As most of CT knows, Flashblocks launched on Base Mainnet 3 days ago. I wanted to share 2 quick learnings after helping build out this feature as one of the engineers:

A great example during this process was @avantis (huge shoutout to them for actively testing flashblocks on testnet!) — they helped surface missing RPCs we hadn’t considered. For example, viem requires eth_getTransactionByHash just to retrieve a receipt.