Block top - The block selection and duration on the blockchain (in blocks) on development of the current block Nonce - The transaction quantity with the from address (Remember this starts at 0 so a nonce of one hundred would in fact be the 101st transaction submitted by this account) https://pukkabookmarks.com/story20665555/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-md-swk-web-com-onnbpblstmy8giqdrhnkga