Block top - The block quantity and length in 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 truly be the 101st transaction submitted by this account) https://explorebookmarks.com/story20136543/the-smart-trick-of-blockchain-explorer-app-that-nobody-is-discussing-https-md-darmstadt-ccc-de-znwtrv3frkwon6rj4y8pua