Block top - The block number and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that 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://bookmarkassist.com/story20354177/not-known-facts-about-blockchain-explorer-unconfirmed-transaction-https-500px-com-p-barrkijrooney