Public work receipt · checkable record

Receipt publication · saved and checkable

✓ This result hasn’t changed since it was saved.

Sent using Zambo

Saved:
What was asked: The request recorded for this receipt.

Zambo is the verifiable work layer for AI.

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: 1d9d84c6-1347-43c6-954d-5957a239c94f source output hash: sha256:8164f7c2ad34fa07104a406d7ef8338cc3edf8b7959e084dcab908b0f0cf78a6 source tool: day_pass_activate 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: {"success":true,"activated":true,"duplicate":false,"until":"2026-10-11T08:37:45.596Z","expires_at":"2026-10-11T08:37:45.596Z","account_email":"[REDACTED_EMAIL]","run_id":"d20a13f2-aad0-4d4b-8d57-45277c48ef12","uuid":"d20a13f2-aad0-4d4b-8d57-45277c48ef12","receipt_url":"https://zambo.dev/run/d20a13f2-aad0-4d4b-8d57-45277c48ef12","how_to_use":{"header":"X-Zambo-Key","value":"[private]","mcp":"https://zambo.dev/mcp","note":"Send on every MCP request until expires_at"},"payment":{"network":"eip155:8453","asset":"0x8335…2913","amount":"990000","payer":"0xb263…7665","pay_to":"0xb753…b9AC","transaction":"0x3415…c514"},"spend_receipt":{"asset":"0x8335…2913","chain":"eip155:8453","payTo":"0xb753…b9AC","expiry":"2026-10-11T08:37:45.596Z","auditUrl":"https://zambo.dev/api/x402/spend-receipt/x402_e671d0cd-9d6f-4426-bc99-fddbebcf1401/audit","resource":"https://zambo.dev/api/x402/day-pass","maxAmount":"990000","receiptId":"x402_e671d0cd-9d6f-4426-bc99-fddbebcf1401","activatedAt":"2026-10-10T08:37:45.604Z","receiptType":"x402_spend","settlementId":"0x3415…c514","signedPayloadHash":"sha256:85e991d45f489897c0a55959b4a77ad7598886da06fc5f35ee4ab77381d0a3bc","activationWindowSeconds":86400,"signedPayloadHashAlgorithm":"sha256:canonical-json(payment.payload)","runReceiptUrl":"https://zambo.dev/run/d20a13f2-aad0-4d4b-8d57-45277c48ef12"}}

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: 2026-11-06T17:35:07.560Z; 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"}}}

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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
8810623a-cedb-5e26-a0bc-e372da74432f
SHA-256 output hash
sha256:1bab3976ff89fd347b986b80d350b7d895bf1e09f9de7912c5e7791fb3a70320
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
sha256:6f21e0e4dc7b7735c5e182ceb41ceab2d62866f1ef3e929dd7ca8e4995498f2a
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
empty
Evidence SHA-256
unavailable
Byte length
unavailable

Neutral Nostr anchor

Event ID
a35db7858e25d8e780f3105e530193619baf21ad3e91340b6ca103702af2ef35
Anchor status
failed
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":"2026-11-06T17:35:07.560Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:1bab3976ff89fd347b986b80d350b7d895bf1e09f9de7912c5e7791fb3a70320","receipt_uuid":"8810623a-cedb-5e26-a0bc-e372da74432f","schema_version":"zambo-receipt-anchor/1"}

Anchor status "failed": Publication was not confirmed by any configured relay target.

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/8810623a-cedb-5e26-a0bc-e372da74432f/badge.svg)](https://zambo.dev/run/8810623a-cedb-5e26-a0bc-e372da74432f?ref=badge)

HTML

<a href="https://zambo.dev/run/8810623a-cedb-5e26-a0bc-e372da74432f?ref=badge"><img src="https://zambo.dev/api/receipt/8810623a-cedb-5e26-a0bc-e372da74432f/badge.svg" alt="Verifiable Zambo receipt"></a>

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