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$U stablecoin Whitepaper

Version 1.0

Last Updated: Dec 10, 2025

Executive Summary

$U: United layer of money

United Stables Limited is introducing a new stablecoin, $U, with the goal of redefining the global layer of money. $U will construct a new, unified layer of money by consolidating fragmented liquidity across diverse use cases, such as exchange trading, wealth management, and payment ecosystems. This initiative is designed to empower global financial inclusion.

From Nairobi to Silicon Valley, from human to AI agents, $U is for everyone — United, Inclusive, and Fluid.

Key Highlights

  • 1:1 USD and stablecoin Backing: Every $U token is intended to be 1:1 backed by the US dollar and USD-backed stablecoin through high quality liquid reserves held in segregated accounts.
  • Regulatory Clarity: Issued by United Stables Limited with cash reserves managed by United Stables Holding Limited or United Stables Limited, as applicable, under accredited Banks.
  • AI payment Ready Infrastructure: $U is the first native EIP-3009-enabled stablecoin designed for x402-powered payments on BNB Chain, works natively with ecosystem facilitators, $U helps shape the future of programmable and autonomous value transfer on BNB Chain.
  • Partner-Centric Model: Empowers our partners and investors like exchanges, market makers, wealth managers, and payment companies, and also individual users by consolidating liquidity and reducing friction in the process of using Money.
  • Privacy-Enhanced for Enterprise payment Use: $U is designed with a technically confidential balance feature. This functionality offers organizations the ability to protect sensitive financial details by keeping account balances confidential, while still ensuring transparency for transactions. Specifically, the visibility of the "from" and "to" addresses on-chain is maintained for compliance and auditing purposes.
  • Transparent and Auditable: Real-time Proof of Reserve and quarterly third-party audits ensure trust and accountability.
  • Stablecoin-Inclusive Reserve Model: $U embraces a flexible and inclusive approach by accepting both fiat and high-quality, audited stablecoins (such as USDC) as asset reserves. It significantly enhances accessibility and reduces friction and it aligns with our core mission of consolidating fragmented liquidity and accelerates the minting process, enabling near-instant issuance for users.
  • Fully liquid assets backed: $U is intended to be backed by high-liquidity cash and top tier stablecoins. $U's stability is grounded in real reserves, multi-venue market depth, and transparent redemption channels. $U is built to maintain stability and reliable liquidity through a conservative reserve portfolio and transparent redemption framework. Even when markets become volatile, our structure is designed to support orderly redemptions and preserve user confidence.

Overview

We stand at the threshold of a profound transformation. The future, as we envision it, is "fluid"—a world where connections flow seamlessly between humans and humans, humans and AI, creating a fluid network of value exchange that transcends traditional boundaries.

In this emerging landscape, blockchain technology is reshaping production relationships, while artificial intelligence is amplifying productivity to unprecedented levels. Unlike previous industrial revolutions that deepened inequality, this new era—powered by AI, blockchain, and digital currencies—offers an opportunity to rewrite the rules. Money, in its new digital form, has the potential to become the universal bridge connecting every person and every AI agent across the globe.

$U is designed to be the embodiment of this new Money. We recognize that the stablecoin landscape is competitive. However, competition among currencies, including stablecoins, drives innovation and serves the greater good. Our approach is fundamentally different: rather than competing in isolation, we partner with centralized exchanges, decentralized finance ecosystems, wealth management institutions, and payment companies to consolidate fragmented liquidity and create a unified value layer.

$U aims to create the most United stablecoin layer and empower the ecosystem partners and every individual, regardless if you are human or AI. Our mission is to empower our most critical ecosystem partners—exchanges (both CEX and DEX), wealth managers, and payment providers—by aggregating dispersed liquidity and enabling broad global access (where permitted by applicable law) to access and use this new form of money in the simplest, most cost-effective, and most empowering way possible.

From a street vendor in São Paulo to a farmer in a Nigerian marketplace, from a Silicon Valley startup to an autonomous AI agent executing transactions on behalf of its creator—$U is for everyone. This proposal outlines our vision, mechanism, ecosystem design, and the path forward to make $U the united and universal stablecoin for the interconnected future.

