Verifiable receipt 94fdb6bc - 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":"cc9

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: cc9bd5d8-a2cd-4365-a307-65499df7adf5 source output hash: sha256:f44b191efff346f090e8dd5c3b7aa37e8ae267c9632f49251563a3e171c9bbad source tool: workflow_close 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: {"count":3,"merkle_root":"20cd05c44ebbfd9f7fe4f5ac91f0be5d450d2ec0e0bdcd298c3fde62f1e826c5","children":[{"id":"f2f45cca-b5b9-4198-977e-2eab817a74c0","output_hash":"f226d52d424782f2a4d55e4602cf67342a258547f3abb5f58b204c4b6018f9ad"},{"id":"99896c3d-3b5a-4f1e-85eb-8c6010cb9a03","output_hash":"00529c12768125000e01691346529ed8258904dd9c454086ed7b2f4df6916c3a"},{"id":"dde99ceb-a070-4530-a1d1-937a70259ee4","output_hash":"23050ed5ef92dd91e9fdec8b6ffcaa54b77395f1543bab624463ba1c824a0797"}],"message":"Created a workflow snapshot containing 3 eligible receipts. To seal this, call workflow_seal with ","first_closed_at":"2026-10-16T11:29:30.104Z","free_view_expires_at":"2026-10-17T11:29:30.104Z","page_state":"free","disclosure":"This workflow page is fully visible until 2026-10-17T11:29:30.104Z. Seal it to keep it, add your branding, and get the PDF pack. Individual receipts stay available either way.","disclosure_note":"Expiry is currently disabled, so no workflow page is expiring right now.","verification_status":"not_verified","issuer_authenticated":false}

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: 2026-10-18T16:19:43.794Z; 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
94fdb6bc-a66f-594a-a763-340e4a424124
SHA-256 output hash
sha256:0484e6910e8ddeafe1ceb17bc2a999a7e81026335817edbfa575fc30d6c508a0
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:ff9d83f681a84b4d2469b5704f49d52cf8efd9a36d395c140fca59be9e57bf57
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
1bccb9cf628d59c59ea5834de317080ad6da50dfa48d138a9ea2b0625655161c
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":"2026-10-18T16:19:43.794Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:0484e6910e8ddeafe1ceb17bc2a999a7e81026335817edbfa575fc30d6c508a0","receipt_uuid":"94fdb6bc-a66f-594a-a763-340e4a424124","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/94fdb6bc-a66f-594a-a763-340e4a424124/badge.svg)](https://zambo.dev/run/94fdb6bc-a66f-594a-a763-340e4a424124?ref=badge)

HTML

<a href="https://zambo.dev/run/94fdb6bc-a66f-594a-a763-340e4a424124?ref=badge"><img src="https://zambo.dev/api/receipt/94fdb6bc-a66f-594a-a763-340e4a424124/badge.svg" alt="Verifiable Zambo receipt"></a>

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