Block top - The block quantity and length on the blockchain (in blocks) on development of the current block Nonce - The transaction variety for that from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://pr8bookmarks.com/story20360705/top-blockchain-explorer-confirmed-transactions-secrets-https-graph-org-unveiling-transparency-how-blockchain-explorers-function-09-04