BCH developer Jiang Jiazhi said on Weibo today that Bitcoin Core (BTC) and Bitcoin ABC both use the MIT License. MIT is as loose as the BSD license agreement, and only retains copyright without any other restrictions. The open source community is the greatest human community, and CSW is insulting the open source community. Earlier, CSW claimed in its latest blog post: "As the sole creator of Bitcoin, I have full rights to Bitcoin. People can use software and make other versions. But they are not authorized to change the protocol using the underlying database. Bitcoin Core ( (BTC) and Bitcoin ABC (BCH) are trying to use my database without authorization. Instead of seeking permission, they are trying to attack me and insult me. I will use BTC and BCH legally. "