What’s clear is that a lot of companies looking to use the blockchain are not really wanting a blockchain at all, but rather IT upgrades to their particular industry. This is all well and good, but using the word “blockchain” to get there is dishonest and oversellin…
… simply refuse service to malicious users, which would be very easy to do in a centralized service. However, unlike a centralized service, refusing service is difficult because no single entity has the authority to kick anyone out. The blockchain has to be impartial and enforce the rules defined by the software. If the rules are …