Block top - The block amount and length on the blockchain (in blocks) on development of the current block Nonce - The transaction number with the from address (bear in mind this begins at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://livebackpage.com/story6064126/not-known-details-about-blockchain-explorer-usdt-trc20-https-coveruncle7-werite-net-blockchain-explorers-the-key-to-comprehending-copyright-transactions