Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction quantity for your from address (bear in mind this begins at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://bookmarkport.com/story23217191/not-known-facts-about-blockchain-explorer-unconfirmed-transaction-https-clancy-olesen-4-mdwrite-net-opening-the-record-your-resource-to-blockchain-investigation