Question 1

How are real estate price prediction models evaluated?

Accepted Answer

Models are evaluated daily at 18:00 UTC against properties listed and sold within the last 30 days. Validators download ONNX models from HuggingFace, run inference on numeric features and optional property images, and score predictions using Mean Absolute Percentage Error (MAPE). The scoring formula is: Score = 1 - MAPE. For example, a model with 8.5% average error scores 0.915.

Question 2

Why do models have to be committed 30 days before evaluation?

Accepted Answer

The 30-day commitment window ensures models are tested on never-before-seen data. Models must commit their hash to the blockchain approximately 30 days before evaluation; evaluation then uses only properties listed and sold within the last 30 days. This temporal separation prevents models from memorizing recent listing data and forces genuine generalization.

Question 3

What format do price prediction models need to be in?

Accepted Answer

Models must be exported as ONNX (.onnx files), no larger than 200 MB. ONNX is an open standard format that runs efficiently on validators' hardware. Models receive numeric features (10-76 selected from a standard set, with five required: living_area_sqft, latitude, longitude, bedrooms, bathrooms) and optionally property images. Output must be a single predicted price value per property.

Question 4

How are emissions distributed among competing models?

Accepted Answer

The winner—the highest-scoring model or earliest commit within a 0.3% threshold of the best score—receives 99% of emissions. The remaining 1% is distributed proportionally by score among non-winning models. Detected duplicate models (near-identical predictions) receive 0% emissions; only the earliest committer in each duplicate group is eligible.

Question 5

Can I keep my model private before submitting it to the network?

Accepted Answer

Yes. Miners can keep their HuggingFace repository private while preparing files and training. The miner CLI only hashes your local model file; it does not interact with HuggingFace. After committing the hash to chain, the repository must be made public so validators can download and evaluate the model.

Question 6

What happens if my validator hotkey gets deregistered during the 30-day waiting period?

Accepted Answer

If your hotkey is deregistered before your model becomes evaluation-eligible, re-register it once your commitment is old enough (30+ days). Your original commitment remains on-chain; you do not need to re-submit the model. Validators will pick up your model at the next evaluation cycle after re-registration. This is a one-time cost per model.

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Hardware Requirements

Miner Setup

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Hardware Requirements

Hardware Requirements

Miner Setup

Validator Setup