This document discusses BigchainDB, a scalable blockchain database, and the potential for blockchain applications to scale up and interconnect through protocols like Interledger. It summarizes BigchainDB's approach of applying techniques from distributed databases to blockchains to achieve high throughput and scale. It also outlines Interledger's goal of connecting different blockchains and ledgers to enable payments across platforms through the use of escrow and receipts to secure transfers between ledgers.