# Precompiles (/docs/guides/evm/precompiles)

Bittensor precompiles are fixed-address contracts implemented by the Subtensor
runtime. `Deployed` means that the address is registered in the current runtime;
it does not imply complete coverage of the underlying runtime domain.
`Proposed` precompiles are not callable. Their documented addresses are
reserved for those domains, while their function selectors remain provisional
until the interfaces are implemented and released.

The [extrinsic coverage audit](/docs/guides/evm/precompiles/extrinsic-coverage)
tracks every runtime extrinsic in scope and identifies its deployed, proposed,
or intentionally non-callable EVM treatment.

## Ethereum and Frontier precompiles [#ethereum-and-frontier-precompiles]

| Precompile           | Address                                                             | Status   |
| -------------------- | ------------------------------------------------------------------- | -------- |
| `ECRecover`          | <EvmAddress address="0x0000000000000000000000000000000000000001" /> | Deployed |
| `Sha256`             | <EvmAddress address="0x0000000000000000000000000000000000000002" /> | Deployed |
| `Ripemd160`          | <EvmAddress address="0x0000000000000000000000000000000000000003" /> | Deployed |
| `Identity`           | <EvmAddress address="0x0000000000000000000000000000000000000004" /> | Deployed |
| `Modexp`             | <EvmAddress address="0x0000000000000000000000000000000000000005" /> | Deployed |
| `Dispatch`           | <EvmAddress address="0x0000000000000000000000000000000000000006" /> | Deployed |
| `Bn128Mul`           | <EvmAddress address="0x0000000000000000000000000000000000000007" /> | Deployed |
| `Bn128Pairing`       | <EvmAddress address="0x0000000000000000000000000000000000000008" /> | Deployed |
| `Bn128Add`           | <EvmAddress address="0x0000000000000000000000000000000000000009" /> | Deployed |
| `Sha3FIPS256`        | <EvmAddress address="0x0000000000000000000000000000000000000400" /> | Deployed |
| `ECRecoverPublicKey` | <EvmAddress address="0x0000000000000000000000000000000000000401" /> | Deployed |
| `Ed25519Verify`      | <EvmAddress address="0x0000000000000000000000000000000000000402" /> | Deployed |
| `Sr25519Verify`      | <EvmAddress address="0x0000000000000000000000000000000000000403" /> | Deployed |

## Bittensor precompiles [#bittensor-precompiles]

| Precompile                                                                             | Solidity interface          | Details                                                                                                 |
| -------------------------------------------------------------------------------------- | --------------------------- | ------------------------------------------------------------------------------------------------------- |
| [`BalanceTransferPrecompile`](/docs/guides/evm/precompiles/balance-transfer)           | `ISubtensorBalanceTransfer` | <EvmAddress address="0x0000000000000000000000000000000000000800" /><br />Deployed                       |
| [`StakingPrecompile`](/docs/guides/evm/precompiles/staking-v1)                         | `IStaking` V1               | <EvmAddress address="0x0000000000000000000000000000000000000801" /><br />Deployed                       |
| [`MetagraphPrecompile`](/docs/guides/evm/precompiles/metagraph)                        | `IMetagraph`                | <EvmAddress address="0x0000000000000000000000000000000000000802" /><br />Deployed                       |
| [`SubnetPrecompile`](/docs/guides/evm/precompiles/subnet)                              | `ISubnet`                   | <EvmAddress address="0x0000000000000000000000000000000000000803" /><br />Deployed                       |
| [`NeuronPrecompile`](/docs/guides/evm/precompiles/neuron)                              | `INeuron`                   | <EvmAddress address="0x0000000000000000000000000000000000000804" /><br />Deployed                       |
| [`StakingPrecompileV2`](/docs/guides/evm/precompiles/staking-v2)                       | `IStaking` V2               | <EvmAddress address="0x0000000000000000000000000000000000000805" /><br />Deployed                       |
| [`UidLookupPrecompile`](/docs/guides/evm/precompiles/uid-lookup)                       | `IUidLookup`                | <EvmAddress address="0x0000000000000000000000000000000000000806" /><br />Deployed                       |
| [`StorageQueryPrecompile`](/docs/guides/evm/precompiles/storage-query)                 | Selectorless                | <EvmAddress address="0x0000000000000000000000000000000000000807" /><br />Deployed · deprecation planned |
| [`AlphaPrecompile`](/docs/guides/evm/precompiles/alpha)                                | `IAlpha`                    | <EvmAddress address="0x0000000000000000000000000000000000000808" /><br />Deployed                       |
| [`CrowdloanPrecompile`](/docs/guides/evm/precompiles/crowdloan)                        | `ICrowdloan`                | <EvmAddress address="0x0000000000000000000000000000000000000809" /><br />Deployed                       |
| [`LeasingPrecompile`](/docs/guides/evm/precompiles/leasing)                            | `ILeasing`                  | <EvmAddress address="0x000000000000000000000000000000000000080a" /><br />Deployed                       |
| [`ProxyPrecompile`](/docs/guides/evm/precompiles/proxy)                                | `IProxy`                    | <EvmAddress address="0x000000000000000000000000000000000000080b" /><br />Deployed                       |
| [`AddressMappingPrecompile`](/docs/guides/evm/precompiles/address-mapping)             | `IAddressMapping`           | <EvmAddress address="0x000000000000000000000000000000000000080c" /><br />Deployed                       |
| [`VotingPowerPrecompile`](/docs/guides/evm/precompiles/voting-power)                   | `IVotingPower`              | <EvmAddress address="0x000000000000000000000000000000000000080d" /><br />Deployed                       |
| [`BalancePrecompile`](/docs/guides/evm/precompiles/account-balance)                    | `IBalance`                  | <EvmAddress address="0x000000000000000000000000000000000000080e" /><br />Deployed                       |
| [`SchedulerPrecompile`](/docs/guides/evm/precompiles/scheduler)                        | `IScheduler`                | <EvmAddress address="0x000000000000000000000000000000000000080f" /><br />Deployed                       |
| [`DrandPrecompile`](/docs/guides/evm/precompiles/drand)                                | `IDrand`                    | <EvmAddress address="0x0000000000000000000000000000000000000810" /><br />Deployed                       |
| [`TimestampPrecompile`](/docs/guides/evm/precompiles/timestamp)                        | `ITimestamp`                | <EvmAddress address="0x0000000000000000000000000000000000000811" /><br />Deployed                       |
| [`RuntimeConfigurationPrecompile`](/docs/guides/evm/precompiles/runtime-configuration) | `IRuntimeConfiguration`     | <EvmAddress address="0x0000000000000000000000000000000000000812" /><br />Deployed                       |
| [`PrecompileRegistry`](/docs/guides/evm/precompiles/registry)                          | `IPrecompileRegistry`       | <EvmAddress address="0x0000000000000000000000000000000000000813" /><br />Deployed                       |

Projects that need proactive event delivery should use
[project-scoped event relays](/docs/guides/evm/precompile-design#project-scoped-event-relays)
instead of protocol-level event-reporting precompiles.

Released addresses and selectors remain reserved permanently. The compatibility
and lifecycle rules are documented in
[Precompile design and lifecycle](/docs/guides/evm/precompile-design).