https://github.com/captain-woof/lottery-dapp

This DApp allows starting a lottery game, which players can then join (upto a specified limit), stake their entry fees, and the winner takes all the stake.
https://github.com/captain-woof/lottery-dapp

chainlink-vrf dapp graphql solidity the-graph typescript

Last synced: 3 days ago
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This DApp allows starting a lottery game, which players can then join (upto a specified limit), stake their entry fees, and the winner takes all the stake.

• Host: GitHub
• URL: https://github.com/captain-woof/lottery-dapp
• Owner: captain-woof
• Created: 2022-04-17T16:02:43.000Z (over 2 years ago)
• Default Branch: master
• Last Pushed: 2022-04-18T11:16:31.000Z (over 2 years ago)
• Last Synced: 2024-11-08T05:33:32.550Z (about 2 months ago)
• Topics: chainlink-vrf, dapp, graphql, solidity, the-graph, typescript
• Language: Solidity
• Homepage:
• Size: 221 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# LOTTERY DAPP

This DApp allows starting a lottery game, which players can then join (upto a specified limit), stake their entry fees, and the winner takes all the stake.

**Deployed on Polygon: [0x765e1309F7EEDc3eA5009b359f82b4A5e47135ed](https://mumbai.polygonscan.com/address/0x765e1309F7EEDc3eA5009b359f82b4A5e47135ed)**

## Description

Like you read above, the game involves players participating in a lottery. The contract uses **Chainlinks's VRF (v1)** to randomly then choose a winner, and award all the collected entry fees combined.

The Graph protocol is used to index all the games that are played, and are queryable at "[https://api.thegraph.com/subgraphs/name/captain-woof/lottery-dapp-v1](https://api.thegraph.com/subgraphs/name/captain-woof/lottery-dapp-v1)".

[Use the playground](https://thegraph.com/hosted-service/subgraph/captain-woof/lottery-dapp-v1?selected=playground) to try out the Graph on the contract.