Verifiable receipt a5fa4908 - zambot_fix result | Zambo

Observed result

{"fix":"FAILURE MODE: Logic error – the code fails to detect revoked evidence IDs in authority‑bearing references (signing_authority_refs).\n\nINTENT DETECTED: The original code aims to raise a ValueError when any revoked evidence ID appears anywhere in the document’s references, including authority‑bearing signing authority references.\n\nFIXED CODE:\nrevoked_refs = set(document.get(\"segments\", {}).get(\"trust\", {}).get(\"revocations\", []))\nif revoked_refs:\n    def referenced_evidence(value):\n        if isinstance(value, dict):\n            for key, item in value.items():\n                if key == \"source_ref\" and item in revoked_refs:\n                    yield item\n                elif key == \"evidence_refs\" and isinstance(item, list):\n                    yield from (ref for ref in item if ref in revoked_refs)\n                else:\n                    yield from referenced_evidence(item)\n        elif isinstance(value, list):\n            for item in value:\n                yield from referenced_evidence(item)\n\n    blocked = set(referenced_evidence(document.get(\"segments\", {})))\n    # also check authority‑bearing signing authority references\n    signing_refs = document.get(\"governance\", {}).get(\"signing_authority_refs\", [])\n    blocked.update(ref for ref in signing_refs if ref in revoked_refs)\n\n    if blocked:\n        raise ValueError(\"AgentDNA references revoked evidence: \" + \", \".join(sorted(blocked)))","text":"FAILURE MODE: Logic error – the code fails to detect revoked evidence IDs in authority‑bearing references (signing_authority_refs).\n\nINTENT DETECTED: The original code aims to raise a ValueError when any revoked evidence ID appears anywhere in the document’s references, including authority‑bearing signing authority references.\n\nFIXED CODE:\nrevoked_refs = set(document.get(\"segments\", {}).get(\"trust\", {}).get(\"revocations\", []))\nif revoked_refs:\n    def referenced_evidence(value):\n        if isinstance(value, dict):\n            for key, item in value.items():\n                if key == \"source_ref\" and item in revoked_refs:\n                    yield item\n                elif key == \"evidence_refs\" and isinstance(item, list):\n                    yield from (ref for ref in item if ref in revoked_refs)\n                else:\n                    yield from referenced_evidence(item)\n        elif isinstance(value, list):\n            for item in value:\n                yield from referenced_evidence(item)\n\n    blocked = set(referenced_evidence(document.get(\"segments\", {})))\n    # also check authority‑bearing signing authority references\n    signing_refs = document.get(\"governance\", {}).get(\"signing_authority_refs\", [])\n    blocked.update(ref for ref in signing_refs if ref in revoked_refs)\n\n    if blocked:\n        raise ValueError(\"AgentDNA references revoked evidence: \" + \", \".join(sorted(blocked)))"}

Verify this receipt

This is a verifiable receipt: the result above is hashed and timestamped at a permanent URL.

• Read the AER-1 Internet-Draft
• Check it with the conformance verifier
• See example fixtures

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?

An AI agent completed a tool call through Zambo, and this page records the result. The SHA-256 hash below fingerprints exactly what the agent produced. The timestamp shows when it ran. The Nostr anchor posts that fingerprint to public relays, so the record exists outside Zambo too. Check the hash yourself.

What is an execution receipt?

An execution receipt is the public record of one completed AI agent tool call. Read the canonical definition of an AI agent execution receipt.

Keep the work moving

This receipt proves the call completed. When the free allowance is not enough, choose the access path that fits the job.

UNLOCK 24H DAY PASS ($0.99) →

See all plans on the pricing page →

Share this receipt

Share on X · Copy link

Verification checks

• Integrity check: Recomputable from canonical bytes
• Issued by zambo.dev: Served from the zambo.dev receipt store
• Chain valid: Receipt hash chain is internally consistent
• Recorded in the immutable log: 2026-09-28T22:46:56.078Z

Proof of observed execution

EXECUTED BY ZAMBO

Receipt ID

a5fa4908-13d4-4c0d-a1e3-9711bbd710a0

SHA-256 output hash

sha256:1d4b94f85db1cc3f21598938b4d9d03c2fd436c6d4761733cab68e88c9d98182

Canonical bytes

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

Timestamp

2026-09-28T22:46:56.078Z

Bound call context

Receipt schema

0.3

Tool name

zambot_fix

Tool version

4.0.0

Permission scope

public

Caller type

anonymous

Caller ID

sha256:857a342c7e18a1c3dd01755a54651d3e0955a974863601eb31176533f2da9ee7

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

sha256:9ea0086030fafdf323ea1a06caaa28770c84837747fb02fe3038586624089bb9

Byte length

2952

Fetch exact evidence bytes

Neutral Nostr anchor

Event ID

ee258e3eca64b76fcb504e26988493eaf00e60c7b9fa7c742f254aae85fd4544

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":"2026-09-28T22:46:56.046Z","evidence_byte_length":2952,"evidence_sha256":"sha256:9ea0086030fafdf323ea1a06caaa28770c84837747fb02fe3038586624089bb9","evidence_url":"https://zambo.dev/api/evidence/9ea0086030fafdf323ea1a06caaa28770c84837747fb02fe3038586624089bb9","output_sha256":"sha256:1d4b94f85db1cc3f21598938b4d9d03c2fd436c6d4761733cab68e88c9d98182","receipt_uuid":"a5fa4908-13d4-4c0d-a1e3-9711bbd710a0","schema_version":"zambo-receipt-anchor/1"}

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

Check this hash yourself

Open the verification endpoint. The server recomputes the SHA-256 from the stored bytes and answers verified:true. If it does not say verified, do not trust this page. 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/a5fa4908-13d4-4c0d-a1e3-9711bbd710a0/badge.svg)](https://zambo.dev/run/a5fa4908-13d4-4c0d-a1e3-9711bbd710a0)

HTML

<a href="https://zambo.dev/run/a5fa4908-13d4-4c0d-a1e3-9711bbd710a0"><img src="https://zambo.dev/api/receipt/a5fa4908-13d4-4c0d-a1e3-9711bbd710a0/badge.svg" alt="Verifiable Zambo receipt"></a>

Open badge SVG

Recent verifiable receipts

• zambo_universal · 2026-09-28T23:29:36.036Z
• zambo_universal · 2026-09-28T22:52:34.534Z
• zambo_swarm · 2026-09-28T22:47:23.104Z
• zambot_fix · 2026-09-28T22:46:56.078Z
• code_review · 2026-09-28T22:46:41.366Z