Published:   30-Nov--0001
(a) A group of miners who combine their computing power to increase their chances of successfully adding blocks to the blockchain network and earning rewards
(b) A digital signature used to verify transactions
(c) A unique identifier for a transaction on the blockchain
(d) A public address for receiving cryptocurrency
Answer:
A group of miners who combine their computing power to increase their chances of successfully adding blocks to the blockchain network and earning rewards