Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction number for your from address (Keep in mind this commences at 0 so a nonce of 100 would in fact be the one hundred and first transaction https://socialstrategie.com/story5915188/a-review-of-blockchain-explorer-usdt-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers