{"api_version":2,"receipt_profile":"zambo-hosted-receipt/1","schema_url":"https://zambo.dev/aer-1/hosted-profile.schema.json","id":"1cd3fc5e-e64f-4111-839e-1084146697a2","source_url":"https://zambo.dev/api/receipt/1cd3fc5e-e64f-4111-839e-1084146697a2","receipt":{"id":"1cd3fc5e-e64f-4111-839e-1084146697a2","created_at":"2026-10-22T07:03:12.670Z","receipt_schema_version":"0.4","job_summary":"url: https://zambo.dev/run/28c79cde-20a0-48a3-b4ec-e5d0e3ac104d","tools":["pdf_extract"],"steps":[{"tool":"pdf_extract","status":"success","started_at":"2026-10-22T07:03:10.928Z","completed_at":"2026-10-22T07:03:12.670Z"}],"output_hash":"sha256:406453e24900297af52a544a1b0094783585a756c48b5caf5e5914121f438790","hash_algorithm":"sha256","canonical_bytes":"{"caller":{"basis":"ip_ua_30d","id":"sha256:b57b745e89361335114f9ab746b333a3b66b095d8fc7dba8b6116e7199b1bdc4","rotates_at":"2026-11-03T00:00:00.000Z","type":"anonymous"},"issuer_claims":{"provenance_class":"EXECUTED BY ZAMBO"},"output":{"content_type":"text/html","extracted_text":"Secondary receipt · saved and checkable | Zambo\n\nSecondary receipt · saved and checkable\n\n✓ This result hasn’t changed since it was saved.\n\nSent by cairnworks-watch using Zambo\n\nCheck this receipt\n\nGet receipts for my own AI work\n\nSaved:\n\n2026-10-18T19:18:34.009Z\n\nWhat was asked:  The request recorded for this receipt.\n\nZambo is the verifiable work layer for AI.\n\nObserved result\n\nreceipt type: secondary\nid: 79335193-6663-4e0c-b2a1-6d84bd331b9c\nhash algorithm: sha256\ncanonical byte length: 22244\noutput hash: sha256:da848d4b1073ea059a57c2a5e35f603fa3e38a9b4cb6eac7b5813d369d1faa58\nsubmitted at: 2026-10-18T19:18:33.961Z\nsubmitter: anonymous\nclaims / model: deepseek-flash via DSH (DeepSeek Harness)\nclaims / task description: standing verification receipt chain: re-drawn checks, hash-chained signed receipts\nclaims / claimed completed at: 2026-10-18T19:17:54+00:00\nsource url: https://api.hashn.com/workspaces/85c63fa5-158e-44c6-ba30-7adb1da909dd/files/receipts/chain.jsonl\nevidence breakdown 1 / type: web_link\nevidence breakdown 1 / tier: weak\nevidence breakdown 1 / check: unverifiable\nevidence breakdown 2 / type: reproducibility_artifact\nevidence breakdown 2 / tier: strong\nevidence breakdown 2 / check: unverifiable\nevidence breakdown 3 / type: file_timestamp\nevidence breakdown 3 / tier: medium\nevidence breakdown 3 / check: unverifiable\ngaps 1: claimed model &#39;deepseek-flash via DSH (DeepSeek Harness)&#39; has no supporting evidence above weak\ngaps 2: claimed task description &#39;standing verification receipt chain: re-drawn checks, hash-chained signed receipts&#39; has no supporting evidence above weak\ngaps 3: claimed claimed completed at &#39;2026-10-18T19:17:54+00:00&#39; has no supporting evidence above weak\nscore: 0\nscoring function: v1\naudit url: https://zambo.dev/receipts/79335193-6663-4e0c-b2a1-6d84bd331b9c\ndisclaimer: Zambo did not witness the original work. This receipt records evidence submitted at submitted_at and the results of the checks described. claimed_completed_at is submitter-asserted, not verified.\n\nThis is the saved result preview, not proof that the answer was correct.\n\nCheck this receipt\n\nCopy receipt link\n\nRun your own\n\nCheck this receipt\n\nThis page shows the result and when it was saved. Use the receipt checker to see whether the saved result has changed.\n\nRead AER-1 draft -24\n\nVerify yours\n\nOpen the API v2 JSON check\n\nAttach a Zambo receipt to your project\n\nSee example fixtures\n\nShow technical provenance details\n\nProvenance for every timeline entry\n\nEXECUTED BY ZAMBO  Zambo ran the tool call itself.