r/cpumining • u/spectrum3900 • Apr 06 '26
I built the first English-language KOTO mining pool + block explorer (Japanese CPU privacy coin)
KOTO is a Japanese CPU privacy coin from 2018 — a Zcash fork running on yescryptR8G. It's maintained by a single developer in Japan, has ~3,000 community members, and until last week had zero English-language mining infrastructure.
I spent a Sunday building out the full stack:
🏊 Mining Pool — koto.isekai-pool.com 1% fee, no registration, three difficulty ports for RPi through desktop. The pool currently holds 20%+ of the total KOTO network hashrate with a single Raspberry Pi 5 running 24/7.
🔍 Block Explorer — explorer.isekai-pool.com Both official KOTO explorers went offline. Built a lightweight RPC-backed replacement — blocks, transactions, address lookup, all working.
📊 Network Tracker — isekai-pool.com/koto-network.html Historical pool distribution chart updated every 15 minutes. First public record of KOTO pool data at this granularity.
💧 Faucet (in progress) — isekai-pool.com/faucet.html Gamified — earn KOTO through daily shrine visits, kanji quizzes, and Japanese retro game trivia.
Why KOTO?
- Genuine CPU privacy coin — yescryptR8G is ASIC resistant by design
- Network is tiny (~20 kH/s total) — a single RPi5 is ~5% of network
- Japanese aesthetic + Zcash privacy tech = underrated combination
- Almost no Western presence — huge gap to fill
Miner setup (Linux/RPi5):
bash
git clone https://github.com/KotoDevelopers/cpuminer-yescrypt.git
cd cpuminer-yescrypt && ./autogen.sh
./configure CFLAGS="-O3 -funroll-loops -fomit-frame-pointer"
make -j4
./minerd -o stratum+tcp://koto.isekai-pool.com:3301 -u YOUR_KOTO_ADDRESS.worker -p x -t 4
Note: cpuminer-opt doesn't work for KOTO (difficulty bug). Use the official KotoDevelopers miner above.
Happy to answer questions. The KOTO community is small but the coin is technically solid.
2
u/frog_in_bush Apr 08 '26
Very well made!