USDT0

Polygon PoS ERC-20 Token

0xc2132d05d31c914a87c6611c10748aeb04b58e8f

Proxy implementation: 0x90040487a6c9f949c4f07cadcfb0f3b8eeab4229

Solidity v0.6.6+commit.6c089d02

Fungible token following the ERC-20 standard.

🤖

Query this contract from your AI

Reference: usdt-polygon 0xc2132d05d31c914a87c6611c10748aeb04b58e8f

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

No AI wired up yet? → mcp.smarts.md

Admin & Risk

Who can change the rules?

Detected upgradeable, mintable, and role based controls from the verified ABI.

Upgradeable Mintable Role Based

Current controls

Implementation: 0x90040487a6c9f949c4f07cadcfb0f3b8eeab4229 ↗ Polygonscan → smarts proxy

Overview

Read Functions

Write Functions

Events

Read Functions

Block #87,395,556 · just now

BLOCK_ROLE() view → 0xefe866497efea00aa7574b13e86f62ebb584dfdf8dd4654ccc38107eb91840b8

Returns

Name	Type	Description
—	bytes32

DEFAULT_ADMIN_ROLE() view → 0x0000000000000000000000000000000000000000000000000000000000000000

Returns

Name	Type	Description
—	bytes32

DEPOSITOR_ROLE() view → 0x8f4f2da22e8ac8f11e15f9fc141cddbb5deea8800186560abb6e68c5496619a9

Returns

Name	Type	Description
—	bytes32

DOMAIN_SEPARATOR() view → 0x7b43b7deae87806d0ace67d6c8e9e347fc85db8ad198e756e5c17d126fef9a05

Returns

Name	Type	Description
—	bytes32

ERC712_VERSION() view → 1

Returns

Name	Type	Description
—	string

PERMIT_TYPEHASH() view → 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9

Returns

Name	Type	Description
—	bytes32

USDT0_VERSION() view → 1

Returns

Name	Type	Description
—	uint256

allowance(owner: address, spender: address) view

dev: See {IERC20-allowance}.

Parameters

Name	Type	Description
owner	address
spender	address

Returns

Name	Type	Description
—	uint256

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 {_setupDecimals} is called. 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

getChainId() pure → 137

Returns

Name	Type	Description
—	uint256

getDomainSeperator() view → 0x7b43b7deae87806d0ace67d6c8e9e347fc85db8ad198e756e5c17d126fef9a05

Returns

Name	Type	Description
—	bytes32

getNonce(user: address) view

Parameters

Name	Type	Description
user	address

Returns

Name	Type	Description
nonce	uint256

getRoleAdmin(role: bytes32) view

dev: Returns the admin role that controls `role`. See {grantRole} and {revokeRole}. To change a role's admin, use {_setRoleAdmin}.

Parameters

Name	Type	Description
role	bytes32

Returns

Name	Type	Description
—	bytes32

getRoleMember(role: bytes32, index: uint256) view

dev: Returns one of the accounts that have `role`. `index` must be a value between 0 and {getRoleMemberCount}, non-inclusive. Role bearers are not sorted in any particular way, and their ordering may change at any point. WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure you perform all queries on the same block. See the following https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] for more information.

Parameters

Name	Type	Description
role	bytes32
index	uint256

Returns

Name	Type	Description
—	address

getRoleMemberCount(role: bytes32) view

dev: Returns the number of accounts that have `role`. Can be used together with {getRoleMember} to enumerate all bearers of a role.

Parameters

Name	Type	Description
role	bytes32

Returns

Name	Type	Description
—	uint256

hasRole(role: bytes32, account: address) view

dev: Returns `true` if `account` has been granted `role`.

Parameters

Name	Type	Description
role	bytes32
account	address

Returns

Name	Type	Description
—	bool

isBlocked(address) view

Parameters

Name	Type	Description
—	address

Returns

Name	Type	Description
—	bool

name() view → USDT0

dev: Returns the name of the token.

Returns

Name	Type	Description
—	string

nonces(address) view

Parameters

Name	Type	Description
—	address

Returns

Name	Type	Description
—	uint256

oftContract() view → 0x6ba10300f0dc58b7a1e4c0e41f5dabb7d7829e13

Returns the OFT contract address (the address with DEPOSITOR_ROLE)

Returns

Name	Type	Description
—	address	The address of the OFT contract

supportsInterface(interfaceId: bytes4) view

dev: Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section] to learn more about how these ids are created. This function call must use less than 30 000 gas.

Parameters

Name	Type	Description
interfaceId	bytes4

Returns

Name	Type	Description
—	bool

symbol() view → USDT0

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

Returns

Name	Type	Description
—	string

totalSupply() view → 859,072,822.35 USDT0

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

changeName(name_: string) nonpayable

Parameters

Name	Type	Description
name_	string

changeSymbol(symbol_: string) nonpayable

Parameters

Name	Type	Description
symbol_	string

crosschainBurn(user: address, amount: uint256) nonpayable

Burn tokens through a crosschain transfer.

