Block top - The block selection and duration of your blockchain (in blocks) on generation of the present block Nonce - The transaction number for your from address (bear in mind this begins at 0 so a nonce of 100 would truly be the 101st transaction submitted by this account) https://mysocialname.com/story5419828/everything-about-blockchain-explorer-https-kearns-horn-hubstack-net-monitoring-transfers-how-distributed-ledger-analyzers-work