5x? no, it should be absurdly more, 25x at least
#SwiftSync is a neat idea. parallelizable bitcoin validation using a hash aggregate. 5.28x speedup (that's a lot!)
https://gist.github.com/RubenSomsen/a61a37d14182ccd78760e477c78133cd#regarding-the-hash-aggregate
https://delvingbitcoin.org/t/swiftsync-speeding-up-ibd-with-pre-generated-hints-poc/1562/12
