Block top - The block selection and length of the blockchain (in blocks) on creation of the current block Nonce - The transaction variety with the from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://onelifesocial.com/story5612039/explorer-blockchain-things-to-know-before-you-buy-https-gaiaathome-eu-gaiaathome-show-user-php-userid-1577569