InterPlanetary File System (IPFS) Distributed Hash Tables (DHTs), BitTorrent, Git, and Self-certified Filesystems - are Distributed Hash Tables (DHTs), BitTorrent, Git, and Self-certified Filesystems SFS) file storage and content distribution network protocol combined with blockchain. The combined advantages of these systems give it significant features: 1. Permanent, decentralized storage and sharing of files (storage DHTs in blockchain mode); 2. Peer-to-peer hypermedia: P2P stores various types of data (BitTorrent); 3. Versioning: file modification history can be traced (Git-Merkle DAG Merkel-directed acyclic graph); 4. Content addressable: Files are identified by generating separate hashes from their contents, not by where they are saved. Only one file with the same content exists in the system, saving storage space