jm !Û.x1 <´Ûå3maÙó .;.çÞÿ:LGreat point that is often missed. Anyone can chain blocks of data together. PoW is what makes this unique, trustworthy, and immutable.
https://whatsonchain.com/tx/af5b566e1a6c6af9f001c33fc73fb6c1448e33176bf6c742f6677587387b983f