Block height - The block quantity and length of your blockchain (in blocks) on generation of the present block Nonce - The transaction number for your 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://social-medialink.com/story5698506/not-known-facts-about-blockchain-explorer-unconfirmed-transaction-https-pad-geolab-space-1eemv59krmalavl2pdd7cg