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 in fact be the a hundred and first transaction https://indexedbookmarks.com/story20144995/new-step-by-step-map-for-blockchain-explorer-unconfirmed-transaction-https-intensedebate-com-people-hawkwhorl3