Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction quantity for the from address (Keep in mind this starts off at 0 so a nonce of a hundred would really be the 101st transaction submitted by https://totalbookmarking.com/story20638520/what-does-blockchain-explorer-usdt-mean-https-www-multichain-com-qa-user-knotdrop3