Method For Registration Of Data In A Blockchain Database And A Method For Verifying Data

A method for registration of data in a blockchain database, in which database transactions are constructed of standard data containers which may have a fixed size, in a system comprising one or more storage nodes for storing at least part of the blockchain database, one or more approval nodes for approving transactions in said blockchain database and a first computer for generating transactions in said blockchain database, said computer having access to said blockchain database and having access to a first private key, comprising the following steps:

• a) providing a first set of data, relating the contents of a digital file;
• b) providing a second set of data, relating to the origin of said digital file;
• c) generating a third set of data by merging a header, the first set of data, the second set of data and optionally a suffix into a data frame, starting with the header, followed by the first set of data, followed by the second set of data and optionally ending with the suffix, wherein the header contains information about the size of the first set of data, while the size of the suffix is adjusted such that the size of the data frame is a multiple of the size of the standard data container used in said blockchain database;
• d) dividing the third set of data into an integer number N of parts of equal size, said size corresponding to the size of the standard data container used in said blockchain database;
• e) generating—by said first computer or an intermediary computer connected to the first computer and said one or more of the approval nodes—a single blockchain database transaction for all the N parts obtained in the step d), signing the transaction by said first private key and sending the transaction and a first public key matching the said first private key to said one or more of the approval nodes for approval;
• f) obtaining approval for the transaction from said one or more of the approval nodes;
• g) registering the transaction approved in the step f) in a block of the blockchain database with the timestamp of registration by the one or more storage nodes.