Get Started With Casper

1. Create and deploy a simple, smart contract with cargo casper and cargo test.

• Installing rust, cargo-casper with rust package manager
• Create the project which I named 1-simple-smart-contract
• Compile contract with WebAssembly and build it

cd contract
rustup install $(cat rust-toolchain)
rustup target add --toolchain $(cat rust-toolchain) wasm32-unknown-unknown
cargo build --release

• Test the contract.

• Deploy a simple contract

2. Complete one of the existing tutorials for writing smart contracts.

I choose "A Counter Contract Tutorial".

• Check faucet account:

nctl-view-faucet-account

• Create local network and running node:

nctl-assets-setup && nctl-start

- Get the state root hash and query actual state.

• Deploy counter contract and checking it state:

• The counter is currently set to 1

• After increment the counter again, the counter is set to 2.

3. Demonstrate key management concepts by modifying the client in the Multi-Sig tutorial to address one of the additional scenarios.

• First clone the keys management project: https://github.com/casper-ecosystem/keys-manager
• Create .env and run npm install
• Create an extension name "scenario-concept.js":

const keyManager = require('./key-manager');

(async function () {
    // 1. Weight of `fullAccount` to 2
    // 2. Key Management Threshold to 2
    // 3. Deploy Threshold to 1
    // 4. First new key with weight 1 (deploy key)

    let deploy;

    // 0. Initial state of the account.
    // There should be only one associated key (faucet) with weight 1.
    // Deployment Threshold should be set to 1.
    // Key Management Threshold should be set to 1.
    let masterKey = keyManager.randomMasterKey();
    let fullAccount = masterKey.deriveIndex(1);    // deployment and management
    let deployAccount = masterKey.deriveIndex(2);    // only for deployment

    console.log("\n0.1 Fund main account.\n");
    await keyManager.fundAccount(fullAccount);
    await keyManager.printAccount(fullAccount);
    
    console.log("\n[x]0.2 Install Keys Manager contract");
    deploy = keyManager.keys.buildContractInstallDeploy(fullAccount);
    await keyManager.sendDeploy(deploy, [fullAccount]);
    await keyManager.printAccount(fullAccount);

    // 1. Set fullAccount's weight to 2
    console.log("\n1. Set faucet's weight to 2\n");
    deploy = keyManager.keys.setKeyWeightDeploy(fullAccount, fullAccount, 2);
    await keyManager.sendDeploy(deploy, [fullAccount]);
    await keyManager.printAccount(fullAccount);
    
    // 2. Set Keys Management Threshold to 2.
    console.log("\n2. Set Keys Management Threshold to 2\n");
    deploy = keyManager.keys.setKeyManagementThresholdDeploy(fullAccount, 2);
    await keyManager.sendDeploy(deploy, [fullAccount]);
    await keyManager.printAccount(fullAccount);
    
    // 3. Set Deploy Threshold to 1.
    console.log("\n3. Set Deploy Threshold to 1.\n");
    deploy = keyManager.keys.setDeploymentThresholdDeploy(fullAccount, 1);
    await keyManager.sendDeploy(deploy, [fullAccount]);
    await keyManager.printAccount(fullAccount);
    
    // 4. Add first new key with weight 1 (first account).
    console.log("\n4. Add first new key with weight 1.\n");
    deploy = keyManager.keys.setKeyWeightDeploy(fullAccount, deployAccount, 1);
    await keyManager.sendDeploy(deploy, [fullAccount]);
    await keyManager.printAccount(fullAccount);
    
})();

And add scripts in package.json.

start:scenario-concept": "node -r dotenv/config ./src/scenario-concept.js"

• Then run command:

npm run start:scenario-concept

4. Learn to transfer tokens to an account on the Casper Testnet.

• First create casper account testnet in https://testnet.cspr.live/

• Then transfer CSPR to account

• Check balance account again

My testnet account: https://testnet.cspr.live/account/018375a8c5a3e58d257c07119269e560a1df2755c519de6a5ba136ead73ac23d11

• To transfer CSPR from account to another, go to https://testnet.cspr.live/transfer and make a transfer action

• Transfer logs: https://testnet.cspr.live/deploy/a605d2ee5f5ae8bbeb72b7de24ee49aa42956f6efb32a3507f3def59bfaff46c

5. Learn to Delegate and Undelegate on the Casper Testnet.

• To delegate go to and choose a validator then sign: https://testnet.cspr.live/delegate-stake.

• To undelegate go to and choose a validator then sign: https://testnet.cspr.live/undelegate-stake.