Block top - The block quantity and length on the blockchain (in blocks) on development of the current block Nonce - The transaction quantity for your from address (bear in mind this starts off at 0 so a nonce of 100 would truly be the 101st transaction submitted by this https://bookmarkusers.com/story20336251/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-www-pdc-edu-url-https-cryptoexplorerhub-com