Synchronizing state with peers
Run a Babylon testnet node to participate in Bitcoin timestamping protocol verification with CometBFT consensus.
Execution topology, consensus mechanics, and operational assumptions.
Run this single diagnostics command on your host before beginning the installation to ensure you have sufficient compute, disk headroom, and proper privileges:
lscpu | grep "Model name\|CPU(s):"
free -h
df -h /
uname -aRetrieve the verified release binary from the Babylon GitHub repository and add it to your PATH.
wget https://github.com/babylonchain/babylon/releases/download/v0.8.5/babylond_0.8.5_linux_amd64.tar.gz
tar -xvf babylond_0.8.5_linux_amd64.tar.gz
sudo mv babylond /usr/local/bin/
babylond version0.8.5
Initialize node keys and genesis state for the bbn-test-3 network.
babylond init MyNode --chain-id bbn-test-3
curl -s https://github.com/babylonchain/networks/raw/main/bbn-test-3/genesis.json > ~/.babylond/config/genesis.jsongenesis.json downloaded
Configure your server firewall so that P2P gossip ports are accessible to network peers while internal RPC and Engine APIs remain strictly protected from public port scanners.
| Port / Protocol | Interface | Access Level | UFW Command |
|---|---|---|---|
| 22 / TCP | SSH Management | Restricted / VPN | sudo ufw allow 22/tcp |
| P2P Peer Ports | Gossip & Block Sampling | Public (0.0.0.0/0) | sudo ufw allow 26656/tcp |
| RPC / REST / API | Node Query & Transactions | Localhost Only (127.0.0.1) | (Do not open publicly) |
Let us know if you encountered any command errors or out-of-date instructions.