Receipt publication · saved and checkable

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Sent using Zambo

Saved:
What was asked: The request recorded for this receipt.

Zambo is the verifiable work layer for AI.

Observed result

schema: zambo.redacted-receipt-publication/1 redacted projection: true source receipt id: 9936e9a2-e514-4d74-9f65-98783f83926f source output hash: sha256:085e0e776147c248a33df1a066b5d7a5d0920dfe663c240ffc6c0e5d238a4a7f source tool: handover publication notice: This is a newly committed redacted publication copy, not the original tool output. The original commitment is unchanged and its private bytes are withheld. output: {"handover_id":"f286e21c-4131-4201-a35b-4b226b8cd9b7","url":"https://zambo.dev/handover/f286e21c-4131-4201-a35b-4b226b8cd9b7","reused":false,"agent_id":"agent-786d819d55dae56f1d00fef5","agent_url":"https://zambo.dev/agent/agent-786d819d55dae56f1d00fef5","badge_url":"https://zambo.dev/badge/agent-786d819d55dae56f1d00fef5.svg","share_text":"Here's the handover for Acme c492cd1d: rewrote landing copy, checked links (c492cd1d). https://zambo.dev/handover/f286e21c-4131-4201-a35b-4b226b8cd9b7 Each listed step has a verifiable receipt you can check in your browser.","workflow_receipt_url":"https://zambo.dev/run/577ab3b2-0519-4a64-b77e-b269bfe96407","verify_url":"https://zambo.dev/api/v2/receipt/577ab3b2-0519-4a64-b77e-b269bfe96407/verify","steps":8,"ai_use_statement":"AI use: audit helped with 3 of 8 steps. See the listed receipts.","graph":{"aer":"draft-zambo-aer1-20","edges":[{"to":"n2","from":"n1","kind":"next"},{"to":"n3","from":"n2","kind":"next"},{"to":"n4","from":"n3","kind":"next"},{"to":"n5","from":"n4","kind":"next"},{"to":"n6","from":"n5","kind":"next"}],"nodes":[{"ai":{"name":"Zambo rubric","used":false},"id":"n1","seal":{"reason":"An eligible pass is required to seal this workflow. Individual receipts remain available.","sealed":false},"type":"plan","label":"Plan bounded checks","receipt":"26ae5e37-f631-4a4a-9f9c-1c6a28c7bba7"},{"ai":{"name":"audit","used":true},"id":"n2","seal":{"reason":"An eligible pass is required to seal this workflow. Individual receipts remain available.","sealed":false},"type":"do","label":"your work","receipt":"288aae62-26c6-4be9-b6c5-810db1e1f0a9"},{"ai":{"name":"Zambo rubric","used":false},"id":"n3","seal":{"reason":"An eligible pass is required to seal this workflow. Individual receipts remain available.","sealed":false},"type":"check","check":{"what":"Source URLs resolve; reachability only, not support for a claim","reason":"No source URLs supplied.","result":"not_checked"},"label":"Check source reachability","receipt":"6d34856c-a417-4071-b3d7-a9940d3d0be7"},{"ai":{"name":"Zambo rubric","used":false},"id":"n4","seal":{"reason":"An eligible pass is required to seal this workflow. Individual receipts remain available.","sealed":false},"type":"check","check":{"what":"Check citation markers","reason":"Additional checks require a pass after the first free loop.","result":"not_checked"},"label":"Check citation markers","receipt":"8ef3be6f-7a2a-4985-a6ad-e830cdc68796"},{"ai":{"name":"Zambo rubric","used":false},"id":"n5","seal":{"reason":"An eligible pass is required to seal this workflow. Individual receipts remain available.","sealed":false},"type":"check","check":{"what":"Check numbers have citations","reason":"Additional checks require a pass after the first free loop.","result":"not_checked"},"label":"Check numbers have citations","receipt":"75fa182b-f9d7-43d5-a98e-126c6fff361d"},{"ai":{"name":"Zambo rubric","used":false},"id":"n6","seal":{"reason":"An eligible pass is required to seal this workflow. Individual receipts remain available.","sealed":false},"type":"check","check":{"what":"Retries and optional second-AI review","reason":"Available with a pass after the first free loop.","result":"not_checked"},"label":"Additional review and retries skipped","receipt":"b36bd139-9c89-4980-8d67-3ac206606f76"}],"access":{"mode":"check_only","payment":{"amount":"990000","pay_to":"0xb753…b9AC","network":"eip155:8453","x402_url":"https://zambo.dev/api/x402/day-pass","retry_same_call":true},"gate_line":"That worked. Keep going for 24 hours: $0.99, one time, no subscription. https://zambo.dev/day-pass/?ref=limit No human approval is required by Zambo; your wallet's spending policy applies."},"issues":[],"schema":"zambo.graph/1","retries":{"max":2,"used":0},"sources":{"resolved":0,"not_checked":0,"not_resolved":0},"summary":"Checked 0 things, fixed 0, all receipts attached.","template":"research-with-sources","planned_scope":{"note":"Next steps are planned work, not recorded executions. This loop checks only the supplied work.","total":3,"not_checked":3}},"progress":"Checked 0 things, fixed 0, all receipts attached.","graph_url":"https://zambo.dev/handover/f286e21c-4131-4201-a35b-4b226b8cd9b7/graph.json","sources":{"resolved":0,"not_resolved":0,"not_checked":0},"warnings":[],"acceptance_url":"https://zambo.dev/handover/f286e21c-4131-4201-a35b-4b226b8cd9b7/acceptance.json","release_hint":"hold","ais":["audit","No AI used"],"not_checked":["The supplied work was saved, not independently executed or checked."],"shield":"pass","visibility":"public","redactions":0,"owner_url":"https://zambo.dev/handover/f286e21c-4131-4201-a35b-4b226b8cd9b7"}

