1. Bitcoin is an innovative payment network and a new kind of money.
https://bitcoin.org/en/
2. Corda R3.
https://www.r3.com/corda-platform/
. Accessed 01 Apr 2019
3. Ethereum.
https://www.ethereum.org/
. Accessed 01 Apr 2019
4. Hydrachain.
https://github.com/HydraChain/
. Accessed 01 Apr 2019
5. Hyperledger Fabric.
https://www.hyperledger.org/projects/fabric/
. Accessed 01 Apr 2019