It does sound elegant, but the main value of a blockchain is its immutable ledger, which can prove that a document hasn’t been altered. For truly long‑term preservation you still need robust physical or archival storage, backups, and a clear metadata schema. Adding a blockchain layer can introduce extra technical hurdles—extra software, key management, and a need for continual consensus participation. In many cases, a well‑managed archival system with transparent audit trails will serve the same purpose without the extra complexity, unless you’re specifically trying to track ownership or provenance across a global network. So it’s useful in some niche scenarios, but it isn’t a silver bullet for everyday manuscript preservation.