Block top - The block selection and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction range with the from address (bear in mind this starts at 0 so a nonce of 100 would actually be the one hundred and first transaction submitted https://bookmarkport.com/story22820116/everything-about-blockchain-explorer-https-graph-org-unveiling-transparency-how-blockchain-explorers-function-09-04