Verifiable receipt b7b76e37 - 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":"f8a

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: f8a76cfd-5f68-474c-a98b-b157f68bbd02 source output hash: sha256:adf0d58e7cad0a2da67fd10b6d01cd8f9abba91fbc3f7d5ad514e7f44c76a50e 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":"64677a80-4103-4ca8-badc-774a28b53f46","url":"https://zambo.dev/handover/64677a80-4103-4ca8-badc-774a28b53f46","reused":false,"agent_id":"agent-4320b837b629875a14eaafe0","agent_url":"https://zambo.dev/agent/agent-4320b837b629875a14eaafe0","badge_url":"https://zambo.dev/badge/agent-4320b837b629875a14eaafe0.svg","share_text":"Here's the handover for Series Client: Day entry 1: BTC price logged.. https://zambo.dev/handover/64677a80-4103-4ca8-badc-774a28b53f46 Each listed step has a verifiable receipt you can check in your browser.","workflow_receipt_url":"https://zambo.dev/run/902474fd-f6bc-425d-868d-749ca8640d46","verify_url":"https://zambo.dev/api/v2/receipt/902474fd-f6bc-425d-868d-749ca8640d46/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/64677a80-4103-4ca8-badc-774a28b53f46/acceptance.json","release_hint":"hold","ais":["Unspecified AI"],"not_checked":[],"shield":"pass","visibility":"public","redactions":0,"owner_url":"https://zambo.dev/handover/64677a80-4103-4ca8-badc-774a28b53f46"}

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: 2026-10-20T11:35:21.053Z; 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
b7b76e37-bc77-557e-aef3-82a18400a3ce
SHA-256 output hash
sha256:a8a1f8f9a54318c16eb938f34710291890416c7e5186a8465fe4af31c1b72c0f
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
sha256:9244a5d23594e7e6654a087b1ee5d01690a27eafef74dd8f835d02b1ec035e01
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
c6a9798f6319082a6e57720f9bb8d2eb00eadc4b5ff5113dd4d43bf5450f9767
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":"2026-10-20T11:35:21.053Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:a8a1f8f9a54318c16eb938f34710291890416c7e5186a8465fe4af31c1b72c0f","receipt_uuid":"b7b76e37-bc77-557e-aef3-82a18400a3ce","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/b7b76e37-bc77-557e-aef3-82a18400a3ce/badge.svg)](https://zambo.dev/run/b7b76e37-bc77-557e-aef3-82a18400a3ce?ref=badge)

HTML

<a href="https://zambo.dev/run/b7b76e37-bc77-557e-aef3-82a18400a3ce?ref=badge"><img src="https://zambo.dev/api/receipt/b7b76e37-bc77-557e-aef3-82a18400a3ce/badge.svg" alt="Verifiable Zambo receipt"></a>

Open badge SVG

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