Educational Byte: Why Blockchains Can Be Censored and Manipulated? | HackerNoon
Briefly

The main goal of creating decentralization-oriented systems, like cryptocurrencies, was never to make people rich overnight. Instead, they're aiming to make people free immediately.
Blockchains still have a potential degree of censorship and manipulation due to their internal workings, which involve several steps and middlemen between transactions.
Common systems like Proof-of-Work or Proof-of-Stake integrate middlemen known as miners or 'validators', who can manipulate or block transactions due to their power.
At the network layer, censorship might happen by restricting who can join or communicate within the peer-to-peer network, impacting the decentralized nature.
Read at Hackernoon
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