Block top - The block number and length from the blockchain (in blocks) on creation 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 really be the 101st transaction submitted by this account) https://bookmarksaifi.com/story20544866/explorer-blockchain-base-an-overview-https-www-webwiki-de-cryptoexplorerhub-com