Still no solution for that yet. I am trying to order starlink for my Hotel in Minca Colombia. As the connections there are not stable, because the village is in the jungle Starlink would be a great benefit for the region. Does anyone experienced the same?
1) Create smart contract with some use case. For example a secure Chat message system
2) Make the register function of your smart contract (solidity in this case) payable. Meaning that the user can register with his public/private key pair only when he's sending eth with the transaction.
3) make his pair valid for example 1 month to enable some kind of subscription.
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Thats only one idea, another would be make the smart contract and charge for your android/ios app accessing the data in the blockchain. In the second scenario users could bypass the pay wall by using the contract directly, but most wouldn't want to bother with that.