Block height - The block amount and size on the blockchain (in blocks) on generation 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 a hundred and first transaction submitted https://bookmarkblast.com/story20588898/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-peatix-com-user-27717689