As I know bitcoin has about 10K full nodes. And the question is in my mind is that: This number is not huge! If someone has 6K servers, Can control the bitcoin via 51% attack?

I was thinking if bitcoin had millions of nodes everything was ok but 10K is enough? What is the magic here that people trust bitcoin with 10K nodes?

  • 1
    Note that it's not about the number of full nodes but the computing power that can influence such an attack – Cedric Martens Apr 13 '19 at 12:54
  • I know, But that full nodes are not special powerful computers. I know it costs too much but I'm thinking if someone want to destroy bitcoin, It seems it's possible. Just need a few thousands PC's with good GPU. I mean "someone" like Russia, China or... they have that money and power – Fcoder Apr 13 '19 at 13:48
  • 2
    @Fcoder you are confusing 'network full nodes' with 'miners'. Running 10k full nodes has nothing to do with a 51% attack. GPUs are useless when mining bitcoin, specialized ASIC hardware is required. – chytrik Apr 13 '19 at 16:03
  • 2
    A few thousand PCs with GPUs will not even make a dent in the total hashrate. 10000 GPUs, assuming the best available hardware, can hash at around 10 Thash/s. The global hashrate is approximately a million times more than that. – Pieter Wuille Apr 13 '19 at 18:46

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.