Block top - The block quantity and size in the blockchain (in blocks) on development of the present block Nonce - The transaction selection with the from address (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://brightbookmarks.com/story20901188/blockchain-explorer-usdt-trc20-fundamentals-explained-https-hedgedoc-digillab-uni-augsburg-de-mshxmk-praykwj94jou11g