Block height - The block quantity and size on the blockchain (in blocks) on development of the present block Nonce - The transaction number for your from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://socialbraintech.com/story5498125/the-greatest-guide-to-blockchain-explorer-unconfirmed-transaction-https-articlescad-com-the-remarkable-adventurers-in-the-cyber-frontier-grasping-distributed-ledger-instruments-325096-html