Casper Network is a Proof of stake blockchain built over CBC Casper specification. Using a proof of stake architecture enables sharding a database scaling method. Businesses can use Casper for creating permissioned or private applications. The key feature that Casper provides is predictable gas fees, Upgradeable contracts, and WebAssembly.
The native coin of the Casper Network is CSPR. As PoS blockchain uses the validators to participate in consensus mechanisms for making it secure and uphold the network. So this CSPR coin is used to pay the validators as a reward, also users have to pay gas fees in CSPR for on-chain actions.
Currently, Casper Network is not live yet and their coin is available on the coin list for the initial sale.
In this blog, we are going to show to set up the environment for the Casper Network contract development. Currently, Casper uses Rust to write smart contracts like we use solidity with Ethereum/Binance.
Prerequisites:-
- Rust
- Cmake
- Google Protobuf Compiler
Step 1: Install dependencies
cargo install cargo-casper
Step 2: Setup your Project. By using this command it will create a new project and its structure with a sample contract and its corresponding test cases.
cargo casper my-project
Step 3: Now you have the project set up at your end. You need to compile the contract and run the corresponding in order to test all things are working fine.
// Install required tools
cd contract
rustup install $(cat rust-toolchain)
rustup target add --toolchain $(cat rust-toolchain) wasm32-unknown-unknown
// Compile and create a build
cargo build --release
// Run test cases
cd ../tests
cargo test
Step 4: Once this sample code is working. You can use the code of this repository for standard ERC20 over Casper Network. Simply replace the main.rs and test folder from Repository.
Link: https://github.com/casper-ecosystem/erc20
Step 5: Install the Casper Client. This is a CLI tool that can be used to interact with blockchain and contracts.
curl -JLO https://bintray.com/casperlabs/debian/download_file?file_path=casper-client_0.9.3-0_amd64.deb
sudo apt install -y ./casper-client_0.9.3-0_amd64.deb
// For interacting with contracts
casper-client put-deploy --session-hash <HEX STRING> --session-entry-point <FUNCTION_NAME>
Conclusion: By following this blog you will get an idea about Casper and how we can create your contract over the network.
