# Alpha (/docs/guides/evm/precompiles/alpha)

| Property            | Value                                        |
| ------------------- | -------------------------------------------- |
| Rust implementation | `AlphaPrecompile`                            |
| Solidity interface  | `IAlpha`                                     |
| Address             | `0x0000000000000000000000000000000000000808` |
| Status              | Deployed                                     |

Provides typed views of subnet pools, prices, issuance, emissions, and simulated
swaps. All functions are `view`.

## Functions [#functions]

```text
getAlphaPrice(uint16)
getMovingAlphaPrice(uint16)
getTaoInPool(uint16)
getAlphaInPool(uint16)
getAlphaOutPool(uint16)
getAlphaIssuance(uint16)
getTaoWeight()
simSwapTaoForAlpha(uint16,uint64)
simSwapAlphaForTao(uint16,uint64)
getSubnetMechanism(uint16)
getRootNetuid()
getEMAPriceHalvingBlocks(uint16)
getSubnetVolume(uint16)
getTaoInEmission(uint16)
getAlphaInEmission(uint16)
getAlphaOutEmission(uint16)
getSumAlphaPrice()
getCKBurn()
getEmissionAccounting(uint16,bytes32)
getSubnetEconomicState(uint16)
getSubnetFlowState(uint16)
getEmissionGateConfig()
getSwapState(uint16)
hasSwapMigrationRun(bytes)
```

Flow values use signed Solidity integers. Fixed-point economic values are
returned as their raw runtime bits. `getSwapState` includes the fee,
initialization status, balancer quote weight, and both protocol reservoirs;
the initialization flag is the generic swap-initialization view. The
`blockEmission` field returned by `getEmissionGateConfig` is the current value
calculated from total issuance, matching runtime minting.

## Added operations [#added-operations]

| Function                    | Source extrinsic                         |
| --------------------------- | ---------------------------------------- |
| `setRecycleOrBurn`          | `AdminUtils.sudo_set_recycle_or_burn`    |
| `setBurnHalfLife`           | `AdminUtils.sudo_set_burn_half_life`     |
| `setBurnIncreaseMultiplier` | `AdminUtils.sudo_set_burn_increase_mult` |

The five deprecated `Swap` liquidity extrinsics are intentionally not proposed;
they always return the pallet's `Deprecated` error. `Swap.set_fee_rate` and the
remaining Alpha-related AdminUtils calls require Root and are not exposed.
The three listed AdminUtils calls accept a signed subnet owner; only that
signed path is exposed and runtime authorization remains in force.

Source: [`alpha.sol`](https://github.com/RaoFoundation/subtensor/blob/main/precompiles/src/solidity/alpha.sol)