Hashnote USYC (US Yield Coin) is a yield-bearing tokenized instrument designed to bring short-term U.S. dollar assets and money market yield on-chain. Although USYC is often categorized as a yield-bearing stablecoin, its legal and economic structure differs from that of traditional stablecoins: the token represents an interest in the Hashnote International Short Duration Yield Fund Ltd. The fund's underlying strategy is primarily based on short-term U.S. government securities and reverse repo transactions backed by such assets. Following Circle's acquisition of Hashnote in 2025, USYC became part of a broader infrastructure connecting tokenized funds, USDC, and institutional blockchain settlement.
Contents
- What Is Hashnote USYC and How Does the Token Work?
- USYC Yield and How It Differs from Stablecoins
- USYC Blockchain Infrastructure, Issuance, and Redemption
- USYC Use Cases in DeFi and Institutional Markets
- Hashnote USYC Regulation, Restrictions, and Risks
1. What Is Hashnote USYC and How Does the Tokenized Fund Work?
USYC is an on-chain representation of the Hashnote International Short Duration Yield Fund Ltd., also known as SDYF. This means that a token holder does not simply own a digital asset designed to track the U.S. dollar, but rather a tokenized representation of an interest in an investment fund. This structure places USYC within the broader market for tokenized money market funds and real-world assets (RWA).
The fund primarily invests in short-term instruments linked to U.S. government debt. Its portfolio may include Treasury bills and reverse repo transactions backed by U.S. government securities. Income generated by these assets forms the economic basis of USYC's yield. Therefore, returns are derived mainly from traditional money markets rather than additional token issuance or DeFi staking.
Hashnote developed the product as a cash management instrument for participants in digital asset markets. In January 2025, Circle announced its acquisition of Hashnote. At the time of the announcement, USYC was among the largest tokenized products in the Treasury and money market asset segment. Following the acquisition, Circle began integrating USYC with its infrastructure, particularly USDC.
This distinction is important for understanding the project's model. USYC sits at the intersection of a traditional investment fund, RWA tokenization, and blockchain-based settlement. For this reason, describing it simply as a conventional yield-bearing stablecoin is not entirely accurate. Its value is linked to the fund's net asset value rather than being maintained through a fixed 1 USYC = 1 USD peg.
2. USYC Yield and How It Differs from Stablecoins
USYC's yield is generated by the underlying assets of SDYF. The fund uses short-term U.S. government instruments and reverse repo transactions, meaning that the strategy's performance is largely influenced by U.S. money market interest rates. Changes in the Federal Reserve's monetary policy can therefore affect the potential returns generated by these instruments.
Yield is reflected through an increase in the price of USYC. Users do not need to lock their tokens in a separate staking mechanism or regularly receive rewards in the form of additional assets. As the fund accumulates income, the calculated value of its shares increases, which is reflected in the corresponding token price. Fees associated with the fund structure must also be considered, meaning gross and net returns may differ.
| Parameter | USYC | Traditional USD Stablecoin |
|---|---|---|
| Economic Model | Tokenized fund interest | Digital representation of U.S. dollar value |
| Holder Yield | Reflected in the increasing token value | Usually not generated at the token level |
| Underlying Assets | Short-term government securities and reverse repo | Depends on the issuer's reserve model |
| Target Price | The value of the fund interest may gradually increase | Usually maintained around $1 |
| Access | Requires fund eligibility and KYC/AML compliance | Depends on the specific stablecoin and platform |
The increasing token value also distinguishes USYC from a rebasing token, where the number of units held in a wallet changes over time. This architecture allows USYC to function as a yield-bearing asset while retaining a standard token format suitable for blockchain infrastructure.
3. USYC Blockchain Infrastructure, Purchase, and Redemption
Tokenization brings the accounting and transfer of fund interests into a programmable blockchain environment. USYC has been implemented, among other formats, as an ERC-20 token on Ethereum, while the product's infrastructure has also expanded to other networks. Before Hashnote was acquired by Circle, USYC had already been integrated with Canton Network, which focuses on privacy and institutional financial applications. Circle subsequently continued expanding the infrastructure supporting the tokenized fund.
