Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction quantity for your from address (bear in mind this begins at 0 so a nonce of one hundred would truly be the a hundred and first transaction https://icelisting.com/story21554108/not-known-details-about-blockchain-explorer-usdt-trc20-https-www-multichain-com-qa-user-knotdrop3