Table 3.

The Function of interaction API.

Function	Description
Remote computing request	Initiate a request to execute a smart contract in the PDP back-end network and obtain the execution result
Remote storage requests	Initiate requests to perform upload/download of data in the PDP back-end network
Local storage request	Query/store data to the local storage space on the PDP front-end based on data tags
Data trading requests	Initiate a request to execute a data trading contract to the PDP back-end network and obtain the execution result
Utility requests	Provide to meet the operational needs of the web front-end, such as installing web front-end requests, obtaining user pseudonym public key requests, etc