[series] Blockchain

[ambersun1234]

• [x] hardhat
  • [x] unit test #11
• [x] intro
  • [ ] consensus #1
  • [x] transaction #1
  • [ ] scaling #1
• [ ] erc20
  • [x] atomic operation #12
• [ ] consensus
• [ ] ipfs
• [x] transaction
  • [ ] consensus #1
  • [ ] erc20
• [x] scaling
  • [x] intro #1
  • [x] transaction #1
• [x] wallet