stuff I wrote when I had time

How to implement Uniswap Permit2 in your protocol

2023-01-12

Usually when interacting with a protocol that is transferring users ERC20 tokens, the user must first approve it by calling approve on the ERC20 token contract. This means that for every new application that user interacts with, he must make 2 transactions (one to approve and the second one to call the smart contract he wants to interact with). This is why a […]

How to get Smart Contract Creation Block Number with NodeJS

2023-01-04

Lets say you have an application that needs to index Smart Contract events. To index past events, you have to first know what blocks you should be looking at. It does not need to be explained, that you should be looking at blocks that were created after the contract was deployed. So you need to […]