BlockChain Signer app for iPhone and iPad

This app is made by Chain.Cloud company.

BlockChain Signer can:
● Add your document to BlockChain. That can be useful if you want to generate timestamp for your document that will last forever. And that unique timestamp can never be removed.

Treat BlockChain technology as a single distributed database with no remove or modify functionality.

Imagine:
1) Yove written TV-series plot;
2) You want to generate timestamp for this document as a proof that you are the plot creator;
3) Timestamp is then added to BlockChain; Plot is never transmitted to our servers so that we have no idea what contents the document has;
4) Now your ownership can be verified.

To verify ownership and a timestamp of your TV-series plot:
1) You need a full copy of the document (photo/photos);
2) If your TV-series plot is lost -> no one will be able to restore it. Documents are never transmitted to BlockChain, only their hashes are;
3) If you will change even single character in the plot -> you will not be able to verify it against old plot version. You need to add ALL versions of your plot in order to verify them later.