Block top - The block selection and duration on the blockchain (in blocks) on development of the present block Nonce - The transaction selection with the from address (bear in mind this starts at 0 so a nonce of 100 would actually be the one hundred and first transaction submitted https://icelisting.com/story22031526/not-known-facts-about-blockchain-explorer-unconfirmed-transaction-https-urlscan-io-result-0199164a-7dbe-7737-944c-199699cc315c