en PBN version: https://planb.academy/ja/courses/biz205-7df81d1e-4b74-4729-9a67-bc9c11bff858 en github version: https://github.com/PlanB-Network/bitcoin-educational-content/blob/dev/courses/biz205/en.md ja github version: https://github.com/PlanB-Network/bitcoin-educational-content/blob/dev/courses/biz205/ja.md
en PBN version: https://planb.academy/ja/courses/biz205-7df81d1e-4b74-4729-9a67-bc9c11bff858
en github version: https://github.com/PlanB-Network/bitcoin-educational-content/blob/dev/courses/biz205/en.md
ja github version: https://github.com/PlanB-Network/bitcoin-educational-content/blob/dev/courses/biz205/ja.md