\n\nOBSERVED VIA GATEWAY  A Zambo gateway observed request and response bytes from the named external executor. Zambo did not run that external action.\n\nLOGGED BY AGENT  An agent or local hook reported the action. Zambo attests that the record is unchanged since logging, not that the action happened as described.\n\nPrivate agent reasoning, built-in client actions, and direct calls to unrelated MCP servers are not included unless an agent or gateway reports them.\n\nWhat is an execution receipt?\n\nAn 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 .\n\nWhat the receipt can and cannot prove\n\nWhat is this?\n\nZambo'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.\n\nKeep the work moving\n\nThis receipt records a completed tool call. When the free allowance is not enough, choose the access path that fits the job.\n\nUNLOCK 24H DAY PASS ($0.99) →\n\nSee all plans on the pricing page →\n\nRUN YOUR OWN FREE CALL →\n\nOr  re-run this exact call , using the same tool and arg","note":"Text truncated to 4000 chars. Full document is 12005 chars.","summary":"- **Receipt metadata** – A secondary receipt (ID 79335193‑6663‑4e0c‑b2a1‑6d84bd331b9c) was generated at 2026‑10‑18 19:18:33.961 Z, using SHA‑256 over 22,244 canonical bytes, yielding hash da848d4b1073ea059a57c2a5e35f603fa3e38a9b4cb6eac7b5813d369d1faa58.  \n- **Claimed work details** – The receipt records a tool call by an anonymous submitter, claiming the model *deepseek‑flash via DSH (DeepSeek Harness)* completed a “standing verification receipt chain” task at 2026‑10‑18 19:17:54 Z, with source data at https://api.hashn.com/workspaces/85c63fa5‑158e‑44c6‑ba30‑7adb1da909dd/files/receipts/chain.jsonl.  \n- **Evidence assessment** – Three evidence types were logged: a weak‑tier web link, a strong‑tier reproducibility artifact, and a medium‑tier file timestamp; all checks were marked *unverifiable*. Consequently, gaps exist for the claimed model, task description, and completion time, each lacking evidence above the weak tier.  \n- **Verification score** – The receipt received a total score of **0** under scoring function v1, reflecting the absence of verifiable evidence for the key claims.  \n- **Scope and limitations** – Zambo’s receipt records the tool call and its byte‑level commitment but does **not** authenticate the issuer or confirm that the claimed work actually occurred; it","url":"https://zambo.dev/run/28c79cde-20a0-48a3-b4ec-e5d0e3ac104d","word_count":1119},"receipt_schema_version":"0.4","side_effects":{"declaration_hash":"sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee","declared":["none"],"schema_version":"zambo-side-effects/1"},"tool":{"name":"pdf_extract","scope":"public","version":"4.0.0"}}","canonical_bytes_withheld_for_privacy":false,"canonical_byte_length":6206,"verification_status":"verified","session_trail":[],"result_preview":"{\"url\":\"https://zambo.dev/run/28c79cde-20a0-48a3-b4ec-e5d0e3ac104d\",\"content_type\":\"text/html\",\"word_count\":1119,\"extracted_text\":\"Secondary receipt · saved and checkable | Zambo\\n\\nSecondary receipt · saved and checkable\\n\\n✓ This result hasn’t changed since it was saved.\\n\\nSent by cairnworks-watch using Zambo\\n\\nCheck this receipt\\n\\nGet receipts for my own AI work\\n\\nSaved:\\n\\n2026-10-18T19:18:34.009Z\\n\\nWhat was asked:  The request recorded for this receipt.\\n\\nZambo is the verifiable work layer for AI.