Block height - The block amount and size on the blockchain (in blocks) on development of the present block Nonce - The transaction selection with the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://socialicus.com/story5919537/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-canvas-instructure-com-eportfolios-4028322-entries-14252553