They don’t exist yet, but you can soon buy Polkadot tokens from CoinFLEX via a new mechanism: the initial futures offering (IFO).
Source: https://www.coindesk.com/polkadot-tokens-are-being-sold-in-a-coinflex-initial-futures-offering
Source: https://www.coindesk.com/polkadot-tokens-are-being-sold-in-a-coinflex-initial-futures-offering
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