Problem Statement

The global financial system is undergoing a fundamental transformation. As digital assets become increasingly integrated into mainstream finance, a critical gap has emerged: the lack of a truly unified, accessible, and efficient medium of exchange that serves both traditional and emerging financial ecosystems.

Today's financial landscape is characterized by fragmentation. Liquidity is scattered across countless platforms, currencies, and protocols. Users face friction at every turn—high transaction costs, slow settlement times, complex interfaces, and limited interoperability. Traditional financial institutions struggle to bridge the gap between legacy systems and blockchain-based infrastructure. Meanwhile, emerging technologies such as AI are creating new economic agents that require seamless, programmable access to financial services.

The proliferation of competing stablecoins has not solved this problem. Many suffer from opacity regarding reserves, regulatory uncertainty, or limited adoption. Others prioritize complexity over usability, creating barriers rather than bridges.

$U exists to solve this problem.

We believe that the future of finance requires a stablecoin that is transparent, secure, and universally accessible—one that consolidates fragmented liquidity and empowers everyone, from individual users to institutional partners, from human traders to AI agents. Our vision is simple: $U for everyone. We are building a "fluid" future—an interconnected financial ecosystem where value flows freely, and no one is left behind.

Our Vision: A Fluid Future and consolidated liquidity

We believe the future is fluid—a world characterized by seamless, interconnected relationships between humans and AI, enabled by blockchain and digital currencies. In this fluid future, production relationships are improved by decentralized technologies, and productivity is amplified by artificial intelligence. Unlike past industrial revolutions that exacerbated inequality, this new era offers the potential to democratize access to financial tools and opportunities. Money, in its digital form, will serve as the bridge connecting every individual and AI agent across the globe. $U is designed to be the representative of this new Money—universal, united, accessible, and empowering.

Our Differentiation

While the stablecoin market is crowded, $U distinguishes itself through:

  • Liquidity Consolidation: Partnering with CEXs, DEXs, Market makers, wealth managers, and payment providers to aggregate fragmented liquidity.
  • Stablecoin inclusive: Accepting USDC, USDT as reserve assets.
  • Partner Empowerment: Enabling ecosystem partners to offer superior services by providing a unified, stable value layer.
  • Universal Accessibility: Designed for everyone—from Institutions, to the individuals, and the AI agents.
  • AI-First Design (in Phase II): Built for the age of autonomous agents, with programmability and smart contract integration at its core.

Introduction to the Issuer and the Stablecoin

Information about the Issuer

United Stables Limited is a company incorporated in the British Virgin Islands. It issues the stablecoin $U (United Stablecoin) which aims to consolidate the fragmented liquidity, empower institutions and individuals to enjoy financial freedom.

Information about the stablecoin

$U is a US dollar and USDC backed stablecoin, with reserves held as cash in bank accounts and equivalent USDC maintained with an institutional digital asset custody provider, intended to support a 1:1 backing and transparency. Reserve management and custody arrangements may evolve over time to reflect operational, regulatory, and market considerations.

Minting and redemption remain subject to operational, banking, regulatory, and market constraints. Reserve assets are held by United Stables Holdings Limited and United Stables Limited in segregated accounts, but no statutory trust or fiduciary relationship is created unless expressly established under separate binding documentation.

United Stables Limited has not obtained registration or licensing for $U under the following regulatory regimes: the Stablecoins Ordinance of Hong Kong (Chapter 656), the United States GENIUS Act of 2025, the Securities Act of 1933 of the United States (as amended), or any securities laws of any U.S. state or other U.S. or Hong Kong jurisdiction.

In addition, $U is not an e-money token or asset-referenced token approved under Regulation (EU) 2023/1114 on Markets in Crypto-Assets (MiCA). Accordingly, $U may be subject to restrictions on marketing, trading, or availability within the European Economic Area (EEA), as it may not be offered to the public or admitted to trading under MiCA.

