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sai coins are dai coins with a changed name
SAI is a single collateral DAI coin
DAI is a multi collateral DAI coin
Both are different.
Yes, they are different as I've looked into CMC. I don't know the history of it but there's this message that appears on SAI and DAi on CMC. And I've found this blog:
Single-Collateral Dai to Multi-Collateral Dai Upgrade Timeline and ActionsAnyway, I still have one question for op that he didn't answered which is both are stable coins. What does DAI/SAI offers if USDT is already a stable coin?
dai and sai are decentralized stablecoins , usdt tether instead is also a stablecoin as dai or sai coins but is centralized