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SUBMIT A PRSUBMIT AN ISSUElast edit: Apr 02, 2026

Constants

Compile-time runtime constants for the Bittensor (Subtensor) runtime. Accessible via api.consts.<Pallet>.<constant_name>. Values read live from node.

info

Generated from a live snapshot of the Subtensor runtime on 2026-04-02. Connected to: wss://entrypoint-finney.opentensor.ai:443

aura​

slotDuration: u64​

  • interface: api.consts.aura.slotDuration

  • value: 12000

  • summary: The slot duration Aura should run with, expressed in milliseconds. The effective value of this type should not change while the chain is running.

    For backwards compatibility either use [MinimumPeriodTimesTwo] or a const.

balances​

existentialDeposit: u64​

  • interface: api.consts.balances.existentialDeposit

  • value: 500

  • summary: The minimum amount required to keep an account open. MUST BE GREATER THAN ZERO!

    If you really need it to be zero, you can enable the feature insecure_zero_ed for this pallet. However, you do so at your own risk: this will open up a major DoS vector. In case you have multiple sources of provider references, you may also get unexpected behaviour if you set this to zero.

    Bottom line: Do yourself a favour and make it at least one!

maxFreezes: u32​

  • interface: api.consts.balances.maxFreezes
  • value: 50
  • summary: The maximum number of individual freeze locks that can exist on an account at any time.

maxLocks: u32​

  • interface: api.consts.balances.maxLocks

  • value: 50

  • summary: The maximum number of locks that should exist on an account. Not strictly enforced, but used for weight estimation.

    Use of locks is deprecated in favour of freezes. See https://github.com/paritytech/substrate/pull/12951/

maxReserves: u32​

  • interface: api.consts.balances.maxReserves

  • value: 50

  • summary: The maximum number of named reserves that can exist on an account.

    Use of reserves is deprecated in favour of holds. See https://github.com/paritytech/substrate/pull/12951/

commitments​

fieldDeposit: u64​

  • interface: api.consts.commitments.fieldDeposit
  • value: 0
  • summary: The amount held on deposit per additional field for a registered identity.

initialDeposit: u64​

  • interface: api.consts.commitments.initialDeposit
  • value: 0
  • summary: The amount held on deposit for a registered identity

maxFields: u32​

  • interface: api.consts.commitments.maxFields
  • value: 3
  • summary: The maximum number of additional fields that can be added to a commitment

contracts​

apiVersion: u16​

  • interface: api.consts.contracts.apiVersion

  • value: 4

  • summary: The version of the HostFn APIs that are available in the runtime.

    Only valid value is ().

codeHashLockupDepositPercent: Perbill​

  • interface: api.consts.contracts.codeHashLockupDepositPercent
  • value: 300000000
  • summary: The percentage of the storage deposit that should be held for using a code hash. Instantiating a contract, or calling [chain_extension::Ext::lock_delegate_dependency] protects the code from being removed. In order to prevent abuse these actions are protected with a percentage of the code deposit.

defaultDepositLimit: u64​

  • interface: api.consts.contracts.defaultDepositLimit
  • value: 31534080
  • summary: Fallback value to limit the storage deposit if it's not being set by the caller.

depositPerByte: u64​

  • interface: api.consts.contracts.depositPerByte

  • value: 30

  • summary: The amount of balance a caller has to pay for each byte of storage.

    Note:

    Changing this value for an existing chain might need a storage migration.

depositPerItem: u64​

  • interface: api.consts.contracts.depositPerItem

  • value: 75

  • summary: The amount of balance a caller has to pay for each storage item.

    Note:

    Changing this value for an existing chain might need a storage migration.

environment: {"_alias":{"hash_":"hash"},"accountId":"Null","balance":"PalletContractsEnvironmentType","hash_":"PalletContractsEnvironmentTypeH256","hasher":"PalletContractsEnvironmentTypeBlakeTwo256","timestamp":"PalletContractsEnvironmentTypeU64","blockNumber":"PalletContractsEnvironmentTypeU32"}​

  • interface: api.consts.contracts.environment

  • value: {"accountId":null,"balance":null,"hash":null,"hasher":null,"timestamp":null,"blockNumber":null}

  • summary: Type that bundles together all the runtime configurable interface types.

