccf-50e9-a877-654f0b349ddb/badge.svg)](https://zambo.dev/run/0819d66e-eccf-50e9-a877-654f0b349ddb?ref=badge)

HTML

<a href="https://zambo.dev/run/0819d66e-eccf-50e9-a877-654f0b349ddb?ref=badge"><img src="https://zambo.dev/api/receipt/0819d66e-eccf-50e9-a877-654f0b349ddb/badge.svg" alt="Verifiable Zambo receipt"></a>

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