SafeL2
Arbitrum One0x4dff9b5b0143e642a3f63a5bcf2d1c328e600bf8
Proxy implementation: 0x29fcb43b46531bca003ddc8fcb67ffe91900c762
Solidity v0.7.6+commit.7338295f
🤖
Query this contract from your AI
Reference:
0x4dff9b5b0143e642a3f63a5bcf2d1c328e600bf8
Sample prompt:
“Tell me the current state of arbitrum/0x4dff9b5b0143e642a3f63a5bcf2d1c328e600bf8”
No AI wired up yet? →
mcp.smarts.md
Admin & Risk
Who can change the rules?
Detected upgradeable controls from the verified ABI.
Upgradeable
Current controls
- Implementation
- 0x29fcb43b46531bca003ddc8fcb67ffe91900c762 ↗ Arbiscan → smarts proxy
Overview
Read Functions
16
Write Functions
14
Events
17
Read Functions
Block #25,170,024 · just now
VERSION()
view
→ 1.4.1
Returns
| Name | Type | Description |
|---|---|---|
| — | string |
approvedHashes(address, bytes32)
view
Parameters
| Name | Type | Description |
|---|---|---|
| — | address | |
| — | bytes32 |
Returns
| Name | Type | Description |
|---|---|---|
| — | uint256 |
checkNSignatures(dataHash: bytes32, data: bytes, signatures: bytes, requiredSignatures: uint256)
view
Checks whether the signature provided is valid for the provided data and hash. Reverts otherwise.
dev: Since the EIP-1271 does an external call, be mindful of reentrancy attacks.
Parameters
| Name | Type | Description |
|---|---|---|
| dataHash | bytes32 | Hash of the data (could be either a message hash or transaction hash) |
| data | bytes | That should be signed (this is passed to an external validator contract) |
| signatures | bytes | Signature data that should be verified. Can be packed ECDSA signature ({bytes32 r}{bytes32 s}{uint8 v}), contract signature (EIP-1271) or approved hash. |
| requiredSignatures | uint256 | Amount of required valid signatures. |
checkSignatures(dataHash: bytes32, data: bytes, signatures: bytes)
view
Checks whether the signature provided is valid for the provided data and hash. Reverts otherwise.
Parameters
| Name | Type | Description |
|---|---|---|
| dataHash | bytes32 | Hash of the data (could be either a message hash or transaction hash) |
| data | bytes | That should be signed (this is passed to an external validator contract) |
| signatures | bytes | Signature data that should be verified. Can be packed ECDSA signature ({bytes32 r}{bytes32 s}{uint8 v}), contract signature (EIP-1271) or approved hash. |
domainSeparator()
view
→ 0x09c7dbbdfecdb062807c2a7aa3fa5ccb3b7361cab07bdc4745cf36036a943906
dev: Returns the domain separator for this contract, as defined in the EIP-712 standard.
Returns
| Name | Type | Description |
|---|---|---|
| — | bytes32 | bytes32 The domain separator hash. |
encodeTransactionData(to: address, value: uint256, data: bytes, operation: uint8, safeTxGas: uint256, baseGas: uint256, gasPrice: uint256, gasToken: address, refundReceiver: address, _nonce: uint256)
view
Returns the pre-image of the transaction hash (see getTransactionHash).
Parameters
| Name | Type | Description |
|---|---|---|
| to | address | Destination address. |
| value | uint256 | Ether value. |
| data | bytes | Data payload. |
| operation | uint8 | Operation type. |
| safeTxGas | uint256 | Gas that should be used for the safe transaction. |
| baseGas | uint256 | Gas costs for that are independent of the transaction execution(e.g. base transaction fee, signature check, payment of the refund) |
| gasPrice | uint256 | Maximum gas price that should be used for this transaction. |
| gasToken | address | Token address (or 0 if ETH) that is used for the payment. |
| refundReceiver | address | Address of receiver of gas payment (or 0 if tx.origin). |
| _nonce | uint256 | Transaction nonce. |
Returns
| Name | Type | Description |
|---|---|---|
| — | bytes | Transaction hash bytes. |
getChainId()
view
→ 42,161
Returns the ID of the chain the contract is currently deployed on.
Returns
| Name | Type | Description |
|---|---|---|
| — | uint256 | The ID of the current chain as a uint256. |
getModulesPaginated(start: address, pageSize: uint256)
view
Returns an array of modules. If all entries fit into a single page, the next pointer will be 0x1. If another page is present, next will be the last element of the returned array.
