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Yes, that is accurate and in the SPS Whitepaper they release a good while ago the numbers are:

Airdrop SPS - 400,000
Play To Earn SPS - 900,000

So we can expect more than double the amount of SPS airdropped to be distributed in Battle Rewards and maybe other things as well. This 900,000 are to be distributed in the period of 65 months.

As a side note for you man, the same amount (900,000) will be distributed as rewards of providing LP and Staking in the same time of 65 months.

So we are still very early into the SPS that is in the market, and just as early in the implementations and use cases of it.