Block top - The block selection and length on the blockchain (in blocks) on generation of the present block Nonce - The transaction variety with the from address (Keep in mind this starts off at 0 so a nonce of 100 would really be the one hundred and first transaction https://throbsocial.com/story22712271/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-notes-io-ww2s8