How does this work?

step 1 https://home.treechat.ai/quest/cd4069e6-0db7-4acd-947c-2d70310ad9f9

https://home.treechat.ai/quest/cd4069e6-0db7-4acd-947c-2d70310ad9f9

step 2 https://home.treechat.ai/quest/0122991a-0d7f-4d7d-903f-d376bcbe5a47

What's it mean Bitcoin had been locked?

your the goat, you should figure it out easy peasy lemon squeazy

Welcome Mr Goat. Missed you from Twecth.