Block top - The block number and length on the blockchain (in blocks) on generation of the present block Nonce - The transaction selection for the from address (bear in mind this begins at 0 so a nonce of one hundred would basically be the 101st transaction submitted by this https://socialdosa.com/story10481829/explorer-blockchain-base-an-overview-https-www-webwiki-co-uk-cryptoexplorerhub-com