    This is not a real config. We just mention the type here as constant so that its type appears in the metadata. Only valid value is ().

maxCodeLen: u32​

  • interface: api.consts.contracts.maxCodeLen

  • value: 131072

  • summary: The maximum length of a contract code in bytes.

    The value should be chosen carefully taking into the account the overall memory limit your runtime has, as well as the maximum allowed callstack depth. Look into the integrity_test() for some insights.

maxDebugBufferLen: u32​

  • interface: api.consts.contracts.maxDebugBufferLen
  • value: 2097152
  • summary: The maximum length of the debug buffer in bytes.

maxDelegateDependencies: u32​

  • interface: api.consts.contracts.maxDelegateDependencies
  • value: 32
  • summary: The maximum number of delegate_dependencies that a contract can lock with [chain_extension::Ext::lock_delegate_dependency].

maxStorageKeyLen: u32​

  • interface: api.consts.contracts.maxStorageKeyLen
  • value: 128
  • summary: The maximum allowable length in bytes for storage keys.

maxTransientStorageSize: u32​

  • interface: api.consts.contracts.maxTransientStorageSize
  • value: 1048576
  • summary: The maximum size of the transient storage in bytes. This includes keys, values, and previous entries used for storage rollback.

schedule: {"limits":"PalletContractsScheduleLimits","instructionWeights":"PalletContractsScheduleInstructionWeights"}​

  • interface: api.consts.contracts.schedule
  • value: {"limits":{"eventTopics":4,"memoryPages":16,"subjectLen":32,"payloadLen":16384,"runtimeMemory":1073741824,"validatorRuntimeMemory":2147483648,"eventRefTime":60000},"instructionWeights":{"base":1259}}
  • summary: Cost schedule and limits.

unsafeUnstableInterface: bool​

  • interface: api.consts.contracts.unsafeUnstableInterface

  • value: false

  • summary: Make contract callable functions marked as #[unstable] available.

    Contracts that use #[unstable] functions won't be able to be uploaded unless this is set to true. This is only meant for testnets and dev nodes in order to experiment with new features.

    Warning:

    Do not set to true on productions chains.

crowdloan​

absoluteMinimumContribution: u64​

  • interface: api.consts.crowdloan.absoluteMinimumContribution
  • value: 100000000
  • summary: The absolute minimum contribution required to contribute to a crowdloan.

maxContributors: u32​

  • interface: api.consts.crowdloan.maxContributors
  • value: 500

maximumBlockDuration: u32​

  • interface: api.consts.crowdloan.maximumBlockDuration
  • value: 432000
  • summary: The maximum block duration for a crowdloan.

minimumBlockDuration: u32​

  • interface: api.consts.crowdloan.minimumBlockDuration
  • value: 50400
  • summary: The minimum block duration for a crowdloan.

minimumDeposit: u64​

  • interface: api.consts.crowdloan.minimumDeposit
  • value: 10000000000
  • summary: The minimum deposit required to create a crowdloan.

palletId: [u8;8]​

  • interface: api.consts.crowdloan.palletId
  • value: 0x62742f636c6f616e
  • summary: The pallet id that will be used to derive crowdloan account ids.

refundContributorsLimit: u32​

  • interface: api.consts.crowdloan.refundContributorsLimit
  • value: 50
  • summary: The maximum number of contributors that can be refunded in a single refund.

drand​

httpFetchTimeout: u64​

  • interface: api.consts.drand.httpFetchTimeout
  • value: 1000
  • summary: The maximum number of milliseconds we are willing to wait for the HTTP request to complete.

unsignedPriority: u64​

  • interface: api.consts.drand.unsignedPriority

  • value: 1048576

  • summary: A configuration for base priority of unsigned transactions.

    This is exposed so that it can be tuned for particular runtime, when multiple pallets send unsigned transactions.

grandpa​

maxAuthorities: u32​

  • interface: api.consts.grandpa.maxAuthorities
  • value: 32
  • summary: Max Authorities in use

maxNominators: u32​

  • interface: api.consts.grandpa.maxNominators
  • value: 20
  • summary: The maximum number of nominators for each validator.

maxSetIdSessionEntries: u64​

  • interface: api.consts.grandpa.maxSetIdSessionEntries

  • value: 0

  • summary: The maximum number of entries to keep in the set id to session index mapping.

