#ApertusFeature Put the proof of existence file hash into the text box to allow users to include additional text, or be able to link the hash to another etching (like the etching of that file) on that blockchain or another, or to attach that actual file for etching. It currently etches the second you choose your file to hash, with no chance to edit or review your choice. Allowing additional text, linking, or attaching, will give the user tremendous leverage across all the chains #LinkAllChains