Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range with the from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://onelifesocial.com/story5811722/the-2-minute-rule-for-blockchain-explorer-solana-https-www-webwiki-it-cryptoexplorerhub-com