Block top - The block number and length from the blockchain (in blocks) on creation 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 really be the 101st transaction submitted by this account) https://hylistings.com/story21490751/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-http-pandora-nla-gov-au-external-html-link-https-cryptoexplorerhub-com