SynFutures@v1 currently only introduces Uniswap and Chainlink as Oracle and requires Quote to be a native asset on Ethereum: recall a trading pair consist of Base/Quote asset. For example, for ETH/USDC, ETH is the Base asset and USDC is the Quote asset.

• If Base is also a native asset on Ethereum, SynFutures@v1 uses Uniswap as the price Oracle by default.

• If Base is not a native asset on Ethereum, SynFutures@v1 uses Chainlink as the price Oracle by default.

For Uniswap as Oracle, SynFutures@v1 directly reads the quantity numbers of two assets in the underlying trading pair in Uniswap, and divides them to get the index price. In order to minimize the price fluctuation caused by price manipulation, a global parameter was introduced and if the index price input exceeds the allowable range of this parameter, the max allowable value is used as the index price.

For Chainlink as Oralce, SynFutures@v1 has no special handling but treats Chainlink's USD price quotation as the quotation for USDC. For example, If the BTC/USD pricing fed by Chainlink is 30,000, the BTC/USDC futures contract of SynFutures@v1 treats the current pricing of BTC as 30,000 USDC.

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