Consequently, $U and all associated products and services referenced in this document are not directed at, and may not be accessed or used by, any individual or entity located in, incorporated in, or otherwise subject to the jurisdiction of, the United States. This document, including its contents and any reproductions, shall not be distributed, published, transmitted, or otherwise made available—whether directly or indirectly—in or into the United States, or to any U.S. persons or entities.

Reserve and the Custody arrangement

United Stables Limited engages United Stables Holdings Limited to maintain and administer the cash reserves of $U, which are intended to be maintained in accounts separate from United Stables Limited's operational funds. Certain reserve assets may be temporarily held by United Stables Limited, provided such assets are accounted for within the overall reserve framework.

United Stables Holdings Limited is a company registered in the Cayman Islands in 2025. The cash reserve is held in accounts across various reputable, regulated financial institutions, and the USDC reserve is custodian by Ceffu, a regulated digital assets custody provider for institutions. Neither United Stables Limited nor United Stables Holdings Limited guarantees the solvency, performance, or operational continuity of any banking or custody partner.

The $U Ecosystem

Ecosystem Participants

The $U ecosystem is a multi-stakeholder network designed to create value for all participants. Users (Individuals and Institutions) can enjoy $U's stability, liquidity, and low transaction costs.

Our ecosystem partners are the backbone of $U's value proposition. They include but are not limited to:

  • Centralized Exchanges (CEX): Major trading platforms that list $U and provide deep spot and derivatives liquidity.
  • Decentralized Exchanges (DEX): DeFi protocols that integrate $U into liquidity pools and AMMs (automated market makers).
  • Other Financial Institutions: Asset managers, Market Makers, mining pools, liquid staking and leading protocols that use $U for portfolio construction, mining, staking, lending, and yield generation.
  • OTC desks: Institutional trading desks that facilitate large-block trades and use $U for settlement.
  • Payment institution: Fintech platforms and payment processors that leverage $U for cross-border remittances and merchant settlements.
  • Third-Party Auditors: Leading audit firms conduct quarterly attestations to verify that $U is fully backed by reserves.

Minting and Redemption Mechanism

All minting and redemption requests are subject to AML/KYC/KYB verification, sanctions screening, and approval in accordance with applicable laws and internal policies. Processing times may vary and are dependent on banking partner availability, blockchain network conditions, and compliance reviews.

Minting Process (from Fiat to $U)

Eligible institutions can mint $U by depositing USD (more other currencies will be added soon) into an account designated by United Stables Holdings Limited or United Stables Limited for the purposes of reserve management. The process involves:

  1. Request Initiation: User submits a minting request.
  2. KYB/AML Verification: Compliance checks are conducted in accordance with applicable regulations.
  3. Asset Transfer: Transfers USD to the designated account.
  4. Reserve Allocation: Upon confirmation of USD receipt, an equivalent amount of reserve assets is allocated.
  5. Token Issuance: Users's $U tokens are minted on the designated blockchain and transferred to the user's whitelisted wallet address.
  6. Confirmation: User is notified upon successful completion of the mint and confirms receipt on-chain.

Minting process (from other stablecoins to $U)

Institutions can mint $U by depositing approved USD-backed stablecoins, subject to verification, validation, and acceptance by United Stables Limited, to the address designated by United Stables Limited. The process involves:

  1. Request & Address Verification: User submits a mint request and provides the blockchain address that will receive the newly minted $U.
  2. KYB/AML Verification: Compliance checks are conducted in accordance with applicable regulations.
  3. Asset Transfer: User deposits approved USD-backed stablecoins from a whitelisted funding address to designated wallet address.
  4. Reserve Allocation: Upon confirmation of USD-backed stablecoin receipt, the corresponding reserve assets are allocated and recorded.
  5. Token Issuance: $U tokens are minted on the designated blockchain and transferred to the user's whitelisted wallet address.
  6. Confirmation: User is notified upon successful completion of the mint and confirms receipt on-chain.

Minting is not available to users in jurisdictions where access to $U is restricted or prohibited. Supported stablecoins and accepted blockchains may be updated from time to time.

