Block top - The block amount and length on the blockchain (in blocks) on creation of the present block Nonce - The transaction number for that from address (bear in mind this starts at 0 so a nonce of a hundred would in fact be the a hundred and first https://tinybookmarks.com/story20581736/blockchain-explorer-fundamentals-explained-https-md-darmstadt-ccc-de-znwtrv3frkwon6rj4y8pua