shipped/projects/crypto/oss

Crypto Key Classifier

17 validators covering ~50 chains + BIP-39/Electrum mnemonics. Cosmos HRP swap: one decode → 20 re-encodings. 229 tests.

source ↗

At a glance

shipped

2026-07-12

validators

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.