Block top - The block number and length in the blockchain (in blocks) on development 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://pr1bookmarks.com/story20731000/new-step-by-step-map-for-blockchain-explorer-unconfirmed-transaction-https-www-hulkshare-com-circledrop4