> ## Documentation Index
> Fetch the complete documentation index at: https://docs.optimism.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Rollup deployment configuration

> Learn about the OP Stack rollup deployment configurations.

<Warning>
  This documentation is out of date.
</Warning>

<Info>
  The Rollup configuration is an active work in progress and will likely evolve
  significantly as time goes on. If something isn't working about your
  configuration, you can refer to the [source code](https://github.com/ethereum-optimism/optimism/blob/develop/op-chain-ops/genesis/config.go).
</Info>

<Info>
  Standard configuration is the set of requirements for an OP Stack chain to be
  considered a Standard Chain within the OP Stack. These requirements are
  currently a draft, pending governance approval. For more details, please see
  this [governance thread](https://gov.optimism.io/t/season-6-draft-standard-rollup-charter/8135)
  and the actual requirements in the [OP Stack Configurability Specification](https://specs.optimism.io/protocol/configurability.html?utm_source=op-docs\&utm_medium=docs).
</Info>

## Deployment configuration values

These values are provided to the deployment configuration JSON file when
deploying the L1 contracts.

### Offset values

These offset values determine when network upgrades (hardforks) activate on
your blockchain.

#### l2GenesisRegolithTimeOffset

L2GenesisRegolithTimeOffset is the number of seconds after genesis block that
Regolith hard fork activates. Set it to 0 to activate at genesis. Nil to
disable Regolith.

* **Type:** Number of seconds
* **Default value:** nil
* **Recommended value:** "0x0"
* **Notes:**
* **Standard Config Requirement:** Network upgrade (hardfork) is activated.

***

#### l2GenesisCanyonTimeOffset

L2GenesisCanyonTimeOffset is the number of seconds after genesis block that
Canyon hard fork activates. Set it to 0 to activate at genesis. Nil to
disable Canyon.

* **Type:** Number of seconds
* **Default value:** nil
* **Recommended value:** "0x0"
* **Notes:**
* **Standard Config Requirement:** Network upgrade (hardfork) is activated.

***

#### l2GenesisDeltaTimeOffset

L2GenesisDeltaTimeOffset is the number of seconds after genesis block that
Delta hard fork activates. Set it to 0 to activate at genesis. Nil to disable
Delta.

* **Type:** Number of seconds
* **Default value:** nil
* **Recommended value:** "0x0"
* **Notes:**
* **Standard Config Requirement:** Network upgrade (hardfork) is activated.

***

#### l2GenesisEcotoneTimeOffset

L2GenesisEcotoneTimeOffset is the number of seconds after genesis block that
Ecotone hard fork activates. Set it to 0 to activate at genesis. Nil to disable
Ecotone.

* **Type:** Number of seconds
* **Default value:** nil
* **Recommended value:** "0x0"
* **Notes:**
* **Standard Config Requirement:** Network upgrade (hardfork) is activated.

***

#### l2GenesisFjordTimeOffset

L2GenesisFjordTimeOffset is the number of seconds after genesis block that
Fjord hard fork activates. Set it to 0 to activate at genesis. Nil to
disable Fjord.

* **Type:** Number of seconds
* **Default value:** nil
* **Recommended value:** "0x0"
* **Notes:**
* **Standard Config Requirement:** Network upgrade (hardfork) is activated.

***

#### l2GenesisInteropTimeOffset

L2GenesisInteropTimeOffset is the number of seconds after genesis block that
the Interop hard fork activates. Set it to 0 to activate at genesis. Nil to
disable Interop.

* **Type:** Number of seconds
* **Default value:** nil
* **Recommended value:**
* **Notes:** Interoperability is still [experimental](https://specs.optimism.io/interop/overview.html?utm_source=op-docs\&utm_medium=docs).
* **Standard Config Requirement:** Non-standard feature.

***

#### l1CancunTimeOffset

When Cancun activates. Relative to L1 genesis.

* **Type:** Number of seconds
* **Default value:** None
* **Recommended value:** "0x0"
* **Notes:**
* **Standard Config Requirement:** Network upgrade (hardfork) is activated.

***

### Admin addresses

#### finalSystemOwner

FinalSystemOwner is the L1 system owner. It owns any ownable L1 contracts.

