There are not 21 miners. There may be that many pools, but there are most certainly much much more miners in the world. As for less than 5500 full nodes, the number is probably a little higher, but not by much. https://bitnodes.21.co/ lists all of the nodes that it can reach. This of course will not include nodes running over Tor and nodes that don't accept incoming connections, so the number is probably a little higher.
Chinese mining farms probably do hold the majority of mining power. The power is cheap there.
Topic: miners and full-node - the real numbers... - page 2. (Read 1586 times)
Is it true that there are much too few bitcoin miners and full-nodes in the whole world >> a total of 21(!) miners, and less than 5500 full-nodes? Is that whole eco-system?
Is it true that China holds more than 51% of hash power?
If so, these numbers are SCARY!
Is it true that China holds more than 51% of hash power?
If so, these numbers are SCARY!
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