Method and apparatus for selecting distributed consensus node based on proof of nonce

A method for verifying a consensus node in an apparatus for generating a blockchain, comprising:

• receiving a nonce value, a height of a new block, and an address of a first node from the first node that is selected as the consensus node;
• retrieving a final nonce value and a start height, corresponding to the address of the first node, from an elite pool of a second node;
• subtracting the start height from the height of the new block;
• hashing the nonce value from the new block as many times as a result of subtraction;
• and
• comparing a result of hashing with the nonce value received from the first node in order to verify whether the first node is eligible to serve as the consensus node.

An apparatus for generating a blockchain, comprising:

• at least one processor;
• and
• a memory for storing at least one instruction executed by the at least one processor,
• wherein the at least one instruction is executed by the at least one processor such that a nonce is read from a nonce chain of a node, such that an operation is performed on the read nonce and previous height information, and such that a result of the operation is compared with a reference value in order to select the node as a consensus node.