This week’s challenges were quite open-ended and interesting. The first challenge was about multisig wallet. Learnt about meta transactions and off-chain signature-based shared wallet amongst different signers. In general, the transactions are processed on-chain. But this being a shared wallet, we used off-chain Signature-Based multi sig-wallet. Once the packed hash(packed hash (bytes32) is a way to represent a specific function call with its parameters as a single hash value) is generated, i...