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 this receipt?

This is a verifiable receipt for a journal entry. It confirms receipt, redaction, timestamping, and chaining. It does not attest to execution.

What the receipt can and cannot prove

What is this?

Zambo's receipt store reports a journal entry from an agent or local hook. The SHA-256 commitment covers the receipt bytes. The provenance label is only a claim, not proof of issuer identity or that the reported action happened.

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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: 2026-10-22T12:10:26.737Z; external immutability is not checked

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Get receipts for your own AI work: add zambo.dev/mcp

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  • ClaudeSettings, Connectors, Add custom connector, paste the URL.
    https://zambo.dev/mcp
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    https://zambo.dev/mcp
  • GrokAdd a remote MCP server in your Grok client and paste the URL.
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  • CursorPaste into ~/.cursor/mcp.json.
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Show receipt data and verification evidence

Committed provenance claim

LOGGED BY AGENT

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

Receipt ID
0a630262-9f7b-52c9-adf0-4017b9e4189d
SHA-256 output hash
sha256:e22da29fb10e8b3df365b74c531733b533c1094e3a34634c9dc042705731d3aa
Canonical bytes
{"caller":{"id":"sha256:e923c8fd96c40be01e4bca727368b477b3fe1350479f78fe9127ae85acde5fef","type":"session"},"issuer_claims":{"provenance_class":"LOGGED BY AGENT"},"output":{"output":"{\"handover_id\":\"f286e21c-4131-4201-a35b-4b226b8cd9b7\",\"url\":\"https://zambo.dev/handover/f286e21c-4131-4201-a35b-4b226b8cd9b7\",\"reused\":false,\"agent_id\":\"agent-786d819d55dae56f1d00fef5\",\"agent_url\":\"https://zambo.dev/agent/agent-786d819d55dae56f1d00fef5\",\"badge_url\":\"https://zambo.dev/badge/agent-786d819d55dae56f1d00fef5.svg\",\"share_text\":\"Here's the handover for Acme c492cd1d: rewrote landing copy, checked links (c492cd1d). https://zambo.dev/handover/f286e21c-4131-4201-a35b-4b226b8cd9b7 Each listed step has a verifiable receipt you can check in your browser.\",\"workflow_receipt_url\":\"https://zambo.dev/run/577ab3b2-0519-4a64-b77e-b269bfe96407\",\"verify_url\":\"https://zambo.dev/api/v2/receipt/577ab3b2-0519-4a64-b77e-b269bfe96407/verify\",\"steps\":8,\"ai_use_statement\":\"AI use: audit helped with 3 of 8 steps. See the listed receipts.\",\"graph\":{\"aer\":\"draft-zambo-aer1-20\",\"edges\":[{\"to\":\"n2\",\"from\":\"n1\",\"kind\":\"next\"},{\"to\":\"n3\",\"from\":\"n2\",\"kind\":\"next\"},{\"to\":\"n4\",\"from\":\"n3\",\"kind\":\"next\"},{\"to\":\"n5\",\"from\":\"n4\",\"kind\":\"next\"},{\"to\":\"n6\",\"from\":\"n5\",\"kind\":\"next\"}],\"nodes\":[{\"ai\":{\"name\":\"Zambo rubric\",\"used\":false},\"id\":\"n1\",\"seal\":{\"reason\":\"An eligible pass is required to seal this workflow. Individual receipts remain available.