What is Receipt Paradigm?

A receipt paradigm is a receipt-focused transaction structure built for use with shard chains on the Ethereum Consensus Layer (formerly Ethereum 2.0). The paradigm's intended function is to help increase utility and usability of decentralized finance (DeFi) applications on the Ethereum network. As of early 2021, Ethereum plans to implement a "receipt paradigm" in which each shard chain will generate receipts for its respective internal transactions. Receipts will then be stored in the Beacon Chain's shared memory — available for all other shards to view, but not to tamper with.