BitFan
Public Service Atlas for Bittensor
BitFan
A Bittensor subnet that builds and benchmarks open-source content-moderation models.
Prometheon is a Bittensor subnet where miners compete to build the best open-source content-moderation model and supply the data it is judged on. A miner grows a BitFan Fan Group whose members write posts and replies they believe violate the platform's content policy — recorded as test content, never published. Each day the subnet gathers that test content alongside a sample of real production traffic, and validators label it against a public content policy to establish the day's ground truth. Miners publish their moderation models to Hugging Face and commit the repository and revision on chain; validators then download and run every model themselves, on their own GPUs, over the labelled corpus, and set one weight vector. Two contributions are rewarded in equal measure: supplying usable evaluation data, and building the model that judges it best.
ML engineers and researchers building content-moderation and text-classification models, Bittensor miners and validators, and community leaders who grow fan groups that supply the subnet's evaluation data.
No consumer pricing — Prometheon is a Bittensor subnet rather than a paid product. Participation is by mining (publishing moderation models and growing a fan group) or validating (running GPUs to label content and score models), which carries the usual Bittensor registration and staking costs. There is no subscription or per-call API fee.
Prometheon's measurement is engineered to be hard to game. A miner is never scored on content its own users wrote; the day's corpus is embargoed and released to miners only two days later, so memorising it buys nothing; every model runs identical, hash-pinned inference code inside a subnet-built container, so weights are the only submission and a score difference is a model difference; decoding is forced-choice YES/NO, so a model cannot refuse or emit output that cannot be parsed; and items are judged one at a time, so an instruction hidden in one post cannot reach the verdict on another. Contributing evaluation data and building the best judging model are rewarded equally.
Prometheon is a well-specified benchmarking subnet with unusually strong anti-gaming design, not a consumer product. Judge it through its public transparency dashboard at audit.bitfan.ai and the open prometheon_v2 specification and content policy; participation is as a Bittensor miner (publishing models and growing a fan group) or validator.
