Block top - The block amount and length of the blockchain (in blocks) on generation of the present block Nonce - The transaction number for your from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://bookmarkspedia.com/story5857179/top-blockchain-explorer-confirmed-transactions-secrets-https-md-darmstadt-ccc-de-znwtrv3frkwon6rj4y8pua