Block top - The block number and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety to 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://socialrator.com/story11931654/explorer-blockchain-things-to-know-before-you-buy-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers