Add study notes for 2025-08-19

AutoBot42 · AutoBot42 · commit 49da605a0a84 · 2025-08-20T03:55:45.000+12:00
diff --git a/w5pand.md b/w5pand.md
@@ -15,6 +15,11 @@ web2->web3
 ## Notes
 
 <!-- Content_START -->
+# 2025-08-19
+
+尝试编写ERC20合约
+尝试继承op标准合约，编写ERC721合约
+
 # 2025-08-18
 
 使用remix在测试网部署和调用合约
