Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction selection 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://binksites.com/story10678395/not-known-details-about-blockchain-explorer-usdt-trc20-https-www-tarauaca-ac-gov-br-profile-robleswcifuentes23175-profile