Parameters
| Name | Type | Description |
|---|---|---|
| start | address | Start of the page. Has to be a module or start pointer (0x1 address) |
| pageSize | uint256 | Maximum number of modules that should be returned. Has to be > 0 |
Returns
| Name | Type | Description |
|---|---|---|
| array | address[] | array Array of modules. |
| next | address | next Start of the next page. |
getOwners()
view
→ [0x7d8e979dcc6ec933c70fbe28b2b7700907d2afea, 0x488a3d37442f583c1c0a356118d1d6181b22434c, 0x00f6d2b4b69ce697f913da16a9d73283dc4c78f2, 0x4192d72c281db0ef10464dd274ee583c33256ac5, 0x5f0dca105195bd58277aa4b4cabc90a791e1b982]
Returns a list of Safe owners.
Returns
| Name | Type | Description |
|---|---|---|
| — | address[] | Array of Safe owners. |
getStorageAt(offset: uint256, length: uint256)
view
Reads `length` bytes of storage in the currents contract
Parameters
| Name | Type | Description |
|---|---|---|
| offset | uint256 | - the offset in the current contract's storage in words to start reading from |
| length | uint256 | - the number of words (32 bytes) of data to read |
Returns
| Name | Type | Description |
|---|---|---|
| — | bytes | the bytes that were read. |
getThreshold()
view
→ 3
Returns the number of required confirmations for a Safe transaction aka the threshold.
Returns
| Name | Type | Description |
|---|---|---|
| — | uint256 | Threshold number. |
getTransactionHash(to: address, value: uint256, data: bytes, operation: uint8, safeTxGas: uint256, baseGas: uint256, gasPrice: uint256, gasToken: address, refundReceiver: address, _nonce: uint256)
view
Returns transaction hash to be signed by owners.
Parameters
| Name | Type | Description |
|---|---|---|
| to | address | Destination address. |
| value | uint256 | Ether value. |
| data | bytes | Data payload. |
| operation | uint8 | Operation type. |
| safeTxGas | uint256 | Fas that should be used for the safe transaction. |
| baseGas | uint256 | Gas costs for data used to trigger the safe transaction. |
| gasPrice | uint256 | Maximum gas price that should be used for this transaction. |
| gasToken | address | Token address (or 0 if ETH) that is used for the payment. |
| refundReceiver | address | Address of receiver of gas payment (or 0 if tx.origin). |
| _nonce | uint256 | Transaction nonce. |
Returns
| Name | Type | Description |
|---|---|---|
| — | bytes32 | Transaction hash. |
isModuleEnabled(module: address)
view
Returns if an module is enabled
Parameters
| Name | Type | Description |
|---|---|---|
| module | address |
Returns
| Name | Type | Description |
|---|---|---|
| — | bool | True if the module is enabled |
isOwner(owner: address)
view
Returns if `owner` is an owner of the Safe.
Parameters
| Name | Type | Description |
|---|---|---|
| owner | address |
Returns
| Name | Type | Description |
|---|---|---|
| — | bool | Boolean if owner is an owner of the Safe. |
nonce()
view
→ 172
Returns
| Name | Type | Description |
|---|---|---|
| — | uint256 |
signedMessages(bytes32)
view
Parameters
| Name | Type | Description |
|---|---|---|
| — | bytes32 |
Returns
| Name | Type | Description |
|---|---|---|
| — | uint256 |
Write Functions
addOwnerWithThreshold(owner: address, _threshold: uint256)
nonpayable
Adds the owner `owner` to the Safe and updates the threshold to `_threshold`.
dev: This can only be done via a Safe transaction.
Parameters
| Name | Type | Description |
|---|---|---|
| owner | address | New owner address. |
| _threshold | uint256 | New threshold. |
approveHash(hashToApprove: bytes32)
nonpayable
Marks hash `hashToApprove` as approved.
dev: This can be used with a pre-approved hash transaction signature. IMPORTANT: The approved hash stays approved forever. There's no revocation mechanism, so it behaves similarly to ECDSA signatures
Parameters
| Name | Type | Description |
|---|---|---|
| hashToApprove | bytes32 | The hash to mark as approved for signatures that are verified by this contract. |
changeThreshold(_threshold: uint256)
nonpayable
Changes the threshold of the Safe to `_threshold`.
dev: This can only be done via a Safe transaction.
Parameters
| Name | Type | Description |
|---|---|---|
| _threshold | uint256 | New threshold. |
disableModule(prevModule: address, module: address)
nonpayable
Disables the module `module` for the Safe.
dev: This can only be done via a Safe transaction.
Parameters
| Name | Type | Description |
|---|---|---|
| prevModule | address | Previous module in the modules linked list. |
| module | address | Module to be removed. |
enableModule(module: address)
nonpayable
Enables the module `module` for the Safe.
dev: This can only be done via a Safe transaction.
