Zerochain is a privacy-preserving blockchain on substrate. It is designed to get efficient zero-knowledge proving, reduce the on-chain storage cost and bring the flexibility for developing applications.
WARNING: Zerochain is alpha quality software, improvements and fixes are made frequently, and documentation for technical details doesn't yet exist.
For now, only supported for the "confidential payment PoC".
- Balance for each account is encrypted
- Transfer amount is encrypted
More features will be added... 💪💪
curl https://sh.rustup.rs -sSf | sh
rustup update stable
rustup update nightly
rustup target add wasm32-unknown-unknown --toolchain nightly
cargo +nightly install --git https://github.com/alexcrichton/wasm-gc
You will also need to install the following packages:
- Mac:
brew install cmake pkg-config openssl git llvm
- Linux:
sudo apt install cmake pkg-config libssl-dev git clang libclang-dev
git clone git@github.com:LayerXcom/zero-chain.git
cd zero-chain
./build.sh
cargo build --release
This tutorial will explain the basic confidential transfer on Zerochain. Alice has the encrypted balance of 100 coins and sends encrypted 10 coins to Bob. So, Alice's balance will be 90 coins and Bob will get the 10 coins. All operations are done encrypted by ElGamal encryption and zk-SNARKs.
- Setup for zkSNARKs from CLI
- Get the proving key and the veifying key for zk-SNARKs
./target/release/zero-chain-cli setup
- Run the nodes
./target/release/zero-chain --dev
- If you want to clear your old chain's history:
./target/release/zero-chain purge-chain --dev
- Run the UI apps
The UI repository is here: https://github.com/LayerXcom/zero-chain-ui
- Generate the transaction from CLI
- Generate the transaction components (Computing a zero-knowledge proofs and an encryption)
./target/release/zero-chain-cli generate-tx
- For more information (if you want to set the customized amount and address)
./target/release/zero-chain-cli generate-tx --help
- Fill out the form:
You can send the transaction from firefox browser.
- Feel free to submit your own issues and PRs
- For further discussions and questions talk to us on Gitter