Block top - The block selection and duration of your blockchain (in blocks) on creation of the present block Nonce - The transaction number for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://bookmark-vip.com/story20586419/not-known-details-about-blockchain-explorer-usdt-trc20-https-www-orkhonschool-edu-mn-profile-coxqonpallesen82836-profile