Verifiable receipt e2055858 - pdf_extract result | Zambo

✓ This result hasn’t changed since it was saved.

Saved: 2026-10-15T23:23:32.783Z
What was asked: The request recorded for this receipt.

Zambo is the verifiable work layer for AI.

Zambo is the verifiable work layer for AI. Verifiable receipt for a pdf_extract call on Zambo: {"url":"https://datatracker.ietf.org/doc/draft-zambo-aer1/20/","content_type":"text/html","word_count":14570

Observed result

url: https://datatracker.ietf.org/doc/draft-zambo-aer1/20/ content type: text/html word count: 14570 extracted text: draft-zambo-aer1-20 - AER-1: A Portable Execution Receipt for AI Agent Tool Calls Skip to main content Datatracker Groups By area/parent Apps & Realtime General Internet Ops & Management Routing Security Web and Internet Transport IESG IAB IRTF IETF LLC RFC Editor Other Active AGs Active Areas Active Directorates Active IAB Workshops Active Programs Active RAGs Active Teams New work Chartering groups BOFs BOF Requests Other groups Concluded groups Non-WG lists Documents Search Recent I-Ds Submit an Internet-Draft RFC streams IAB IRTF ISE Editorial Subseries STD BCP FYI Meetings Agenda Materials Floor plan Registration Important dates Request a session Session requests Upcoming meetings Upcoming meetings Past meetings Past meetings Meeting proceedings Other IPR disclosures Liaison statements IESG agenda NomComs Downref registry Statistics I-Ds/RFCs Meetings API Help Release notes System status Report a bug User Sign in Password reset Preferences New account List subscriptions IETF Lists IRTF Lists IAB Lists RFC-Editor Lists Report a bug Sign in Javascript disabled? Like other modern websites, the IETF Datatracker relies on Javascript. Please enable Javascript for full functionality. AER-1: A Portable Execution Receipt for AI Agent Tool Calls draft-zambo-aer1-20 Status Email expansions History Versions: 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 This document is an Internet-Draft (I-D). Anyone may submit an I-D to the IETF. This I-D is not endorsed by the IETF and has no formal standing in the IETF standards process . Document Type Active Internet-Draft (individual) Author Brennan Zambo Last updated 2026-10-15 RFC stream (None) Intended RFC status (None) Formats txt htmlized bibtex bibxml Stream Stream state (No stream defined) Consensus boilerplate Unknown RFC Editor Note (None) IESG IESG state I-D Exists Telechat date (None) Responsible AD (None) Send notices to (None) Email authors IPR References Referenced by Nits Nits v3 Search email archive draft-zambo-aer1-20 Independent Submission B. Zambo Internet-Draft Zambo Intended status: Informational 15 October 2026 Expires: 15 April 2027 AER-1: A Portable Execution Receipt for AI Agent Tool Calls draft-zambo-aer1-20 Abstract This document specifies AER-1, a small vocabulary for recording one AI agent tool call as a portable, independently checkable execution receipt. A receipt identifies the execution, records when it happened, preserves the canonical bytes used for the output commitment, names the tool and caller scope, carries a provenance class, and resolves at a stable public URL. The format separates what the system observed from claims about the outside world, and it separates provenance (who ran or reported the action) from the record itself. A reference implementation is deployed, and its receipts are publicly verifiable without an account or token. The specification covers workflow receipts, which bind an ordered sequence of step receipts to a single goal with a Merkle root over the step sequence, and hash-chained job timelines for tamper-evident sequencing of executions. This revision closes honesty and precision gaps: it adds the workflow-receipt truncation limit (new Section 8.4), normatively specifies the external anchor format and its verification procedure (rewritten Section 10, new Section 10.1), fixes a RECOMMENDED/MUST contradiction in Section 8.1, makes the Section 6 verification step testable, and documents replay, low-entropy, empty-record, and size-limit considerations. It changes no receipt field, digest construction, or existing verification rule. The -13 revision fixes a malformed sentence in the Abstract, three incorrect section cross-references, stale Table of Contents page numbers, a skipped footer page number, misaligned table rows, an note: Text truncated to 4000 chars. Full document is 102568 chars.

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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 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.

What the receipt can and cannot prove

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.

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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: 2026-10-15T23:23:32.783Z; external immutability is not checked

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Show receipt data and verification evidence

Committed provenance claim

EXECUTED BY ZAMBO

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

Receipt ID: e2055858-7032-40cb-8907-6f8f906e7ba0
SHA-256 output hash: sha256:9b73fec033e7b2439fd8345876eba159b022e18d888cd02a206f3d8e307917fd
Canonical bytes: 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
Timestamp: 2026-10-15T23:23:32.783Z

Bound call context

Receipt schema: 0.4
Tool name: pdf_extract
Tool version: 4.0.0
Permission scope: public
Caller type: anonymous
Caller ID: sha256:fb8fbaadc4950dc2987184a6a93813c88137009063090d8b1e6692a6a05c0846
Caller basis: ip_ua_30d
Caller rotates at: 2026-11-03T00:00:00.000Z
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: c6b33d17bc3a9069f63886513d6c4dfaf679a2d8e61aeb5b7937d442ede3c81e
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":"2026-10-15T23:23:32.783Z","evidence_byte_length":null,"evidence_sha256":null,"evidence_url":null,"output_sha256":"sha256:9b73fec033e7b2439fd8345876eba159b022e18d888cd02a206f3d8e307917fd","receipt_uuid":"e2055858-7032-40cb-8907-6f8f906e7ba0","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.

Embed this receipt

Markdown

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HTML

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