Mining proxy engineering, from Stratum internals to smarter nonce search.
HashPowerUp represents years of work at the protocol layer of mining: proxies that translate between ecosystems (NiceHash rentals speaking to 2miners pools), manage variable difficulty honestly, and squeeze real efficiency from how work is distributed to machines.
Its most interesting idea treats nonce-space allocation as an explore/exploit problem, applying multi-armed bandit strategies to how the proxy hands out search ranges — classic decision-theory algorithms applied somewhere unexpected.