Block top - The block selection and duration with the blockchain (in blocks) on creation of the current block Nonce - The transaction variety with the from address (Remember this starts at 0 so a nonce of 100 would really be the a hundred and first transaction submitted by this https://businessbookmark.com/story5918079/the-blockchain-explorer-usdt-trc20-diaries-https-www-demilked-com-author-brokerwhorl5