\",\"sealed\":false},\"type\":\"plan\",\"label\":\"Plan bounded checks\",\"receipt\":\"26ae5e37-f631-4a4a-9f9c-1c6a28c7bba7\"},{\"ai\":{\"name\":\"audit\",\"used\":true},\"id\":\"n2\",\"seal\":{\"reason\":\"An eligible pass is required to seal this workflow. Individual receipts remain available.\",\"sealed\":false},\"type\":\"do\",\"label\":\"your work\",\"receipt\":\"288aae62-26c6-4be9-b6c5-810db1e1f0a9\"},{\"ai\":{\"name\":\"Zambo rubric\",\"used\":false},\"id\":\"n3\",\"seal\":{\"reason\":\"An eligible pass is required to seal this workflow. Individual receipts remain available.\",\"sealed\":false},\"type\":\"check\",\"check\":{\"what\":\"Source URLs resolve; reachability only, not support for a claim\",\"reason\":\"No source URLs supplied.\",\"result\":\"not_checked\"},\"label\":\"Check source reachability\",\"receipt\":\"6d34856c-a417-4071-b3d7-a9940d3d0be7\"},{\"ai\":{\"name\":\"Zambo rubric\",\"used\":false},\"id\":\"n4\",\"seal\":{\"reason\":\"An eligible pass is required to seal this workflow. Individual receipts remain available.\",\"sealed\":false},\"type\":\"check\",\"check\":{\"what\":\"Check citation markers\",\"reason\":\"Additional checks require a pass after the first free loop.\",\"result\":\"not_checked\"},\"label\":\"Check citation markers\",\"receipt\":\"8ef3be6f-7a2a-4985-a6ad-e830cdc68796\"},{\"ai\":{\"name\":\"Zambo rubric\",\"used\":false},\"id\":\"n5\",\"seal\":{\"reason\":\"An eligible pass is required to seal this workflow. Individual receipts remain available.\",\"sealed\":false},\"type\":\"check\",\"check\":{\"what\":\"Check numbers have citations\",\"reason\":\"Additional checks require a pass after the first free loop.\",\"result\":\"not_checked\"},\"label\":\"Check numbers have citations\",\"receipt\":\"75fa182b-f9d7-43d5-a98e-126c6fff361d\"},{\"ai\":{\"name\":\"Zambo rubric\",\"used\":false},\"id\":\"n6\",\"seal\":{\"reason\":\"An eligible pass is required to seal this workflow. Individual receipts remain available.\",\"sealed\":false},\"type\":\"check\",\"check\":{\"what\":\"Retries and optional second-AI review\",\"reason\":\"Available with a pass after the first free loop.\",\"result\":\"not_checked\"},\"label\":\"Additional review and retries skipped\",\"receipt\":\"b36bd139-9c89-4980-8d67-3ac206606f76\"}],\"access\":{\"mode\":\"check_only\",\"payment\":{\"amount\":\"990000\",\"pay_to\":\"0xb753be5Eac5B29c711051DfF91279834e9C9b9AC\",\"network\":\"eip155:8453\",\"x402_url\":\"https://zambo.dev/api/x402/day-pass\",\"retry_same_call\":true},\"gate_line\":\"That worked. Keep going for 24 hours: $0.99, one time, no subscription. https://zambo.dev/day-pass/?ref=limit No human approval is required by Zambo; your wallet's spending policy applies.