Verifiable receipt 306b778d - 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":"ab0

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: ab0b3712-e764-4260-a0e4-d22c593ffa74 source output hash: sha256:eda0c56f88959e829131a4b503dedcbd614f88f8fe9a95de813d083beda820fb 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":"48479a33-d996-4419-a9c8-d1b9a55e62b9","url":"https://zambo.dev/handover/48479a33-d996-4419-a9c8-d1b9a55e62b9","reused":false,"agent_id":"agent-41aaba15ebb4a24250ffffc7","agent_url":"https://zambo.dev/agent/agent-41aaba15ebb4a24250ffffc7","badge_url":"https://zambo.dev/badge/agent-41aaba15ebb4a24250ffffc7.svg","share_text":"Here's the handover for Delta Sources Client: V5 final delta: sources rollup verification. https://zambo.dev/handover/48479a33-d996-4419-a9c8-d1b9a55e62b9 Each listed step has a verifiable receipt you can check in your browser.","workflow_receipt_url":"https://zambo.dev/run/9d9e5d13-299c-415a-82a3-459fce0c2769","verify_url":"https://zambo.dev/api/v2/receipt/9d9e5d13-299c-415a-82a3-459fce0c2769/verify","steps":2,"ai_use_statement":"AI use: v5-delta helped with 2 of 2 steps. See the listed receipts.","sources":{"resolved":0,"not_resolved":0,"not_checked":3},"warnings":[],"acceptance_url":"https://zambo.dev/handover/48479a33-d996-4419-a9c8-d1b9a55e62b9/acceptance.json","release_hint":"hold","ais":["v5-delta"],"not_checked":[],"shield":"pass","visibility":"public","redactions":0,"owner_url":"https://zambo.dev/handover/48479a33-d996-4419-a9c8-d1b9a55e62b9"}

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: 2026-10-18T17:32:51.966Z; 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"}}}

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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
306b778d-3842-5232-a0bf-0cbfbe4e028e
SHA-256 output hash
sha256:d0da9850dd8492e104fc843c6da7a562085016eb211f6af7b6bdf58b746389ea
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:e30794f130ca1c30025f3f6b452fa9f180539ca58ba3a3d6aa69bae48ac1ef54
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
341a343b25d7f2304bf82c792158b5b97266d90590750acd313a36285d275636
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":"2026-10-18T17:32:51.966Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:d0da9850dd8492e104fc843c6da7a562085016eb211f6af7b6bdf58b746389ea","receipt_uuid":"306b778d-3842-5232-a0bf-0cbfbe4e028e","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/306b778d-3842-5232-a0bf-0cbfbe4e028e/badge.svg)](https://zambo.dev/run/306b778d-3842-5232-a0bf-0cbfbe4e028e?ref=badge)

HTML

<a href="https://zambo.dev/run/306b778d-3842-5232-a0bf-0cbfbe4e028e?ref=badge"><img src="https://zambo.dev/api/receipt/306b778d-3842-5232-a0bf-0cbfbe4e028e/badge.svg" alt="Verifiable Zambo receipt"></a>

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