Redemption Process (from $U to Fiat)

Eligible institutions can redeem $U for USD (more other currencies will be added soon). The process involves:

  1. Request Initiation: User transfers $U to the designated redemption address.
  2. Verification: United Stables Limited verifies the transaction and initiates the redemption process.
  3. Reserve Release: Subject to approval, United Stables Limited or United Stables Holdings Limited liquidate reserve assets to facilitate redemption.
  4. Fiat Transfer: USD is transferred to the institution's bank account, and the corresponding $U tokens may be burned upon completion of the redemption.
  5. Confirmation: User is notified when the USD has been transferred and confirms receipt.

Redemption process (from $U to other stablecoins)

Eligible institutional users may request to redeem $U for approved USD-backed stablecoins, subject to verification, liquidity conditions, and acceptance by United Stables Limited. The process involves:

  1. Redemption Request & Address Verification: User submits a redemption request and the receiving wallet address for the stablecoins.
  2. Transfer of $U for Redemption: User transfers $U to the designated redemption address.
  3. Verification: Upon confirmation of receipt, United Stables Limited validates the transferred amount and liquidates reserve assets to facilitate redemption.
  4. Stablecoin Transfer: Stablecoin is transferred to the user's whitelisted receiving address and the corresponding $U tokens may be burned upon completion of the redemption.
  5. Confirmation: User is notified when the stablecoins have been transferred and confirms receipt.

Redemptions are not available to users in jurisdictions where access to $U is restricted or prohibited.

Minting and Redemption Fee

To ensure sustainability, a nominal minting and redemption fee may apply. United Stables Limited may, at its discretion, adjust minting or redemption fees, including offering promotional or volume-based fee reductions. Fees are subject to change without prior notice.

Reserve Integrity and Transparency

Reserve Composition

$U reserves are intended to consist primarily of premium-grade, highly liquid USD-denominated assets designed to support stability and robust liquidity. The fiat reserve portfolio comprises two primary asset categories: cash holdings (including fiat currency held in bank accounts, and short-maturity time deposits with terms under 90 days) and short-term U.S. Treasury securities with maturities not exceeding six months. Treasury holdings are structured using a laddered maturity approach, which provides consistent liquidity while optimizing reinvestment opportunities and maintaining a balanced maturity profile across the portfolio.

This conservative asset allocation strategy prioritizes capital preservation and liquidity over yield generation. This conservative strategy prioritizes capital preservation and liquidity, with the objective of supporting orderly redemption processes.

The reserve composition and management strategy may evolve over time in response to regulatory, operational, and market considerations.

Reserve Management Framework

United Stables Limited employs a comprehensive reserve management framework designed to promote the security and liquidity of $U reserves.

Asset Eligibility Criteria

Reserve assets are generally selected based on criteria relating to credit quality, liquidity, and maturity. United Stables Limited seeks to prioritize assets that can typically be liquidated within 24–48 hours under normal market conditions.

Concentration Limits

To mitigate counterparty risk, no single financial institution or asset class may account for more than 25% of total reserves.

Liquidity Requirements and Stress Testing

United Stables intends to maintain a minimum liquidity buffer of 10% of outstanding $U in overnight cash to meet immediate redemption requests. Regular stress tests simulate extreme market conditions to ensure resilience.

Rebalancing Frequency

The reserve portfolio is rebalanced weekly to maintain target asset allocation and liquidity levels.

Engagement of Investment Managers

United Stables Holdings Limited and United Stables Limited may engage professional investment managers to support reserve oversight and management.

Custody and Segregation

Reserve Administration Structure

$U cash reserves are administered primarily by United Stables Holdings Limited, an entity in process to be registered as a 'Registered Person' under the Securities Investment Business act in the Cayman Islands, which is responsible for administering the reserve accounts associated with $U. In certain circumstances and for operational purposes, United Stables Limited may also hold portions of the cash reserves directly. Reserves are held in segregated bank accounts under accredited banks, separate from United Stables Limited's and United Stables Holdings Limited operational funds. Stablecoins reserves are custody by Ceffu, a regulated digital assets custody provider for institutions.

