Block top - The block selection and length in the blockchain (in blocks) on development of the present block Nonce - The transaction range with the 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://bookmarkize.com/story20553767/5-simple-statements-about-blockchain-explorer-solana-explained-https-pad-fs-lmu-de-h2fzbno0rjqfpyic-69lxg