Block top - The block number and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety to 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://trackbookmark.com/story22011155/not-known-details-about-blockchain-explorer-usdt-trc20-https-md-chaosdorf-de-xdhzafcotoa3ipvrxixxya