FrxUSD

Fraxtal ERC-20 Token

0xfc00000000000000000000000000000000000001

Proxy 实现合约： 0x0000000083bdf23788585d499eab0d92a8befb1d

Solidity v0.8.30+commit.73712a01

Fungible token following the ERC-20 standard.

🤖
通过你的 AI 查询此合约
引用： 0xfc00000000000000000000000000000000000001
示例提示词： "Tell me the current state of fraxtal/0xfc00000000000000000000000000000000000001"
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Fraxtal 在 Smarts 上是仅文档链：源代码和 ABI 已索引，但当前不提供实时链上数据（状态、最新事件、管理员画像）。AI 代理仍可通过 MCP 调用 get_contract_info 和 get_contract_source。

概览

读取函数
26
写入函数
32
事件
20

读取函数

BRIDGE() view

Returns the bridge contract address used by FrxUSD for cross-chain bridging.✨ AI

返回值

名称 类型 描述
— address Address of the bridge contract that handles cross-chain deposits and withdrawals.✨ AI
DOMAIN_SEPARATOR() view

Retrieve the EIP-712 domain separator used for signing typed data.✨ AI

返回值

名称 类型 描述
— bytes32 EIP-712 domain separator (bytes32) used for permit/typed-data signatures.✨ AI
REMOTE_TOKEN() view

Returns the address of the remote token contract linked to this FrxUSD token.✨ AI

返回值

名称 类型 描述
— address Address of the remote token contract associated with this FrxUSD token.✨ AI
allowance(owner: address, spender: address) view

Return the remaining number of tokens spender is allowed to transfer from owner.✨ AI

开发者： See {IERC20-allowance}.

参数

名称 类型 描述
owner address Token holder address.✨ AI
spender address Address permitted to spend the holder's tokens.✨ AI

返回值

名称 类型 描述
— uint256 Remaining allowance as a uint256 representing the number of tokens spender may transfer from owner.✨ AI
authorizationState(authorizer: address, nonce: bytes32) view

Returns the state of an authorization

开发者： Nonces are randomly generated 32-byte data unique to the authorizer's address

参数

名称 类型 描述
authorizer address Authorizer's address
nonce bytes32 Nonce of the authorization

返回值

名称 类型 描述
— bool True if the nonce is used
balanceOf(account: address) view

Returns the token balance of the specified account address.✨ AI

开发者： See {IERC20-balanceOf}.

参数

名称 类型 描述
account address Address whose ERC-20 token balance will be returned.✨ AI

返回值

名称 类型 描述
— uint256 The current token balance of the account as a uint256.✨ AI
bridge() view

Legacy getter for BRIDGE

返回值

名称 类型 描述
— address address The bridge address
decimals() view

Returns the number of decimal places the token uses.✨ AI

开发者： Returns the number of decimals used to get its user representation. For example, if `decimals` equals `2`, a balance of `505` tokens should be displayed to a user as `5.05` (`505 / 10 ** 2`). Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei. This is the default value returned by this function, unless it's overridden. NOTE: This information is only used for _display_ purposes: it in no way affects any of the arithmetic of the contract, including {IERC20-balanceOf} and {IERC20-transfer}.

返回值

名称 类型 描述
— uint8 Number of decimals used by the token as an uint8 (e.g., 18).✨ AI
eip712Domain() view

Return the EIP-712 domain parameters that the token uses for typed-data signing.✨ AI

开发者： See {IERC-5267}.

返回值

名称 类型 描述
fields bytes1 Single-byte flags or reserved field for the domain (bytes1).✨ AI
name string Domain name string used in EIP-712 (token name).✨ AI
version string Domain version string used in EIP-712.✨ AI
chainId uint256 Chain ID value for the EIP-712 domain.✨ AI
verifyingContract address Address used as verifyingContract in the EIP-712 domain.✨ AI
salt bytes32 32-byte salt value included in the domain for uniqueness.✨ AI
extensions uint256[] Array of uint256 extension values for optional domain parameters.✨ AI
isFreezer(address) view

Checks whether the given address is a registered freezer.✨ AI

参数

名称 类型 描述
— address

返回值

名称 类型 描述
— bool True if the address has freezer privileges, otherwise false.✨ AI
isFrozen(address) view

Returns true if the given address is frozen and cannot transfer or receive tokens.✨ AI

参数

名称 类型 描述
— address

返回值

名称 类型 描述
— bool True if the address is frozen and barred from token transfers; otherwise false.✨ AI
isPaused() view

Returns true when the contract is paused, disabling transfers and other state-changing actions.✨ AI

返回值

名称 类型 描述
— bool True if the contract is paused; false if it is active and operations are allowed.✨ AI
l1Token() view

Legacy getter for the remote token. Use REMOTE_TOKEN going forward.