\"},\"issues\":[],\"schema\":\"zambo.graph/1\",\"retries\":{\"max\":2,\"used\":0},\"sources\":{\"resolved\":0,\"not_checked\":0,\"not_resolved\":0},\"summary\":\"Checked 0 things, fixed 0, all receipts attached.\",\"template\":\"research-with-sources\",\"planned_scope\":{\"note\":\"Next steps are planned work, not recorded executions. This loop checks only the supplied work.\",\"total\":3,\"not_checked\":3}},\"progress\":\"Checked 0 things, fixed 0, all receipts attached.\",\"graph_url\":\"https://zambo.dev/handover/f286e21c-4131-4201-a35b-4b226b8cd9b7/graph.json\",\"sources\":{\"resolved\":0,\"not_resolved\":0,\"not_checked\":0},\"warnings\":[],\"acceptance_url\":\"https://zambo.dev/handover/f286e21c-4131-4201-a35b-4b226b8cd9b7/acceptance.json\",\"release_hint\":\"hold\",\"ais\":[\"audit\",\"No AI used\"],\"not_checked\":[\"The supplied work was saved, not independently executed or checked.\"],\"shield\":\"pass\",\"visibility\":\"public\",\"redactions\":0,\"owner_url\":\"https://zambo.dev/handover/f286e21c-4131-4201-a35b-4b226b8cd9b7\"}","publication_notice":"This is a newly committed redacted publication copy, not the original tool output. The original commitment is unchanged and its private bytes are withheld.","redacted_projection":true,"schema":"zambo.redacted-receipt-publication/1","source_output_hash":"sha256:085e0e776147c248a33df1a066b5d7a5d0920dfe663c240ffc6c0e5d238a4a7f","source_receipt_id":"9936e9a2-e514-4d74-9f65-98783f83926f","source_tool":"handover"},"receipt_schema_version":"0.4","side_effects":{"declaration_hash":"sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee","declared":["none"],"schema_version":"zambo-side-effects/1"},"tool":{"name":"receipt_publication","scope":"public","version":"4.0.0"}}
Timestamp

Bound call context

Receipt schema
0.4
Tool name
receipt_publication
Tool version
4.0.0
Permission scope
public
Caller type
session
Caller ID
sha256:e923c8fd96c40be01e4bca727368b477b3fe1350479f78fe9127ae85acde5fef
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
no_upstream_bytes_captured
Evidence SHA-256
unavailable
Byte length
unavailable

Neutral Nostr anchor

Event ID
0cccf1dec0eb4a36ffcbed3a53c4cacfd14e2289fac46569d1aa2036e74c586e
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":"2026-10-22T12:10:26.737Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:e22da29fb10e8b3df365b74c531733b533c1094e3a34634c9dc042705731d3aa","receipt_uuid":"0a630262-9f7b-52c9-adf0-4017b9e4189d","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.

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Markdown

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HTML

<a href="https://zambo.dev/run/0a630262-9f7b-52c9-adf0-4017b9e4189d?ref=badge"><img src="https://zambo.dev/api/receipt/0a630262-9f7b-52c9-adf0-4017b9e4189d/badge.svg" alt="Verifiable Zambo receipt"></a>

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