satoshi didn't creat blockchain, because blockchain was created 17 years before Bitcoin was born. and with name Time-stamp. time-stamp was created in 1991 by Stuart Haber and W. Scott Stornetta. but not adopted en masse. because it has a common problem of byzantium. and in 2008 satoshi solved this problem with alternative solutions. namely through proof-of-work created by Satoshi, then Bitcoin was born as a verification tool on the blockchain. so make no mistake. satoshi is not creator of the blockchain. but only perfecting time-stamps (now blockchain) that have common problems and solve them with bitcoin.
The title of your post is very misleading. Anyway thanks for this enlightenment, but what you should understand is that Satoshi solved the challenge the pioneers of blockchain were facing. Moreover Satoshi blockchain is no way similar to the initial idea of what time-stamp was intend to be. Blockchain was based on the idea of peer to peer connection between computers on the torrent network.