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I built a Cosmos SDK L1 that replaces Useless PoW Hashes with Verifiable AI Inference (Proof of Useful Work). Looking for Testnet Node Runners. Hey everyone, Iโm a Student & Developer who got frustrated with the current state of Proof of Work. Bitcoin and other PoW chains burn a country's worth of electricity to guess random numbers producing nothing but hashes nobody will ever use again. So for the past few months, I've been building Mythchain from scratch. It's a custom Layer-1 blockchain built on the Cosmos SDK / CometBFT. But instead of traditional mining, I implemented a Proof of Useful Work (PoUW) module. In this network, "mining" means successfully executing deterministic AI tasks (like mathematical proofs, fuzzing, or code gen).