返回值

名称 类型 描述
— address address The L1 remote token address
l2Bridge() view

Legacy getter for the bridge. Use BRIDGE going forward.

返回值

名称 类型 描述
— address address The bridge address
minters(address) view

Check whether an address is authorized to mint new tokens.✨ AI

参数

名称 类型 描述
— address

返回值

名称 类型 描述
— bool True if the address is an authorized minter, false otherwise.✨ AI
minters_array(uint256) view

Return the minter address stored at the specified index in the contract's minters list.✨ AI

参数

名称 类型 描述
— uint256

返回值

名称 类型 描述
— address The address of the minter at the provided index.✨ AI
name() view

Returns the token name used in wallets and user interfaces.✨ AI

开发者： Returns the name of the token.

返回值

名称 类型 描述
— string The token's human-readable name as a string, for example "FrxUSD".✨ AI
nominatedOwner() view

Shows the address currently nominated to become the contract owner.✨ AI

返回值

名称 类型 描述
— address The nominated owner address; returns the zero address if no nomination exists.✨ AI
nonces(owner: address) view

Returns the current permit nonce for an address.✨ AI

开发者： Returns the current nonce for `owner`. This value must be included whenever a signature is generated for {permit}. Every successful call to {permit} increases ``owner``'s nonce by one. This prevents a signature from being used multiple times.

参数

名称 类型 描述
owner address Address whose permit nonce is returned.✨ AI

返回值

名称 类型 描述
— uint256 Current nonce (uint256) for the owner, used to prevent replay of permit signatures.✨ AI
owner() view

Returns the address of the contract owner.✨ AI

返回值

名称 类型 描述
— address The address that currently holds owner privileges for this contract.✨ AI
remoteToken() view

Legacy getter for REMOTE_TOKEN

返回值

名称 类型 描述
— address address The L1 remote token address
supportsInterface(_interfaceId: bytes4) pure

ERC165 interface check function.

参数

名称 类型 描述
_interfaceId bytes4 Interface ID to check.

返回值

名称 类型 描述
— bool Whether or not the interface is supported by this contract.
symbol() view

Get the ERC-20 token symbol for the FrxUSD token.✨ AI

开发者： Returns the symbol of the token, usually a shorter version of the name.

返回值

名称 类型 描述
— string The token symbol as a string (human-readable, e.g. "frxUSD").✨ AI
timelock_address() view

Returns the timelock contract address used by the token for governance and time-delayed operations.✨ AI

返回值

名称 类型 描述
— address Address of the timelock contract that controls time-delayed governance actions.✨ AI
totalSupply() view

Returns the total number of frxUSD tokens in existence.✨ AI

开发者： See {IERC20-totalSupply}.

返回值

名称 类型 描述
— uint256 Total supply of frxUSD expressed in the token's smallest unit (uint256).✨ AI
version() pure

Upgrade version of the contract

开发者： Does not impact EIP712 version, which is automatically set to "1" in constructor

返回值

名称 类型 描述
— string

写入函数

acceptOwnership() nonpayable

Allow the pending owner to accept and finalize the contract's ownership transfer.✨ AI

addFreezer(_freezer: address) nonpayable

Adds an address to the set of freezers that can freeze accounts.✨ AI

参数

名称 类型 描述
_freezer address Address to grant freezer privileges.✨ AI
addMinter(minter_address: address) nonpayable

Adds a non-bridge minter

参数

名称 类型 描述
minter_address address Address of minter to add
approve(spender: address, value: uint256) nonpayable

Approve spender to transfer up to value tokens from your account.✨ AI

开发者： See {IERC20-approve}. NOTE: If `value` is the maximum `uint256`, the allowance is not updated on `transferFrom`. This is semantically equivalent to an infinite approval. Requirements: - `spender` cannot be the zero address.

参数

名称 类型 描述
spender address Address allowed to spend tokens.✨ AI
value uint256 Maximum token amount the spender is allowed to transfer.✨ AI

返回值

名称 类型 描述
— bool True if the approval succeeded.✨ AI
burn(value: uint256) nonpayable

Allows the StandardBridge on this network to burn tokens.

参数

名称 类型 描述
value uint256
burn(_from: address, _amount: uint256) nonpayable

Allows the StandardBridge on this network to burn tokens.

