Start today. Pick three URLs that matter to you. Hash them. Timestamp them on a public blockchain (Ethereum or Bitcoin via OpReturn). Pin the content to IPFS. Share the hashes publicly. That small act is the seed of an irreversible archive.
Not for large files, but for metadata: (hash, timestamp, submitter_signature, previous_block_hash) . This forms an irreversible chain. Any attempt to retroactively alter an entry would break the chain. irreversible internet archive
: Massive collections, from Holocaust survivor portraits to thousands of documents on the history of typewriters , are saved from physical or digital decay. Start today