    Since the SetIdSession map is only used for validating equivocations this value should relate to the bonding duration of whatever staking system is being used (if any). If equivocation handling is not enabled then this value can be zero.

multisig​

depositBase: u64​

  • interface: api.consts.multisig.depositBase

  • value: 132000000

  • summary: The base amount of currency needed to reserve for creating a multisig execution or to store a dispatch call for later.

    This is held for an additional storage item whose value size is 4 + sizeof((BlockNumber, Balance, AccountId)) bytes and whose key size is 32 + sizeof(AccountId) bytes.

depositFactor: u64​

  • interface: api.consts.multisig.depositFactor

  • value: 32000000

  • summary: The amount of currency needed per unit threshold when creating a multisig execution.

    This is held for adding 32 bytes more into a pre-existing storage value.

maxSignatories: u32​

  • interface: api.consts.multisig.maxSignatories
  • value: 100
  • summary: The maximum amount of signatories allowed in the multisig.

proxy​

announcementDepositBase: u64​

  • interface: api.consts.proxy.announcementDepositBase

  • value: 36000000

  • summary: The base amount of currency needed to reserve for creating an announcement.

    This is held when a new storage item holding a Balance is created (typically 16 bytes).

announcementDepositFactor: u64​

  • interface: api.consts.proxy.announcementDepositFactor

  • value: 68000000

  • summary: The amount of currency needed per announcement made.

    This is held for adding an AccountId, Hash and BlockNumber (typically 68 bytes) into a pre-existing storage value.

maxPending: u32​

  • interface: api.consts.proxy.maxPending
  • value: 75
  • summary: The maximum amount of time-delayed announcements that are allowed to be pending.

maxProxies: u32​

  • interface: api.consts.proxy.maxProxies
  • value: 20
  • summary: The maximum amount of proxies allowed for a single account.

proxyDepositBase: u64​

  • interface: api.consts.proxy.proxyDepositBase

  • value: 60000000

  • summary: The base amount of currency needed to reserve for creating a proxy.

    This is held for an additional storage item whose value size is sizeof(Balance) bytes and whose key size is sizeof(AccountId) bytes.

proxyDepositFactor: u64​

  • interface: api.consts.proxy.proxyDepositFactor

  • value: 33000000

  • summary: The amount of currency needed per proxy added.

    This is held for adding 32 bytes plus an instance of ProxyType more into a pre-existing storage value. Thus, when configuring ProxyDepositFactor one should take into account 32 + proxy_type.encode().len() bytes of data.

registry​

fieldDeposit: u64​

  • interface: api.consts.registry.fieldDeposit
  • value: 100000000
  • summary: The amount held on deposit per additional field for a registered identity.

initialDeposit: u64​

  • interface: api.consts.registry.initialDeposit
  • value: 100000000
  • summary: The amount held on deposit for a registered identity

maxAdditionalFields: u32​

  • interface: api.consts.registry.maxAdditionalFields
  • value: 1
  • summary: Configuration fields Maximum user-configured additional fields

safeMode​

enterDepositAmount: Option<u64>​

  • interface: api.consts.safeMode.enterDepositAmount

  • value: ``

  • summary: The amount that will be reserved upon calling [Pallet::enter].

    None disallows permissionlessly enabling the safe-mode and is a sane default.

enterDuration: u32​

  • interface: api.consts.safeMode.enterDuration
  • value: 0
  • summary: For how many blocks the safe-mode will be entered by [Pallet::enter].

extendDepositAmount: Option<u64>​

  • interface: api.consts.safeMode.extendDepositAmount

  • value: ``

  • summary: The amount that will be reserved upon calling [Pallet::extend].

    None disallows permissionlessly extending the safe-mode and is a sane default.

extendDuration: u32​

  • interface: api.consts.safeMode.extendDuration

  • value: 0

  • summary: For how many blocks the safe-mode can be extended by each [Pallet::extend] call.

    This does not impose a hard limit as the safe-mode can be extended multiple times.

releaseDelay: Option<u32>​

  • interface: api.consts.safeMode.releaseDelay

  • value: ``

  • summary: The minimal duration a deposit will remain reserved after safe-mode is entered or extended, unless [Pallet::force_release_deposit] is successfully called sooner.

    Every deposit is tied to a specific activation or extension, thus each deposit can be released independently after the delay for it has passed.

