Introduction

Cryptosat periodically generates a 32-byte random beacon and stores it on a smart contract on the Velas blockchain. This tutorial guides through the steps to retrieve and verify randomness generated by Cryptosat.

Getting Started

You'll need the following tools to complete the steps in this tutorial:

• The Remix IDE or any Solidity development environment
• MetaMask
• Velas wallet and Velas testnet VLX

Setup MetaMask

To deploy a smart contract on any blockchain, you need a wallet and corresponding token to pay for the fee.

1. Install MetaMask browser extension.

2. Open MetaMask and follow the instruction to setup a new account. Copy your secret recovery phrase into a secure location. You need this to access your walllet later.

3. Configure MetaMask for Velas Network following this article.

Acquire Testnet VLX

1. Install Velas CLI

2. Generate a Velas Wallet

mkdir ~/my-velas-wallet
velas-keygen new --outfile ~/my-velas-wallet/my-keypair.json

3. Airdrop some tokens to your wallet

velas airdrop 10 <RECIPIENT_ACCOUNT_ADDRESS> --url https://explorer.testnet.velas.com/rpc

Replace <RECIPIENT_ACCOUNT_ADDRESS> with your base58 encoded public key address.

4. Transfer Velas Native coin to Velas EVM with evm-utils

velas evm transfer-to-evm -k ~/my-velas-wallet/my-keypair.json <VELAS_EVM_ADDRESS> <AMOUNT>

<VELAS_EVM_ADDRES> will be the public address of your MetaMask wallet.