Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that 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://friendlybookmark.com/story20115093/facts-about-blockchain-explorer-confirmed-transactions-revealed-https-urlscan-io-result-0199164a-7dbe-7737-944c-199699cc315c