FileCoin

Filecoin is an open-source, public, cryptocurrency and digital payment system intended to be a blockchain-based digital storage and data retrieval method.[1][2][3][4] It is made by Protocol Labs and builds on top of InterPlanetary File System (IPFS). https://en.wikipedia.org/wiki/Filecoin

https://filecoin.io/

Aug'2017: successfully raised $205M+ from 2,100+ investors

https://arstechnica.com/information-technology/2017/08/investors-poured-millions-into-a-storage-network-that-doesnt-exist/