Verifiable receipt 2eb01993 - workflow_seal result | Zambo

Verifiable receipt for a workflow_seal call on Zambo: {"status":"day_pass_required","workflow_id":"9bd7b104-26b6-449d-9385-10acf3a4f8ee","workflow_url":"https:/

Observed result

{"status":"day_pass_required","workflow_id":"9bd7b104-26b6-449d-9385-10acf3a4f8ee","workflow_url":"https://zambo.dev/workflow/9bd7b104-26b6-449d-9385-10acf3a4f8ee","next":"Pay once with day_pass_activate (x402), or have the human open day_pass_checkout_link. Then call workflow_seal for this workflow.","payment_paths":["day_pass_activate","day_pass_checkout_link"]}

This is the saved result preview, not proof that the answer was correct.

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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.
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: 2026-10-13T20:26:39.315Z; 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: 2eb01993-42b6-43e2-a04c-9909eadf28f5
SHA-256 output hash: sha256:69d142701290c7cc166e9cda318819faad40769da254a3be5b7696c6648e684a
Canonical bytes: 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
Timestamp: 2026-10-13T20:26:39.315Z

Bound call context

Receipt schema: 0.4
Tool name: workflow_seal
Tool version: 4.0.0
Permission scope: pass_required
Caller type: session
Caller ID: sha256:b22ab8b7aa12d714c96560fe7625f43a575ed1c1d4bf2fbcd2fb19f6807dbfb7
Declared side effects: state_write
Side-effects schema: zambo-side-effects/1
Declaration hash: sha256:dfb4412aa429d3ac637a05668c435bcc90a251363fcdd49f7b85ae4ab55b5bc9

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: 237e4fb27f77e47c8810e67be3c35e24765fe925ff907ffd7aa5ea241f787aa1
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":"2026-10-13T20:26:39.315Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:69d142701290c7cc166e9cda318819faad40769da254a3be5b7696c6648e684a","receipt_uuid":"2eb01993-42b6-43e2-a04c-9909eadf28f5","schema_version":"zambo-receipt-anchor/1"}

Anchor status "published": Published to all configured relay targets.

Check this hash yourself

API v2 status: verified. This status summarizes the v2 commitment and provenance checks; it does not prove 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

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HTML

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