    None disallows permissionlessly releasing the safe-mode deposits and is a sane default.

scheduler​

maximumWeight: {"refTime":"Compact<u64>","proofSize":"Compact<u64>"}​

  • interface: api.consts.scheduler.maximumWeight
  • value: {"refTime":3200000000000,"proofSize":"0xcccccccccccccccc"}
  • summary: The maximum weight that may be scheduled per block for any dispatchables.

maxScheduledPerBlock: u32​

  • interface: api.consts.scheduler.maxScheduledPerBlock

  • value: 50

  • summary: The maximum number of scheduled calls in the queue for a single block.

    NOTE:

    • Dependent pallets' benchmarks might require a higher limit for the setting. Set a higher limit under runtime-benchmarks feature.

subtensorModule​

alphaHigh: u16​

  • interface: api.consts.subtensorModule.alphaHigh
  • value: 58982
  • summary: The upper bound for the alpha parameter. Used for Liquid Alpha.

alphaLow: u16​

  • interface: api.consts.subtensorModule.alphaLow
  • value: 45875
  • summary: The lower bound for the alpha parameter. Used for Liquid Alpha.

hotkeySwapOnSubnetInterval: u64​

  • interface: api.consts.subtensorModule.hotkeySwapOnSubnetInterval
  • value: 7200
  • summary: Block number for a coldkey swap the hotkey in specific subnet.

initialActivityCutoff: u16​

  • interface: api.consts.subtensorModule.initialActivityCutoff
  • value: 5000
  • summary: Activity constant.

initialAdjustmentAlpha: u64​

  • interface: api.consts.subtensorModule.initialAdjustmentAlpha
  • value: 0
  • summary: Initial adjustment alpha on burn and pow.

initialAdjustmentInterval: u16​

  • interface: api.consts.subtensorModule.initialAdjustmentInterval
  • value: 100
  • summary: Initial adjustment interval.

initialAlphaSigmoidSteepness: i16​

  • interface: api.consts.subtensorModule.initialAlphaSigmoidSteepness
  • value: 1000
  • summary: AlphaSigmoidSteepness constant.

initialBondsMovingAverage: u64​

  • interface: api.consts.subtensorModule.initialBondsMovingAverage
  • value: 900000
  • summary: Initial bonds moving average.

initialBondsPenalty: u16​

  • interface: api.consts.subtensorModule.initialBondsPenalty
  • value: 65535
  • summary: Initial bonds penalty.

initialBondsResetOn: bool​

  • interface: api.consts.subtensorModule.initialBondsResetOn
  • value: false
  • summary: Initial bonds reset.

initialBurn: u64​

  • interface: api.consts.subtensorModule.initialBurn
  • value: 100000000
  • summary: Initial Burn.

initialColdkeySwapAnnouncementDelay: u32​

  • interface: api.consts.subtensorModule.initialColdkeySwapAnnouncementDelay
  • value: 36000
  • summary: Coldkey swap announcement delay.

initialColdkeySwapReannouncementDelay: u32​

  • interface: api.consts.subtensorModule.initialColdkeySwapReannouncementDelay
  • value: 7200
  • summary: Coldkey swap reannouncement delay.

initialDefaultChildKeyTake: u16​

  • interface: api.consts.subtensorModule.initialDefaultChildKeyTake
  • value: 0
  • summary: Initial default childkey take.

initialDefaultDelegateTake: u16​

  • interface: api.consts.subtensorModule.initialDefaultDelegateTake
  • value: 11796
  • summary: Initial default delegation take.

initialDifficulty: u64​

  • interface: api.consts.subtensorModule.initialDifficulty
  • value: 10000000
  • summary: Initial Difficulty.

initialDissolveNetworkScheduleDuration: u32​

  • interface: api.consts.subtensorModule.initialDissolveNetworkScheduleDuration
  • value: 36000
  • summary: Dissolve network schedule duration

initialEmaPriceHalvingPeriod: u64​

  • interface: api.consts.subtensorModule.initialEmaPriceHalvingPeriod
  • value: 201600
  • summary: Initial EMA price halving period

initialEmissionValue: u16​

  • interface: api.consts.subtensorModule.initialEmissionValue
  • value: 0
  • summary: Initial Emission Ratio.

initialImmunityPeriod: u16​

  • interface: api.consts.subtensorModule.initialImmunityPeriod
  • value: 4096
  • summary: Immunity Period Constant.

initialIssuance: u64​

  • interface: api.consts.subtensorModule.initialIssuance
  • value: 0
  • summary: ================================= ==== Initial Value Constants ==== ================================= Initial currency issuance.

