Block top - The block number and length on the blockchain (in blocks) on generation of the present block Nonce - The transaction amount to the from address (bear in mind this starts at 0 so a nonce of a hundred would truly be the a hundred and first transaction https://social40.com/story6114100/5-simple-statements-about-blockchain-explorer-solana-explained-https-pad-karuka-tech-vc6p2vmyr6a9ij1xxkanwg