What is USDK (USDK)?

Quick Facts

  • Type: USD-pegged ERC-20 stablecoin
  • Issuers: Co-developed by OKLink and Prime Trust
  • Backing: Every USDK is backed 1:1 by USD held in a Prime Trust Special Account
  • Compliance: AML and KYC compliance handled by Prime Trust
  • Auditing: Monthly reports published by an independent audit firm
  • Blockchain: Ethereum (ERC-20 standard)
  • Parent company: OKLink is a subsidiary of OK Group

Introduction

USDK is a USD-pegged stablecoin built on the Ethereum blockchain. It was co-developed by OKLink, a global blockchain technology and settlement firm, and Prime Trust, a US-licensed trust company. The goal of USDK is to provide a compliant, transparent, and fully-reserved digital dollar for use across cryptocurrency exchanges and decentralized applications.

History & Background

USDK launched in 2019, initially listed on OKEx, one of the world's largest cryptocurrency exchanges. The partnership between OKLink and Prime Trust was publicly documented, with both companies signing a formal agreement that was shared openly. The token later expanded to other exchanges, including Bitfinex and OKCoin, broadening its reach within the crypto ecosystem.

OKLink, as a subsidiary of OK Group, brought blockchain infrastructure expertise to the project, while Prime Trust contributed regulatory and custodial credibility as a Nevada-registered trust company.

How USDK Works

USDK operates on the Ethereum blockchain as an ERC-20 token. Each token is minted to represent exactly one US dollar held in a Prime Trust Special Account. This 1:1 backing ensures the token's peg to the USD remains stable.

Prime Trust handles AML (Anti-Money Laundering) and KYC (Know Your Customer) compliance, ensuring the stablecoin meets regulatory requirements. An independent audit firm publishes monthly reserve reports, giving users ongoing transparency into the backing of each USDK in circulation.

Tokenomics

USDK follows a fully-reserved model, meaning every token issued is matched by an equivalent amount of USD in custody. There is no algorithmic mechanism or partial reserve — the design prioritizes stability and predictability.

Tokens are minted when users deposit USD and burned when they redeem their dollars. This elastic supply model keeps the peg intact and avoids inflationary pressure.

Circulating supply ? 488,711 USDK
Total supply ? 488,711 USDK
Max supply ? -- USDK
Updated 2d ago

Ecosystem & Use Cases

USDK is primarily used as a stable trading pair across exchanges, enabling users to move value without exposure to crypto volatility. Key use cases include:

  • Trading pairs on platforms like OKEx, OKCoin, and Bitfinex
  • Fiat-to-token (C2C) trading across multiple currencies
  • A building block for decentralized applications within the OKEx ecosystem

Team, Governance & Community

USDK is governed by the partnership between OKLink and Prime Trust. OKLink acts as the technology service provider, responsible for the smart contract infrastructure. Prime Trust manages custody, compliance, and fiat operations. The project does not use a decentralized governance model; decisions are made by the two issuing organizations.

Advantages

  • Full USD backing: Every token is 100% reserved with no fractional reserve risk
  • Regulatory compliance: AML and KYC standards enforced by a licensed US trust company
  • Transparency: Monthly independent audits provide public visibility into reserves
  • Broad exchange support: Listed on multiple major exchanges for wide accessibility

Risks & Challenges

  • Centralization: USDK relies on two centralized entities for issuance and custody
  • Counterparty risk: Users depend on Prime Trust's financial health and regulatory standing
  • Competition: The stablecoin market is dominated by USDT and USDC, limiting USDK's adoption
  • Regulatory exposure: Changes in US trust law or crypto regulation could affect operations

Long-Term Vision

USDK was designed to be a compliant, enterprise-grade stablecoin that bridges traditional finance and the crypto economy. Its long-term role is to serve as a reliable value transfer tool within the OKLink and OK Group ecosystem, supporting financial inclusion and blockchain-driven economic activity. As regulatory frameworks around stablecoins continue to mature, USDK's compliance-first approach positions it as a model for regulated digital dollar issuance.

Frequently Asked Questions

USDK is a USD-pegged stablecoin built on the Ethereum blockchain, co-developed by OKLink and Prime Trust. Each USDK is backed 1:1 by US dollars held in a Prime Trust Special Account.

USDK was co-developed by OKLink, a blockchain technology company and subsidiary of OK Group, and Prime Trust, a US-licensed trust company based in Nevada.

USDK maintains its peg through a fully-reserved model where every token is backed by an equivalent amount of USD in custody. Tokens are minted on deposit and burned on redemption.

Yes. An independent audit firm publishes monthly reserve reports to verify that every USDK in circulation is fully backed by USD, ensuring public transparency.

USDK can be traded on several major exchanges including OKEx, OKCoin, and Bitfinex. It also serves as a stable trading pair and is intended for use in decentralized applications within the OKEx ecosystem.

Yes. Prime Trust, a licensed US trust company, enforces AML and KYC compliance for USDK. This makes it one of the more regulation-focused stablecoins in the market.

USDK is an ERC-20 token issued on the Ethereum blockchain, with its smart contract developed by OKLink.

The primary risks include centralization, as the token depends on OKLink and Prime Trust, and counterparty risk tied to Prime Trust's financial and regulatory standing. Competition from larger stablecoins like USDT and USDC also limits its market reach.