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The lottery dapp typically has a user interface that allows participants to buy lottery tickets using cryptocurrency, view the results of past lotteries, and track the progress of the current lottery.

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BUILT at UR-Hackathon 2.0

giphy

Project-WinWin

Team - NERDS

Contracts-> WinWin.sol(main smart contract)

Problem statement

When we talk about lottery app there is lots of myth most people don't trust the app because of the centralized database and no transparency. They all thought a winner is always a person from the lottery organization. There are several drawbacks to a web2-based lottery application:

  1. Centralization: Web2-based lottery applications are centralized, meaning that they are controlled by a single entity or organization.
  2. Lack of transparency: The lack of transparency in web2-based lottery applications can create distrust among users.
  3. Limited accessibility: Web2-based lottery applications are limited to a specific platform, such as a website or mobile application. This can limit the number of participants who can access the lottery, reducing its reach.
  4. High fees: Web2-based lottery applications charge high transaction fees, which can discourage users from participating in the lottery.
  5. Limited customization: Web2-based lottery applications have limited customization options, which can make it difficult to create a unique and engaging user experience.

Solution

ALL things can be sorted using WEB 3.0 powers The main USP is Hashing with Keccak256. keccak256 computes the Keccak-256 hash of the input. Some use cases are: Creating a deterministic unique ID from an input Commit-Reveal scheme Compact cryptographic signature (by signing the hash instead of a larger input).

Decentralization, Trust and transparency, Accessibility, Low fees: Web3-based lottery Dapps charge low transaction fees, as they do not require intermediaries or third-party services.

Overall, the benefits of web3-based lottery Dapps make them a promising option for creating fair, transparent, and accessible lottery systems. They offer a high level of security, trust, and transparency to users, while also providing a customizable and low-cost solution for developers.

Technology use

Solidity

ethereum

Metamask wallet

Shardeum Libert Testnet 1.0

Shardeum Explorer.

Polygon open track(ETHEREUM)

Result

elrond-network-egld 2023-03-05 (4)

contract Deployment(Shardeum Explorer)(using Shardeum Liberty Network 1.0){SHM}

Trusty

https://explorer-liberty10.shardeum.org/tx/0x0d327b785de269d44d8db022f49cbeed3d0b769ca05ba126a0d649fe16091582

Final WInner

https://explorer-liberty10.shardeum.org/tx/0xf2629fdfef7ffa94879cd014673a27d1e97c5de646504d08aabc1bb3b4a3a009

result

Got A special mention from shardeum Team for shardeum Track.

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The lottery dapp typically has a user interface that allows participants to buy lottery tickets using cryptocurrency, view the results of past lotteries, and track the progress of the current lottery.

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