Block top - The block amount and length in the blockchain (in blocks) on development of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://bookmarkusers.com/story20262708/5-essential-elements-for-blockchain-explorer-ethereum-https-forum-issabel-org-u-optionray7