参数

名称 类型 描述
_from address Address to burn tokens from.
_amount uint256 Amount of tokens to burn.
burnFrom(account: address, value: uint256) nonpayable

Burns tokens from an account using the caller's allowance.✨ AI

开发者： Destroys a `value` amount of tokens from `account`, deducting from the caller's allowance. See {ERC20-_burn} and {ERC20-allowance}. Requirements: - the caller must have allowance for ``accounts``'s tokens of at least `value`.

参数

名称 类型 描述
account address Address whose balance will be reduced.✨ AI
value uint256 Amount of tokens to burn, in the token's smallest unit.✨ AI
burnFrxUsd(_owner: address, _amount: uint256) nonpayable

External admin gated function to burn balance from a given account

开发者： if `_amount` == 0, entire balance will be burned

参数

名称 类型 描述
_owner address The account whose balance will be burned
_amount uint256 The amount of balance to burn
burnMany(_owners: address[], _amounts: uint256[]) nonpayable

External admin gated function to batch burn balance from a set of accounts

开发者： if `_amount` == 0, entire balance will be burned

参数

名称 类型 描述
_owners address[] Array of accounts whose balances will be burned
_amounts uint256[] Array of amounts corresponding to the balances to be burned
cancelAuthorization(authorizer: address, nonce: bytes32, v: uint8, r: bytes32, s: bytes32) nonpayable

The ```cancelAuthorization``` function cancels an authorization nonce

开发者： EOA wallet signatures should be packed in the order of r, s, v

参数

名称 类型 描述
authorizer address Authorizer's address
nonce bytes32 Nonce of the authorization
v uint8 ECDSA signature v value
r bytes32 ECDSA signature r value
s bytes32 ECDSA signature s value
cancelAuthorization(authorizer: address, nonce: bytes32, signature: bytes) nonpayable

The ```cancelAuthorization``` function cancels an authorization nonce

开发者： EOA wallet signatures should be packed in the order of r, s, v

参数

名称 类型 描述
authorizer address Authorizer's address
nonce bytes32 Nonce of the authorization
signature bytes
freeze(_owner: address) nonpayable

External admin gated function to freeze a given account

参数

名称 类型 描述
_owner address The account to be frozen
freezeMany(_owners: address[]) nonpayable

External admin gated function to batch freeze a set of accounts

参数

名称 类型 描述
_owners address[] Array of accounts to be frozen
mint(_to: address, _amount: uint256) nonpayable

Allows the StandardBridge on this network to mint tokens.

参数

名称 类型 描述
_to address Address to mint tokens to.
_amount uint256 Amount of tokens to mint.
minter_burn_from(b_address: address, b_amount: uint256) nonpayable

Used by non-bridge minters to burn tokens

参数

名称 类型 描述
b_address address Address of the account to burn from
b_amount uint256 Amount of tokens to burn
minter_mint(m_address: address, m_amount: uint256) nonpayable

Used by non-bridge minters to mint new tokens

参数

名称 类型 描述
m_address address Address of the account to mint to
m_amount uint256 Amount of tokens to mint
nominateNewOwner(_owner: address) nonpayable

Proposes a new owner for the contract by nominating the specified address.✨ AI

参数

名称 类型 描述
_owner address Address being nominated to become the contract owner; nominee must accept ownership separately.✨ AI
pause() nonpayable

External admin gated pause function

permit(owner: address, spender: address, value: uint256, deadline: uint256, signature: bytes) nonpayable

Allow a spender to spend the owner's tokens using an off-chain EIP-2612 signature.✨ AI

开发者： Sets `value` as the allowance of `spender` over ``owner``'s tokens, given ``owner``'s signed approval. IMPORTANT: The same issues {IERC20-approve} has related to transaction ordering also apply here. Emits an {Approval} event. Requirements: - `spender` cannot be the zero address. - `deadline` must be a timestamp in the future. - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` over the EIP712-formatted function arguments. - the signature must use ``owner``'s current nonce (see {nonces}). For more information on the signature format, see the https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP section]. CAUTION: See Security Considerations above.

参数

名称 类型 描述
owner address Token holder whose approval is being granted.✨ AI
spender address Address being approved to transfer the owner's tokens.✨ AI
value uint256 Amount of tokens the spender is allowed to transfer.✨ AI
deadline uint256 Unix timestamp after which the permit signature is no longer valid.✨ AI
signature bytes
permit(owner: address, spender: address, value: uint256, deadline: uint256, v: uint8, r: bytes32, s: bytes32) nonpayable

Allow a spender to spend the owner's tokens using an off-chain EIP-2612 signature.✨ AI

开发者： Sets `value` as the allowance of `spender` over ``owner``'s tokens, given ``owner``'s signed approval. IMPORTANT: The same issues {IERC20-approve} has related to transaction ordering also apply here. Emits an {Approval} event. Requirements: - `spender` cannot be the zero address. - `deadline` must be a timestamp in the future. - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` over the EIP712-formatted function arguments. - the signature must use ``owner``'s current nonce (see {nonces}). For more information on the signature format, see the https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP section]. CAUTION: See Security Considerations above.

