Block top - The block number and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that 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://bookmarkrange.com/story21999427/a-review-of-blockchain-explorer-usdt-https-www-webwiki-ch-cryptoexplorerhub-com