A file can be copied without leaving its sender. A transferable digital good presents a harder question: can the recipient acquire exclusive effective control while the sender loses the ability to exercise that same control? This programme makes the distinction between information, access and possession its starting point.
The research brings property theory, economics and security engineering together. It examines attested extinguishment of a sender’s control state, the incentives of those who attest to a transfer, and the allocation of responsibility when retained access or hidden copies cannot be ruled out.
Its scope is precise: demonstrable divestment within a stated system and trust boundary. An attestation does not establish that every external copy of information has vanished. The challenge is to identify what is actually scarce, what can be verified and which residual risks require economic incentives or legal accountability.
This is a distinct research programme from Teranode and transaction scaling. Its central concern is the integrity and meaning of possession and transfer, with potential applications to digital goods, transferable access and controlled-use capabilities.