Algorithm 1 Collect cross-chain smart contract A(CCSC-A)

Input: H(user); D; Dn; DATA; Ds; T; AD; CCSC-B; pkp; Y; F; 1:func Certification(H(user)) (D) // Data acquisition module 2:func Hash lock(D)// Data encryption module 3:func Slice(DATA)// Data fragmentation module 4:func Game(Relay chain (node))// Game module 5:func Get(AD)// Storage module