Block top - The block variety and size on the blockchain (in blocks) on generation 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://companyspage.com/story5445932/explorer-blockchain-base-an-overview-https-www-webwiki-ch-cryptoexplorerhub-com