Segregation of Assets

Reserve assets administered by United Stables Holdings Limited and United Stables Limited are intended to be maintained in accounts separate from operating funds. Such segregation is for operational purposes only and does not create a statutory trust, fiduciary duty, proprietary right, or priority claim in favour of $U holders. In an insolvency scenario, recovery of reserve assets would depend on applicable law and the specific legal arrangements in place at the time.

Audits and Transparency Reports

Real-Time Proof of Reserve

United Stables Limited publishes real-time or near real-time on-chain Proof of Reserve for the Stablecoin reserves, allowing users to independently verify that the circulating supply of $U is supported by corresponding reserve assets to the extent such assets are capable of on-chain verification.

Quarterly Third-Party Audits

Leading audit firms conduct quarterly attestations of $U reserves, both fiat and stablecoins. Audit reports are published on u.tech webpage and include:

  • Verification of total $U supply.
  • Confirmation of reserve asset composition and valuation.
  • Assessment of compliance with reserve management policies.

Use Cases

$U is designed to capture value across the entire digital asset ecosystem by serving as the foundational liquidity layer for five critical use cases: Trading, Wealth Management & DeFi, OTC & Institutional Settlement, Payments & Remittances, and AI-Powered Autonomous Systems. Our vision is to establish $U as the default stable currency across all major venues and applications, consolidating fragmented liquidity and becoming the infrastructure upon which the digital economy operates.

Trading: The Liquidity Foundation

Vision: Establish $U as the primary base currency across all major centralized and decentralized exchanges.

The global cryptocurrency trading market represents one of the largest opportunities for stablecoin adoption. Stablecoins account for 70-80% of all trading volume, serving as the essential bridge between fiat and crypto assets. Currently, this liquidity is fragmented across multiple stablecoins, creating inefficiencies and limiting capital velocity.

Our strategic approach focuses on comprehensive exchange listings across both centralized and decentralized venues, intended to offer superior liquidity depth and tighter spreads, creating a differentiated trading experience.

Wealth Management & DeFi: The Yield-Bearing Asset

Vision: Position $U as the foundational asset for lending, staking, and yield generation across DeFi protocols.

The DeFi ecosystem represents a rapidly growing market where stablecoins serve as the primary medium for lending, borrowing, and yield generation. As institutional capital increasingly enters DeFi, demand for compliant, transparent, and yield-bearing stablecoins continues to accelerate.

Strategic partnerships with yield aggregators will enable optimization of returns across multiple protocols simultaneously.

A critical growth driver for $U is to participate in new token sales, benefiting from price stability during subscription periods, instant settlement for token distribution, and borderless participation without banking friction. This positions $U as the standard currency for primary market access in the digital asset ecosystem, creating natural demand cycles as new projects launch and investors seek stable entry points.

OTC & Institutional Settlement: The Institutional Standard

Vision: Establish $U as the preferred settlement currency for large-block trades and institutional transactions.

The OTC market serves as the primary venue for institutional-scale transactions, accommodating hedge funds, family offices, corporations, and high-net-worth individuals. These trades require stable, compliant settlement currencies with deep liquidity and institutional-grade custody infrastructure.

$U may be used as a primary settlement currency for block trades, portfolio rebalancing, and cross-desk arbitrage. For institutional clients, $U seeks to provide transparent reserves verified through real-time Proof of Reserve and quarterly third-party audits, and deep liquidity facilitating large-scale transactions without market impact.

Beyond OTC trading, $U may be utilized by certain institutional platforms as part of their collateral for margin financing, support lending or financing arrangements where allowed, and provide unified account management across spot, derivatives, and DeFi positions. Corporate treasurers seeking crypto exposure or treasury diversification may use $U to hold stable reserve assets earning yield, execute international supplier payments, and deploy idle cash for superior returns compared to traditional bank accounts. This institutional adoption creates a virtuous cycle where corporate treasury usage drives broader payment adoption across supply chains and business networks.

Payments & Remittances: The Global Payment Rail

Vision: Position $U as a complement to traditional payment systems like SWIFT, dramatically reducing costs and settlement times for cross-border transactions.

