What is USDS (USDS)?

Quick Facts

  • Issuer: Sky Protocol (formerly MakerDAO)
  • Peg: Soft peg to the U.S. dollar
  • Predecessor: DAI stablecoin (1:1 upgrade path)
  • Launched: September 2024
  • Governance token: SKY (formerly MKR)
  • Available on: Ethereum, Base, Arbitrum, Solana
  • Key feature: Sky Savings Rate (SSR) via sUSDS

Introduction

USDS — short for StableUSD — is the flagship stablecoin of Sky Protocol, the evolved form of MakerDAO, one of DeFi's most established protocols. It is designed to maintain a stable value relative to the U.S. dollar while enabling permissionless, non-custodial savings and yield opportunities across the decentralized finance ecosystem.

USDS builds on the principles that made DAI a cornerstone of DeFi: decentralization, transparency, and stability — while adding improved scalability, multi-chain support, and built-in reward mechanisms.

History & Background

The story of USDS begins with DAI, launched in 2017 as the first major decentralized stablecoin. DAI pioneered overcollateralized crypto-backed stablecoins and became a trusted primitive across DeFi.

In 2024, MakerDAO rebranded as Sky Protocol to reflect a broader vision for decentralized finance. Shortly after, USDS launched as DAI's direct successor. Users can upgrade DAI to USDS at a 1:1 ratio through the Sky.money interface, with no deadline imposed for the migration.

How USDS Works

USDS maintains its dollar peg through overcollateralized vaults. Users lock up crypto assets — such as ETH — into a Collateralized Debt Position (CDP) and generate USDS against that collateral. To retrieve the locked assets, users repay the USDS plus a stability fee, which functions like interest and helps keep the peg stable.

The entire process is managed by smart contracts, with no central authority involved. Sky Protocol's governance-controlled parameters — including accepted collateral types and stability fees — are set by SKY token holders through on-chain voting.

Tokenomics

USDS is designed as a utility-first stablecoin. Its value derives from the collateral backing the system and the protocol's risk management framework. Users who supply USDS to the Sky Savings Rate (SSR) receive sUSDS, a yield-bearing version that auto-compounds returns with no lockups or fees.

SKY, the protocol's governance token, plays a complementary role: it is used for voting on protocol parameters and can be earned as a reward through Sky Token Rewards (STRs) programs.

Circulating supply ? 10.34 billion USDS
Total supply ? 10.34 billion USDS
Max supply ? -- USDS
Updated 4d ago

Ecosystem & Use Cases

USDS serves as the central asset of the Sky ecosystem. Core use cases include:

  • Saving: Deposit USDS to earn the Sky Savings Rate via sUSDS
  • DeFi Liquidity: Use USDS across exchanges, lending platforms, and yield vaults
  • Borrowing: Generate USDS by locking collateral, accessing liquidity without selling assets
  • Multi-chain Access: Available on Ethereum, Base, Arbitrum, and Solana via SkyLink
  • Rewards: Earn SKY tokens and ecosystem partner tokens through Sky Token Rewards

Team, Governance & Community

Sky Protocol is governed on-chain by SKY token holders, who vote on risk parameters, collateral types, savings rates, and protocol upgrades via the Sky Atlas governance framework. The protocol operates through a decentralized structure of contributors, Sky Agents (independent capital allocators), and community participants.

Sky Stars — independent sub-projects like Spark — are aligned with the Sky ecosystem and may distribute additional token rewards to USDS holders.

Advantages

  • Battle-tested foundation: Inherits MakerDAO's years of proven, secure operation
  • Non-custodial by design: Users retain full control of funds at all times
  • Built-in yield: The Sky Savings Rate offers variable stablecoin yield with no lockups
  • Multi-chain reach: Accessible across Ethereum, Base, Arbitrum, and Solana
  • Seamless migration: 1:1 upgrade path from DAI with no deadline pressure

Risks & Challenges

  • Smart contract risk: Bugs or exploits in the protocol's code could affect funds
  • Collateral risk: Sharp drops in collateral asset values can trigger liquidations
  • Variable yield: The Sky Savings Rate fluctuates and is not guaranteed
  • Governance risk: Malicious or poorly considered governance votes could alter protocol parameters
  • Regulatory uncertainty: Decentralized stablecoins face evolving regulatory scrutiny globally

Long-Term Vision

Sky Protocol aims to position USDS as a leading decentralized stablecoin across a multi-chain DeFi landscape. By expanding collateral options, growing the Sky Agent Network, and deepening integrations with Layer-2 networks, the protocol seeks to offer a scalable, community-governed alternative to both centralized stablecoins and earlier-generation decentralized models. The goal is a resilient, widely-adopted dollar-denominated asset for the open financial system.

Frequently Asked Questions

USDS, short for StableUSD, is the flagship decentralized stablecoin of Sky Protocol (formerly MakerDAO). It maintains a soft peg to the U.S. dollar and is used for saving, DeFi participation, and collateral-backed borrowing.

USDS is the direct successor to DAI, upgradeable at a 1:1 ratio. It adds enhanced stability mechanisms, multi-chain support, and built-in reward features like the Sky Savings Rate.

USDS is backed by overcollateralized crypto assets locked in smart-contract vaults. Stability fees and governance-controlled parameters help keep the peg aligned with the U.S. dollar.

The Sky Savings Rate is a variable yield earned by supplying USDS to the protocol in exchange for sUSDS, a yield-bearing stablecoin. The rate is governed by SKY token holders and managed by independent Sky Agents.

sUSDS is the yield-bearing version of USDS. When users supply USDS to the Sky Savings Rate, they receive sUSDS, which auto-compounds yield and remains fully liquid with no lockups or exit fees.

USDS is available on Ethereum, Base, Arbitrum, and Solana. Sky Protocol's SkyLink infrastructure is designed to further expand its multi-chain reach.

SKY is the governance token of Sky Protocol, replacing the earlier MKR token. SKY holders vote on protocol parameters and can earn SKY tokens as rewards by participating in the USDS ecosystem.

Yes, USDS can be converted back to DAI at a 1:1 ratio through the Sky.money interface. The upgrade and downgrade process is non-custodial and permissionless.