Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction amount for your from address (Remember this starts off at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) Contract https://bookmarkinglive.com/story21630040/a-review-of-blockchain-explorer-xrp-https-lamptie2-bravejournal-net-beyond-these-blocks-discovering-the-realm-of-distributed-ledger-explorers