Re:Proof-Of-Work is a Decentralized Clock
by SilasX on Tuesday April 17, 2018 @04:57PM
(#16862256)
The protocol says to only accept valid blocks.
Part of being a valid block is "only spend BTC you have". B-to-A-first violates that.
Other miners would reject such a block as invalid and refuse to propagate it. Even if some did, the vast majority would not consider it valid, and the next published block (new transactions + proof of work) would extend from a block that didn't have that transaction in it.
Part of being a valid block is "only spend BTC you have". B-to-A-first violates that.
Other miners would reject such a block as invalid and refuse to propagate it. Even if some did, the vast majority would not consider it valid, and the next published block (new transactions + proof of work) would extend from a block that didn't have that transaction in it.