Layer2 相关的背景知识以及分享材料
https://www.youtube.com/watch?v=g26_Duq6nsM
https://balsam-butterkase-bf5.notion.site/How-challange-proof-works-in-Arbitrum-8f4fc2e2401749cd9a9d9e33781af0ff
https://youtu.be/vdT0wf2849c
https://balsam-butterkase-bf5.notion.site/Overview-of-Cannon-796a9e9158fd4b86a515609dc06998a6
https://youtu.be/cny4Hi_RwFA
