# commit_reveal_weights_enabled (/docs/hyperparameters/commit-reveal-weights-enabled)

`commit_reveal_weights_enabled` decides how weights reach the chain. When on
(the default for new subnets), validators must commit a hidden form of their
weights first and the actual values only become public an epoch or more later
— so weight-copying validators cannot free-ride on others' scoring work by
mirroring their submissions in the same epoch.

## How it works [#how-it-works]

The flag flips the accepted submission path. With it **on**, the plain
`set_weights` extrinsic is rejected outright with `CommitRevealEnabled`
(`pallets/subtensor/src/macros/dispatches.rs`); validators must instead
commit — either a salted hash (revealed later by a matching
`reveal_weights` call) or a timelock-encrypted payload that the chain
auto-decrypts at a drand round, no reveal transaction needed. With it
**off**, commits are rejected with `CommitRevealDisabled` and plain
`set_weights` is the only path.

The reveal delay is governed by
[`commit_reveal_period`](/docs/hyperparameters/commit-reveal-period), and the
[`weights_rate_limit`](/docs/hyperparameters/weights-rate-limit) cooldown
applies at commit time rather than set time. Revealed weights pass through
the full `set_weights` validation (length, cap, version key) when they land.

Validators do not need to branch on this flag themselves: `btcli tx
set-weights` (the `set_weights` intent) reads it and automatically dispatches
to plaintext `set_weights` or a timelocked commit, so the same command works
in either regime.

<HyperparamWeightsRules focus="commit_reveal_weights_enabled" />

## Reading and setting [#reading-and-setting]

```bash
btcli sudo get --netuid N --name commit_reveal_weights_enabled
```

Owner-settable; the value is a flag (`true`/`false` or `1`/`0`):

```bash
btcli sudo set --netuid N --name commit_reveal_weights_enabled --value true
```

## Related [#related]

* [`commit_reveal_period`](/docs/hyperparameters/commit-reveal-period) — how long weights stay hidden
* [`weights_rate_limit`](/docs/hyperparameters/weights-rate-limit) — cooldown applied at commit time
* [`weights_version`](/docs/hyperparameters/weights-version) — version gate on revealed weights
* [`min_allowed_weights`](/docs/hyperparameters/min-allowed-weights) — floor on submission size in either mode