Scalable decentralized data market protocol

New protocol implement by substrate. -> (https://github.com/thashimoto1998/substrate-pallet-DIDOffchainTrade)

*Specification is almost the same to previous protocol.

Test

  1. Install node v10: https://nodejs.org.
  2. Install the node dependencies in the local node_modules folder.
npm install
  1. Install truffle and ganache-cli(sudo permission might be needed).
npm install -g truffle ganache-cli
  1. Run ganache-cli
ganache-cli -l 8000000
  1. Test keeper-layer2 contracts.
npm run test