Block top - The block number and length from the blockchain (in blocks) on creation of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://bookmark-dofollow.com/story26011257/blockchain-explorer-usdt-trc20-fundamentals-explained-https-www-mixcloud-com-brokerfridge5