The global cross-border payments market represents a massive opportunity where traditional rails such as SWIFT and correspondent banking suffer from significant inefficiencies—slow settlement times (3-5 days), high costs (3-7% including FX markups), and limited transparency. $U will serve as an alternative payment rail for both B2B (business-to-business) and B2C (business-to-consumer) transactions, offering fundamental improvements in speed, cost, and accessibility, by partnering with Stablecoin payment companies, wallets, payment networks and merchants.

Privacy-Enabled Institutional Payments

Beyond the core advantages of speed and cost efficiency, $U's privacy-enhanced features make it particularly well-suited for institutional payment scenarios where confidentiality is paramount. In use cases such as payroll processing, vendor payments, and executive compensation, both payers and recipients often require discretion to protect sensitive financial information.

Traditional blockchain transactions expose account balances and transaction histories to public scrutiny, creating potential risks including competitive intelligence leakage, employee privacy concerns, and security vulnerabilities. $U addresses these challenges through its technically confidential balance functionality, which allows transaction participants (from and to addresses) to remain visible for compliance and auditability, while keeping account balances private.

This capability is transformative for enterprises managing large-scale payment operations. For example, a multinational corporation processing payroll for thousands of employees can use $U to distribute salaries without revealing individual compensation levels or the company's total payroll obligations to competitors or malicious actors. Similarly, businesses making vendor payments can protect commercially sensitive information about supplier relationships and contract values, while maintaining full traceability through transparent transaction flows.

By combining instant settlement, low transaction costs, and enterprise-grade privacy, $U establishes a new standard for institutional payment rails that respects both operational efficiency and confidentiality requirements.

B2B Payments & Supply Chain Finance

For business-to-business payments, $U can facilitate manufacturers to pay overseas suppliers instantly, eliminating wire delays and capturing early payment discounts. Automated smart contract-based payments can trigger upon delivery confirmation, while supply chain finance platforms enable instant factoring and working capital optimization. Multinational corporations can move capital between subsidiaries in minutes rather than days, with transaction costs reduced by 10-50x compared to traditional banking channels. This represents a fundamental improvement over SWIFT in terms of speed (minutes vs. days), cost efficiency, transparency (real-time tracking vs. opaque correspondent chains), and availability (24/7 settlement vs. banking hours), subject to platform and integration specifics.

B2C Payments & Digital Commerce

For consumer-facing applications, online retailers can accept $U, enabling true global monetization without geographic payment restrictions. This unlocks new business models and revenue streams that were previously uneconomical due to high payment processing costs.

Cross-Border Remittances

The remittance sector represents a particularly compelling use case, serving hundreds of millions of migrant workers globally. By partnering with remittance providers and mobile money platforms, $U can reduce costs from 5-10% to under 1.5% while enabling instant settlement. Mobile money integrations provide last-mile cash-out capabilities, bringing financial services to unbanked populations in emerging markets. This creates both significant social impact and a large addressable market for $U adoption.

AI Agents: The Currency for Autonomous Systems

Vision: Establish $U as the native currency for AI agents and autonomous economic systems.

The AI agent economy represents one of the most transformative emerging trends in technology. Autonomous AI agents are increasingly managing economic activity across trading, portfolio management, supply chain optimization, and service procurement. These agents require programmable, instant, and borderless payment capabilities—precisely what stablecoins offer. $U is architectured to be EIP-3009–compliant, enabling gasless, signature-based authorization of token transfers.

This standard provides the foundational capability for x402-based payment flows on BNB Chain, where verified Facilitators can execute authorized transfers on behalf of users or AI agents.

Through this dual-layer integration — EIP-3009 at the token-contract level and x402 at the application-protocol level — $U becomes a native payment medium for autonomous and verifiable transactions across the emerging AI payment ecosystem.

Autonomous Trading & Financial Services

In the financial sector, AI agents can execute autonomous trading and portfolio management, with AI-driven hedge funds executing thousands of trades daily, algorithmic market makers providing liquidity across numerous trading pairs, and yield optimization bots automatically allocating capital to highest-return DeFi protocols. $U's programmable nature and instant settlement make it ideal for these high-frequency, automated operations where human intervention would create unacceptable latency.

AI Services & Micropayments

The AI services sector enables new business models through true micropayments. Research platforms can charge per API call or compute unit, autonomous content generation services can accept $U's low-cost structure unlocks entirely new revenue models for AI service providers.

Machine-to-Machine Commerce

The emerging machine-to-machine (M2M) commerce sector represents perhaps the most revolutionary application. Autonomous vehicles can pay for charging, tolls, parking, and maintenance without human intervention. Smart factories can procure raw materials from supplier AI agents based on real-time demand signals. IoT devices can purchase bandwidth, storage, and compute resources dynamically based on usage patterns—all settled instantly in $U. This creates the foundation for truly autonomous economic systems where machines transact directly with each other.

We are strategically partnering with leading AI platforms and development frameworks to integrate $U at the foundation of emerging autonomous economic zones—entire economic ecosystems operated by AI agents, including virtual worlds with AI-driven economies, decentralized autonomous corporations with AI management, and autonomous supply chains from raw materials to end consumers. As the AI agent economy matures over the coming decade, $U is positioned to serve as the fundamental currency layer enabling this transformation.

Technical Architecture

Multi-Chain Strategy

$U is deployed across multiple leading blockchains to maximize interoperability and accessibility. Currently $U is deployed natively on BNBChain.

Other Supported Blockchains:

  • Ethereum: The most widely adopted smart contract platform, offering deep liquidity and extensive DeFi integrations.
  • Solana: High-throughput blockchain optimized for low-cost, high-speed transactions.
  • Arbitrum: Layer 2 solution for Ethereum, offering scalability and reduced gas fees.
  • Other Additional Chains: Strategic expansion to other leading blockchains based on ecosystem demand.

Smart Contracts

Core Architecture

$U smart contracts implement the ERC-20 token standard (and equivalent standards on other chains), ensuring compatibility with wallets, exchanges, and DeFi protocols. Core functions include:

  • Minting: Authorized issuance of $U upon receipt of USD and/or USDT/USDC.
  • Burning: Destruction of $U upon redemption.
  • Transfer: Standard token transfers between addresses.
  • Pause/Freeze: Emergency controls to halt transfers in case of security threats or regulatory requirements.

Upgradeability and Emergency Controls

$U contracts are upgradeable via a transparent proxy pattern, allowing for seamless updates without changing the token address. Multi-signature wallets (4-of-6 quorum) control privileged functions, ensuring decentralized governance and security.

Security Audits

Independent Third-Party Audits

Prior to deployment, all $U smart contracts undergo comprehensive security audits by leading security and consultancy firms. Audit reports are publicly available on u.tech webpage.

Continuous Security Monitoring

Post-deployment, United Stables employs continuous monitoring tools to detect anomalies and potential security threats. A bug bounty program incentivizes white-hat hackers to identify vulnerabilities.

Disclaimer

Regulatory Status

United Stables Limited is incorporated in the British Virgin Islands as a BVI Business Company. The issuance, holding, and transfer of $U do not constitute a regulated activity under the Securities and Investment Business Act, 2010 ("SIBA"), and United Stables Limited is not licensed, authorised, or supervised by the Financial Services Commission of the British Virgin Islands or any other governmental authority.

United Stables Limited has not obtained registration or licensing for $U under the following regulatory regimes: the Stablecoins Ordinance of Hong Kong (Chapter 656), the United States GENIUS Act of 2025, the Securities Act of 1933 of the United States (as amended), or any securities laws of any U.S. state or other U.S. or Hong Kong jurisdiction.

Consequently, $U and all associated products and services referenced in this document are not directed at, and may not be accessed or used by, any individual or entity located in, incorporated in, or otherwise subject to the jurisdiction of, the United States. This document, including its contents and any reproductions, shall not be distributed, published, transmitted, or otherwise made available—whether directly or indirectly—in or into the United States, or to any U.S. persons or entities.

