Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction range with the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://tvsocialnews.com/story5973007/the-definitive-guide-to-explorer-blockchain-ethereum-https-www-webwiki-fr-cryptoexplorerhub-com