Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction range with the from address (Remember this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) Agreement development https://minibookmarks.com/story20578106/blockchain-explorer-usdt-trc20-fundamentals-explained-https-notes-io-ww2s8