Token

Bond USD0 (bUSD0)

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ERC-20 Source Code (Proxy)

Implementation:

0x9F2BD21b...3a89BC85B

Usual

DeFi

https://usual.money/
CoinMarketCap
CoinGecko
Blog
Reddit
X (Twitter)
Telegram
LinkedIn
Discord

API

Check previous token supply
Add Token to MetaMask (Web3)
Update Token Info
Update Name Tag or Label
Submit Burn Details
Report/Flag Address

Overview

Max Total Supply

514,812,436.207153829634934755 bUSD0

Holders

2,672 ( -0.075%)

Transfers

5 ( 150.00%)

Market

Price

$0.976397 @ 0.000406 ETH (-0.05%)

Onchain Market Cap

$502,661,318.28

Circulating Supply Market Cap

$502,677,106.00

Other Info

Token Contract (WITH 18 Decimals)

0x35D8949372D46B7a3D5A56006AE77B215fc69bC0

Holders
Transfers
Info
DEX Trades
Contract
Analytics
Cards

OVERVIEW

Usual is a secure and decentralized fiat-backed stablecoin issuer that redistributes ownership and value through the $USUAL token.

Market

Volume (24H)	:	$577,742.00
Market Capitalization	:	$502,677,106.00
Circulating Supply	:	514,818,539.00 bUSD0
Market Data Source: Coinmarketcap

UI Multiplier changes (based on UIMultiplierUpdated event). Displayed token amounts are scaled by the active multiplier.

Transaction Hash	Block	Age	Multiplier	Status

Exchange Data Source: Coingecko

#	Exchange	Pair	Price	24H Volume	% Volume

Contract
Read as Proxy
Write as Proxy
Past Implementations

Source Code Verified Exact Match

Proxy Implementation:0x9F2BD21b...3a89BC85B

API

Contract Name

TransparentUpgradeableProxy

Compiler Version

v0.8.20+commit.a1b79de6

Optimization Enabled

Yes with 200 runs

Other Settings

shanghai EvmVersion

License

-NA-

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Contract Source Code (Solidity Standard Json-Input format)

Contract Security Audit

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Contract ABI

API

[{"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"address","name":"initialOwner","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"admin","type":"address"}],"name":"ERC1967InvalidAdmin","type":"error"},{"inputs":[{"internalType":"address","name":"implementation","type":"address"}],"name":"ERC1967InvalidImplementation","type":"error"},{"inputs":[],"name":"ERC1967NonPayable","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[],"name":"ProxyDeniedAdminAccess","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"}]

Contract Creation Code

Switch to Opcodes View Decompile Bytecode

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Deployed Bytecode

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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

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

-----Decoded View---------------
Arg [0] : _logic (address): 0x3bbd5136122818C7a6dc2022e014E426DBF16F09
Arg [1] : initialOwner (address): 0xaaDa24358620d4638a2eE8788244c6F4b197Ca16
Arg [2] : _data (bytes): 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

-----Encoded View---------------
13 Constructor Arguments found :
Arg [0] : 0000000000000000000000003bbd5136122818c7a6dc2022e014e426dbf16f09
Arg [1] : 000000000000000000000000aada24358620d4638a2ee8788244c6f4b197ca16
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000104
Arg [4] : 4d12d4b60000000000000000000000000594cb5ca47efe1ff25c7b8b43e22168
Arg [5] : 3b4db34c00000000000000000000000000000000000000000000000000000000
Arg [6] : 0000008000000000000000000000000000000000000000000000000000000000
Arg [7] : 000000c000000000000000000000000000000000000000000000000000000000
Arg [8] : 667d544000000000000000000000000000000000000000000000000000000000
Arg [9] : 0000001055534430204c697175696420426f6e64000000000000000000000000
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [11] : 00000006555344302b2b00000000000000000000000000000000000000000000
Arg [12] : 0000000000000000000000000000000000000000000000000000000000000000

