At a glance
shipped
2026-07-12
validators
17
tests
229
license
MIT
Highlights
Cosmos HRP swap
One decode → 20 re-encodings across Cosmos chains. HRP (human-readable part) is the only thing that changes.
BIP-39 + Electrum mnemonics
Word-list validation, checksum verification, seed derivation. Corruption-tolerant recovery.
229 tests + hypothesis fuzz
Property-based fuzzing on top of explicit cases. Argparse % bug regression caught post-ship.
4 version tags
v0.1.0-mvp → v0.4.0-hardened. Full brainstorm → spec → plan → subagent-execute cycle ×4.
Stack
Pythonpytesthypothesis
Born from a question about an old mystery-string-decoder project that no longer existed on disk. Built from scratch via full brainstorm→spec→plan→subagent-execute cycle ×4 plans. 4 version tags (v0.1.0-mvp → v0.4.0-hardened).
Source: github.com/JordanNewell/crypto-key-classifier — MIT, pip-installable, 229 tests, hypothesis fuzz suite.
Argparse % bug (bare % in help crashed --help) caught post-ship, fixed + 2-layer regression test added.