System and method for providing contract support service

Abstract

A server for providing a contract support service communicates with a plurality of contractor terminals, the InterPlanetary File System (IPFS) and a blockchain network, and manages member information for the plurality of contractor terminals. The contract support service provision server acquires audio/video contents including audio/video files in which contract-related audio/video data are stored and metadata for audio/video, in response to a request for contract support from one contractor terminal of the plurality of contractor terminals, generates contract document information corresponding to the contract-related audio/video data, generates a provisional contract content including the generated contract document information and audio/video contents, generates first link information adapted to provide access to the generated provisional contract content and second link information adapted to provide connection with a web page to receive electronic signatures of the plurality of contractor terminals as an input, and transmits the generated first link information and second link information to the plurality of contractor terminals included in the request for contract support. In addition, when a plurality of electronic signatures are input for each contracting party from the plurality of contractor terminals that have confirmed the provisional contract content, contract support service provision server generates audio/video watermarks for the contract content including the provisional contract content and the plurality of electronic signatures, adds the generated audio/video watermarks to the provisional contract content to generate a contract content for storage, encrypts the contract content for storage using an encryption key, and stores the encrypted contract content for storage in a distributed manner using the InterPlanetary File System (IPFS) and the blockchain network.