Public work receipt · checkable record
Secondary receipt · saved and checkable
This result could not be confirmed unchanged yet.
Sent using Zambo
Saved:
What ran: secondary_receipt
Zambo is the verifiable work layer for AI.
Observed result
receipt type: secondary id: b85f3db9-9840-445a-8876-7e15544f0859 hash algorithm: sha256 canonical bytes: eyJ0ZXh0IjoiQXVkaXRlZCB6YW1iby5kZXYvZG9jcy9zZWNvbmRhcnktcmVjZWlwdHMgYWdhaW5zdCB0aGUgbGl2ZSBBUEkgb24gMjAyNi0wOS0xOCJ9 canonical byte length: 87 output hash: sha256:5140eea270e4ff97f1bcf7c0682a76020325eed11f9e3f8c3e1a012e52cf1c15 submitted at: 2026-09-18T07:52:01.162Z submitter: anonymous source url: https://zambo.dev/docs/secondary-receipts evidence breakdown 1 / type: web_link evidence breakdown 1 / tier: weak evidence breakdown 1 / description: Docs page checked live evidence breakdown 1 / check: unverifiable evidence breakdown 1 / claim: Docs page checked live score: 0 scoring function: v1 audit url: https://zambo.dev/receipts/b85f3db9-9840-445a-8876-7e15544f0859 disclaimer: Zambo did not witness the original work. This receipt records evidence submitted at submitted_at and the results of the checks described. claimed_completed_at is submitter-asserted, not verified.
This is the saved result preview, not proof that the answer was correct.
Check this receipt
This page shows the result and when it was saved. Use the receipt checker to see whether the saved result has changed.
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 an execution receipt?
An execution receipt is a public record of a reported AI agent tool call. Its byte commitment and provenance claim can be checked independently; neither alone authenticates the issuer. Read the canonical definition of an AI agent execution receipt.
What the receipt can and cannot prove
What is this?
Zambo's receipt store reports a tool call and records its result. The SHA-256 commitment covers the exact canonical bytes. The provenance label is bound to v0.4 receipt bytes when that check passes, but no pinned signature or trusted issuer key is checked. An anchor can timestamp a fingerprint; it does not authenticate the issuer.
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.
Or re-run this exact call, using the same tool and arguments.
Share this receipt
Show technical verification checks
Verification checks
- SHA-256 commitment: Checked independently against the exact decoded bytes
- Provenance binding: FAIL; The receipt schema version is missing or unsupported; provenance binding was not accepted.
- Metadata binding: LEGACY; legacy receipt, metadata is not cryptographically bound
- 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: 2026-09-18T07:52:01.264Z; external immutability is not checked
Get proof like this from your own 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
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Add Zambo Receipt Bot to your team · File this in Receipt Bot
Show receipt data and verification evidence
Committed provenance claim
EXECUTED BY ZAMBO
The receipt schema version is missing or unsupported; provenance binding was not accepted.
- Receipt ID
fbed6c91-d796-40f5-adc6-86d6d10ce16f- SHA-256 output hash
sha256:d284a64ba2e303cea06adff5563249a0e6f525d402d34399d3cbe925a2cb30c1- Canonical bytes
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- Timestamp
Bound call context
- Receipt schema
0.2- v0.2 receipt; call-context metadata was not recorded.
Bound upstream evidence
- Status
- no_upstream_bytes_captured
- Evidence SHA-256
unavailable- Byte length
- unavailable
Neutral Nostr anchor
- Event ID
e23cba2367e144c9cb84132ee0b0d3862d5dfd6bc02fe1b6ce8c0d12c6a7a31d- Anchor status
- published
- Public key
e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41
Relay hints: wss://relay.primal.net
Anchor status "published": Published to all configured relay targets.
Relay publication is separate from receipt integrity. When the original signed event is available, Zambo retries pending, partial, or failed anchors about once a minute. Relay acknowledgements are external, so there is no guaranteed completion time; the receipt remains checkable from its saved bytes and verification link.
Check this hash yourself
Receipt commitment: legacy_receipt. 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
[](https://zambo.dev/run/fbed6c91-d796-40f5-adc6-86d6d10ce16f?ref=badge)
HTML
<a href="https://zambo.dev/run/fbed6c91-d796-40f5-adc6-86d6d10ce16f?ref=badge"><img src="https://zambo.dev/api/receipt/fbed6c91-d796-40f5-adc6-86d6d10ce16f/badge.svg" alt="Verifiable Zambo receipt"></a>
Secondary receipt
- Score
- 0/10 (v1)
- Submitted at
- Claimed completed at
- Not provided. Never independently verified.
Zambo did not witness the original work. This receipt records evidence submitted at submitted_at and the results of the checks described. claimed_completed_at is submitter-asserted, not verified.
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