They say: > To make servers and groups sustainable. As EVM blockchains (Ethereum etc.) added support for zero-knowledge proofs, smart contracts seem a good fit for secure payments for server capacity And then: > You can use whatever cryptocurrency you like, but we are not using ETH - we are using EVM blockchain because of the foundation it provides to build a programmable network-wide consensus, like no other public blockchain The two sentences do not seem to get along very well. In any case, I ignore the implementation's details, but could someone propose an equivalent solution based on Bitcoin? Or is the model totally flawed and therefore needs to be completely revised (see Nostr)?