Views and View Addresses for Secure Asset Transfer

With increasing use of DLT (distributed ledger technology) systems, including blockchain systems and networks, for virtual assets, there is a need for asset-related data and metadata to traverse system boundaries and link their respective business workflows. Core requirements for such interoperation between systems are the abilities of these systems to project views of their assets to external parties, either individual agents or other systems, and the abilities of those external parties to locate and address the views they are interested in. A view denotes the complete or partial state of a virtual asset, or the output of a function computed over the states of one or more assets, or locks or pledges made over assets for internal or external parties. Systems projecting these views must be able to guard them using custom access control policies, and external parties consuming them must be able to verify them independently for authenticity, finality, and freshness. The end-to- end protocol that allows an external party to request a view by an address and a DLT system to return a view in response must be DLT- neutral and mask the interior particularities and complexities of the DLT systems. The view generation and verification modules at the endpoints must obey the native consensus logic of their respective systems.