* **Type:** L1 Address
* **Default value:** None
* **Recommended value:** It is recommended to have a single admin
  address to retain a common security model.
* **Notes:** Must not be `address(0)`
* **Standard Config Requirement:**  Must be Chain Governor or Servicer.
  However, the L1 ProxyAdmin owner must be held by Optimism Security Council.
  At the moment, this is L1 ProxyAdmin owner is transferred from the Chain
  Governor or Servicer to [0x5a0Aae59D09fccBdDb6C6CcEB07B7279367C3d2A](https://etherscan.io/address/0x5a0Aae59D09fccBdDb6C6CcEB07B7279367C3d2A)

***

#### proxyAdminOwner

ProxyAdmin contract owner on the L2, which owns all of the Proxy contracts for
every predeployed contract in the range `0x42...0000` to `0x42...2048`. This
makes predeployed contracts easily upgradeable.

* **Type:** L2 Address
* **Default value:** None
* **Recommended value:** It is recommended to have a single admin
  address to retain a common security model.
* **Notes:** Must not be `address(0)`
* **Standard Config Requirement:**

***

### Proxy addresses

#### l1StandardBridgeProxy

L1StandardBridgeProxy represents the address of the L1StandardBridgeProxy on L1
and is used as part of building the L2 genesis state.

* **Type:** L1 Address
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `address(0)`
* **Standard Config Requirement:** Implementation contract must be the most
  up-to-date, governance-approved version of the OP Stack codebase, and, if the
  chain has been upgraded in the past, that the previous versions were a standard
  release of the codebase.

***

#### l1CrossDomainMessengerProxy

L1CrossDomainMessengerProxy represents the address of the
L1CrossDomainMessengerProxy on L1 and is used as part of building the L2
genesis state.

* **Type:** L1 Address
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `address(0)`
* **Standard Config Requirement:** Implementation contract must be the most
  up-to-date, governance-approved version of the OP Stack codebase, and, if the
  chain has been upgraded in the past, that the previous versions were a standard
  release of the codebase.

***

#### l1ERC721BridgeProxy

L1ERC721BridgeProxy represents the address of the L1ERC721Bridge on L1 and is
used as part of building the L2 genesis state.

* **Type:** L1 Address
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `address(0)`
* **Standard Config Requirement:** Implementation contract must be the most
  up-to-date, governance-approved version of the OP Stack codebase, and, if the
  chain has been upgraded in the past, that the previous versions were a standard
  release of the codebase.

***

#### systemConfigProxy

SystemConfigProxy represents the address of the SystemConfigProxy on L1 and is
used as part of the derivation pipeline.

* **Type:** L1 Address
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `address(0)`
* **Standard Config Requirement:** Implementation contract must be the most
  up-to-date, governance-approved version of the OP Stack codebase, and, if the
  chain has been upgraded in the past, that the previous versions were a standard
  release of the codebase.

***

#### optimismPortalProxy

OptimismPortalProxy represents the address of the OptimismPortalProxy on L1 and
is used as part of the derivation pipeline.

* **Type:** L1 Address
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `address(0)`
* **Standard Config Requirement:** Implementation contract must be the most
  up-to-date, governance-approved version of the OP Stack codebase, and, if the
  chain has been upgraded in the past, that the previous versions were a standard
  release of the codebase.

***

### Blocks

These fields apply to L2 blocks: Their timing, when they need to be written to L1, and how they get written.

#### l2BlockTime

Number of seconds between each L2 block. Must be \< L1 block time (12 on mainnet and Sepolia).

* **Type:** Number of seconds
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `0`. Must be less than the L1 blocktime and a whole number.
* **Standard Config Requirement:** 1 or 2 seconds

***

#### maxSequencerDrift

How far the L2 timestamp can differ from the actual L1 timestamp.

* **Type:** Number of seconds
* **Default value:** None
* **Recommended value:** 1800
* **Notes:** Must not be `0`. 1800 (30 minutes) is the constant that takes
  effect with the [Fjord activation](/op-stack/protocol/network-upgrades#fjord).
* **Standard Config Requirement:**

***

#### sequencerWindowSize

Maximum number of L1 blocks that a Sequencer can wait to incorporate the
information in a specific L1 block. For example, if the window is 10 then the
information in L1 block n must be incorporated by L1 block n+10.

