COSS is a crypto exchange based in Singapore and also pays holders of its COSS token a proportion of the trading fees. This reward scheme is solidified in a smart contract and tokens can even be held off the exchange once the wallet address has been linked with the contract.

The only slight downside is that the reward is payed weekly in the tokens that were traded, or for non ERC20 tokens the ETH value equivalent. This means that you acquire small amounts of lots of different tokens, however this can be good as if the value of one of these tokens goes to the moon, you’ll be holding some.

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