Parameters
| Name | Type | Description |
|---|---|---|
| module | address | Module to be whitelisted. |
execTransaction(to: address, value: uint256, data: bytes, operation: uint8, safeTxGas: uint256, baseGas: uint256, gasPrice: uint256, gasToken: address, refundReceiver: address, signatures: bytes)
payable
Executes a `operation` {0: Call, 1: DelegateCall}} transaction to `to` with `value` (Native Currency) and pays `gasPrice` * `gasLimit` in `gasToken` token to `refundReceiver`.
dev: The fees are always transferred, even if the user transaction fails. This method doesn't perform any sanity check of the transaction, such as: - if the contract at `to` address has code or not - if the `gasToken` is a contract or not It is the responsibility of the caller to perform such checks.
Parameters
| Name | Type | Description |
|---|---|---|
| to | address | Destination address of Safe transaction. |
| value | uint256 | Ether value of Safe transaction. |
| data | bytes | Data payload of Safe transaction. |
| operation | uint8 | Operation type of Safe transaction. |
| safeTxGas | uint256 | Gas that should be used for the Safe transaction. |
| baseGas | uint256 | Gas costs that are independent of the transaction execution(e.g. base transaction fee, signature check, payment of the refund) |
| gasPrice | uint256 | Gas price that should be used for the payment calculation. |
| gasToken | address | Token address (or 0 if ETH) that is used for the payment. |
| refundReceiver | address | Address of receiver of gas payment (or 0 if tx.origin). |
| signatures | bytes | Signature data that should be verified. Can be packed ECDSA signature ({bytes32 r}{bytes32 s}{uint8 v}), contract signature (EIP-1271) or approved hash. |
Returns
| Name | Type | Description |
|---|---|---|
| — | bool | success Boolean indicating transaction's success. |
execTransactionFromModule(to: address, value: uint256, data: bytes, operation: uint8)
nonpayable
Execute `operation` (0: Call, 1: DelegateCall) to `to` with `value` (Native Token)
dev: Function is virtual to allow overriding for L2 singleton to emit an event for indexing.
Parameters
| Name | Type | Description |
|---|---|---|
| to | address | Destination address of module transaction. |
| value | uint256 | Ether value of module transaction. |
| data | bytes | Data payload of module transaction. |
| operation | uint8 | Operation type of module transaction. |
Returns
| Name | Type | Description |
|---|---|---|
| success | bool | success Boolean flag indicating if the call succeeded. |
execTransactionFromModuleReturnData(to: address, value: uint256, data: bytes, operation: uint8)
nonpayable
Execute `operation` (0: Call, 1: DelegateCall) to `to` with `value` (Native Token) and return data
Parameters
| Name | Type | Description |
|---|---|---|
| to | address | Destination address of module transaction. |
| value | uint256 | Ether value of module transaction. |
| data | bytes | Data payload of module transaction. |
| operation | uint8 | Operation type of module transaction. |
Returns
| Name | Type | Description |
|---|---|---|
| success | bool | success Boolean flag indicating if the call succeeded. |
| returnData | bytes | returnData Data returned by the call. |
removeOwner(prevOwner: address, owner: address, _threshold: uint256)
nonpayable
Removes the owner `owner` from the Safe and updates the threshold to `_threshold`.
dev: This can only be done via a Safe transaction.
Parameters
| Name | Type | Description |
|---|---|---|
| prevOwner | address | Owner that pointed to the owner to be removed in the linked list |
| owner | address | Owner address to be removed. |
| _threshold | uint256 | New threshold. |
setFallbackHandler(handler: address)
nonpayable
Set Fallback Handler to `handler` for the Safe.
dev: Only fallback calls without value and with data will be forwarded. This can only be done via a Safe transaction. Cannot be set to the Safe itself.
Parameters
| Name | Type | Description |
|---|---|---|
| handler | address | contract to handle fallback calls. |
setGuard(guard: address)
nonpayable
Set Transaction Guard `guard` for the Safe. Make sure you trust the guard.
dev: Set a guard that checks transactions before execution This can only be done via a Safe transaction. ⚠️ IMPORTANT: Since a guard has full power to block Safe transaction execution, a broken guard can cause a denial of service for the Safe. Make sure to carefully audit the guard code and design recovery mechanisms.
Parameters
| Name | Type | Description |
|---|---|---|
| guard | address | The address of the guard to be used or the 0 address to disable the guard |
setup(_owners: address[], _threshold: uint256, to: address, data: bytes, fallbackHandler: address, paymentToken: address, payment: uint256, paymentReceiver: address)
nonpayable
Sets an initial storage of the Safe contract.
dev: This method can only be called once. If a proxy was created without setting up, anyone can call setup and claim the proxy.
