Based on Consortium Blockchain to Design a Credit Verifiable Cross University Course Learning System

Algorithm 1

Chaincode used for initialization.

(1)	type Chaincode struct {
(2)	}
(3)	type Teacher struct {
(4)	Name string ‘json:”name”’
(5)	University string ‘json:”university”’
(6)	Course string ‘json:”course”’
(7)	}
(8)	type Student struct {
(9)	Name string ‘json:”name”’
(10)	University string ‘json:”university”’
(11)	Hash string ‘json:”hash”’
(12)	Grade int ‘json:”grade”’
(13)	Credit int ‘json:”credit”’
(14)	}
(15)	func (t ^∗Chaincode) Init(stub shim.ChaincodeStubInterface) peer.Response {
(16)	return shim.Success(nil)
(17)	}
(18)	func (t ^∗Chaincode) Invoke(stub shim.ChaincodeStubInterface) peer.Response {
(19)	function, args: = stub.GetFunctionAndParameters()
(20)	if function = = “CheckCourse” {
(21)	return t.CheckCourse(stub, args)
(22)	} else if function = = “LearnCourse” {
(23)	return t.LearnCourse(stub, args)
(24)	} else if function = = “WorkUpload” {
(25)	return t.WorkUpload(stub, args)
(26)	} else if function = = “AddGrade” {
(27)	return t.AddGrade(stub, args)
(28)	} else if function = = “CheckStudent” {
(29)	return t.CheckStudent(stub, args)
(30)	} else if function = = “AwardCredit” {
(31)	return t.AwardCredit(stub, args)
(32)	}
(33)	return shim.Error(“Invalid Smart Contract function name. “)
(34)	}