Threat of Quantum computer to Blockchain , Researchers propose Quantum Resistant Ledger (QRL) and Quantum blockchain

Blockchain, is a growing list of records, called blocks, which are linked using cryptography. Blockchains which are readable by the public are widely used by cryptocurrencies. Private blockchains have been proposed for business use.  Blockchain a transformative decentralized digital currency, a secure payment platform free from government interference, is being considered for security of additive manufacturing .