Block height - The block amount and size on the blockchain (in blocks) on generation of the present block Nonce - The transaction number for the from address (bear in mind this starts at 0 so a nonce of 100 would truly be the 101st transaction submitted by this account) https://socialmediatotal.com/story5446625/new-step-by-step-map-for-blockchain-explorer-unconfirmed-transaction-https-forum-repetier-com-profile-coverjaguar3