* **Type:** Number of blocks
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `0`. 3600 (12 hours) is suggested.
* **Standard Config Requirement:**  3\_600 base layer blocks (12 hours for an
  L2 on Ethereum, assuming 12 second L1 blocktime). This is an important value
  for constraining the sequencer's ability to re-order transactions; higher
  values would pose a risk to user protections.

***

#### channelTimeout

Maximum number of L1 blocks that a transaction channel frame can be considered
valid. A transaction channel frame is a chunk of a compressed batch of
transactions. After the timeout, the frame is dropped.

* **Type:** Number of blocks
* **Default value:** 50
* **Recommended value:**
* **Notes:** This default value was introduced in the [Granite network upgrade](/op-stack/protocol/network-upgrades#granite)
* **Standard Config Requirement:**

***

#### p2pSequencerAddress

Address of the key that the Sequencer uses to sign blocks on the p2p network.

* **Type:** L1 Address
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**  No requirement.

***

#### batchInboxAddress

Address that Sequencer transaction batches are sent to on L1.

* **Type:** L1 Address
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Recommendation:** Convention is `versionByte` ||
  `keccak256(bytes32(chainId))[:19]`, where || denotes concatenation,
  `versionByte` is `0x00`, and `chainId` is a `uint256`.
  This is to cover the full range of chain ids, to the full `uint256` size.
  Here's how you can get this address:
  ```solidity theme={null}
  bytes32 hash = keccak256(abi.encodePacked(bytes32(uint256(chainId)))); 
  # [:19] means taking the first 19 bytes of the hash
  # then preppending a version byte of zero: 0x00
  # `0x00{hash[:19]}`
  ```

***

#### batchSenderAddress

Address that nodes will filter for when searching for Sequencer transaction
batches being sent to the batchInboxAddress. Can be updated later via the
SystemConfig contract on L1.

* **Type:** L1 Address
* **Default value:** Batcher, an address for which you own the private key.
* **Recommended value:**
* **Notes:** Must not be `address(0)`
* **Standard Config Requirement:**  No requirement.

***

#### systemConfigStartBlock

SystemConfigStartBlock represents the block at which the op-node should start
syncing from. It is an override to set this value on legacy networks where it
is not set by default. It can be removed once all networks have this value set
in their storage.

* **Type:** L2 Block Number
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:** The block where the SystemConfig was
  initialized.

***

#### daFootprintGasScalar

Scalar value which is multiplied by the `daUsageEstimate` to limit the total amount of estimated compressed transaction data that can fit into a block.
As of Jovian (Upgrade 17), the base fee update calculation now uses `gasMetered := max(gasUsed, blobGasUsed)` in place of the `gasUsed` value used before.
As a result, blocks with high DA usage may cause the base fee to increase in subsequent blocks.

* **Type:** L2 Block Number
* **Default value:** 400
* **Recommended value:** 400
* **Notes:** [Refer to the specs for more detail](https://specs.optimism.io/protocol/jovian/exec-engine.html#da-footprint-block-limit).
* **Standard Config Requirement:**

***

### Chain Information

#### l1StartingBlockTag

Block tag for the L1 block where the L2 chain will begin syncing from.
It is generally recommended to use a finalized block to avoid issues with reorgs.

* **Type:** Block hash
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `0`.
* **Standard Config Requirement:**

***

#### l1ChainID

Chain ID of the L1 chain.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `0`. 1 for L1 Ethereum mainnet, 11155111 for the
  Sepolia test network, and See [here](https://chainlist.org/?testnets=true)
  for other blockchains.
* **Standard Config Requirement:** 1 (Ethereum)

***

#### l2ChainID

Chain ID of the L2 chain.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `0`. For security reasons, should be unique. Chains
  should add their chain IDs to [ethereum-lists/chains](https://github.com/ethereum-lists/chains).
* **Standard Config Requirement:** Foundation-approved, globally unique value.

