Block top - The block number and length in the blockchain (in blocks) on development of the current block Nonce - The transaction range for the from address (bear in mind this begins at 0 so a nonce of 100 would in fact be the a hundred and first transaction https://allbookmarking.com/story20717718/blockchain-explorer-fundamentals-explained-https-hedgedoc-eclair-ec-lyon-fr-6mkao4fyqry-pm5xpak7hg