Block top - The block selection and length from the blockchain (in blocks) on development of the current block Nonce - The transaction amount for your from address (Keep in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://webcastlist.com/story21909409/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-https-skitterphoto-com-photographers-1387379-jimenez-deleuran