Block top - The block selection and duration on the blockchain (in blocks) on generation of the current block Nonce - The transaction amount for that from address (Remember this starts off at 0 so a nonce of a hundred would basically be the 101st transaction submitted by this account) https://myeasybookmarks.com/story5808974/the-definitive-guide-to-explorer-blockchain-ethereum-https-pad-fs-lmu-de-h2fzbno0rjqfpyic-69lxg