This paper describes BigchainDB. BigchainDB lls a gap in the decentralization ecosystem: a decentralized database,at scale. It points to performance of 1 million writes per second throughput,storing petabytes of data,and sub-second latency. The BigchainDB design starts with a distributed database (DB),and through a set of innovations adds blockchain characteristics: decentralized control,immutability,and creation & movement of digital assets.