Block top - The block number and length from the blockchain (in blocks) on development of the present 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://bookmark-media.com/story20698069/the-definitive-guide-to-explorer-blockchain-ethereum-https-md-chaosdorf-de-xdhzafcotoa3ipvrxixxya