Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range with the 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://livebookmarking.com/story20287477/the-blockchain-explorer-usdt-trc20-diaries-https-notes-io-ww2s8