initialKappa: u16​

  • interface: api.consts.subtensorModule.initialKappa
  • value: 32767
  • summary: Kappa constant.

initialMaxAllowedUids: u16​

  • interface: api.consts.subtensorModule.initialMaxAllowedUids
  • value: 256
  • summary: Initial maximum allowed network UIDs

initialMaxAllowedValidators: u16​

  • interface: api.consts.subtensorModule.initialMaxAllowedValidators
  • value: 128
  • summary: Initial maximum allowed validators per network.

initialMaxBurn: u64​

  • interface: api.consts.subtensorModule.initialMaxBurn
  • value: 100000000000
  • summary: Initial Max Burn.

initialMaxChildKeyTake: u16​

  • interface: api.consts.subtensorModule.initialMaxChildKeyTake
  • value: 11796
  • summary: Initial maximum childkey take.

initialMaxDifficulty: u64​

  • interface: api.consts.subtensorModule.initialMaxDifficulty
  • value: 4611686018427387903
  • summary: Initial Max Difficulty.

initialMaxRegistrationsPerBlock: u16​

  • interface: api.consts.subtensorModule.initialMaxRegistrationsPerBlock
  • value: 1
  • summary: Initial max registrations per block.

initialMinAllowedUids: u16​

  • interface: api.consts.subtensorModule.initialMinAllowedUids
  • value: 64
  • summary: Initial minimum allowed network UIDs

initialMinAllowedWeights: u16​

  • interface: api.consts.subtensorModule.initialMinAllowedWeights
  • value: 1024
  • summary: Initial min allowed weights setting.

initialMinBurn: u64​

  • interface: api.consts.subtensorModule.initialMinBurn
  • value: 500000
  • summary: Initial Min Burn.

initialMinChildKeyTake: u16​

  • interface: api.consts.subtensorModule.initialMinChildKeyTake
  • value: 0
  • summary: Initial minimum childkey take.

initialMinDelegateTake: u16​

  • interface: api.consts.subtensorModule.initialMinDelegateTake
  • value: 0
  • summary: Initial minimum delegation take.

initialMinDifficulty: u64​

  • interface: api.consts.subtensorModule.initialMinDifficulty
  • value: 10000000
  • summary: Initial Min Difficulty.

initialNetworkImmunityPeriod: u64​

  • interface: api.consts.subtensorModule.initialNetworkImmunityPeriod
  • value: 1296000
  • summary: Initial network immunity period

initialNetworkLockReductionInterval: u64​

  • interface: api.consts.subtensorModule.initialNetworkLockReductionInterval
  • value: 100800
  • summary: Initial lock reduction interval.

initialNetworkMinLockCost: u64​

  • interface: api.consts.subtensorModule.initialNetworkMinLockCost
  • value: 1000000000000
  • summary: Initial network minimum burn cost

initialNetworkRateLimit: u64​

  • interface: api.consts.subtensorModule.initialNetworkRateLimit
  • value: 7200
  • summary: Initial network creation rate limit

initialPruningScore: u16​

  • interface: api.consts.subtensorModule.initialPruningScore
  • value: 65535
  • summary: Initial pruning score for each neuron.

initialRAORecycledForRegistration: u64​

  • interface: api.consts.subtensorModule.initialRAORecycledForRegistration
  • value: 0
  • summary: Initial RAO Recycled.

initialRho: u16​

  • interface: api.consts.subtensorModule.initialRho
  • value: 10
  • summary: Rho constant.

initialScalingLawPower: u16​

  • interface: api.consts.subtensorModule.initialScalingLawPower
  • value: 50
  • summary: Initial scaling law power.

initialServingRateLimit: u64​

  • interface: api.consts.subtensorModule.initialServingRateLimit
  • value: 50
  • summary: Initial serving rate limit.

initialStartCallDelay: u64​

  • interface: api.consts.subtensorModule.initialStartCallDelay
  • value: 0
  • summary: Delay after which a new subnet can dispatch start call extrinsic.

initialSubnetOwnerCut: u16​

  • interface: api.consts.subtensorModule.initialSubnetOwnerCut
  • value: 11796
  • summary: Initial network subnet cut.

initialTaoWeight: u64​

  • interface: api.consts.subtensorModule.initialTaoWeight
  • value: 971718665099567868
  • summary: Initial TAO weight.

