Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction amount for your from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://social-galaxy.com/story5723583/explorer-blockchain-base-an-overview-https-urlscan-io-result-0199164a-7dbe-7737-944c-199699cc315c