Holding USYC involves more than simply receiving the token at an arbitrary blockchain address. Because USYC represents an interest in a fund, investors must complete an eligibility process that includes KYC/AML checks. Once approved, the investor's wallet address is added to an allowlist. This permissioned structure differentiates USYC from freely transferable DeFi tokens.
A typical USYC process includes the following steps:
- the investor completes identity verification and eligibility checks;
- an approved blockchain address is added to the list of permitted wallets;
- USDC is used to subscribe to the fund;
- the funds enter the fund structure and are deployed according to its investment strategy;
- the corresponding amount of USYC is issued to the approved address;
- when USYC is redeemed, the investor can receive USDC subject to available liquidity and the terms of the product.
One of the notable features of USYC is the ability to conduct transactions outside traditional banking hours. Circle supports round-the-clock subscriptions and redemptions, while transactions within available instant liquidity can be processed close to real time. Larger redemptions may depend on the fund's liquidity and can settle on a T+0 or T+1 basis. This structure combines traditional underlying assets with the settlement speed of digital markets, although liquidity should not be considered unlimited under all conditions.
4. USYC Use Cases in DeFi, Trading, and Liquidity Management
One of USYC's primary use cases is holding capital that needs to remain liquid while generating yield. Institutional participants in digital asset markets face a specific challenge: a conventional stablecoin is convenient for settlement, but it does not necessarily pass the income generated by reserve assets directly to holders. A traditional money market fund can generate returns, but its infrastructure is typically tied to banking hours and conventional settlement cycles. USYC is designed to combine elements of these two models.
Another use case is collateral. USYC has been integrated into professional crypto trading infrastructure and can be used as a collateral asset. For example, the token was added as collateral on Deribit. This allows traders to hold part of their collateral in an instrument whose value reflects money market yield instead of keeping all collateral in non-yield-bearing digital cash.
Following the acquisition of Hashnote, Circle identified the integration of USYC and USDC as one of the directions for the product's development. USDC serves as a liquid settlement asset, while USYC is designed for allocating capital to a yield-bearing position. Efficient conversion between these instruments can potentially help treasuries, brokers, custodians, and trading firms reduce the amount of time their funds remain outside yield-generating strategies.
Programmability also creates opportunities for automated collateral management. Smart contracts can potentially use tokenized assets in settlement, margin, and treasury operations without requiring participants to return fully to traditional banking infrastructure after every transaction. However, the actual functionality of each integration depends on the blockchain network, platform, wallet permissions, and the rules of the fund.
5. Hashnote USYC: Regulation and Risks
USYC's legal structure is an important factor when evaluating the product. The token represents an interest in a mutual fund registered in the Cayman Islands. Following Hashnote's integration into Circle, USYC-related functions are handled by Circle International Bermuda Limited, which operates within the regulatory framework of the Bermuda Monetary Authority.
USYC is not available to every participant in the crypto market. Investors must meet applicable eligibility requirements, complete KYC/AML procedures, and use an allowlisted wallet address. Restrictions also apply to U.S. Persons under applicable U.S. securities laws, alongside other potential requirements. As a result, USYC differs significantly in accessibility from USDC and many decentralized stablecoins.
USYC's yield is not fixed and depends on money market conditions. Investors should also consider counterparty and operational risks associated with financial intermediaries and reverse repo transactions, as well as smart contract, blockchain infrastructure, and technical integration risks. Redemption speed depends on available liquidity, meaning that near-instant conversion cannot be guaranteed for every transaction size or under all market conditions.
USYC combines characteristics of a traditional money market fund with a tokenized RWA. Its integration with USDC, potential use as collateral, and blockchain-based settlement make it primarily relevant to institutional market participants. When evaluating USYC, investors should consider access restrictions, variable yield, liquidity conditions, and the risks associated with both financial and blockchain infrastructure.