initialTargetRegistrationsPerInterval: u16​

  • interface: api.consts.subtensorModule.initialTargetRegistrationsPerInterval
  • value: 2
  • summary: Initial target registrations per interval.

initialTempo: u16​

  • interface: api.consts.subtensorModule.initialTempo
  • value: 360
  • summary: Tempo for each network.

initialTxChildKeyTakeRateLimit: u64​

  • interface: api.consts.subtensorModule.initialTxChildKeyTakeRateLimit
  • value: 216000
  • summary: Initial childkey take transaction rate limit.

initialTxDelegateTakeRateLimit: u64​

  • interface: api.consts.subtensorModule.initialTxDelegateTakeRateLimit
  • value: 216000
  • summary: Initial delegate take transaction rate limit.

initialTxRateLimit: u64​

  • interface: api.consts.subtensorModule.initialTxRateLimit
  • value: 1000
  • summary: Initial transaction rate limit.

initialValidatorPruneLen: u64​

  • interface: api.consts.subtensorModule.initialValidatorPruneLen
  • value: 1
  • summary: Initial validator context pruning length.

initialWeightsVersionKey: u64​

  • interface: api.consts.subtensorModule.initialWeightsVersionKey
  • value: 0
  • summary: Initial weights version key.

keySwapCost: u64​

  • interface: api.consts.subtensorModule.keySwapCost
  • value: 100000000
  • summary: Cost of swapping a hotkey.

keySwapOnSubnetCost: u64​

  • interface: api.consts.subtensorModule.keySwapOnSubnetCost
  • value: 1000000
  • summary: Cost of swapping a hotkey in a subnet.

leaseDividendsDistributionInterval: u32​

  • interface: api.consts.subtensorModule.leaseDividendsDistributionInterval
  • value: 100
  • summary: Number of blocks between dividends distribution.

liquidAlphaOn: bool​

  • interface: api.consts.subtensorModule.liquidAlphaOn
  • value: false
  • summary: A flag to indicate if Liquid Alpha is enabled.

maxBurnLowerBound: u64​

  • interface: api.consts.subtensorModule.maxBurnLowerBound
  • value: 100000000
  • summary: Max burn lower bound.

maxImmuneUidsPercentage: Percent​

  • interface: api.consts.subtensorModule.maxImmuneUidsPercentage
  • value: 80
  • summary: Maximum percentage of immune UIDs.

minBurnUpperBound: u64​

  • interface: api.consts.subtensorModule.minBurnUpperBound
  • value: 1000000000
  • summary: Min burn upper bound.

yuma3On: bool​

  • interface: api.consts.subtensorModule.yuma3On
  • value: false
  • summary: A flag to indicate if Yuma3 is enabled.

swap​

maxFeeRate: u16​

  • interface: api.consts.swap.maxFeeRate
  • value: 10000
  • summary: The maximum fee rate that can be set

maxPositions: u32​

  • interface: api.consts.swap.maxPositions
  • value: 100
  • summary: The maximum number of positions a user can have

minimumLiquidity: u64​

  • interface: api.consts.swap.minimumLiquidity
  • value: 1000
  • summary: Minimum liquidity that is safe for rounding and integer math.

minimumReserve: u64​

  • interface: api.consts.swap.minimumReserve
  • value: 1000000
  • summary: Minimum reserve for tao and alpha

protocolId: [u8;8]​

  • interface: api.consts.swap.protocolId
  • value: 0x74656e2f73776170
  • summary: This type is used to derive protocol accoun ID.

system​

blockHashCount: u32​

  • interface: api.consts.system.blockHashCount
  • value: 2400
  • summary: Maximum number of block number to block hash mappings to keep (oldest pruned first).

blockLength: {"max":"FrameSupportDispatchPerDispatchClassU32"}​

  • interface: api.consts.system.blockLength
  • value: {"max":{"normal":7864320,"operational":10485760,"mandatory":10485760}}
  • summary: The maximum length of a block (in bytes).

blockWeights: {"baseBlock":"SpWeightsWeightV2Weight","maxBlock":"SpWeightsWeightV2Weight","perClass":"FrameSupportDispatchPerDispatchClassWeightsPerClass"}​

