Block top - The block selection and length from the blockchain (in blocks) on creation of the present block Nonce - The transaction number for your from address (Keep in mind this begins at 0 so a nonce of one hundred would essentially be the one hundred and first transaction https://prbookmarkingwebsites.com/story25247746/what-does-blockchain-explorer-usdt-mean-https-www-multichain-com-qa-user-knotdrop3