Verifiable receipt 7abcfc39 - 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":"cd2

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: cd290c03-137b-4b26-82da-3f5c05b941fc source output hash: sha256:9770e68facbd81018c983ab0b5d08905cf4c6545ee0170c3ac931fe2c702fedd 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":2,"merkle_root":"d82f8c6ed3c33def280e52cb49d9a212fc58621c6338784074e4571223bf4313","children":[{"id":"6d90b8d1-858e-4746-b6da-c8498607eec8","output_hash":"ccfe2eba81d58ac5d3fa8501438e05fec4435447102daa2db30c38930005bbc4"},{"id":"562192cf-3a35-42df-a69c-4ec15a238708","output_hash":"6130ba27b74094dae08f099b812a875d13ea7f87ea8c9f9461388541ff707e6a"}],"message":"Created a workflow snapshot containing 2 eligible receipts. To seal this, call workflow_seal with ","first_closed_at":"2026-10-18T00:21:12.496Z","free_view_expires_at":"2026-10-19T00:21:12.496Z","page_state":"free","disclosure":"This workflow page is fully visible until 2026-10-19T00:21:12.496Z. 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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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: 2026-10-18T13:58:04.073Z; 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
7abcfc39-0e3e-558f-ac37-73bab27962a8
SHA-256 output hash
sha256:ac7a52c2905762abe2780d4e5b37975bdfcf798d73e7c10890232d444a009a9c
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:e55ccc29face2ff2e7419b6074e850cf741caa688aab838fd1d3b0b40d03b607
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
44f2881c47fd9d41ddb53d05dbad139b70b298ee711990013b30c60842a82bf1
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":"2026-10-18T13:58:04.073Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:ac7a52c2905762abe2780d4e5b37975bdfcf798d73e7c10890232d444a009a9c","receipt_uuid":"7abcfc39-0e3e-558f-ac37-73bab27962a8","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/7abcfc39-0e3e-558f-ac37-73bab27962a8/badge.svg)](https://zambo.dev/run/7abcfc39-0e3e-558f-ac37-73bab27962a8?ref=badge)

HTML

<a href="https://zambo.dev/run/7abcfc39-0e3e-558f-ac37-73bab27962a8?ref=badge"><img src="https://zambo.dev/api/receipt/7abcfc39-0e3e-558f-ac37-73bab27962a8/badge.svg" alt="Verifiable Zambo receipt"></a>

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