Blockchain-Enhanced Fair Task Scheduling for Cloud-Fog-Edge Coordination Environments: Model and Algorithm

Algorithm 4

Class of TrustBlock.

	TrustBlock {
(1)	String hash;
(2)	String previousHash;
(3)	String merkleRoot;
(4)	long timeStamp;
(5)	int nonce;//the proof of miners
(6)	double trust;//the integrated trust of a certain node
(7)	TrustBlock(String previousHash) {//the basic structure of a trust block
(8)	this.previousHash = previousHash;
(9)	this.timeStamp = new Date().getTime();
(10)	this.hash = calculateHash(); }
(11)	void mineBlock() {
(12)	merkleRoot = StringUtil.getMerkleRoot(transactions);
(13)	while(!hash.substring(0, difficulty).equals(target)) {
(14)	nonce ++;
(15)	hash = calculateHash();
(16)	}
(17)	}
	}