Block top - The block number and length of the blockchain (in blocks) on creation of the current block Nonce - The transaction amount to the from address (Keep in mind this begins at 0 so a nonce of one hundred would truly be the a hundred and first transaction https://infopagex.com/story5743665/blockchain-explorer-usdt-trc20-fundamentals-explained-https-codimd-fiksel-info-7obh-70jsduk4-4exx8mba