***

#### l2GenesisBlockExtraData

L2GenesisBlockExtraData is configurable extradata. Will default to
\[]byte("BEDROCK") if left unspecified.

* **Type:** Number
* **Default value:** \[]byte("BEDROCK")
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### superchainConfigGuardian

SuperchainConfigGuardian represents the GUARDIAN account in the
SuperchainConfig. Has the ability to pause withdrawals.

* **Type:** L1 Address
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `address(0)`
* **Standard Config Requirement:** [0x09f7150D8c019BeF34450d6920f6B3608ceFdAf2](https://etherscan.io/address/0x09f7150D8c019BeF34450d6920f6B3608ceFdAf2)
  A 1/1 Safe owned by the Security Council Safe, with the [Deputy Guardian Module](https://specs.optimism.io/protocol/safe-extensions.html?utm_source=op-docs\&utm_medium=docs#deputy-guardian-module)
  enabled to allow the Optimism Foundation to act as Guardian.

***

### Gas

* **Standard Config Requirement:** Set such that Fee Margin is between 0 and
  50%.
* **Standard Config Requirement:** No higher than 200\_000\_000 gas. Chain
  operators are driven to maintain a stable and reliable chain. When considering
  a change to this value, careful deliberation is necessary.

#### l2GenesisBlockGasLimit

L2GenesisBlockGasLimit represents the chain's block gas limit.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `0`. Must be greater than `MaxResourceLimit` + `SystemTxMaxGas`.
* **Standard Config Requirement:**

***

#### l2GenesisBlockBaseFeePerGas

L2GenesisBlockBaseFeePerGas represents the base fee per gas.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** L2 genesis block base fee per gas cannot be `nil`.
* **Standard Config Requirement:**

***

#### eip1559Elasticity

EIP1559Elasticity is the elasticity of the EIP1559 fee market.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `0`.
* **Standard Config Requirement:**

***

#### eip1559Denominator

EIP1559Denominator is the denominator of EIP1559 base fee market.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `0`.
* **Standard Config Requirement:**

***

#### eip1559DenominatorCanyon

EIP1559DenominatorCanyon is the denominator of EIP1559 base fee market when
Canyon is active.

* **Type:** Number
* **Default value:** None
* **Recommended value:** 250
* **Notes:** Must not be `0` if Canyon is activated.
* **Standard Config Requirement:**

***

#### gasPriceOracleBaseFeeScalar

GasPriceOracleBaseFeeScalar represents the value of the base fee scalar used
for fee calculations.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** Should not be `0`.
* **Standard Config Requirement:**

***

#### gasPriceOracleBlobBaseFeeScalar

GasPriceOracleBlobBaseFeeScalar represents the value of the blob base fee
scalar used for fee calculations.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** Should not be `0`.
* **Standard Config Requirement:**

***

#### minBaseFee

Allows chain operators to specify a minimum base fee to help shorten the length of priority fee auctions.
The `minBaseFee` is an absolute minimum expressed in wei.
0 disables the `minBaseFee` entirely (disabled by default).

* **Type:** Number
* **Default value:** 0
* **Recommended value:** 100000 wei
* **Notes:** Setting the minimum too high may make transactions harder to get included for users. [See the specs for more detail](https://specs.optimism.io/protocol/jovian/exec-engine.html#minimum-base-fee).
* **Standard Config Requirement:** Must not be set higher than 10000000000 wei

***

### Proposal fields

These fields apply to output root proposals. The
l2OutputOracleSubmissionInterval is configurable, see the section below for
guidance.

#### l2OutputOracleStartingBlockNumber

Block number of the first OP Stack block. Typically this should be zero, but
this may be non-zero for networks that have been upgraded from a legacy system
(like OP Mainnet). Will be removed with the addition of permissionless
proposals.

* **Type:** Number
* **Default value:** None
* **Recommended value:** 0
* **Notes:** Should be `0` for new chains.
* **Standard Config Requirement:**

***

#### l2OutputOracleStartingTimestamp

Timestamp of the first OP Stack block. This MUST be the timestamp corresponding
to the block defined by the l1StartingBlockTag. Will be removed with the
addition of permissionless proposals.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** this MUST be the timestamp corresponding to the block defined by
  the l1StartingBlockTag.
* **Standard Config Requirement:**

***

#### l2OutputOracleSubmissionInterval

Number of blocks between proposals to the L2OutputOracle. Will be removed with
the addition of permissionless proposals.

