Verifiable receipt 894d8ab9 - 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":"bfa

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: bfa06bae-9e29-4e09-8497-bff406f397b8 source output hash: sha256:00e3c0e0cbabfa99c71123810dbf61e0985eb5162115c2f4262f52493a49f0e5 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":"784e80541ecd2372effaeb96e87e6d9870998683465b6cadc71ec6b12d2505e0","children":[{"id":"abe8253b-3fee-4efc-b692-7427394b90b5","output_hash":"5d3b50526385bbee6109b71a9c19a5aa3e0d0f7a36b08557d1a44f5b902c3edc"},{"id":"a0a345f3-476e-47ff-9c7e-12ccc349e0bb","output_hash":"a878499e870460a29ebfbc770e7acbf36e703246183c9e572b1caa3028846ad5"},{"id":"3311d4f9-c4ec-42fc-a24a-cf9ceabae8f4","output_hash":"965cc69766657f3ff6245366be59858a363d55567942a231f1c615d63c02a77f"}],"message":"Created a workflow snapshot containing 3 eligible receipts. To seal this, call workflow_seal with ","first_closed_at":"2026-10-16T08:22:06.119Z","free_view_expires_at":"2026-10-17T08:22:06.119Z","page_state":"free","disclosure":"This workflow page is fully visible until 2026-10-17T08:22:06.119Z. 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.

Check this receipt Run your own
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.

Keep the work moving

This receipt records a completed tool call. When the free allowance is not enough, choose the access path that fits the job.

UNLOCK 24H DAY PASS ($0.99) →

See all plans on the pricing page →

RUN YOUR OWN FREE CALL →

Or re-run this exact call, using the same tool and arguments.

Share this receipt

Share on X ·

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: 2026-10-18T18:58:58.936Z; 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

Want a verifiable receipt for every job your bots do?

Add Zambo Receipt Bot to your team · File this in Receipt Bot

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
894d8ab9-6085-5ad5-a37f-13858f1fdc25
SHA-256 output hash
sha256:5b02b3134331c3ad28fc8f4b6be4e1a6dabf4fb311222cd6a950a8b22b5edfe1
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:a72da8f9a58c2643efb0084884fcedbf0905fc5dd521e110eb9cfa7d6557bf99
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
803c1fc09ab2228def521b6ae067262022c7352d8e129acd91315aaa29811c77
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":"2026-10-18T18:58:58.936Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:5b02b3134331c3ad28fc8f4b6be4e1a6dabf4fb311222cd6a950a8b22b5edfe1","receipt_uuid":"894d8ab9-6085-5ad5-a37f-13858f1fdc25","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/894d8ab9-6085-5ad5-a37f-13858f1fdc25/badge.svg)](https://zambo.dev/run/894d8ab9-6085-5ad5-a37f-13858f1fdc25?ref=badge)

HTML

<a href="https://zambo.dev/run/894d8ab9-6085-5ad5-a37f-13858f1fdc25?ref=badge"><img src="https://zambo.dev/api/receipt/894d8ab9-6085-5ad5-a37f-13858f1fdc25/badge.svg" alt="Verifiable Zambo receipt"></a>

Open badge SVG

Recent receipts

51,147 verifiable receipts minted

RUN YOUR OWN FREE CALL →

Get your own: connect https://zambo.dev/mcp. Free daily calls, no API key.

Open the interactive receipt view