\\n\\nObserved result\\n\\nreceipt type: secondary\\nid: 79335193-6663-4e0c-b2a1-6d84bd331b9c\\nhash algorithm: sha256\\ncanonical byte length: 22244\\noutput hash: sha256:da848d4b1073ea059a57c2a5e35f603fa3e38a9b4cb6eac7b5813d369d1faa58\\nsubmitted at: 2026-10-18T19:18:33.961Z\\nsubmitter: anonymous\\nclaims / model: deepseek-flash via DSH (DeepSeek Harness)\\nclaims / task description: standing verification receipt chain: re-drawn checks, hash-chained signed receipts\\nclaims / claimed completed at: 2026-10-18T19:17:54+00:00\\nsource url: https://api.hashn.com/workspaces/85c63fa5-158e-44c6-ba30-7adb1da909dd/files/receipts/chain.jsonl\\nevidence breakdown 1 / type: web_link\\nevidence breakdown 1 / tier: weak\\nevidence breakdown 1 / check: unverifiable\\nevidence breakdown 2 / type: reproducibility_artifact\\nevidence breakdown 2 / tier: strong\\nevidence breakdown 2 / check: unverifiable\\nevidence breakdown 3 / type: file_timestamp\\nevidence breakdown 3 / tier: medium\\nevidence breakdown 3 / check: unverifiable\\ngaps 1: claimed model 'deepseek-flash via DSH (DeepSeek Harness)' has no supporting evidence above weak\\ngaps 2: claimed task description 'standing verification receipt chain: re-drawn checks, hash-chained signed receipts' has no supporting evidence above weak\\ngaps 3: claimed claimed completed at '2026-10-18T19:17:54+00:00' has no supporting evidence above weak\\nscore: 0\\nscoring function: v1\\naudit url: https://zambo.dev/receipts/79335193-6663-4e0c-b2a1-6d84bd331b9c\\ndisclaimer: Zambo did not witness the original work. This receipt records evidence submitted at submitted_at and the results of the checks described. claimed_completed_at is submitter-asserted, not verified.\\n\\nThis is the saved result preview, not proof that the answer was correct.\\n\\nCheck this receipt\\n\\nCopy receipt link\\n\\nRun your own\\n\\nCheck this receipt\\n\\nThis page shows the result and when it was saved. Use the receipt checker to see whether the saved result has changed.\\n\\nRead AER-1 draft -24\\n\\nVerify yours\\n\\nOpen the API v2 JSON check\\n\\nAttach a Zambo receipt to your project\\n\\nSee example fixtures\\n\\nShow technical provenance details\\n\\nProvenance for every timeline entry\\n\\nEXECUTED BY ZAMBO  Zambo ran the tool call itself.\\n\\nOBSERVED VIA GATEWAY  A Zambo gateway observed request and response bytes from the named external executor. Zambo did not run that external action.\\n\\nLOGGED BY AGENT  An agent or local hook reported the action. Zambo attests that the record is unchanged since logging, not that the action happened as described.\\n\\nPrivate agent reasoning, built-in client actions, and direct calls to unrelated MCP servers are not included unless an agent or gateway reports them.\\n\\nWhat is an execution receipt?\\n\\nAn 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 .\\n\\nWhat the receipt can and cannot prove\\n\\nWhat is this?\\n\\nZambo'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.\\n\\nKeep the work moving\\n\\nThis receipt records a completed tool call. When the free allowance is not enough, choose the access path that fits the job.\\n\\nUNLOCK 24H DAY PASS ($0.99) →\\n\\nSee all plans on the pricing page →\\n\\nRUN YOUR OWN FREE CALL →\\n\\nOr  re-run this exact call , using the same tool and arg\",\"summary\":\"- **Receipt metadata** – A secondary receipt (ID 79335193‑6663‑4e0c‑b2a1‑6d84bd331b9c) was generated at 2026‑10‑18 19:18:33.961 Z, using SHA‑256 over 22,244 canonical bytes, yielding hash da848d4b1073ea059a57c2a5e35f603fa3e38a9b4cb6eac7b5813d369d1faa58.  \\n- **Claimed work details** – The receipt records a tool call by an anonymous submitter, claiming the model *deepseek‑flash via DSH (DeepSeek Harness)* completed a “standing verification receipt chain” task at 2026‑10‑18 19:17:54 Z, with source data at https://api.hashn.com/workspaces/85c63fa5‑158e‑44c6‑ba30‑7adb1da909dd/files/receipts/chain.jsonl.  \\n- **Evidence assessment** – Three evidence types were logged: a weak‑tier web link, a strong‑tier reproducibility artifact, and a medium‑tier file timestamp; all checks were marked *unverifiable*. Consequently, gaps exist for the claimed model, task description, and completion time, each lacking evidence above the weak tier.  \\n- **Verification score** – The receipt received a total score of **0** under scoring function v1, reflecting the absence of verifiable evidence for the key claims.  \\n- **Scope and limitations** – Zambo’s receipt records the tool call and its byte‑level commitment but does **not** authenticate the issuer or confirm that the claimed work actually occurred; it\",\"note\":\"Text truncated to 4000 chars. Full document is 12005 chars.\"}","result_preview_integrity":"display_only_not_committed","result_preview_truncated":false,"input_hash":"sha256:63f49eefa82000a59dc8740b6badfd9d4c3de25bed9f9bfc1f0972a104954c72","input_hash_layout":"zambo-json-sorted-keys-utf8-v1","free_used":0,"free_remaining":20,"free_limit":20,"signal_handle":null,"tool":{"name":"pdf_extract","version":"4.0.0","scope":"public"},"caller":{"type":"anonymous","id":"sha256:b57b745e89361335114f9ab746b333a3b66b095d8fc7dba8b6116e7199b1bdc4","basis":"ip_ua_30d","rotates_at":"2026-11-03T00:00:00.000Z"},"side_effects":{"declared":["none"],"schema_version":"zambo-side-effects/1","declaration_hash":"sha256:45aad38f3aa982b9aafe92ecb416ebe98791eddbaf8ab6df0bd08605b7c1bfee"},"evidence_sha256":"sha256:039c6777dc94defed89c11deb204791234389fcbd01f3ed4cd82dea417fae075","evidence_url":"/api/evidence/039c6777dc94defed89c11deb204791234389fcbd01f3ed4cd82dea417fae075","evidence_byte_length":34931,"evidence_content_type":"text/html","evidence_source_url":"https://zambo.dev/run/28c79cde-20a0-48a3-b4ec-e5d0e3ac104d","evidence_status":"captured","external_evidence":[],"provenance":null,"provenance_class":"EXECUTED BY ZAMBO","metadata_hash":"sha256:c263f8a4283f6a0be29550e522a92c1f312c610fde403d14d9b96705a3556b24","anchor":{"event_id":"429a23b19291ce48a366d0c3097d0df9101d39bd0c417a9ada1279f6fa80228c","pubkey":"e13475107d30c918ec664adf2ab1141024a22fb35190f82c9e933704fa49af41","relays":["wss://relay.damus.io","wss://nos.lol","wss://relay.primal.net"],"status":"partial","published_at":"2026-10-22T07:03:13.404Z","schema_version":"zambo-receipt-anchor/1","envelope":{"anchored_at":"2026-10-22T07:03:12.670Z","evidence_url":"https://zambo.dev/api/evidence/039c6777dc94defed89c11deb204791234389fcbd01f3ed4cd82dea417fae075","receipt_uuid":"1cd3fc5e-e64f-4111-839e-1084146697a2","output_sha256":"sha256:406453e24900297af52a544a1b0094783585a756c48b5caf5e5914121f438790","schema_version":"zambo-receipt-anchor/1","evidence_sha256":"sha256:039c6777dc94defed89c11deb204791234389fcbd01f3ed4cd82dea417fae075","evidence_byte_length":34931},"envelope_bytes":"{\"anchored_at\":\"2026-10-22T07:03:12.670Z\",\"evidence_byte_length\":34931,\"evidence_sha256\":\"sha256:039c6777dc94defed89c11deb204791234389fcbd01f3ed4cd82dea417fae075\",\"evidence_url\":\"https://zambo.dev/api/evidence/039c6777dc94defed89c11deb204791234389fcbd01f3ed4cd82dea417fae075\",\"output_sha256\":\"sha256:406453e24900297af52a544a1b0094783585a756c48b5caf5e5914121f438790\",\"receipt_uuid\":\"1cd3fc5e-e64f-4111-839e-1084146697a2\",\"schema_version\":\"zambo-receipt-anchor/1\"}"},"receipt_profile":"zambo-hosted-receipt/1","schema_url":"https://zambo.dev/aer-1/hosted-profile.schema.json","api_version":1,"verification_scope":"separate_sha256_commitment_and_provenance_binding_checks","checks":{"commitment_matches":{"label":"SHA-256 commitment","passed":true,"status":"pass","detail":"The exact decoded canonical bytes match the stored SHA-256 output hash."