参数

名称 类型 描述
owner address Token holder whose approval is being granted.✨ AI
spender address Address being approved to transfer the owner's tokens.✨ AI
value uint256 Amount of tokens the spender is allowed to transfer.✨ AI
deadline uint256 Unix timestamp after which the permit signature is no longer valid.✨ AI
v uint8 ECDSA signature recovery byte (part of the owner's signature).✨ AI
r bytes32 First 32 bytes of the owner's ECDSA signature.✨ AI
s bytes32 Second 32 bytes of the owner's ECDSA signature.✨ AI
receiveWithAuthorization(from: address, to: address, value: uint256, validAfter: uint256, validBefore: uint256, nonce: bytes32, signature: bytes) nonpayable

The ```receiveWithAuthorization``` function receives a transfer with a signed authorization from the payer

开发者： EOA wallet signatures should be packed in the order of r, s, v

参数

名称 类型 描述
from address Payer's address (Authorizer)
to address Payee's address
value uint256 Amount to be transferred
validAfter uint256 The block.timestamp after which the authorization is valid
validBefore uint256 The block.timestamp before which the authorization is valid
nonce bytes32 Unique nonce
signature bytes
receiveWithAuthorization(from: address, to: address, value: uint256, validAfter: uint256, validBefore: uint256, nonce: bytes32, v: uint8, r: bytes32, s: bytes32) nonpayable

The ```receiveWithAuthorization``` function receives a transfer with a signed authorization from the payer

开发者： EOA wallet signatures should be packed in the order of r, s, v

参数

名称 类型 描述
from address Payer's address (Authorizer)
to address Payee's address
value uint256 Amount to be transferred
validAfter uint256 The block.timestamp after which the authorization is valid
validBefore uint256 The block.timestamp before which the authorization is valid
nonce bytes32 Unique nonce
v uint8 ECDSA signature parameter v
r bytes32 ECDSA signature parameters r
s bytes32 ECDSA signature parameters s
removeFreezer(_freezer: address) nonpayable

Remove a freezer address, revoking its ability to freeze tokens.✨ AI

参数

名称 类型 描述
_freezer address Address to revoke freezer privileges from.✨ AI
removeMinter(minter_address: address) nonpayable

Removes a non-bridge minter

参数

名称 类型 描述
minter_address address Address of minter to remove
setTimelock(_timelock_address: address) nonpayable

Sets the timelock address

参数

名称 类型 描述
_timelock_address address Address of the timelock
thaw(_owner: address) nonpayable

External admin gated function to unfreeze an account

参数

名称 类型 描述
_owner address The account to be unfrozen
thawMany(_owners: address[]) nonpayable

External admin gated function to unfreeze a set of accounts

参数

名称 类型 描述
_owners address[] Array of accounts to be unfrozen
transfer(to: address, value: uint256) nonpayable

Transfer a specified amount of tokens from the caller to the given address.✨ AI

开发者： See {IERC20-transfer}. Requirements: - `to` cannot be the zero address. - the caller must have a balance of at least `value`.

参数

名称 类型 描述
to address Recipient address to receive the tokens.✨ AI
value uint256 Amount of tokens to transfer, specified in the token's smallest unit.✨ AI

返回值

名称 类型 描述
— bool True if the transfer succeeded and was recorded.✨ AI
transferFrom(from: address, to: address, value: uint256) nonpayable

Transfers tokens from 'from' to 'to' using the caller's approved allowance.✨ AI

开发者： See {IERC20-transferFrom}. Skips emitting an {Approval} event indicating an allowance update. This is not required by the ERC. See {xref-ERC20-_approve-address-address-uint256-bool-}[_approve]. NOTE: Does not update the allowance if the current allowance is the maximum `uint256`. Requirements: - `from` and `to` cannot be the zero address. - `from` must have a balance of at least `value`. - the caller must have allowance for ``from``'s tokens of at least `value`.

