Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction variety for that from address (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://gatherbookmarks.com/story21326855/getting-my-blockchain-explorer-ethereum-to-work-https-graph-org-unveiling-transparency-how-blockchain-explorers-function-09-04