Block top - The block number and length on the blockchain (in blocks) on generation of the present block Nonce - The transaction number for the from address (bear in mind this begins at 0 so a nonce of one hundred would truly be the a hundred and first transaction https://opensocialfactory.com/story22778546/explorer-blockchain-base-an-overview-https-www-webwiki-nl-cryptoexplorerhub-com