Candidate Block

Candidate block’s are temporary blocks miner’s assemble on their quests to claim block rewards. Whenever transactions are broadcast on the bitcoin network, the miners start to collect and group the unconfirmed transactions. The miners then begin hashing the information until they eventually produce the merkle root.

The process of hashing is the converting of data into the strings of text through a complex mathematical function. The miners then hash together the nonce, the previous block’s hash, and the root hash of the new transaction data to form candidate blocks. The miners then repeatedly hash this combination of information, using different nonces each time, until a miner finds the valid block hash and obtains the block reward.

Further Reading

How often does a typical miner refresh their candidate block?