Block top - The block number and size with the blockchain (in blocks) on generation of the present block Nonce - The transaction number for that from address (Remember this starts off at 0 so a nonce of 100 would in fact be the a hundred and first transaction submitted https://active-bookmarks.com/story20350876/helping-the-others-realize-the-advantages-of-blockchain-explorer-one-https-www-folkd-com-submit-cryptoexplorerhub-com