Mutable digital asset storage units for verifying other storage units in a decentralised peer-to-peer storage network

A system of managing storage units representing digital assets in a decentralized repository arranged in a peer-to-peer network comprising a plurality of peer computing systems, the decentralized repository having a graph structure in which the storage units represent nodes of the graph structure, the system comprising:

• a computer at least configured to:
• select at least one storage unit hosted on a first peer computing system, where the selection is carried out using selection criteria rules encoded in software;
• calculate a path between the at least one storage unit and a first anchor storage unit;
• store a description of the path through the network between the at least one storage unit and the first anchor storage unit;
• perform a cryptographic processing function taking as inputs information related to a current version of the first anchor storage unit, information related to the selected at least one storage unit, and information relating to the path to generate a result as an output of the cryptographic processing function, where the first anchor storage unit is hosted on a second peer computing system;
• and
• store the result into a new version of the first anchor storage unit;
• wherein the selected at least one storage unit comprises a second anchor storage unit.