Julian Cislo

Lotto Balls is a smart contract slot machine and lottery game utilizing Chainlink VRF to provide secure random numbers where I designed, developed, tested, and launched the front end with React and back end using Solidity Smart Contracts.

The game's goal is to select eight digits from 1 to 8 each and then attempt to match them with a randomly generated set. The more digits match, the greater the prize. The protocol also contains a native fungible token that is minted as a prize and enables an alternative way to play the game. The game is live on Polygon and requires MetaMask pointed at the polygon network to access the application.

As a hobby, I enjoy developing various bots to perform on-chain arbitrage, liquidations, and other potentially profitable tasks and my preferred toolset for development is Node.js for monitoring scripts, Web3.js for connections to the blockchain, and Truffle and Solidity for all smart contract needs.

Some bots, such as single-protocol arbitrage or NFT-game automation, are simple because they only require a monitoring script and direct interaction with existing protocols. In other cases, like multi-protocol arbitrage and liquidations, I have written custom smart contracts to combine multiple on-chain actions into single transactions. Common design patterns include using flash loans or flash-like designs to integrate various function calls into a single atomic action. For most automation tasks, fast and reliable access to a node is necessary; therefore, I opt to run my blockchain nodes locally to bypass public RPC rate limits.

I have experience operating nodes on Ethereum, Avalanche, Harmony, Polygon, Optimism, Binance Smart Chain, and Fantom.

Rentable is an NFT rental platform enabling users to rent out their NFTs to borrowers for a fee. To rent an available NFT, the borrower must first put down collateral and pay a fee to the owner to receive the NFT. If the token is not returned on time, the collateral is returned to the NFT owner. This project was developed at the ETHToronto hackathon and constructed in under 24 hours.

Caesar's Temple is a Web 3.0 game universe based on Greek and Roman mythology featuring role-playing elements, including combat, resource gathering, and crafting, among other things, and this game is built entirely of smart contracts and utilizes VRF to bring secure randomization in a decentralized system. It also features my unique experimental token-omic systems and will follow a modular release schedule.