From this process of codification of trust, and returning to the context of Ostrom’s principles,               an affordance regarding interoperability in CBPP communities can be envisioned. In           technical terms, interoperability refers to the property of a system to operate with other              systems through a series of interfaces. Blockchain provides affordances to increase the            degree of collaboration not only through the generation of interfaces, but also by providing a               full communal infrastructure: a shared decentralised database. This affordance for the           codification of trust relying on a communal infrastructure allows us to envision potentialities             at several levels. Firstly, and in connection with the 7​th and 8​th of Ostrom’s principles, to                facilitate internal interoperability among the different groups or nodes that form part of CBPP              communities, or the multiple layers of nested enterprises in Ostrom’s terms. Thus, and             returning again to our previous example of a community network, with local nodes in Madrid               and Barcelona, one can envision artefacts designed to facilitate the governance of CBPP             communities in the form of different locally-shaped platforms. These platforms could be            autonomously governed by the participants who belong to each of the nodes, but             interoperate between them and/or with a federal platform at a broader level. Thus, the              process of codification of trust would not simply refer to the individuals and their atomic               interactions. Instead, it could include the agreements arranged between the nodes that form             part of the community, fostering the capacity of these communities to scale up some of their                self-organisational processes, as in the example of the collaboration of networks. 
 
Secondly, a blockchain as a common database infrastructure generates affordances for           interoperability beyond the boundaries of a particular CBPP community. In the context of             governance, this affordance for codification of trust could be envision