Abstract: A non-transitory computer readable storage medium has instructions executed by processors to receive an original collection of symbols at a first machine operative as a coding machine in a network. The original collection of symbols is conveyed via the network from a second machine operative as a client machine in the network. A single use coding function is applied at the first machine to the original collection of symbols to form a new collection of symbols. The first machine subsequently applies a different single use coding function to the original collection of symbols to form a different new collection of symbols recoverable as the original collection of symbols. Encryption keys associated with a user of the client machine are formed and conveyed via the network to a client wallet on the second machine. The new collection of symbols is encrypted to form a recoded encrypted symbol file.

Abstract: A non-transitory computer readable storage medium has instructions executed by a processor to receive an original collection of symbols. A single use coding function is applied to the original collection of symbols to form a new collection of symbols. Encryption keys associated with a user are formed. The new collection of symbols is encrypted to form a recoded encrypted symbol file stored at a network accessible memory location. A distributed ledger entry with a data control signature is formed using the single use coding function encrypted with a private key. The distributed ledger entry is written to a distributed ledger. The distributed ledger entry is accessed. The recoded encrypted symbol file is read from the network accessible memory location. The data control signature and a symmetric key are used to convert the recoded encrypted symbol file to the original collection of symbols.

Abstract: A non-transitory computer readable storage medium has instructions executed by a processor to receive an original collection of symbols. A single use coding function is applied to the original collection of symbols to form a new collection of symbols. Encryption keys associated with a user are formed. The new collection of symbols is encrypted to form a recoded encrypted symbol file stored at a network accessible memory location. A distributed ledger entry with a data control signature is formed using the single use coding function encrypted with a private key. The distributed ledger entry is written to a distributed ledger. The distributed ledger entry is accessed. The recoded encrypted symbol file is read from the network accessible memory location. The data control signature and a symmetric key are used to convert the recoded encrypted symbol file to the original collection of symbols.

Abstract: The invention discloses a system for marking and identifying an object comprising at least one bio-mineralised structure having a mean maximum diameter of less than 500 ?m distinctively associated with the object. Identifying means are provided to identify the bio-mineralised structure associated with the object and provides a data output regarding the bio-mineralised structure which can be interpreted against a database, thereby providing information on the object. The invention extends to a method of marking and identifying an object utilising the aforementioned components.