Block top - The block number and length in the blockchain (in blocks) on development of the current block Nonce - The transaction number for the from address (bear in mind this starts at 0 so a nonce of 100 would truly be the a hundred and first transaction submitted https://socialdummies.com/story5198931/not-known-details-about-explorer-blockchain-ton-https-writeablog-net-storeformat0-blockchain-in-the-microscope-exploring-the-unsung-resources