https://medium.com/engineering-ideas/blockchain-is-not-decentralised-e098ce4f2a45
https://medium.com/hackernoon/guess-what-bitcoin-isnt-decentralized-ecab67de653d
https://medium.com/@kaistinchcombe/decentralized-and-trustless-crypto-paradise-is-actually-a-medieval-hellhole-c1ca122efdec