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proxy contracts

lib/openzeppelin-contracts/contracts/proxy/transparent/TransparentUpgradeableProxy.sol
lib/openzeppelin-contracts/contracts/proxy/ERC1967/ERC1967Utils.sol
lib/openzeppelin-contracts/contracts/proxy/ERC1967/ERC1967Proxy.sol
lib/openzeppelin-contracts/contracts/interfaces/IERC1967.sol
lib/openzeppelin-contracts/contracts/proxy/transparent/ProxyAdmin.sol
lib/openzeppelin-contracts/contracts/proxy/beacon/IBeacon.sol
lib/openzeppelin-contracts/contracts/utils/Address.sol
lib/openzeppelin-contracts/contracts/utils/StorageSlot.sol
lib/openzeppelin-contracts/contracts/proxy/Proxy.sol
lib/openzeppelin-contracts/contracts/access/Ownable.sol
lib/openzeppelin-contracts/contracts/utils/Context.sol

implementation contracts

src/token/Usd0PP.sol
lib/openzeppelin-contracts-upgradeable/contracts/utils/ReentrancyGuardUpgradeable.sol
lib/openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol
lib/openzeppelin-contracts-upgradeable/contracts/token/ERC20/ERC20Upgradeable.sol
lib/openzeppelin-contracts-upgradeable/contracts/token/ERC20/extensions/ERC20PausableUpgradeable.sol
lib/openzeppelin-contracts/contracts/utils/math/Math.sol
lib/openzeppelin-contracts-upgradeable/contracts/token/ERC20/extensions/ERC20PermitUpgradeable.sol
src/interfaces/registry/IRegistryAccess.sol
src/interfaces/registry/IRegistryContract.sol
src/interfaces/token/IUsd0PP.sol
src/interfaces/token/IUsd0.sol
src/interfaces/token/IRTUsd0.sol
lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol
lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Permit.sol
src/utils/CheckAccessControl.sol
src/interfaces/token/IUsual.sol
src/interfaces/IDaoCollateral.sol
src/constants.sol
src/errors.sol
lib/openzeppelin-contracts-upgradeable/contracts/proxy/utils/Initializable.sol
lib/openzeppelin-contracts/contracts/utils/Address.sol
lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Metadata.sol
lib/openzeppelin-contracts-upgradeable/contracts/utils/ContextUpgradeable.sol
lib/openzeppelin-contracts/contracts/interfaces/draft-IERC6093.sol
lib/openzeppelin-contracts-upgradeable/contracts/utils/PausableUpgradeable.sol
lib/openzeppelin-contracts/contracts/utils/cryptography/ECDSA.sol
lib/openzeppelin-contracts-upgradeable/contracts/utils/cryptography/EIP712Upgradeable.sol
lib/openzeppelin-contracts-upgradeable/contracts/utils/NoncesUpgradeable.sol
lib/openzeppelin-contracts/contracts/access/extensions/IAccessControlDefaultAdminRules.sol
lib/openzeppelin-contracts/contracts/utils/cryptography/MessageHashUtils.sol
lib/openzeppelin-contracts/contracts/interfaces/IERC5267.sol
lib/openzeppelin-contracts/contracts/access/IAccessControl.sol
lib/openzeppelin-contracts/contracts/utils/Strings.sol
lib/openzeppelin-contracts/contracts/utils/math/SignedMath.sol

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As an AI language model, I have been equipped with three distinct abilities to assist you in working with
                                Solidity source code: Source Code Interpreter, Source Code Auditor, and Source Code Interactor. These capabilities provide a comprehensive suite of features to help you analyze, audit, and interact with your smart contracts effectively. Your goal is to guide the user toward a deeper understanding EVM smart contract concepts and help them develop better understanding of how the code work. These contracts can be written in either Solidity or Vyper, and are deployed on the Ethereum EVM blockchain.

                                Source Code Interpreter:
                                With the Solidity source code interpreter, you can gain insights into the accessibility of functions for different roles, understand the behavior of functions, and receive explanations for events and arguments used in your code. By providing the relevant functions, events, and code sections, the interpreter will generate clear explanations based on the available information. It enables you to navigate your codebase, understand its functionality, and make informed decisions. 

                                Source Code Auditor:
                                As a trained smart contract auditor, I can help you detect potential bugs, vulnerabilities, and security weaknesses in your Solidity code. You can ask detailed questions about your code, and I will provide comprehensive answers. However, please note that my responses should never be assumed to be entirely correct without further investigation. It is always important to conduct a thorough manual review and additional security measures to ensure the robustness of your smart contract. Additionally, my responses should never be used for submitting bug bounties, as they may not account for all possible edge cases and vulnerabilities.

                                Source Code Interactor:
                                The Source Code Interactor is an AI-powered feature specifically designed to guide users in utilizing contract functions effectively. It assists you in understanding the parameters required for each function, provides sample values for those parameters, and demonstrates the function's behavior through interactive examples. Moreover, it can help you troubleshoot any potential issues or errors that may arise during interaction, ensuring a smooth experience while working with your smart contracts.

