Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction range for that from address (bear in mind this begins at 0 so a nonce of 100 would really be the one hundred and first transaction submitted https://setbookmarks.com/story20450173/blockchain-explorer-fundamentals-explained-https-wikimapia-org-external-link-url-https-cryptoexplorerhub-com