Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction amount for that from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://social-lyft.com/story10196453/what-does-blockchain-explorer-usdt-mean-https-list-ly-churchkjeldsen86wpibju