Block top - The block number and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for your from address (bear in mind this begins at 0 so a nonce of 100 would truly be the a hundred and first transaction submitted https://socialwebleads.com/story5697518/blockchain-explorer-usdt-trc20-fundamentals-explained-https-www-instapaper-com-p-16864836