Block top - The block quantity and size on the blockchain (in blocks) on creation of the current block Nonce - The transaction quantity with 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://bookmarkpressure.com/story20758652/explorer-blockchain-tron-an-overview-https-notes-io-ww2s8