Verifiable receipt 06fc73ad - 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":"975

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: 975149c9-4b2b-4302-82c1-374a18ebabcb source output hash: sha256:76ecfda8b265e84cf5e7eaf2487d2acf4590f89dc9250743f6beaeffba8568d6 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/?chat_checkout=[private]&source=chat","expires_at":"2026-10-15T23:00:01.529Z","session_bound":true,"message":"Pay $0.99 by card or PayPal. Open this link and approve payment. Nothing has been charged.","next":"Have the human open checkout_url, then poll day_pass_status with status_token until this workflow appears in seals[]."}

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: 2026-10-18T14:51:38.917Z; 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
06fc73ad-55c9-597f-a8e4-0e585f3fc7bc
SHA-256 output hash
sha256:f0cf4a337e89718eb93e18408a230a34fb57d128c12ba227fbbd68b7b9fcc5c7
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:cb0975a36b22b08ab4b9ff542af10b2266380adf0d2d7793cd0c42f8626a51ac
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
0cd2a26317a6473ef5fdf98550978ac7d46408e0c9a49fc5887988ed7a5f003a
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":"2026-10-18T14:51:38.917Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:f0cf4a337e89718eb93e18408a230a34fb57d128c12ba227fbbd68b7b9fcc5c7","receipt_uuid":"06fc73ad-55c9-597f-a8e4-0e585f3fc7bc","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.

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HTML

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