USD₮0

Arbitrum One ERC-20 Token

0xfd086bc7cd5c481dcc9c85ebe478a1c0b69fcbb9

Proxy implementation: 0x3263cd783823d04a6b9819517e0e6840d37ca3f4

Solidity v0.8.4+commit.c7e474f2

Fungible token following the ERC-20 standard.

🤖

Query this contract from your AI

Reference: usdt-arbitrum 0xfd086bc7cd5c481dcc9c85ebe478a1c0b69fcbb9

Sample prompt: “Tell me the current state of usdt-arbitrum”

No AI wired up yet? → mcp.smarts.md

Admin & Risk

Who can change the rules?

Block #25,169,815

Detected upgradeable, mintable, and ownable controls from the verified ABI.

Upgradeable Mintable Ownable

Current controls

Implementation: 0x3263cd783823d04a6b9819517e0e6840d37ca3f4 ↗ Arbiscan → smarts proxy
Owner: 0x4dff9b5b0143e642a3f63a5bcf2d1c328e600bf8 ↗ Arbiscan → smarts

Overview

Read Functions

Write Functions

Events

Read Functions

Block #25,169,815 · just now

CANCEL_AUTHORIZATION_TYPEHASH() view → 0x158b0a9edf7a828aad02f63cd515c68ef2f50ba807396f6d12842833a1597429

Returns

Name	Type	Description
—	bytes32

DOMAIN_SEPARATOR() view → 0x566af68fb471b22d6421762f84aa7bd761c670a2e4d5c8a47d4085d5957b127c

Returns

Name	Type	Description
—	bytes32

RECEIVE_WITH_AUTHORIZATION_TYPEHASH() view → 0xd099cc98ef71107a616c4f0f941f04c322d8e254fe26b3c6668db87aae413de8

Returns

Name	Type	Description
—	bytes32

TRANSFER_WITH_AUTHORIZATION_TYPEHASH() view → 0x7c7c6cdb67a18743f49ec6fa9b35f50d52ed05cbed4cc592e13b44501c1a2267

Returns

Name	Type	Description
—	bytes32

USDT0_L1_LOCKBOX() view → 0x6c96de32cea08842dcc4058c14d3aaad7fa41dee

Returns

Name	Type	Description
—	address

allowance(owner: address, spender: address) view

dev: See {IERC20-allowance}.

Parameters

Name	Type	Description
owner	address
spender	address

Returns

Name	Type	Description
—	uint256

authorizationState(authorizer: address, nonce: bytes32) view

Returns the state of an authorization

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

Parameters

Name	Type	Description
authorizer	address	Authorizer's address
nonce	bytes32	Nonce of the authorization

Returns

Name	Type	Description
—	bool	True if the nonce is used

balanceOf(account: address) view

dev: See {IERC20-balanceOf}.

Parameters

Name	Type	Description
account	address

Returns

Name	Type	Description
—	uint256

decimals() view → 6

dev: 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 value {ERC20} uses, unless this function is 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}.

Returns

Name	Type	Description
—	uint8

isBlocked(address) view

Parameters

Name	Type	Description
—	address

Returns

Name	Type	Description
—	bool

isTrusted(address) view

Parameters

Name	Type	Description
—	address

Returns

Name	Type	Description
—	bool

l1Address() view → 0x0000000000000000000000000000000000000000

Returns

Name	Type	Description
—	address	address of layer 1 token

name() view → USD₮0

dev: Returns the name of the token.

Returns

Name	Type	Description
—	string

nonces(owner: address) view

dev: See {IERC20Permit-nonces}.

Parameters

Name	Type	Description
owner	address

Returns

Name	Type	Description
—	uint256

oftContract() view → 0x14e4a1b13bf7f943c8ff7c51fb60fa964a298d92

Returns

Name	Type	Description
—	address

owner() view → 0x4dff9b5b0143e642a3f63a5bcf2d1c328e600bf8

dev: Returns the address of the current owner.

Returns

Name	Type	Description
—	address

symbol() view → USD₮0

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

Returns

Name	Type	Description
—	string

totalSupply() view → 980,922,588.09 USD₮0

dev: See {IERC20-totalSupply}.

Returns

Name	Type	Description
—	uint256

Write Functions

addToBlockedList(_user: address) nonpayable

Parameters

Name	Type	Description
_user	address

approve(spender: address, amount: uint256) nonpayable

dev: See {IERC20-approve}. Requirements: - `spender` cannot be the zero address.

Parameters

Name	Type	Description
spender	address
amount	uint256

Returns

Name	Type	Description
—	bool

bridgeBurn(account: address, amount: uint256) nonpayable

should decrease token supply by amount, and should (probably) only be callable by the L1 bridge.

Parameters

Name	Type	Description
account	address
amount	uint256

bridgeMint(account: address, amount: uint256) nonpayable

should increase token supply by amount, and should (probably) only be callable by the L1 bridge.

Parameters

Name	Type	Description
account	address
amount	uint256

burn(_from: address, _amount: uint256) nonpayable

Parameters

Name	Type	Description
_from	address
_amount	uint256

cancelAuthorization(authorizer: address, nonce: bytes32, v: uint8, r: bytes32, s: bytes32) nonpayable

Attempt to cancel an authorization

Parameters

Name	Type	Description
authorizer	address	Authorizer's address
nonce	bytes32	Nonce of the authorization
v	uint8	v of the signature
r	bytes32	r of the signature
s	bytes32	s of the signature

cancelAuthorization(authorizer: address, nonce: bytes32, signature: bytes) nonpayable

Attempt to cancel an authorization

Parameters

Name	Type	Description
authorizer	address	Authorizer's address
nonce	bytes32	Nonce of the authorization
signature	bytes

decreaseAllowance(spender: address, subtractedValue: uint256) nonpayable

dev: Atomically decreases the allowance granted to `spender` by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - `spender` cannot be the zero address. - `spender` must have allowance for the caller of at least `subtractedValue`.

Parameters

Name	Type	Description
spender	address
subtractedValue	uint256

Returns

Name	Type	Description
—	bool

destroyBlockedFunds(_blockedUser: address) nonpayable

Parameters

Name	Type	Description
_blockedUser	address

increaseAllowance(spender: address, addedValue: uint256) nonpayable

dev: Atomically increases the allowance granted to `spender` by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - `spender` cannot be the zero address.

Parameters

Name	Type	Description
spender	address
addedValue	uint256

Returns

Name	Type	Description
—	bool

initialize(_name: string, _symbol: string, _decimals: uint8) nonpayable

Parameters

Name	Type	Description
_name	string
_symbol	string
_decimals	uint8

migrate(_name: string, _symbol: string, _oftContract: address) nonpayable

Parameters

Name	Type	Description
_name	string
_symbol	string
_oftContract	address

mint(_destination: address, _amount: uint256) nonpayable

Parameters

Name	Type	Description
_destination	address
_amount	uint256

multiTransfer(_recipients: address[], _values: uint256[]) nonpayable

Parameters

Name	Type	Description
_recipients	address[]
_values	uint256[]

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

dev: See {IERC20Permit-permit}.

Parameters

Name	Type	Description
owner_	address
spender	address
value	uint256
deadline	uint256
signature	bytes

permit(owner_: address, spender: address, value: uint256, deadline: uint256, v: uint8, r: bytes32, s: bytes32) nonpayable

dev: See {IERC20Permit-permit}.

Parameters

Name	Type	Description
owner_	address
spender	address
value	uint256
deadline	uint256
v	uint8
r	bytes32
s	bytes32

receiveWithAuthorization(from: address, to: address, value: uint256, validAfter: uint256, validBefore: uint256, nonce: bytes32, signature: bytes) nonpayable

Receive a transfer with a signed authorization from the payer

dev: This has an additional check to ensure that the payee's address matches the caller of this function to prevent front-running attacks.

Parameters

Name	Type	Description
from	address	Payer's address (Authorizer)
to	address	Payee's address
value	uint256	Amount to be transferred
validAfter	uint256	The time after which this is valid (unix time)
validBefore	uint256	The time before which this is valid (unix time)
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

Receive a transfer with a signed authorization from the payer

dev: This has an additional check to ensure that the payee's address matches the caller of this function to prevent front-running attacks.

Parameters

Name	Type	Description
from	address	Payer's address (Authorizer)
to	address	Payee's address
value	uint256	Amount to be transferred
validAfter	uint256	The time after which this is valid (unix time)
validBefore	uint256	The time before which this is valid (unix time)
nonce	bytes32	Unique nonce
v	uint8	v of the signature
r	bytes32	r of the signature
s	bytes32	s of the signature

redeem(_amount: uint256) nonpayable

Parameters

Name	Type	Description
_amount	uint256

removeFromBlockedList(_user: address) nonpayable

Parameters

Name	Type	Description
_user	address

renounceOwnership() nonpayable

dev: Leaves the contract without owner. It will not be possible to call `onlyOwner` functions anymore. Can only be called by the current owner. NOTE: Renouncing ownership will leave the contract without an owner, thereby removing any functionality that is only available to the owner.

setOFTContract(_oftContract: address) nonpayable

Parameters

Name	Type	Description
_oftContract	address

transfer(recipient: address, amount: uint256) nonpayable

dev: See {IERC20-transfer}. Requirements: - `recipient` cannot be the zero address. - the caller must have a balance of at least `amount`.

Parameters

Name	Type	Description
recipient	address
amount	uint256

Returns

Name	Type	Description
—	bool

transferFrom(_sender: address, _recipient: address, _amount: uint256) nonpayable

dev: See {IERC20-transferFrom}. Emits an {Approval} event indicating the updated allowance. This is not required by the EIP. See the note at the beginning of {ERC20}. Requirements: - `sender` and `recipient` cannot be the zero address. - `sender` must have a balance of at least `amount`. - the caller must have allowance for ``sender``'s tokens of at least `amount`.

Parameters

Name	Type	Description
_sender	address
_recipient	address
_amount	uint256

Returns

Name	Type	Description
—	bool

transferOwnership(newOwner: address) nonpayable

dev: Transfers ownership of the contract to a new account (`newOwner`). Can only be called by the current owner.

Parameters

Name	Type	Description
newOwner	address

transferWithAuthorization(from: address, to: address, value: uint256, validAfter: uint256, validBefore: uint256, nonce: bytes32, signature: bytes) nonpayable

Execute a transfer with a signed authorization

Parameters

Name	Type	Description
from	address	Payer's address (Authorizer)
to	address	Payee's address
value	uint256	Amount to be transferred
validAfter	uint256	The time after which this is valid (unix time)
validBefore	uint256	The time before which this is valid (unix time)
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

Execute a transfer with a signed authorization

Parameters

Name	Type	Description
from	address	Payer's address (Authorizer)
to	address	Payee's address
value	uint256	Amount to be transferred
validAfter	uint256	The time after which this is valid (unix time)
validBefore	uint256	The time before which this is valid (unix time)
nonce	bytes32	Unique nonce
v	uint8	v of the signature
r	bytes32	r of the signature
s	bytes32	s of the signature

updateNameAndSymbol(_name: string, _symbol: string) nonpayable

Parameters

Name	Type	Description
_name	string
_symbol	string

Events

Approval(owner: address, spender: address, value: uint256)

Name	Type	Indexed
owner	address	✓
spender	address	✓
value	uint256

AuthorizationCanceled(authorizer: address, nonce: bytes32)

Name	Type	Indexed	Description
authorizer	address	✓
nonce	bytes32	✓

AuthorizationUsed(authorizer: address, nonce: bytes32)

Name	Type	Indexed	Description
authorizer	address	✓
nonce	bytes32	✓

BlockPlaced(_user: address)

Name	Type	Indexed	Description
_user	address	✓

BlockReleased(_user: address)

Name	Type	Indexed	Description
_user	address	✓

Burn(from: address, amount: uint256)

Name	Type	Indexed	Description
from	address	✓
amount	uint256

DestroyedBlockedFunds(_blockedUser: address, _balance: uint256)

Name	Type	Indexed	Description
_blockedUser	address	✓
_balance	uint256

LogSetOFTContract(oftContract: address)

Name	Type	Indexed	Description
oftContract	address	✓

LogUpdateNameAndSymbol(name: string, symbol: string)

Name	Type	Indexed	Description
name	string
symbol	string

Mint(_destination: address, _amount: uint256)

Name	Type	Indexed	Description
_destination	address	✓
_amount	uint256

OwnershipTransferred(previousOwner: address, newOwner: address)

Name	Type	Indexed	Description
previousOwner	address	✓
newOwner	address	✓

Redeem(_amount: uint256)

Name	Type	Indexed	Description
_amount	uint256

Transfer(from: address, to: address, value: uint256)

Name	Type	Indexed
from	address	✓
to	address	✓
value	uint256