Block top - The block number and length with the blockchain (in blocks) on generation of the current block Nonce - The transaction quantity for your from address (Keep in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://bookmarkport.com/story22889570/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-https-articlescad-com-the-remarkable-adventurers-in-the-cyber-frontier-grasping-distributed-ledger-instruments-325096-html