About

A lottery on Blast built with Pyth Entropy for generating secure random numbers.

The codebase is broken up into 2 contracts:

• BlastLottery.sol
• PythRandomNumberGenerator.sol

BlastLottery

BlastLottery is the main contract that stores the list of lottery and ticket. It start a round by operator every 8 hours. Not all Lottery rounds are equal. When a lottery jackpot isn't won, the next round's prize pool will increase; the longer it's been since someone has won the jackpot, the larger the Lottery prize pool will be.

In this contract Only Operator to take the following actions:

• startLottery: A function that start a new lottery round. Changing this lottery round state to Open

• closeLottery: A function that changes this lottery round to Close

• drawFinalNumberAndMakeLotteryClaimable: A function that draws the final number, calculate reward per group, and make lottery claimable

• injectYieldFunds: A function that claims the blast native yield and gas fees,then inject award funds

PythRandomNumberGenerator

This codebase is based off How to Generate Random Numbers in EVM Contracts Using Pyth Entropy a Modern, integrate Pyth Entropy into an EVM Contract to generate on-chain random numbers.

Getting Started

Requirements

• git
  • You'll know you did it right if you can run git --version and you see a response like git version x.x.x
• foundry
  • You'll know you did it right if you can run forge --version and you see a response like forge 0.2.0 (816e00b 2023-03-16T00:05:26.396218Z)

Quickstart

you can run:

forge install
forge build

Usage

Testing

forge test --fork-url "https://sepolia.blast.io"

Test Coverage

forge coverage

and for coverage based testing:

forge coverage --report debug

Compatibilities

• Solc Version: >0.8.19
• Chain(s) to deploy contract to:
  • Blast sepolia