- Дата: 16-09-2022, 15:31
Is there a means round this? Think about that Alice modifications her thoughts about paying Bob and tries to rewrite historical past so that her bitcoin stays in her wallet. If she had been a reliable miner she might solve the requisite puzzle and produce a brand new version of the blockchain. However in the time it took her to take action, the rest of the network would have lengthened the original blockchain. And nodes all the time work on the longest version of the blockchain there may be. This rule stops the events when two miners find the solution nearly simultaneously from causing something more than a short lived fork in the chain. It also stops dishonest. To force the system to just accept her new model Alice would must lengthen it faster than the remainder of the system was lengthening the unique. Wanting controlling more than half the computers-known within the jargon as a "51% attack"-that shouldn't be attainable.