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A BASE validator operates subnet infrastructure and sets weights on netuid 100. BASE is not the miner application surface. Miners compete inside challenges. The master computes the final weight vector from each challenge’s raw scores; the validator fetches that vector and submits it on-chain with its hotkey. Challenge-specific operator tasks (for example Agent Challenge dual allowlists and RA-TLS key release, or PRISM GPU workers) are challenge operator docs under Challenges, not a substitute for this validator pack.

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What a validator runs

The platform validator run command starts two concurrent loops (src/platform_network/cli_app/main.py:821-831):

Registry reconcile loop

Fetches the challenge registry and starts the active challenge containers. See validator/normal_runner.py:45-62.

Weight submit loop

Fetches the master’s latest weight vector and submits it on-chain every weights_interval_seconds. See validator/normal_runner.py:64-91.

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How weights flow

  1. The master computes the final UID weight vector per epoch (src/platform_network/cli_app/main.py:784-818).
  2. The validator fetches that vector over HTTP from GET /v1/weights/latest (validator/weights_client.py:18-30).
  3. The validator validates freshness and shape, then calls set_weights on-chain (validator/normal_runner.py:64-107, bittensor/weight_setter.py:27-44).
Read Weight setting for the cadence and the validation rules.

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Two ways to validate

Run platform validator run to reconcile challenges and submit weights from one process (src/platform_network/cli_app/main.py:834-854). Start at the Quickstart.

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Identity and keys

The validator signs with its hotkey; ownership stays with the coldkey. The wallet defaults are wallet_name: default and wallet_hotkey: default (config/validator.example.yaml:5-6), and master_uid defaults to 0 (config/validator.example.yaml:8).

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Next steps

Quickstart

Get a validator submitting weights fast.

Install the validator

Install the package and its bittensor extra.

Running a validator

Start the runtime and keep it healthy.

Configuration

Every validator setting and its default.