Any literature on CryptoKitties, the iconic blockchain-based collectables game built on non-fungible token contracts, will almost inevitably include commentary on the project’s now infamous congestion of the Ethereum blockchain in late 2017. At the height of its popularity, CryptoKitties accounted for nearly 15% of all Ethereum transactions, crippling network latency and causing both transaction and ‘birthing’ fees to soar. Today, over...