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v0.2.0: draft-laxsharma-pact-02, examples, terms profile and reference implementation - #11

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What this changes

Revision -02 of draft-laxsharma-pact, with the 0.2 schemas, the examples, an example terms profile and the reference implementation. The draft remains an individual submission with no standing: no working group has adopted it and the IETF has not endorsed it.

The document now specifies only the records, their digests, the signer rules, a state machine over a Facilitator-signed event trace, five endpoints and the Merkle commitment. Settlement terms are carried by reference: a profile URI, a digest over the profile bundle, and parameters the document never reads. The -01 liability member is gone and its figures become the parameters of the example profile in profiles/bonded-restitution/. The Work Attestation becomes the Outcome Record, every accepted request is answered with a signed Contract Status, delivery_hash covers the Delivery's signature, signature sets are sorted, alg names are the fully specified ones of RFC 9864, media types move to the vendor tree, and the two requested registries are withdrawn. Examples are minted from public seeds with real Ed25519 signatures, and every digest in Section 15 is read from examples/ by the build.

The -01 printed spec_hash and vtc_hash values that no conforming RFC 8785 canonicalizer computes, because ours serialized the number one as 1.0. Appendix B says so and vector V-25 pins the rule.

Why

Two readers on dispatch@ observed in September 2026 that -01 made who owed whom the subject of the document. They were right.

Sections affected

All of them; Appendix B lists every change. Removed: the bid, cfb and attestation schemas and examples/attestation.json.

  • python3 tools/validate.py passes (107 checks with cryptography)
  • xml2rfc --text draft/draft-laxsharma-pact-02.xml builds

…ed Delivery

Standalone repository fixes ahead of -02; the posted -01 text is unchanged.

- pactcore: signatures_ordered() (sorted by the Section 9.1 normalized kid,
  ties by the raw kid, code point order); ECDSA signatures are emitted and
  accepted only in the low-S form, with the P-256 and P-384 group orders as
  constants.
- facilitator: an unsorted signature set is refused as signatures-unordered
  (422, Section 13.1) after the signer-identity check, recorded as CHOICES
  C9; --problems exports the problem-type table for the registry section.
- validate: the delivery_hash checks include the Delivery signature, as
  facilitator.py always did; identifier normalization and the assurance
  constraint are imported from pactcore (exact decimal, no 1e-9 slack), and
  each worked bound is checked from both sides one cent apart; V-07 is the
  draft's own vector (a trailing "/" only; Section 9.1 folds scheme and host,
  not the path); four checks added: the curve orders proved by computing n*G,
  and vectors V-21 (unsorted set) and V-22 (high-S). 66 checks become 71.
- examples: verdict.json and challenge.json delivery_hash recomputed over the
  signed Delivery. -01 prints this digest only truncated, and the truncated
  value matches neither construction.
- schemas: bid.schema.json and cfb.schema.json removed; -01 withdrew the
  sealed-bid procedure and its examples were already quarantined.
- Makefile builds -01; both READMEs updated.

Gates: tools/validate.py 71 passed; tools/measure.py five paths with money
balanced, 24 refusals and 2 acceptances, the third-party-signer case still
refused as unexpected-signer.
Revision -02 of the Internet-Draft, built from plan version 2 of 16 September
2026 after the dispatch@ thread. The document now specifies records, digests,
signer rules, a state machine over a Facilitator-signed event trace, the five
endpoints and the Merkle commitment; settlement terms are carried by reference
to a profile (URI, bundle digest, opaque parameters) and the -01 terms become a
non-normative example profile in Appendix A. Work Attestation is renamed
Outcome Record; every response is a signed Contract Status; contract trees
work across Facilitators; media types move to the vendor tree; no registries.

Gates: xml2rfc text and HTML build clean (stream warning only); no line over
72 columns; idnits 0 errors, 0 flaws (remaining warnings are the vendor-tree
media type names read as FQDNs and aligned columns in artwork); scope lint
zero party-directed requirements and zero Facilitator rules about value.
Digests in Section 15 and the figures are placeholders until the 0.2 examples
exist; the validator count in Section 16 likewise.
Schemas for every -02 object (Status and Outcome Record new, attestation
gone), the bonded-restitution profile bundle with seven vectors, examples
minted from public seeds with real Ed25519 signatures, a Facilitator on
the signed event trace with trees and lapses, the validator at 103 checks
and the harness at ten paths, 40 refusals and 5 acceptances. Every digest
in Section 15 is read from examples/ by the build.

pactcore.jcs now formats numbers as RFC 8785 requires; it printed the
float one as 1.0, so the -01 spec_hash and vtc_hash were never the
digests a conforming canonicalizer computes. Vector V-25 pins it. Figures
wider than 72 columns are folded per RFC 8792.
… profile bundle

A mechanical cross-reference of the -02 text against the schemas, the
reference implementation, the examples and the profile bundle, plus five
read-only reviews, found about a hundred inconsistencies. All are fixed here.

Text: Table 2 restructured (event, where recorded, members) with the
Verdict admissibility rule stated once (DELIVERED or WINDOW_OPEN with none
standing, or DISPUTED answering a pending Challenge); pending Challenge
defined; instants pass when the clock reads them or later; clock-driven
entries precede posted records; window-opened shares the `at` of the entry
it follows; a named Verifier may answer its own Challenge; the manifest
value form and the two profile facts in 12.1 restated; figures regenerated
from examples/ with only signatures and parameters elided; 14.1 forbids
jwk, jku, x5c, x5u, x5t, x5t#S256, crit and any unprotected header (V-26);
signature-invalid and signature-missing are 400; retrieval and issued_at in
the capability document; the -01 verification fund is posted by the Seller,
following the -01 figure; "proof of nonconformance" replaces "fraud proof".

Schemas: strict timestamps, uri patterns, evidence and proof members,
facilitator document (issued_at, retrieval, settlement_bindings, endpoints),
arbiter withdrawn.

Code: pactcore rejects the forbidden header members and unprotected
headers, norm() folds only scheme and host; facilitator implements the
admissibility rule, the clock ordering, object-conflict on a differing
child record, rollback on a profile invariant failure; profile admission
order and Seller-posted fund; two admission vectors appended to the bundle
(nine vectors); validate 107 checks; measure 44 refusals, 5 acceptances.

Every digest was re-minted after the profile README gained its departures
section, and mapped into the text by script.
@laxsharma
laxsharma merged commit b62d7c8 into main Sep 17, 2026
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