Block top - The block selection and duration of your blockchain (in blocks) on generation 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://bookmarkcitizen.com/story20804504/the-blockchain-explorer-usdt-trc20-diaries-https-md-entropia-de-aifurowaq7oqbm16-zzrcw