BTC2 is the forked coin of BTC, produced in the New York consensus in May 2017, in the form of SW (isolated Witness) and 2M. Previously traded on the exchange under the name BT2.
The BTC2's mining method changed from the original ASIC mining to GPU mining, and the mining algorithm was modified to completely eliminate the ASIC's ProgPOW algorithm. The block size is still 2M, supports SegWit, and joins the community's strong call for two-way replay attack protection. The new Bitcoin contract was successfully forked and stabilized on December 27th, 2017, bitcoin height 494784.
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