* **Type:** Number of blocks
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `0`. 120 (4 minutes) is suggested.
* **Standard Config Requirement:**

***

#### finalizationPeriodSeconds

Number of seconds that a proposal must be available to challenge before it is
considered finalized by the OptimismPortal contract.

* **Type:** Number of seconds
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `0`. Recommend 12 on test networks, seven days on
  production ones.
* **Standard Config Requirement:** 7 days. High security. Excessively safe
  upper bound that leaves enough time to consider social layer solutions to a
  hack if necessary. Allows enough time for other network participants to
  challenge the integrity of the corresponding output root.

***

#### l2OutputOracleProposer

Address that is allowed to submit output proposals to the L2OutputOracle
contract. Will be removed when the OP Stack has permissionless proposals.

* **Type:** L1 Address
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `address(0)`
* **Standard Config Requirement:** No requirement. This role is only active
  when the OptimismPortal respected game type is `PERMISSIONED_CANNON`. The
  L1ProxyAdmin sets the implementation of the `PERMISSIONED_CANNON` game type.
  Thus, it determines the proposer configuration of the permissioned dispute game.

***

#### l2OutputOracleChallenger

Address that is allowed to challenge output proposals submitted to the
L2OutputOracle. Will be removed when the OP Stack has permissionless
challenges.

* **Type:** L1 Address
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `address(0)`. It is recommended to have a single admin
  address to retain a common security model.
* **Standard Config Requirement:**

***

### Fee recipients

#### baseFeeVaultRecipient

BaseFeeVaultRecipient represents the recipient of fees accumulated in the
BaseFeeVault. Can be an account on L1 or L2, depending on the
BaseFeeVaultWithdrawalNetwork value.

* **Type:** L1 or L2 Address
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `address(0)`. It is recommended to have a single admin
  address to retain a common security model.
* **Standard Config Requirement:**

***

#### l1FeeVaultRecipient

L1FeeVaultRecipient represents the recipient of fees accumulated in the
L1FeeVault. Can be an account on L1 or L2, depending on the
L1FeeVaultWithdrawalNetwork value.

* **Type:** L1 or L2 Address
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `address(0)`. It is recommended to have a single admin
  address to retain a common security model.
* **Standard Config Requirement:**

***

#### sequencerFeeVaultRecipient

SequencerFeeVaultRecipient represents the recipient of fees accumulated in the
SequencerFeeVault. Can be an account on L1 or L2, depending on the
SequencerFeeVaultWithdrawalNetwork value.

* **Type:** L1 or L2 Address
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be `address(0)`. It is recommended to have a single admin
  address to retain a common security model.
* **Standard Config Requirement:**

***

### Minimum fee withdrawal amounts

Withdrawals to L1 are expensive and the minimum fee is to prevent overhead
costs of continuous tiny withdrawals. If the withdrawal execution costs more
than the fee-reward, then the fee Must not be collected economically.

***

#### baseFeeVaultMinimumWithdrawalAmount

BaseFeeVaultMinimumWithdrawalAmount represents the minimum withdrawal amount
for the BaseFeeVault.

* **Type:** Number in wei
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### l1FeeVaultMinimumWithdrawalAmount

L1FeeVaultMinimumWithdrawalAmount represents the minimum withdrawal amount for
the L1FeeVault.

* **Type:** Number in wei
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### sequencerFeeVaultWithdrawalAmount

SequencerFeeVaultMinimumWithdrawalAmount represents the minimum withdrawal
amount for the SequencerFeeVault.

* **Type:** Number in wei
* **Recommended value:**
* **Default value:** None
* **Notes:**
* **Standard Config Requirement:**

***

### Withdrawal network

***

#### baseFeeVaultWithdrawalNetwork

BaseFeeVaultWithdrawalNetwork represents the withdrawal network for the
BaseFeeVault. value of 0 will withdraw ETH to the recipient address on L1 and
a value of 1 will withdraw ETH to the recipient address on L2.