Parameters

Name	Type	Description
user	address	user address for whom burn is being done
amount	uint256	amount of tokens to burn

crosschainMint(user: address, amount: uint256) nonpayable

called when token is deposited on root chain

dev: Should be callable only by OAPP contract

Parameters

Name	Type	Description
user	address	user address for whom deposit is being done
amount	uint256	amount of tokens to mint

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

deposit(user: address, depositData: bytes) nonpayable

Parameters

Name	Type	Description
user	address
depositData	bytes

destroyBlockedFunds(_blockedUser: address) nonpayable

Parameters

Name	Type	Description
_blockedUser	address

executeMetaTransaction(userAddress: address, functionSignature: bytes, sigR: bytes32, sigS: bytes32, sigV: uint8) payable

Parameters

Name	Type	Description
userAddress	address
functionSignature	bytes
sigR	bytes32
sigS	bytes32
sigV	uint8

Returns

Name	Type	Description
—	bytes

grantRole(role: bytes32, account: address) nonpayable

dev: Grants `role` to `account`. If `account` had not been already granted `role`, emits a {RoleGranted} event. Requirements: - the caller must have ``role``'s admin role.

Parameters

Name	Type	Description
role	bytes32
account	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

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, v: uint8, r: bytes32, s: bytes32) nonpayable

Parameters

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

redeem(_amount: uint256) nonpayable

Parameters

Name	Type	Description
_amount	uint256

removeFromBlockedList(_user: address) nonpayable

Parameters

Name	Type	Description
_user	address

renounceRole(role: bytes32, account: address) nonpayable

dev: Revokes `role` from the calling account. Roles are often managed via {grantRole} and {revokeRole}: this function's purpose is to provide a mechanism for accounts to lose their privileges if they are compromised (such as when a trusted device is misplaced). If the calling account had been granted `role`, emits a {RoleRevoked} event. Requirements: - the caller must be `account`.

Parameters

Name	Type	Description
role	bytes32
account	address

revokeRole(role: bytes32, account: address) nonpayable

dev: Revokes `role` from `account`. If `account` had been granted `role`, emits a {RoleRevoked} event. Requirements: - the caller must have ``role``'s admin role.

Parameters

Name	Type	Description
role	bytes32
account	address

setOFTContract(_oftContract: address) nonpayable

Sets the OFT contract address by granting it the DEPOSITOR_ROLE

dev: Can only be called by accounts with DEFAULT_ADMIN_ROLE

Parameters

Name	Type	Description
_oftContract	address	The address of the OFT contract

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

upgradeToUSDT0(newAdmin: address, oftContract: address) nonpayable

Parameters

Name	Type	Description
newAdmin	address
oftContract	address

withdraw(uint256) nonpayable

Parameters

Name	Type	Description
—	uint256

Events

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

Name	Type	Indexed
owner	address	✓
spender	address	✓
value	uint256

BlockPlaced(_user: address)

Name	Type	Indexed	Description
_user	address	✓

BlockReleased(_user: address)

Name	Type	Indexed	Description
_user	address	✓

CrosschainBurn(from: address, amount: uint256, sender: address)

Emitted when a crosschain transfer burns tokens.

Name	Type	Indexed	Description
from	address	✓	Address of the account tokens are being burned from.
amount	uint256		Amount of tokens burned.
sender	address	✓	Address of the caller (msg.sender) who invoked crosschainBurn.

CrosschainMint(to: address, amount: uint256, sender: address)

Emitted when a crosschain transfer mints tokens.

Name	Type	Indexed	Description
to	address	✓	Address of the account tokens are being minted for.
amount	uint256		Amount of tokens minted.
sender	address	✓	Address of the caller (msg.sender) who invoked crosschainMint.

DestroyedBlockedFunds(_blockedUser: address, _balance: uint256)

Name	Type	Indexed	Description
_blockedUser	address	✓
_balance	uint256

LogSetOFTContract(oftContract: address)

Name	Type	Indexed	Description
oftContract	address	✓

MetaTransactionExecuted(userAddress: address, relayerAddress: address, functionSignature: bytes)

Name	Type	Indexed
userAddress	address	✓
relayerAddress	address	✓
functionSignature	bytes

Mint(_destination: address, _amount: uint256)

Name	Type	Indexed	Description
_destination	address	✓
_amount	uint256

Redeem(_amount: uint256)

Name	Type	Indexed	Description
_amount	uint256

RoleAdminChanged(role: bytes32, previousAdminRole: bytes32, newAdminRole: bytes32)

Name	Type	Indexed
role	bytes32	✓
previousAdminRole	bytes32	✓
newAdminRole	bytes32	✓

RoleGranted(role: bytes32, account: address, sender: address)

Name	Type	Indexed
role	bytes32	✓
account	address	✓
sender	address	✓

RoleRevoked(role: bytes32, account: address, sender: address)

Name	Type	Indexed
role	bytes32	✓
account	address	✓
sender	address	✓

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

Name	Type	Indexed
from	address	✓
to	address	✓
value	uint256