“DEMI Capsule is a browser-based registration service that creates a permanent, blockchain-anchored timestamp of a file's SHA-256 fingerprint without the file ever leaving the owner's device.”
PropositionsOnly the file's fingerprint, title, and owner-supplied details are sent to the Registry, which records the state to the Ethereum blockchain within seconds, making the registration time verifiable independently of the operating company.
ConstraintsRegistration proves existence at a specific moment only, and does not establish authorship, ownership, or the truth of the content.
MechanismsAnyone with the original file can verify its prior existence by recomputing its SHA-256 fingerprint and comparing it against the Registry record and the Etherscan timestamp, while the owner key controls public visibility without altering the underlying record or its blockchain anchor.
BoundariesThe service is built from replaceable commodity parts so that others can reproduce the method with citation, and where AI assistance is requested a Conceptual Core is extracted and made findable through the registry code.
Files fingerprinted by this registration
These files were fingerprinted by the registrant and were never uploaded. The registration time above applies to each fingerprint below: a fingerprint cannot be produced without the file it describes. This record does not establish authorship or ownership of the files named.