$U is not an e-money token or asset-referenced token approved under Regulation (EU) 2023/1114 on Markets in Crypto-Assets (MiCA). Accordingly, $U may be subject to restrictions on marketing, trading, or availability within the European Economic Area (EEA), as it may not be offered to the public or admitted to trading under MiCA.

United Stables Limited will not process any minting or redemption requests originating from, or made on behalf of, restricted or prohibited jurisdictions.

Nature of This Document

This Business Proposal is published for informational purposes only and does not constitute an offer or solicitation to purchase, sell, or subscribe for $U or any other financial instrument. This document is not a prospectus, offering memorandum, or contractual document, and should not be relied upon for investment, legal, tax or financial decisions. Any offer or solicitation can only be made through formal offering documents in compliance with applicable laws and regulations.

Redemptions

United Stables Limited seeks to maintain reserves designed to support redemptions of $U; however: redemption may be delayed, restricted, or suspended due to operational, regulatory, banking, market, or compliance requirements, and $U does not represent a claim, deposit, or debt obligation of United Stables Limited or any affiliate.

Holding $U does not entitle the holder to any interest, profits, dividends, voting rights, or ownership in United Stables Limited, United Stables Holdings Limited, or any related entity.

AML / Sanctions Compliance

All minting, redemption, and account-related activities are subject to customer due diligence, ongoing monitoring, and sanctions screening requirements under the laws of the British Virgin Islands. United Stables Limited may refuse, delay, or reverse any transaction where required for compliance with applicable AML, CFT, or sanctions obligations.

Technology and Smart Contract Risks

Blockchain networks, smart contracts, custody systems, and third-party service providers may experience vulnerabilities, cyber attacks, downtime, or failures. United Stables Limited does not guarantee uninterrupted access to $U or error-free operation of any related technology.

Banking and Custody Partner Risks

Reserve assets are held with third-party financial institutions and custody providers. United Stables Limited does not guarantee the solvency, performance, or operational continuity of any banking or custody partner, and is not liable for losses arising from their actions or failures.

No Priority or Insolvency Rights

Segregation of reserve accounts does not create a statutory trust or confer any priority rights in insolvency. Holders of $U do not have a proprietary, secured, or preferential right over reserve assets unless expressly provided in separate binding documentation.

No Reliance / No Guaranteed Features

References to future features, integrations, or ecosystem developments are forward-looking statements and may change without notice. No representation or warranty is made that any described functionality will be implemented.

Restricted Use

$U may not be used, held, or accessed in any jurisdiction where such activity would be unlawful. Users are responsible for ensuring compliance with all applicable laws.

No Advisory Relationship

United Stables does not provide legal, tax, or investment advice. Holders are solely responsible for assessing the suitability of $U for their individual circumstances and should consult with professional advisors as needed.

Forward-Looking Statements

This document may contain forward-looking statements regarding future development, features, or initiatives. These statements are aspirational and subject to change and should not be interpreted as commitments, guarantees, or assurances of future performance.

Document Updates

This document may be amended, supplemented, or updated at any time without prior notice. The most current version is available at u.tech.

3D Illustration

United Stables Limited has not obtained registration, authorization, or licensing for $U under any of the following regulatory regimes: the Markets in Crypto-Assets Regulation (MiCA) of the European Union, the Stablecoins Ordinance of Hong Kong (Chapter 656), the United States GENIUS Act of 2025, the Securities Act of 1933 of the United States (as amended), or any securities or stablecoin laws of any U.S., EU member state, or Hong Kong jurisdiction. Accordingly, United Stables Limited employs active geofencing and strict KYB controls to prevent the minting, marketing, or direct offering of $U to residents or entities in these restricted jurisdictions.

This website and the $U token are not intended for distribution to, or use by, any person or entity in any jurisdiction or country where such distribution or use would be contrary to local law or regulation. Specifically, $U is not being offered, sold, or distributed to residents or citizens of the United States, the European Union, or Hong Kong. Nothing on this website constitutes an offer to sell, a solicitation of an offer to buy, or a recommendation of $U as a security, investment product, or regulated payment stablecoin.