Interplanetary File System, or IPFS, is an open source project that taps into ideas pioneered by the decentralized digital currency Bitcoin and the peer-to-peer file sharing system BitTorrent. Sites opt in to IPFS, and the protocol distributes files among participating users. If the original web server goes down, the site will live on thanks to the backups running on other people’s computers. What’s more, these distributed archives will let people browse previous versions of the site, much the way you can browse old edits in Wikipedia or old versions of websites in the Wayback Machine.
“We are giving digital information print-like quality,” says IPFS founder Juan Benet. “If I print a piece of paper and physically hand it to you, you have it, you can physically archive it and use it in the future.” And you can share that copy with someone else.
The IPFS white paper provides a deeper view into peer-to-peer systems from which it takes its inspiration. pdf