Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range for that 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://geniusbookmarks.com/story20253871/not-known-facts-about-blockchain-explorer-unconfirmed-transaction-https-list-ly-churchkjeldsen86wpibju