Verifiable receipt 13ad4175 - weather result | Zambo

Verifiable receipt for a weather call on Zambo: {"city":"Weehawken, United States of America","current":{"condition":"Overcast ","temperature":"16°C (feels 13°C

Observed result

{"city":"Weehawken, United States of America","current":{"condition":"Overcast ","temperature":"16°C (feels 13°C)","humidity":"46%","wind":"9 km/h","uv_index":"0"},"forecast_3day":[{"date":"2026-10-10","high":"21°C","low":"15°C","description":"Overcast "},{"date":"2026-10-11","high":"18°C","low":"16°C","description":"Light drizzle"},{"date":"2026-10-12","high":"24°C","low":"14°C","description":"Sunny"}],"summary":"Overcast . 16°C (feels 13°C). Humidity 46%. Wind 9 km/h. UV index 0.","provider":"wttr.in","data_status":"live"}

Check this receipt

This record shows the result and timestamp stored for the call. Recompute the SHA-256 commitment from the saved bytes in your browser; signatures and chain proofs are not checked.

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?

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.

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.

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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.
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: 2026-10-10T11:14:29.353Z; external immutability is not checked

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Committed provenance claim

EXECUTED BY ZAMBO

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

Receipt ID: 13ad4175-b94f-4be3-bc65-831dab18fa92
SHA-256 output hash: sha256:df3c8dc1fa4e8fcd61ea61ade72a855622ac46b7ea6583e3271b8e0007d5d9e1
Canonical bytes: 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
Timestamp: 2026-10-10T11:14:29.353Z

Bound call context

Receipt schema: 0.4
Tool name: weather
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:3c7b4e9b38c8a155af68077d813cd96b00bd1c4293528a8b03173c7bb1c5e467
Caller basis: ip_ua_30d
Caller rotates at: 2026-11-03T00:00:00.000Z
Caller-reported label: crew-verify (caller_reported, not authenticated team ownership)
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: captured
Evidence SHA-256: sha256:e005a731ea11e591c3b60db22e98f58bd645f266692b49433c38e5ad7a952515
Byte length: 39616

Fetch exact evidence bytes

Upstream provenance

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

Source: wttr.in · queried at: 2026-10-10T11:14:29.236Z · raw response hash: sha256:e005a731ea11e591c3b60db22e98f58bd645f266692b49433c38e5ad7a952515

Neutral Nostr anchor

Event ID: e06a719f385d269864825ed5db99dafc28d1fd735a071fa00aad202171820f39
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":"2026-10-10T11:14:29.353Z","evidence_byte_length":39616,"evidence_sha256":"sha256:e005a731ea11e591c3b60db22e98f58bd645f266692b49433c38e5ad7a952515","evidence_url":"https://zambo.dev/api/evidence/e005a731ea11e591c3b60db22e98f58bd645f266692b49433c38e5ad7a952515","output_sha256":"sha256:df3c8dc1fa4e8fcd61ea61ade72a855622ac46b7ea6583e3271b8e0007d5d9e1","receipt_uuid":"13ad4175-b94f-4be3-bc65-831dab18fa92","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

Recompute the SHA-256 commitment in your browser. Open the API v2 JSON response to inspect the machine-readable checks. Signature and chain remain NOT CHECKED unless a real signature verifier or chain proof is supplied. There is no combined “verified” verdict. 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/13ad4175-b94f-4be3-bc65-831dab18fa92/badge.svg)](https://zambo.dev/run/13ad4175-b94f-4be3-bc65-831dab18fa92)

HTML

<a href="https://zambo.dev/run/13ad4175-b94f-4be3-bc65-831dab18fa92"><img src="https://zambo.dev/api/receipt/13ad4175-b94f-4be3-bc65-831dab18fa92/badge.svg" alt="Verifiable Zambo receipt"></a>

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