Parameters
| Name | Type | Description |
|---|---|---|
| _owners | address[] | List of Safe owners. |
| _threshold | uint256 | Number of required confirmations for a Safe transaction. |
| to | address | Contract address for optional delegate call. |
| data | bytes | Data payload for optional delegate call. |
| fallbackHandler | address | Handler for fallback calls to this contract |
| paymentToken | address | Token that should be used for the payment (0 is ETH) |
| payment | uint256 | Value that should be paid |
| paymentReceiver | address | Address that should receive the payment (or 0 if tx.origin) |
simulateAndRevert(targetContract: address, calldataPayload: bytes)
nonpayable
dev: Performs a delegatecall on a targetContract in the context of self. Internally reverts execution to avoid side effects (making it static). This method reverts with data equal to `abi.encode(bool(success), bytes(response))`. Specifically, the `returndata` after a call to this method will be: `success:bool || response.length:uint256 || response:bytes`.
Parameters
| Name | Type | Description |
|---|---|---|
| targetContract | address | Address of the contract containing the code to execute. |
| calldataPayload | bytes | Calldata that should be sent to the target contract (encoded method name and arguments). |
swapOwner(prevOwner: address, oldOwner: address, newOwner: address)
nonpayable
Replaces the owner `oldOwner` in the Safe with `newOwner`.
dev: This can only be done via a Safe transaction.
Parameters
| Name | Type | Description |
|---|---|---|
| prevOwner | address | Owner that pointed to the owner to be replaced in the linked list |
| oldOwner | address | Owner address to be replaced. |
| newOwner | address | New owner address. |
Events
AddedOwner(owner: address)
| Name | Type | Indexed | Description |
|---|---|---|---|
| owner | address | ✓ |
ApproveHash(approvedHash: bytes32, owner: address)
| Name | Type | Indexed | Description |
|---|---|---|---|
| approvedHash | bytes32 | ✓ | |
| owner | address | ✓ |
ChangedFallbackHandler(handler: address)
| Name | Type | Indexed | Description |
|---|---|---|---|
| handler | address | ✓ |
ChangedGuard(guard: address)
| Name | Type | Indexed | Description |
|---|---|---|---|
| guard | address | ✓ |
ChangedThreshold(threshold: uint256)
| Name | Type | Indexed | Description |
|---|---|---|---|
| threshold | uint256 |
DisabledModule(module: address)
| Name | Type | Indexed | Description |
|---|---|---|---|
| module | address | ✓ |
EnabledModule(module: address)
| Name | Type | Indexed | Description |
|---|---|---|---|
| module | address | ✓ |
ExecutionFailure(txHash: bytes32, payment: uint256)
| Name | Type | Indexed | Description |
|---|---|---|---|
| txHash | bytes32 | ✓ | |
| payment | uint256 |
ExecutionFromModuleFailure(module: address)
| Name | Type | Indexed | Description |
|---|---|---|---|
| module | address | ✓ |
ExecutionFromModuleSuccess(module: address)
| Name | Type | Indexed | Description |
|---|---|---|---|
| module | address | ✓ |
ExecutionSuccess(txHash: bytes32, payment: uint256)
| Name | Type | Indexed | Description |
|---|---|---|---|
| txHash | bytes32 | ✓ | |
| payment | uint256 |
RemovedOwner(owner: address)
| Name | Type | Indexed | Description |
|---|---|---|---|
| owner | address | ✓ |
SafeModuleTransaction(module: address, to: address, value: uint256, data: bytes, operation: uint8)
| Name | Type | Indexed | Description |
|---|---|---|---|
| module | address | ||
| to | address | ||
| value | uint256 | ||
| data | bytes | ||
| operation | uint8 |
SafeMultiSigTransaction(to: address, value: uint256, data: bytes, operation: uint8, safeTxGas: uint256, baseGas: uint256, gasPrice: uint256, gasToken: address, refundReceiver: address, signatures: bytes, additionalInfo: bytes)
| Name | Type | Indexed | Description |
|---|---|---|---|
| to | address | ||
| value | uint256 | ||
| data | bytes | ||
| operation | uint8 | ||
| safeTxGas | uint256 | ||
| baseGas | uint256 | ||
| gasPrice | uint256 | ||
| gasToken | address | ||
| refundReceiver | address | ||
| signatures | bytes | ||
| additionalInfo | bytes |
SafeReceived(sender: address, value: uint256)
| Name | Type | Indexed | Description |
|---|---|---|---|
| sender | address | ✓ | |
| value | uint256 |
SafeSetup(initiator: address, owners: address[], threshold: uint256, initializer: address, fallbackHandler: address)
| Name | Type | Indexed | Description |
|---|---|---|---|
| initiator | address | ✓ | |
| owners | address[] | ||
| threshold | uint256 | ||
| initializer | address | ||
| fallbackHandler | address |
SignMsg(msgHash: bytes32)
| Name | Type | Indexed | Description |
|---|---|---|---|
| msgHash | bytes32 | ✓ |