* **Type:** Number representing network enum
* **Default value:** None
* **Recommended value:**
* **Notes:** Withdrawals to Ethereum are more expensive.
* **Standard Config Requirement:**

***

#### l1FeeVaultWithdrawalNetwork

L1FeeVaultWithdrawalNetwork represents the withdrawal network for the
L1FeeVault. A value of 0 will withdraw ETH to the recipient address on L1 and a
value of 1 will withdraw ETH to the recipient address on L2.

* **Type:** Number representing network enum
* **Default value:** None
* **Recommended value:**
* **Notes:** Withdrawals to Ethereum are more expensive.
* **Standard Config Requirement:**

***

#### sequencerFeeVaultWithdrawalNetwork

SequencerFeeVaultWithdrawalNetwork represents the withdrawal network for the
SequencerFeeVault. A value of 0 will withdraw ETH to the recipient address on
L1 and a value of 1 will withdraw ETH to the recipient address on L2.

* **Type:** Number representing network enum
* **Default value:** None
* **Recommended value:**
* **Notes:** Withdrawals to Ethereum are more expensive.
* **Standard Config Requirement:**

***

### Fault proofs

***

#### faultGameAbsolutePrestate

FaultGameAbsolutePrestate is the absolute prestate of Cannon. This is computed
by generating a proof from the 0th -> 1st instruction and grabbing the prestate
from the output JSON. All honest challengers should agree on the setup state of
the program.

* **Type:** Hash
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### faultGameMaxDepth

FaultGameMaxDepth is the maximum depth of the position tree within the fault
dispute game. `2^{FaultGameMaxDepth}` is how many instructions the execution
trace bisection game supports. Ideally, this should be conservatively set so
that there is always enough room for a full Cannon trace.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### faultGameClockExtension

FaultGameClockExtension is the amount of time that the dispute game will set
the potential grandchild claim's, clock to, if the remaining time is less than
this value at the time of a claim's creation.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### faultGameMaxClockDuration

FaultGameMaxClockDuration is the maximum amount of time that may accumulate on
a team's chess clock before they may no longer respond.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### faultGameGenesisBlock

FaultGameGenesisBlock is the block number for genesis.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### faultGameGenesisOutputRoot

FaultGameGenesisOutputRoot is the output root for the genesis block.

* **Type:** Hash
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### faultGameSplitDepth

FaultGameSplitDepth is the depth at which the fault dispute game splits from
output roots to execution trace claims.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### faultGameWithdrawalDelay

FaultGameWithdrawalDelay is the number of seconds that users must wait before
withdrawing ETH from a fault game.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### preimageOracleMinProposalSize

PreimageOracleMinProposalSize is the minimum number of bytes that a large
preimage oracle proposal can be.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### preimageOracleChallengePeriod

PreimageOracleChallengePeriod is the number of seconds that challengers have to
challenge a large preimage proposal.

* **Type:** Number of Seconds
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### proofMaturityDelaySeconds

ProofMaturityDelaySeconds is the number of seconds that a proof must be mature
before it can be used to finalize a withdrawal.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** Should not be `0`.
* **Standard Config Requirement:**

***

#### disputeGameFinalityDelaySeconds

DisputeGameFinalityDelaySeconds is an additional number of seconds a dispute
game must wait before it can be used to finalize a withdrawal.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** Should not be `0`.
* **Standard Config Requirement:**

***

#### respectedGameType

RespectedGameType is the dispute game type that the OptimismPortal contract
will respect for finalizing withdrawals.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### useFaultProofs

UseFaultProofs is a flag that indicates if the system is using fault proofs
instead of the older output oracle mechanism.

* **Type:** Boolean
* **Default value:** None
* **Recommended value:**
* **Notes:** You should understand the implications of running a Fault Proof
  chain.
* **Standard Config Requirement:**

***

### Alt-DA Mode

Alt-DA Mode enables seamless integration of various Data Availability (DA)
Layers, regardless of their commitment type, into the OP Stack. This allows
any chain operator to launch an OP Stack chain using their favorite DA Layer
for sustainably low costs. Learn more [here](/op-stack/features/experimental/alt-da-mode).

