Block top - The block number and length in the blockchain (in blocks) on creation of the current block Nonce - The transaction variety with the from address (bear in mind this starts at 0 so a nonce of 100 would truly be the a hundred and first transaction submitted https://bookmarknap.com/story10765010/the-greatest-guide-to-blockchain-explorer-unconfirmed-transaction-https-pad-karuka-tech-vc6p2vmyr6a9ij1xxkanwg