Verifiable receipt 1eb5d783 - 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":"19d

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: 19d1b1b1-ad8e-4390-af0b-1a68c598cf9d source output hash: sha256:48e11f655b677ba44371a11ce35f430a8fd7d86a54443567de4ab1d7ecbf6e48 source tool: day_pass_checkout_link 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: {"status":"human_checkout_link_ready","charged":false,"price_usd":"0.99","duration_hours":24,"checkout_url":"https://zambo.dev/day-pass/?job=[private]","chat_checkout_url":"https://zambo.dev/day-pass/?chat_checkout=[private]&source=chat","expires_at":"2026-10-17T13:09:50.370Z","session_bound":true,"message":"Pay $0.99 by card or PayPal. Open this link and approve payment. Nothing has been charged.","next":"Open checkout_url to pay by card or PayPal, then check day_pass_status with the same _session_id or status_token."}

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: 2026-10-18T20:04:44.921Z; 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
1eb5d783-1b8f-540a-a185-227e0e4e4c0a
SHA-256 output hash
sha256:4129cdf9fd641537ae8560cad636a7d832ebf4a47ce53063117f0596e78424b7
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
sha256:57991980cba0e9ca1f0e35e4b90565b31cd9ba3dc7b2d70959ba62017b772533
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
93429c126d394c34c363f0f40286ff1caf3803cff196ae17beba5edae6c89613
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":"2026-10-18T20:04:44.921Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:4129cdf9fd641537ae8560cad636a7d832ebf4a47ce53063117f0596e78424b7","receipt_uuid":"1eb5d783-1b8f-540a-a185-227e0e4e4c0a","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.

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Markdown

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HTML

<a href="https://zambo.dev/run/1eb5d783-1b8f-540a-a185-227e0e4e4c0a?ref=badge"><img src="https://zambo.dev/api/receipt/1eb5d783-1b8f-540a-a185-227e0e4e4c0a/badge.svg" alt="Verifiable Zambo receipt"></a>

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