***

#### useAltDA

UseAltDA is a flag that indicates if the system is using op-alt-da

* **Type:** bool
* **Recommended value:**
* **Default value:** None
* **Notes:**
* **Standard Config Requirement:**  Non-standard feature.

***

#### daCommitmentType

DACommitmentType specifies the allowed commitment

* **Type:** string
* **Default value:** None
* **Notes:** DACommitmentType must be either KeccakCommitment or
  GenericCommitment. However, KeccakCommitment will be deprecated soon.
* **Recommended value:** GenericCommitment
* **Standard Config Requirement:**  Non-standard feature.

***

#### daChallengeWindow

DAChallengeWindow represents the block interval during which the availability
of a data commitment can be challenged.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** DAChallengeWindow must not be 0 when using altda mode
* **Standard Config Requirement:** Non-standard feature.

***

#### daResolveWindow

DAResolveWindow represents the block interval during which a data availability
challenge can be resolved.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:** DAChallengeWindow must not be 0 when using altda mode
* **Standard Config Requirement:** Non-standard feature.

***

#### daBondSize

DABondSize represents the required bond size to initiate a data availability
challenge.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:** Non-standard feature.

***

#### daResolverRefundPercentage

DAResolverRefundPercentage represents the percentage of the resolving cost to
be refunded to the resolver such as 100 means 100% refund.

* **Type:** Number
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:** Non-standard feature.

***

#### daChallengeProxy

DAChallengeProxy represents the L1 address of the DataAvailabilityChallenge
contract.

* **Type:** Address
* **Default value:** None
* **Recommended value:**
* **Notes:** Must not be address(0) when using altda mode
* **Standard Config Requirement:** Non-standard feature.

***

### Interoperability

***

#### useInterop

UseInterop is a flag that indicates if the system is using interop.

* **Type:** boolean
* **Default value:** None
* **Recommended value:** false
* **Notes:** Interoperability is still [experimental](https://specs.optimism.io/interop/overview.html?utm_source=op-docs\&utm_medium=docs).
* **Standard Config Requirement:** Non-standard feature.

***

### Governance

***

#### enableGovernance

EnableGovernance determines whether to include governance token predeploy.

* **Type:** boolean
* **Default value:** None
* **Recommended value:** false
* **Notes:**
* **Standard Config Requirement:**

***

#### governanceTokenSymbol

GovernanceTokenSymbol represents the  ERC20 symbol of the GovernanceToken.

* **Type**: string
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### governanceTokenName

GovernanceTokenName represents the ERC20 name of the GovernanceToken

* **Type**: string
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

#### governanceTokenOwner

GovernanceTokenOwner represents the owner of the GovernanceToken. Has the
ability to mint and burn tokens.

* **Type**: L2 Address
* **Default value:** None
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

### Miscellaneous

***

#### fundDevAccounts

FundDevAccounts determines whether to fund the dev accounts. Should only
be used during devnet deployments.

* **Type**: Boolean
* **Default value:**
* **Recommended value:**
* **Notes:**
* **Standard Config Requirement:**

***

### Deprecated

***

#### (**DEPRECATED**) gasPriceOracleScalar

GasPriceOracleScalar represents the initial value of the gas scalar in the
GasPriceOracle predeploy. Deprecated: Since Ecotone, this field is superseded
by GasPriceOracleBaseFeeScalar and GasPriceOracleBlobBaseFeeScalar.

***

#### (**DEPRECATED**) gasPriceOracleOverhead

GasPriceOracleOverhead represents the initial value of the gas overhead in the
GasPriceOracle predeploy. Deprecated: Since Ecotone, this field is superseded
by GasPriceOracleBaseFeeScalar and GasPriceOracleBlobBaseFeeScalar.

***

#### (**DEPRECATED**) deploymentWaitConfirmations

DeploymentWaitConfirmations is the number of confirmations to wait during
deployment. This is DEPRECATED and should be removed in a future PR.

***

#### (**DEPRECATED**) numDeployConfirmations

Number of confirmations to wait when deploying smart contracts to L1.