Public work receipt · checkable record

Zambo check · saved and checkable

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

Sent using Zambo

Saved: 2026-11-02T13:01:29.035Z
What was asked: The request recorded for this receipt.

Zambo is the verifiable work layer for AI.

Observed result

status: uncertain confidence: medium reason: The operation is claimed or observed, not independently verified. evidence 1 / id: http_3bed0d1aff8f evidence 1 / kind: http_observation evidence 1 / source: https://zambo.dev/ evidence 1 / observed: Public endpoint responded with HTTP 200. evidence 1 / scope: reachability, response metadata, page title/description, and content hash evidence 1 / fetched at: 2026-11-02T13:01:28.555Z evidence 1 / http status: 200 evidence 1 / content type: text/html; charset=utf-8 evidence 1 / sha256: a8ed39c462c0e8f9ddbecc436c7ccc3c4ad9798bc362d69ac04c79985a0a10ab evidence 2 / id: observed_51fc1ef61f3f evidence 2 / kind: execution_receipt evidence 2 / observed: The supplied context indicates the operation was observed, but does not establish independent verification. evidence 2 / scope: host-reported execution state assertion state / claimed: false assertion state / observed: true assertion state / verified: false assertion state / scope: not independently verified freshness / checked at: 2026-11-02T13:01:28.863Z freshness / source count: 1 freshness / newest source at: 2026-11-02T13:01:28.555Z risk / level: high risk / side effects: true risk / reversible: [private] risk / approval required: true risk / reasons 1: The request concerns an external action or execution; Zambo does not authorize it from a natural-language request alone. provenance / method: deterministic observations plus caller-supplied context provenance / sources 1: https://zambo.dev/ provenance / limitations 1: A reachable source is not proof that its claims are true. provenance / limitations 2: Caller-supplied claimed/verified fields are not independently authenticated. recommended action: verify_more next action: verify proof / type: integrity_hash proof / hash: 0fd52873ac776089158c4c715bda86c5c0d491c862dcdf04a17d0d2dca6e6a60 proof / recorded at: 2026-11-02T13:01:28.863Z proof / scope: integrity of this check response and its observed evidence; not a universal truth certificate proof / independently verifiable: false proof / note: This hash is not a persisted proof certificate. Use the dedicated proof capability only when a durable certificate is explicitly requested.

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 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.

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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: 2026-11-02T13:01:29.035Z; 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

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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 metadata claim is consistent with the verified receipt bytes; issuer is not authenticated.

Receipt ID: 3d8f4b1f-bcb4-4303-815d-8b95ee73a941
SHA-256 output hash: sha256:9cc1841f85c1a66e2980525430ef8416b7ed697df29872c57f96682aad6c86e3
Canonical bytes: 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
Timestamp: 2026-11-02T13:01:29.035Z

Bound call context

Receipt schema: 0.4
Tool name: zambo_check
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:8eed05e51f4a965c9730fbfdae8c928523902dfb1c317652c0bc21022a8ca326
Caller basis: ip_ua_30d
Caller rotates at: 2026-11-03T00:00:00.000Z
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: ok
Evidence SHA-256: sha256:e29c38d687ebf826d7e3fdb031af0db19d06e5230a1e07da1c34fbd2f714a129
Byte length: 2261

Fetch exact evidence bytes

Upstream provenance

This receipt is independently auditable against the named upstream source. This is not a mathematical correctness claim.

Source: · queried at: · raw response hash:

Neutral Nostr anchor

Event ID: 77810780ca7f8c1ae19b13938144de9ff354ee96adedc7d1772f5f97cf3d8abf
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":"2026-11-02T13:01:29.035Z","evidence_byte_length":2261,"evidence_sha256":"sha256:e29c38d687ebf826d7e3fdb031af0db19d06e5230a1e07da1c34fbd2f714a129","evidence_url":"https://zambo.dev/api/evidence/e29c38d687ebf826d7e3fdb031af0db19d06e5230a1e07da1c34fbd2f714a129","output_sha256":"sha256:9cc1841f85c1a66e2980525430ef8416b7ed697df29872c57f96682aad6c86e3","receipt_uuid":"3d8f4b1f-bcb4-4303-815d-8b95ee73a941","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/3d8f4b1f-bcb4-4303-815d-8b95ee73a941/badge.svg)](https://zambo.dev/run/3d8f4b1f-bcb4-4303-815d-8b95ee73a941?ref=badge)

HTML

<a href="https://zambo.dev/run/3d8f4b1f-bcb4-4303-815d-8b95ee73a941?ref=badge"><img src="https://zambo.dev/api/receipt/3d8f4b1f-bcb4-4303-815d-8b95ee73a941/badge.svg" alt="Verifiable Zambo receipt"></a>

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