 that aims to turn BTC into a centralized, permissioned system. Note that the ChainAnchor team has stated that they don't plan to actually do this, but it's up to you to decide whether to believe them.

bitcoin

What are the Centralization Risks in Bitcoin?

Best

Probably some system like [ChainAnchor](https://petertodd.org/2016/mit-chainanchor-bribing-miners-to-regulate-bitcoin) that aims to turn BTC into a centralized, permissioned system. Note that the ChainAnchor team has stated that they don't plan to actually do this, but it's up to you to decide whether to believe them.