Manually calculate the IPFS CID v2

[ovanwijk]

Sha256 content hashing in solidoty

Hi! For those who might find it interesting: I wrote a small smart contract that wraps any content from a single chunk into a ipfs-style hash. It also supports hashing folders with different files. I wrote this because I want to be able to validate the content of a small ipfs-file on chain. Given this file is in a larger folder structure. It is a very crude implementation and suits my needs for now but someone might find it useful! Prior discussion about this topic: Manually calculate th…