The entire SPKNetwork seems to have been designed around openness, decentralization AND interoperability. What the economy of SPKNetwork does (including the SIP component) is take the most successful ideas around and make a whole (communities, IPFS, PoS, PoB, PoA, "proof of watching ads", defi, NFTs).
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It was certainly put together after a lot of exploration and testing of other systems out there. They took a lot of what others are doing.
This is going to probably push it ahead of most other things.
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