risc0-ed25519-verified/verification/GEN-MODEL.sha256
mrwulf 81a802f35b verification: bind the statements, the specifications, and the model (P1-a)
Phases 3/3b establish what each certificate RESTS ON. Neither says what it
SAYS, nor what it is ABOUT. A certificate gutted to a tautology of the same
axiom cone passes both; so does one whose reference definition has been
redefined to BE the extracted code, at which point the theorem reads
`loop = loop` and every cone is byte-identical.

Phase 3c closes that. Proofs/Audit.lean emits a canonical block holding the
policy constants, every certificate's fully-elaborated statement (pp.all, so
implicit arguments, instances and universe levels are visible), and the body
of every specification constant transitively reachable from those statements.
Its SHA-256 is pinned in check.sh and the block itself is committed as
AUDIT-MANIFEST.txt, so a mismatch is DIFFED, not merely reported. 31
certificates, 68 specification constants per repository.

Two tiers, not one. These forks have an arithmetic tier that must stay
oracle-free and an apex tier carrying this fork's hash and wire-format axioms,
and the apex boundary genuinely differs per fork (dalek 8 extra names, anza 4,
risc0 and betrusted 5). One shared constant would have widened the arithmetic
tier to accept hash oracles, which is the most valuable property these repos
have. Each auditor is generated from its own repository's policy.

Phase 0b pins the extracted model. This was not a precaution: risc0 and
betrusted were observed emitting BYTE-IDENTICAL audit-manifest digests
(6c821b8e…) while shipping demonstrably different extracted models, their
point-doubling routines differing in operation order. A statement names an
extracted function; it does not contain that function's body. Binding
statements is not binding the subject. Membership derives from the filesystem,
so a new model file fails closed.

selftest-statements.sh attacks both phases with ten cases, each asserting a
specific diagnostic: an edited model body, an unlisted model file, a widened
policy, a hand-edited committed block, a certificate dropped from the auditor
WITH the digest refreshed to match, and a gutted statement whose cone is
unchanged. It lifts the phases out of check.sh at run time, so it attacks the
shipping gate rather than a copy.

Two bugs found and fixed during that testing, both mine: Phase 3c read `$0`
after `cd "$AENEAS_LEAN"`, and $0 is the caller's relative path; and the
axgate self-test compared the tree against a pristine checkout rather than
against how it found it. A third expectation was wrong rather than the code —
widening the apex boundary is caught by the exact-cone requirement before the
digest ever runs, which is a stronger rejection, and the test now says so.

All sixteen runs green at these commits: four main buttons, four axgate
self-tests, four binding self-tests, four scalar buttons.

TRUSTED-BASE.md records what this binds and, at equal length, what it does
not: a digest binds identity, not meaning; an author can rotate the pins in
one commit and is caught by review, not by the script; and pinning the model
says nothing about whether Charon and Aeneas translated the Rust faithfully.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-29 00:38:20 +02:00

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c9cc095ef7ec6e1c1e914aec280468ad6bc27bdfb8c7eb0c2b647060a5cc7076 CurveField/FunsExternal_Template.lean
418682624b1591b6b7f5d245efa4312498255459ce47d9b507ab77d32439484a CurveField/Funs.lean
d197d7b9fe515863784eeee59a2fbb69735d10ebcf5cc4e03feb3afbeb53a2b7 CurveField/TypesExternal.lean
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28ed4991ccf04ffaf66d0f47bd1cc90dec9029ba7381d54ad1d8a3d684d074b3 CurveSig/Funs.lean
2358490d0b10aa95cfd951e65f9d52988da52740a5c8af209cd9e0bc45a26734 CurveSig/TypesExternal.lean
fe94bba57cba8a40aa6195f505eb56107c06f92be7dfc04931a7c05d104ae76a CurveSig/TypesExternal_Template.lean
29e72d1c365464b009a38e2310cebbf285e96c296e59ed098e06e647bbc5ffe6 CurveSig/Types.lean