Block height - The block quantity and size in 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://bookmarkmargin.com/story20291566/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-www-webwiki-de-cryptoexplorerhub-com