Show HN: 83K lines of C++ – cryptocurrency written from scratch, not a fork
github.com
Technical choices: - Equihash (200,9) for PoW – memory-hard, ASIC-resistant - Keccak-256 for all hashing – chose this over SHA-256 after doing my own cryptanalysis - UTXO model, 10-minute blocks, 21M supply cap - Actor model for P2P networking
The SHA-256 research: I found distinguishers up to 23 rounds using differential cryptanalysis. At 17 rounds, a single-bit delta in w15 creates a 7-bit near-collision. Full diffusion only happens at round 24. This influenced my decision to use Keccak-256 instead.
Network is live with 9+ nodes across Seoul, Virginia, France. A community member in France already built a block explorer without being asked.
Built with AI assistance (Claude). Happy to answer questions about the architecture or the SHA-256 analysis.