Solidity 103

1. ERC20

2. Token Faucet

3. Token Faucet

4. ERC721

5. Dutch Auction

6. Merkle Tree

7. Digital Signature

8. NFT Exchange

9. Chainlink Randomness

10. ERC1155

11. WETH

12. Payment Splitting

13. Linear Release

14. Token Lock

15. Time Lock

16. Proxy Contract

17. Upgradeable Contract

18. Transparent Proxy

19. UUPS

20. Multisignature Wallet

21. ERC4626 Tokenization of Vault Standard

22. EIP712 Typed Data Signature

23. ERC-2612 ERC20Permit

24. 跨链桥

25. 多重调用

26. 去中心化交易所

27. 闪电贷