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The notebooks now carry the same didactic contract as the companion book
(the "ratchet rule", stated in the course map): every load-bearing idea
runs twice - napkin scale, then real scale - and every pair is EXECUTABLE
in the notebook, not narrated.
- Lecture 1: the truth boundary updated to the proven four-tier apex,
with the what-is-still-NOT-proven list (SHA-512, parsers, signing,
wallets) given equal weight.
- Lecture 2: napkin/real scoring pair - a two-certificate toy card
scored in your head, then the shipped sixteen-certificate R4 fixture
through the same function, residual blockers and per-tier boundary
axioms printed.
- Lecture 6: new split-view section. A runnable equivocation drill:
pin a two-leaf view, grow it honestly with a consistency proof, then
present a forged same-size root and watch the pin store name the
attack. Real-scale pointers to --sth-store, log-consistency,
log-audit, and the freshness policy; a new exercise asks students to
construct the lie a size-only anchor check would miss.
- Lecture 7: the wallet gate now swings BOTH ways on real evidence -
a partial card denied at R3, the shipped R4 card allowed - both
runnable.
- Lecture 8 capstone: "design R4" became "audit R4": read the shipped
card like an auditor, then design the R5 discharge plan (parser
specs, verified SHA-512, signing-side, per-fork production-path
mapping).
- NEW Lecture 9, "Eat Your Own Dogfood": the honest coverage ledger of
the proven-path verifier; a napkin PEM decode (the fixed 12-byte
Ed25519 SPKI prefix, read with your eyes) paired with the mechanical
extraction; live backend dispatch; the fail-closed
--require-verified-verifier policy; and the hybrid-PQC section -
proven-classical Ed25519 plus a required-but-honest ML-DSA slot
("blockers get fixed; placeholders get trusted").
Every code cell of the changed notebooks was executed end-to-end before
committing (outputs stripped per house rules). 49/49 tests green with
the notebook inventory updated.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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PACTA Curriculum Notebooks
This directory contains a zero-to-hero teaching sequence for proof-aware cryptographic tooling.
Start with 00_course_map.ipynb, then proceed in order. The notebooks are intentionally output-free in git. Run them from the repository root or from this directory; each notebook locates the repo root and imports pacta from src/.
The course teaches:
- theorem-boundary thinking,
- claim cards and residual risk,
- Lean replay and axiom audit concepts,
- proof hygiene,
- third-party proof-check provider trust,
- RFC 9162-style Merkle transparency logs,
- receipt-gated agent consequences (including the R4 wallet gate, now reachable),
- split-view defense: STH pinning, consistency enforcement, freshness, monitoring,
- dogfood verified cryptography and the honest hybrid post-quantum posture,
- research roadmaps from R4 evidence toward R5 assurance.
This curriculum is not financial advice, not a trading bot, and not a wallet-building guide. It is a training path for engineers and researchers who need to evaluate formal-verification-enhanced cryptographic tooling without overclaiming.