Block height - The block amount and size on the blockchain (in blocks) on development of the present block Nonce - The transaction selection for 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://bookmarkblast.com/story20357739/new-step-by-step-map-for-blockchain-explorer-unconfirmed-transaction-https-www-bitsdujour-com-profiles-iptrcw