koto.isekai-pool.com

1. What you need

Item	Notes
Raspberry Pi 5 (4GB or 8GB)	4GB is sufficient
MicroSD 32GB+ or USB SSD	SSD preferred for longevity
Power supply (5V 5A USB-C)	Official RPi PSU recommended
Ethernet cable	More reliable than WiFi for mining
KOTO wallet address	From the KOTO Core Client (see below)

2. Get a KOTO wallet address

Download the KOTO Core Client from the official site: https://ko-to.org

Available for Windows, macOS, and Linux. Wait for it to sync (this takes a few hours the first time — you can continue with miner setup while it syncs).

Once synced, go to File → Receiving Addresses and copy your k1... address. This is where your mining rewards will be sent.

Node / release builds: github.com/KotoDevelopers/koto/releases ↗

3. Install Ubuntu on RPi5

KOTO's official miner (cpuminer-yescrypt) compiles and runs best on Ubuntu.

# Flash Ubuntu 24.04 LTS (64-bit) for Raspberry Pi using Raspberry Pi Imager
# https://www.raspberrypi.com/software/
# Choose: Other general-purpose OS → Ubuntu → Ubuntu 24.04 LTS (64-bit)

Boot, complete setup, connect via SSH or directly.

4. Install dependencies

sudo apt update && sudo apt upgrade -y

sudo apt install -y \
  git build-essential automake autoconf \
  libcurl4-openssl-dev libssl-dev \
  libjansson-dev libgmp-dev \
  zlib1g-dev screen

5. Set CPU governor to performance

By default the RPi5 uses ondemand governor which throttles the CPU. Switch to performance for maximum hashrate.

echo performance | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

Make it permanent:

sudo apt install -y cpufrequtils
echo 'GOVERNOR="performance"' | sudo tee /etc/default/cpufrequtils

Verify it worked:

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
# Should output: performance

6. Clone and compile cpuminer-yescrypt

Do not use cpuminer-opt for KOTO. cpuminer-opt's yescryptR8G implementation has a difficulty calculation bug that causes all shares to be rejected. Use the official KotoDevelopers miner below.

cd ~
git clone https://github.com/KotoDevelopers/cpuminer-yescrypt.git
cd cpuminer-yescrypt
./autogen.sh
./configure CFLAGS="-O3 -funroll-loops -fomit-frame-pointer"
make -j4

Compilation takes 3–5 minutes. When complete verify it built:

./minerd --version

If make fails with curl errors, try: ./configure LIBS="-lcurl" instead (see troubleshooting).

7. Start mining

Connect to this pool — no registration required. Your KOTO wallet address is your username. Use the official minerd — no -a flag; it defaults to the correct algorithm.

./minerd \
  -o stratum+tcp://koto.isekai-pool.com:3301 \
  -u YOUR_KOTO_ADDRESS.rpi5 \
  -p x \
  -t 4

Replace YOUR_KOTO_ADDRESS with your k1... address. The .rpi5 part is your worker name — use anything you like.

Port guide

Port	Difficulty	Use for
3301	0.01	RPi5, low hashrate devices
3302	0.5	Desktop CPUs
3303	1.0	High-end CPUs, multi-core
3304	5	Cloud / high difficulty (if enabled on pool)

Expected output (example):

[2026-04-05 12:00:00] Starting Stratum on stratum+tcp://koto.isekai-pool.com:3301
[2026-04-05 12:00:01] 4 miner threads started, using 'yespower' algorithm.
[2026-04-05 12:00:02] Stratum connection established
[2026-04-05 12:00:03] accepted: 1/1 (100.00%), 1.05 khash/s (yay!!!)

accepted shares with 100% means everything is working correctly.

8. Run 24/7 with systemd

Create config (adjust paths and user):

sudo mkdir -p /etc/cpuminer
sudo nano /etc/cpuminer/config-koto.json

{
  "url": "stratum+tcp://koto.isekai-pool.com:3301",
  "user": "YOUR_KOTO_ADDRESS.rpi5",
  "pass": "x",
  "threads": 4
}

Create the systemd service:

sudo nano /etc/systemd/system/cpuminer-koto.service

[Unit]
Description=CPUMiner KOTO
After=network.target

[Service]
ExecStart=/home/rpi/cpuminer-yescrypt/minerd --config /etc/cpuminer/config-koto.json
Restart=always
RestartSec=10
User=rpi

[Install]
WantedBy=multi-user.target

sudo systemctl daemon-reload
sudo systemctl enable cpuminer-koto.service
sudo systemctl start cpuminer-koto.service

Check it's running:

journalctl -u cpuminer-koto.service -f

9. Expected performance

Hardware	Threads	Hashrate	Pool share
Raspberry Pi 5 (4GB)	4	~1,000–1,100 H/s	~5% of network
Raspberry Pi 4	4	~400–600 H/s	~2% of network
Intel N100 mini PC	4	~2,000–3,000 H/s	~10–15%
Intel i5-8500T	6	~6,000–8,000 H/s	~30–40%
Intel i9-14900F	16	~12,000–15,000 H/s	~60–75%

Network total hashrate is ~19 kH/s — KOTO is a small network where even modest hardware makes a meaningful contribution.

10. Troubleshooting

Problem	Fix
make fails with curl errors	Run ./configure LIBS="-lcurl" instead
All shares rejected	You're using cpuminer-opt — use cpuminer-yescrypt instead
unknown algorithm error	Don't use -a flag — minerd defaults to correct algo
Low hashrate (~100 H/s)	CPU governor is ondemand — switch to performance
Connection refused	Check pool status at koto.isekai-pool.com
Wallet not syncing	KOTO chain is ~4.3M blocks, sync takes 2–4 hours

11. Monitor your mining

Pool dashboard: /stats
Your worker stats: /workers/YOUR_KOTO_ADDRESS (use your k1... only — or the lookup on Miners)
Block explorer: explorer.isekai-pool.com
Network stats: miningpoolstats.stream/koto

12. Windows setup (Alienware / desktop)

Download the official KotoMiner from cpuminer-yescrypt releases. Extract KotoMiner_Win_x64.zip. Edit start.bat:

minerd-avx2.exe -o stratum+tcp://koto.isekai-pool.com:3302 -u YOUR_KOTO_ADDRESS.desktop -p x -t 16

Use minerd-avx2.exe for Intel 8th gen+ and AMD Ryzen. Use port 3302 for desktop CPUs. Example with a sample worker name:

minerd-avx2.exe -o stratum+tcp://koto.isekai-pool.com:3302 -u k1Ev447YkYF3BCKf8ryph7afYZGhRtBASDW.alienware -p x -t 16

Double-click start.bat to start mining.

Mine KOTO on Raspberry Pi 5