Tycho

Reference implementation of Tycho protocol.

About

Tycho is a high-performance protocol designed for building L1/L2 TVM blockchain networks. By utilizing DAG (Directed Acyclic Graph) for consensus and TVM for parallel execution, Tycho works with high throughput and low latency.

• Testnet Validators Guide
• CLI Reference

Development

• Install Rust:

  curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
• Install dependencies:

  sudo apt install build-essential git libssl-dev zlib1g-dev pkg-config clang jq
• Install tools:

  cargo install lychee cargo-shear cargo-nextest
• Test CI locally:

  just ci

To run prebuilt tests

check this guide.

Running a Local Network

# Generate zerostate config stub (with optional --force flag):
just init_zerostate_config
# Generate node config sub (with optional --force flag):
just init_node_config
# Generate a local network of 3 nodes (with optional --force flag):
just gen_network 3

# Start nodes in separate terminals or spawn them with `&`:
just node 1
just node 2
just node 3

Note

By default the dev profile is used. Use this env to specify a different profile:

export TYCHO_BUILD_PROFILE=release

Prebuilt RocksDB

By default, we compile RocksDB (a C++ project) from source during the build. By linking to a prebuilt copy of RocksDB this work can be avoided entirely. This is a huge win, especially if you clean the ./target directory frequently.

To use a prebuilt RocksDB, set the ROCKSDB_LIB_DIR environment variable to a location containing librocksdb.a:

export ROCKSDB_LIB_DIR=/usr/lib/
cargo build -p tycho-cli

Note, that the system must provide a recent version of the library which, depending on which operating system you're using, may require installing packages from a testing branch. Or you could build the RocksDB from source manually:

# Install dependencies
sudo apt install clang lld libjemalloc-dev libgflags-dev libzstd-dev liblz4-dev

# Clone the repo
cd /path/to
git clone https://github.com/facebook/rocksdb.git
cd rocksdb
git checkout v9.7.4

# Build the library
mkdir -p build && cd ./build
export CC=/usr/bin/clang
export CXX=/usr/bin/clang++
cmake -DCMAKE_POSITION_INDEPENDENT_CODE=ON -DCMAKE_BUILD_TYPE=Release \
  -DWITH_LZ4=ON -DWITH_ZSTD=ON -DWITH_JEMALLOC=ON ..
make -j16 rocksdb

# Set env somewhere
export ROCKSDB_LIB_DIR=/path/to/rocksdb/build

Contributing

We welcome contributions to the project! If you notice any issues or errors, feel free to open an issue or submit a pull request.

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)

at your option.