Dark side

With the key attributes of censorship resistance and decentralization, blockchain technology can help to improve transparency and efficiency in many walks of life but this somewhat unregulated nature of this technology means that it can be used by criminals for illegal activities too. For example, compare a scenario where if some illegal content is published over the Internet it can be immediately shut down by approaching the concerned authorities and website service providers but this is not possible in blockchains. Once something is there on the blockchain, it is almost impossible to revert it back. This means that any inacceptable content, once published on the blockchain, cannot be removed. If the blockchain is used for distributing immoral content then there is no way for anyone to shut it down. This poses a serious challenge and it seems that some regulation and control is beneficial in this scenario, but how can a blockchain be regulated? That is another important question...