This repository contains the implementation of an itcoin "consensus node", which implements the Frosted Byzantine Fault Tolerance (FBFT) Proof-of-Authority consensus algorithm for the itcoin blockchain. You can find more information about itcoin at the project web page.

Please note that this software is solely intended for testing and experimentation purposes, and is not ready for use in a production environment: In its current form, it misses features — such as support for dynamic federations — that are crucial for any real-world deployment.

👇👇👇 Hereafter you find the instructions to get started with FBFT. 👇👇👇

1. Install build and dev dependencies with apt (system-wide):

sudo apt install --no-install-recommends -y \
    autoconf \
    automake \
    bsdextrautils \
    ca-certificates \
    cmake \
    g++ \
    gcc \
    git \
    jq \
    libtool \
    make \
    openssh-client \
    pkg-config \
    python3 \
    tmux \
    xxd \
    zlib1g-dev

sudo apt install --no-install-recommends -y \
    libargtable2-dev \
    libboost-filesystem1.74-dev \
    libboost-log1.74-dev \
    libboost-program-options1.74-dev \
    libboost-test1.74-dev \
    libboost-thread1.74-dev \
    libcurl4-openssl-dev \
    libdb5.3++-dev \
    libevent-dev \
    libsqlite3-dev \
    libssl-dev \
    libzmq3-dev \
    swi-prolog

2. Clone the repository itcoin-core

cd ~
git clone https://github.com/bancaditalia/itcoin-core.git

3. Clone the repository bancaditalia/itcoin-fbft, at the same level of itcoin-core:

cd ~
git clone https://github.com/bancaditalia/itcoin-fbft.git

4. Build the project

cd ~/itcoin-fbft
mkdir build
cd build
cmake -DITCOIN_CORE_SRC_DIR=../../itcoin-core ..
make -j$(nproc --ignore=1)

5. Reset and start 4 mining network bridge nodes.

This will setup a 4-nodes infrastructure with 10 seconds target block time.

cd ~/itcoin-fbft
./infra/reset-infra.sh 10
./infra/start-infra.sh

The above command will spawn 4 itcoin-core daemon nodes that are used for testing. You can query the state of the mining nodes using the command line. After a reset, all nodes should have 0 blocks.

cd ~/itcoin-fbft
./infra/bitcoin-cli.sh 0 getblockchaininfo
./infra/bitcoin-cli.sh 1 getblockchaininfo
./infra/bitcoin-cli.sh 2 getblockchaininfo
./infra/bitcoin-cli.sh 3 getblockchaininfo

6. Start the miner consensus nodes

We suggest that you run the four nodes in different terminals:

cd ~/itcoin-fbft
build/src/main -datadir=infra/node00
build/src/main -datadir=infra/node01
build/src/main -datadir=infra/node02
build/src/main -datadir=infra/node03

Ensure that the 4 mining network bridge nodes are up and running. Then launch:

cd ~/itcoin-fbft/build
make test