Hyperledger is one such project: https://www.hyperledger.org/ https://www.hyperledger.org/ (mostly the marketing fluff) and https://github.com/hyperledger/fabri

Hyperledger is one such project: https://www.hyperledger.org/ https://www.hyperledger.org/ (mostly the marketing fluff) and https://github.com/hyperledger/fabric https://github.com/hyperledger/fabric