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I haven't seen any decentralized exchange that provides the information of trades and can track the record of transaction history and time. I am looking forward to that exchange which can provide blockchain explorer. Because it is difficult to identify the trading volume without having the blockchain explorer.
2Trades inside exchanges are not Bitcoin transactions; there is no equivalent action observable on the blockchain. Most exchanges do provide trade data, but it's published as just sequences of trades. – Pieter Wuille – 2019-09-16T15:09:48.267