Blockchain likes an open ledger, which records all transactions since the birth of Bitcoin. Anyone can download and check this blockchain. A block corresponds to a page on this ledger.
If there is any problem, please contact with operation staffs:
1 ) Telegram : Juliana Mei (English&Chinese )
2 ) Telegram : Jinglong Cui (Chinese & Korean )
Thanks for your support!
Happy mining in BTC.com!