Rapchan

flash-swap-arbitrage-bot. Smart Contract BOT code, running on Ethereum Blockchain, watching for and executing profitable arbitrage opportunities using flash loans and flash swaps.

hyperledger-supply-chain. Food supply chain is a Hyperledger blockchain based solution which solves the tracking and tracing of food products in the supply chain so that any product can be traced back to its roots.

escrow-service. A Smart Contract implementing the escrow blockchain design pattern. Written in Solidity and deployed in the Ethereum network.

nft-token-factory. Factory Blockchain Pattern to create Non-Fungible Token (NFTs) utilizing ERC-721 Standards.

hyperledger-car-insurance. You've been in a car accident and need to make a claim. The following project helps you understand the process used by FSRA, the Financial Services Regulatory Authority of Ontario, and lead you to the best possible outcome through the use of a hyperledger fabric approach.

stop-loss-bot. A stop-loss bot that will monitor Ethereum prices and sell your crypto wallet balance for a stable coin when a threshold is trigged.

ethereum-evm-assembly. Solidity program done with with "non-functional" assembly expressions as swapN, dupN, add, sub, mul, and exp to compute a simple function.Test case: Evaluating f(5,6) should return 3993.

Advanced-Smart-Contracts. Geth, Truffle,Drizzle web3.js,ethers.js, smart contract patterns and solidity assembly

smartcontract-security-audity. Smart contract security auditing is a thorough analysis of a blockchain applications’ smart contracts in order to correct design issues, errors in the code, or security vulnerabilities.

ethereum-boilerplate. The ultimate full-stack Ethereum Dapp Boilerplate which gives you maximum flexibility and speed. Feel free to fork and contribute. Although this repo is called "Ethereum Boilerplate" it works with any EVM system and even Solana support is coming soon! Happy BUIDL!👷‍♂️

u-exchange. 🦄 An open source interface for the Uniswap protocol

everycoincounts. TypeScript

server-signed-transactions. Server signed blockchain transactions utilizing web3.js - Ethereum JavaScript API.

oracle-with-blockchain. This application will put the data into a smart contract that can access the oracle smart contract to access the off-chain data.

Smart-Contract-Essentials. Contract-contract interaction, Develop and Deploy Simple and Token-based smart contract, Tokeneconomics, testing Framework

green-energy-tracker. Collaboration project between blockchain developers to create a Green Energy Tracking System based on blockchain which would help to track carbon footprint of companies and give them possibility to compensate it by purchasing green energy which is tied to the GET (Green Energy Token).

minifabric. Do fabric network the right and easy way.

blockchain-toolchain. Toolchain templates demonstrating how to develop with the IBM Blockchain platform

logspout. Log routing for Docker container logs

GBEventListener. JavaScript

AleRapchan. I’m Alexandre Rapchan, a Brazilian developer living in Toronto CA who loves tech and innovation. I'm interested in utilizing my analytical and problem-solving skills by designing and implementing decentralized applications (dApps).

react-app-gbc. react-app-gbc for heroku

generator-fabric. Yeoman generator for Hyperledger Fabric

opensea-creatures. JavaScript

interledger-protocol-interface. Interledger is working towards a more equitable and creative global society through an open payments network in which anyone can seamlessly earn, share, buy, sell, and trade with anyone else in the world.

ipfs-and-blockchain. Storing data in IPFS (InterPlanetary File System) and the file's hash in the blockchain utilizing IPFS HTTP client library.