  • interface: api.consts.system.blockWeights
  • value: {"baseBlock":{"refTime":431614000,"proofSize":0},"maxBlock":{"refTime":4000000000000,"proofSize":"0xffffffffffffffff"},"perClass":{"normal":{"baseExtrinsic":{"refTime":108157000,"proofSize":0},"maxExtrinsic":{"refTime":2599891843000,"proofSize":"0xa666666666666666"},"maxTotal":{"refTime":3000000000000,"proofSize":"0xbfffffffffffffff"},"reserved":{"refTime":0,"proofSize":0}},"operational":{"baseExtrinsic":{"refTime":108157000,"proofSize":0},"maxExtrinsic":{"refTime":3599891843000,"proofSize":"0xe666666666666666"},"maxTotal":{"refTime":4000000000000,"proofSize":"0xffffffffffffffff"},"reserved":{"refTime":1000000000000,"proofSize":"0x4000000000000000"}},"mandatory":{"baseExtrinsic":{"refTime":108157000,"proofSize":0},"maxExtrinsic":null,"maxTotal":null,"reserved":null}}}
  • summary: Block & extrinsics weights: base values and limits.

dbWeight: {"read":"u64","write":"u64"}​

  • interface: api.consts.system.dbWeight
  • value: {"read":25000000,"write":100000000}
  • summary: The weight of runtime database operations the runtime can invoke.

ss58Prefix: u16​

  • interface: api.consts.system.ss58Prefix

  • value: 42

  • summary: The designated SS58 prefix of this chain.

    This replaces the "ss58Format" property declared in the chain spec. Reason is that the runtime should know about the prefix in order to make use of it as an identifier of the chain.

version: {"specName":"Text","implName":"Text","authoringVersion":"u32","specVersion":"u32","implVersion":"u32","apis":"Vec<([u8;8],u32)>","transactionVersion":"u32","systemVersion":"u8"}​

  • interface: api.consts.system.version
  • value: {"specName":"node-subtensor","implName":"node-subtensor","authoringVersion":1,"specVersion":393,"implVersion":1,"apis":[["0xdf6acb689907609b",5],["0x37e397fc7c91f5e4",2],["0x40fe3ad401f8959a",6],["0xfbc577b9d747efd6",1],["0xd2bc9897eed08f15",3],["0xf78b278be53f454c",2],["0xdd718d5cc53262d4",1],["0xab3c0572291feb8b",1],["0xed99c5acb25eedf5",3],["0xbc9d89904f5b923f",1],["0x37c8bb1350a9a2a8",4],["0xf3ff14d5ab527059",3],["0x582211f65bb14b89",6],["0xe65b00e46cedd0aa",2],["0x68b66ba122c93fa7",2],["0x42e62be4a39e5b60",1],["0x806df4ccaa9ed485",1],["0x8375104b299b74c5",1],["0x5d1fbfbe852f2807",1],["0xc6886e2f8e598b0a",1],["0xcbca25e39f142387",2],["0xa8b093e6508d9e9c",1],["0x1c4585bd5c707202",1]],"transactionVersion":1,"systemVersion":1}
  • summary: Get the chain's in-code version.

timestamp​

minimumPeriod: u64​

  • interface: api.consts.timestamp.minimumPeriod

  • value: 6000

  • summary: The minimum period between blocks.

    Be aware that this is different to the expected period that the block production apparatus provides. Your chosen consensus system will generally work with this to determine a sensible block time. For example, in the Aura pallet it will be double this period on default settings.

transactionPayment​

operationalFeeMultiplier: u8​

  • interface: api.consts.transactionPayment.operationalFeeMultiplier

  • value: 5

  • summary: A fee multiplier for Operational extrinsics to compute "virtual tip" to boost their priority

    This value is multiplied by the final_fee to obtain a "virtual tip" that is later added to a tip component in regular priority calculations. It means that a Normal transaction can front-run a similarly-sized Operational extrinsic (with no tip), by including a tip value greater than the virtual tip.

    ```rust,ignore // For Normal let priority = priority_calc(tip);

    // For Operational let virtual_tip = (inclusion_fee + tip) * OperationalFeeMultiplier; let priority = priority_calc(tip + virtual_tip); ```

    Note that since we use final_fee the multiplier applies also to the regular tip sent with the transaction. So, not only does the transaction get a priority bump based on the inclusion_fee, but we also amplify the impact of tips applied to Operational transactions.

utility​

batchedCallsLimit: u32​

  • interface: api.consts.utility.batchedCallsLimit
  • value: 10922
  • summary: The limit on the number of batched calls.