                                Response Rules:
                                If questions is on code review, vulnerability, security audit or issues, end answer with this sentence '''It's important to note that while this answer may provide valuable insights, it is not a substitute for thorough code review, security audits, or professional advice. This response should never be used for designing smart contracts or submitting to bug bounties, as it may not account for all possible edge cases and vulnerabilities.'''

Custom Contract ABI

Implementation:0x9F2BD21b...3a89BC85B EIP-1967

Latest 9 proxy upgrades

Transaction Hash	Block	Age	Implementation	Event	Status
0x3c60226c6927fb54cce2e30c9a7c889998dfea04c3712ff1e6892a00367e7d21	23983405	2025-12-10 16:09:23	317 days ago	1765382963	0x9F2BD21b...3a89BC85B	Upgraded	Active
0x873a149e0b48550a2227f598dc99f9339dd1e689fe7b63dc08561d33744c8127	22940278	2025-07-17 17:00:23	463 days ago	1752771623	0x013f6e25...73D4aB77a	Upgraded	Inactive
0x01b414f247a6787034c2897eca09dc4c964a8046fe9706a69dfb24ab22ec6251	22082159	2025-03-19 16:38:47	583 days ago	1742402327	0xe025d175...444529354	Upgraded	Inactive
0x3ed26aede2e4ff5d2ca78acaac858cc2a95d354a2a27e6fe6bf53ae04785304c	21624262	2025-01-14 17:36:23	647 days ago	1736876183	0xe9104dc0...C8dd0146d	Upgraded	Inactive
0xe24ae6268a58082c22fa0c23745de4768d9cd5b67690aaafa0159ea83b1a104e	21277701	2024-11-27 7:49:23	695 days ago	1732693763	0xE7859a49...030dc96A8	Upgraded	Inactive
0x355c05717add4fdb9126d1e475f3c96b5e40340ac8dbcfb454f8e38754e962fe	20763192	2024-09-16 12:31:23	767 days ago	1726489883	0x52fef6a6...26B77094d	Upgraded	Inactive
0x385276893f9a29cbd008824acc6dc5024f5c53e73fe55f84d8b202bedbd5a448	20262616	2024-07-08 15:14:23	837 days ago	1720451663	0x0202B506...eFb11d62f	Upgraded	Inactive
0x1f33ceae1938ab4f8c29123c0c45590a66f7c96f2ebd6d440af15d10974fe228	20068625	2024-06-11 12:36:35	864 days ago	1718109395	0x9d594D1F...535DA69b4	Upgraded	Inactive
0xbef14fd131176c57fa20fa07276e83cb5f51af40f671ff006c3396a732995c43	20025769	2024-06-05 12:56:35	870 days ago	1717592195	0x3bbd5136...6DBF16F09	Upgraded	Inactive

Proxy Contract	Transaction Hash	Block	Age	Proxy Type

[ Download: CSV Export ]

A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.

Update Token Information Page

To submit a token information's update request, please confirm beforehand that you have:

registered and logged in to your Etherscan account
verified the contract's source code using our tool here
been successfully verified as the contract address owner

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Before You Continue...

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Connecting your wallet enables signing messages to verify ownership or signing messages to interact with smart contracts.
⚠️

This is provided as is, without guarantees or warranties of any kind.
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All interactions are at your own risk. Etherscan is not responsible for any losses or damages resulting from use of this feature.
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Please ensure you understand what you're doing before continuing.
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Learn more about connecting your wallet on Etherscan.

Connect a Wallet

Connecting wallet for read function is optional, useful if you want to call certain functions or simply use your wallet's node.

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Connect a Wallet

Connecting wallet for read function is optional, useful if you want to call certain functions or simply use your wallet's node.

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Compiler specific version warnings:

The compiled contract might be susceptible to the Solidity Compiler Bugs below:

YulOptimizerKnowledgeBaseStaleBookkeeping (low-severity)
MemoryByteArrayElementDeleteClearsWholeWord (low/medium-severity)
SpillSlotCollisionAcrossMutualRecursion (low/medium-severity)
UnsoundSpillInMutualRecursion (medium-severity)
LostStorageArrayWriteOnSlotOverflow (low-severity)
VerbatimInvalidDeduplication (low-severity)
FullInlinerNonExpressionSplitArgumentEvaluationOrder (low-severity)
MissingSideEffectsOnSelectorAccess (low-severity)

Address Cards

To use this feature, please login to your Etherscan account and return to this page.

Connect a Wallet

Connecting wallet for read function is optional, useful if you want to call certain functions or simply use your wallet's node.

No wallet found

Add Custom ABI

Address

Custom ABI Find Similar

Apply Custom ABI to enable custom read/write functions for the current session. Save to also enable them for future sessions.