参数

名称 类型 描述
from address Address to debit tokens from.✨ AI
to address Address to credit tokens to.✨ AI
value uint256 Amount of tokens to transfer, denominated in the token's smallest unit.✨ AI

返回值

名称 类型 描述
— bool True if the transfer succeeds.✨ AI
transferWithAuthorization(from: address, to: address, value: uint256, validAfter: uint256, validBefore: uint256, nonce: bytes32, signature: bytes) nonpayable

The ```transferWithAuthorization``` function executes a transfer with a signed authorization according to Eip3009

开发者： added in v1.1.0

参数

名称 类型 描述
from address Payer's address (Authorizer)
to address Payee's address
value uint256 Amount to be transferred
validAfter uint256 The block.timestamp after which the authorization is valid
validBefore uint256 The block.timestamp before which the authorization is valid
nonce bytes32 Unique nonce
signature bytes
transferWithAuthorization(from: address, to: address, value: uint256, validAfter: uint256, validBefore: uint256, nonce: bytes32, v: uint8, r: bytes32, s: bytes32) nonpayable

The ```transferWithAuthorization``` function executes a transfer with a signed authorization according to Eip3009

开发者： added in v1.1.0

参数

名称 类型 描述
from address Payer's address (Authorizer)
to address Payee's address
value uint256 Amount to be transferred
validAfter uint256 The block.timestamp after which the authorization is valid
validBefore uint256 The block.timestamp before which the authorization is valid
nonce bytes32 Unique nonce
v uint8 ECDSA signature parameter v
r bytes32 ECDSA signature parameters r
s bytes32 ECDSA signature parameters s
unpause() nonpayable

External admin gated unpause function

事件

AccountFrozen(account: address)

Event Emitted when an address is frozen

名称 类型 已索引 描述
account address The account being frozen
AccountThawed(account: address)

Event Emitted when an address is unfrozen

名称 类型 已索引 描述
account address The account being thawed
AddFreezer(account: address)

Event Emitted when an address is added as a freezer

名称 类型 已索引 描述
account address The account being added as a freezer
Approval(owner: address, spender: address, value: uint256)
名称 类型 已索引 描述
owner address ✓
spender address ✓
value uint256
AuthorizationCanceled(authorizer: address, nonce: bytes32)

```AuthorizationCanceled``` event is emitted when an authorization is canceled

名称 类型 已索引 描述
authorizer address ✓ Authorizer's address
nonce bytes32 ✓ Nonce of the authorization
AuthorizationUsed(authorizer: address, nonce: bytes32)

```AuthorizationUsed``` event is emitted when an authorization is used

名称 类型 已索引 描述
authorizer address ✓ Authorizer's address
nonce bytes32 ✓ Nonce of the authorization
Burn(account: address, amount: uint256)

Emitted whenever the bridge burns tokens from an account

名称 类型 已索引 描述
account address ✓ Address of the account tokens are being burned from
amount uint256 Amount of tokens burned
EIP712DomainChanged()
Mint(account: address, amount: uint256)

Emitted whenever the bridge mints tokens to an account

名称 类型 已索引 描述
account address ✓ Address of the account tokens are being minted for
amount uint256 Amount of tokens minted.
MinterAdded(minter_address: address)

Emitted when a non-bridge minter is added

名称 类型 已索引 描述
minter_address address Address of the new minter
MinterRemoved(minter_address: address)

Emitted when a non-bridge minter is removed

名称 类型 已索引 描述
minter_address address Address of the removed minter
OwnerChanged(oldOwner: address, newOwner: address)
名称 类型 已索引 描述
oldOwner address
newOwner address
OwnerNominated(newOwner: address)
名称 类型 已索引 描述
newOwner address
Paused()

Event Emitted when the contract is paused

RemoveFreezer(account: address)

Event Emitted when an address is removed as a freezer

名称 类型 已索引 描述
account address The account being removed as a freezer
TimelockChanged(timelock_address: address)

Emitted when the timelock address changes

名称 类型 已索引 描述
timelock_address address Address of the removed timelock
TokenMinterBurned(from: address, to: address, amount: uint256)

Emitted when a non-bridge minter burns tokens

名称 类型 已索引 描述
from address ✓ The account whose tokens are burned
to address ✓ The minter doing the burning
amount uint256 Amount of tokens burned
TokenMinterMinted(from: address, to: address, amount: uint256)

Emitted when a non-bridge minter mints tokens

名称 类型 已索引 描述
from address ✓ The minter doing the minting
to address ✓ The account that gets the newly minted tokens
amount uint256 Amount of tokens minted
Transfer(from: address, to: address, value: uint256)
名称 类型 已索引 描述
from address ✓
to address ✓
value uint256
Unpaused()

Event Emitted when the contract is unpaused