Bitcoin-Blu

Slogan: "Did you miss the early days of Bitcoin?
Don't miss the early days of Bitcoin-Blu!"

🐛 Open Issues

• currently only main network is started, we must configure test, reg, and signet
• currently the source code compiles not for windows
• we should updtae the translations
• the testcases are mostly broken, we need to fix them
• there are a lot of places in the UI where we have to replace the label "bitcoin" with "bitcoin-blu"
• also we have to rename the executables
• we should implement a DNS Seed Server
• we should implement a wallet for the BBLU coins
• we should implement a block explorer

🚀 Getting Started with Bitcoin-Blu

1. Download and Install Bitcoin-Blu Full Node

Option A: Build from Source

• Download source from GitHub https://github.com/bitcoin-blu/bitcoin-blu
• Compile source
• Run executable file

Option B: Docker

You do not need to expose the ports, unless you allow incomming connections (8343) and/or want to run bitcoin-cli (rpc: 8342) outside docker.

docker run -d --name blu-node \
  -v $HOME/blu-data:/bitcoin \
  -p 8342:8342 -p 8343:8343 \
  bitblu/bitcoin-blu \
  -printtoconsole \
  -rpcallowip=0.0.0.0/0 \
  -rpcpassword=yourpassword \
  -rpcuser=youruser \
  -server=1 \
  -datadir=/bitcoin

Verify the node is running:

docker exec -it blu-node /bitcoin-cli -rpcuser=youruser -rpcpassword=yourpassword getblockchaininfo

2. Generate a Bitcoin-Blu Wallet Address

• Either use the CLI or UI client to create the wallet
• Generate e.g. a legacy address (Bitcoin-Blu addresses have their own prefixes!)
• Backup your wallet!

3. Mine Bitcoin-Blu Coins (BBLU)

• Install your own mining pool software or use the experimental one (no backup, no garanteed payout) at: 157.245.20.33
• Supported mining setups:
  • Stratum protocol: stratum+tcp://157.245.20.33:7002
  • tested with Canaan, Avalon Nano3 miner
  • tested with Nerdminer
  • pool does currently not work with BitAxe (difficulty negotiation problem)
• Start mining Bitcoin-Blu!
• Have fun! 🎉

🔧 Bitcoin-Blu Internals

What is not changed in contrast to Bitcoin

• Coinbase Maturity: 100 blocks before coinbase is spendable
• Block Reward: Initial block subsidy of 50 * COIN
• Halving Interval: 210,000 blocks per subsidy halving
• Max Money 21 million BBLU cap
• PoW Target Timespan: 1,209,600 seconds (2 weeks)
• PoW Target Spacing: 600 seconds (10 minutes per block)
• Max Halvings: Reward stops after 64 halvings

Key Differences from Bitcoin (see datails on github)

• Changed the name of the runnables to from bitcoind to bitcoinblu-d and from bitcoin-cli to bitcoinblu-cli
• Changed chain name to Bitcoin-Blu: main-blu
• Changed default ports for all networks (mainnet: 8343)
• Changed default RPC port for all networks (mainnet: 8342)
• Created and restarted a new blockchain (2025-07-25 07:06:21)
• Changed prefixes of addresses, keys, and messages
• Legacy (P2PKH) addresses start with 'B' (e.g. BFT1v37hk8mMarJvX5Uy4mJZkDJsS2kmWC)
• SegWit (P2SH-P2WPKH) addresses start with 'b' (e.g. brDhW3dP3ypoZZ6wuqdL9ueAcbL289nAGH)
• Native SegWit (P2WPKH) addresses start with 'bb' (e.g. bb1quzdkde7zpxz7hzdnm54y4sjqqrfkk7pjtpgsmp)
• Changed icon
• Changed currency name to Bitcoin-Blu (BBLU)