norah1499

My public address is 0x4525Ac33F4200b52B1a028Bb5affC2aE88d59Bf2

norah1499

// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

//CPMM : Constat product market maker
//This contract implemets CPMM for fix pair of 2 ERC20 Tokens
//Does not account for fees

contract CPMM{

norah1499

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.6;

//This is lottery smart contract
//It will have players and owners
//Players enter the lottery by paying the lottery ticket price
//Owner recieves its cut from the players entry ticket price
//The rest of the amout consist of pot money
//Then Winnner is randomly pick who wins the entire pot money

norah1499

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.6;

//This smart contract will take list of owners and the no of signatures needed to confirm the
//the excution of the transcation, which were submitted by one of them only
//Idea is, say in we have 3 onwers and atleast 2 signature are required to execute any transcation.
//One owner will submit the transcation then it will have to wait until atleast one owner of the 
//confirm to allow the spending

contract MultisigWallet{

norah1499

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.6;

//This smart contract escrow for seller and buyer
//Idea is seller will intiate transfer of goods once the buyer has lock the funds in smart contract.
//So first buyer will lock the funds, then wait for goods to arrived, upon finding all well,
//He/she will confirm then the fund will be available to withdraw to seller
//Limitation of the following imlementation is the at a time buyer with particular seller can engage in only in single transaction
//This limitaion can be overcomed by tracking for each transcaton with uinique id through entire journey

norah1499

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.6;

//This contract locks users fund for duration of week
contract TimeLock{

    //Mapping to store the amount of money deposited by user
    mapping (address => uint) public deposits;

    //Mappig to keep track of the time left until the user can withdraw