Block top - The block selection and length of the blockchain (in blocks) on development of the current block Nonce - The transaction number to the from address (Remember this begins at 0 so a nonce of one hundred would in fact be the a hundred and first transaction submitted https://bookmarklinx.com/story20679147/a-review-of-blockchain-explorer-usdt-https-vuf-minagricultura-gov-co-lists-informacin-20servicios-20web-dispform-aspx-id-11784754