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 (bear in mind this starts at 0 so a nonce of 100 would really be the a hundred and first transaction submitted https://thesocialintro.com/story5844026/the-greatest-guide-to-blockchain-explorer-unconfirmed-transaction-https-www-instapaper-com-p-16864836