},"canonical_payload_matches":{"label":"Canonical payload reconstruction","passed":true,"status":"pass","detail":"The stored output and known call context reconstruct the exact canonical bytes."},"provenance_binding":{"label":"Provenance claim binding","status":"pass","passed":true,"detail":"The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated."},"metadata_binding":{"label":"AER-1 metadata hash","status":"pass","passed":true,"detail":"metadata_hash matches the canonical metadata block."},"signature":{"label":"Ed25519 signature (not checked)","passed":false,"status":"not_checked","detail":"No Ed25519 signature or pinned signing key was checked."},"chain":{"label":"Receipt chain (not checked)","passed":false,"status":"not_checked","detail":"No append-only receipt-chain proof was checked."},"issued_by_zambo_dev":{"label":"Issuer authentication","passed":false,"status":"not_checked","detail":"A zambo.dev receipt URL does not authenticate the issuer; no pinned signature or trusted issuer key was checked."},"immutable_log_timestamp":{"label":"Stored timestamp","passed":true,"timestamp":"2026-10-22T07:03:12.670Z","detail":"The receipt store reports 2026-10-22T07:03:12.670Z; immutability is not checked here."},"receipt_schema_version":"0.4","signature_valid":{"label":"Ed25519 signature (not checked)","passed":false,"status":"not_checked","detail":"Compatibility field only. No Ed25519 signature was checked; use API v2 checks.commitment_matches for the SHA-256 commitment."},"chain_valid":{"label":"Receipt chain (not checked)","passed":false,"status":"not_checked","detail":"This endpoint does not verify an append-only chain."}},"execution_context":{"source":"zambo.dev","environment":"zambo.dev hosted MCP"}},"verification_status":"verified","checks":{"commitment_matches":{"status":"pass","passed":true,"expected_hash":"sha256:406453e24900297af52a544a1b0094783585a756c48b5caf5e5914121f438790","computed_hash":"sha256:406453e24900297af52a544a1b0094783585a756c48b5caf5e5914121f438790","detail":"SHA-256 of the exact decoded canonical bytes matches output_hash."},"canonical_payload_matches":{"label":"Canonical payload reconstruction","passed":true,"status":"pass","detail":"The stored output and known call context reconstruct the exact canonical bytes."},"provenance_binding":{"label":"Provenance claim binding","status":"pass","passed":true,"detail":"The metadata claim is consistent with the verified receipt bytes; issuer is not authenticated."},"metadata_binding":{"label":"AER-1 metadata hash","status":"pass","passed":true,"detail":"metadata_hash matches the canonical metadata block."},"issuer_authentication":{"label":"Issuer authentication","passed":false,"status":"not_checked","detail":"A zambo.dev receipt URL does not authenticate the issuer; no pinned signature or trusted issuer key was checked."},"signature":{"status":"not_checked","detail":"No Ed25519 signature or pinned signing key is supplied."},"schema":{"status":"not_checked","detail":"Schema conformance is left to the client using the linked hosted-profile schema."},"chain":{"status":"not_checked","detail":"This endpoint does not verify an append-only receipt chain."}}}