Encyclopedia Stablecoins · Entry 29
Crypto-backed stablecoins: debt, collateral and liquidation
In this article
At a glance
Key facts
| Fact | Detail | Source |
|---|---|---|
| Debt | Minting against a vault creates a debt obligation for its borrower. | [1] |
| Buffer | Collateral value relative to debt can fall when collateral prices fall. | [1][2] |
| Dependencies | Price feeds, auctions and governance affect the mechanism. | [1][2] |
The borrower and token holder have different roles
A vault lets a borrower lock an accepted asset and create a stablecoin-denominated debt. The borrower can spend the newly issued token, but still owes the debt and applicable fees. Someone who later buys that token does not inherit the borrower’s personal vault obligation.
To withdraw collateral safely, the borrower must satisfy the protocol’s debt and collateral rules. The token therefore circulates separately from the position that helped create it. A blockchain balance alone will not explain which collateral pools or borrowers support the wider system.
Work through a collateral ratio
In an illustrative vault, $200 of collateral supports 100 units of dollar debt, producing a 200% collateral ratio. If that collateral falls to $150 while debt remains 100, the ratio falls to 150%. Fees that increase debt can reduce the ratio even when the collateral price is unchanged.
These numbers are a teaching example, not live protocol parameters. A real vault has a specific collateral type, debt ceiling, minimum position size, liquidation threshold and fee schedule. A protocol can also include stablecoin or off-chain exposures, so a historical “crypto-backed” description may not capture its current portfolio.
The buffer gives liquidation room to work
Liquidation sells collateral to cover a position whose debt has become too large relative to its backing. The Sky documentation describes auction machinery with configurable prices and limits. Liquidators need a reason and a route to buy; collateral cannot repay debt simply because a formula says it has value.
An abrupt price gap, unreliable oracle, congested chain or thin market can undermine the process. The difference between a theoretical collateral value and cash actually realizable in a stressed sale matters. Governance and adapter permissions also remain part of the trust model, even when the accounting is visible on-chain.
Direct answers
Questions people ask
Does every collateralized stablecoin hold only crypto?
No. Inspect the actual asset categories. Sky’s June 2026 description includes stablecoins, lending and traditional-asset exposures as well as on-chain collateral.
Can excess collateral prevent every loss?
No. Liquidation depends on price data, software and an executable market for the collateral. A buffer can be exhausted.
Inspect the evidence
The answer and key facts have stable claim links. These records retain the scope and qualification when reused.
A crypto-backed stablecoin can be created by borrowing against crypto collateral locked in a protocol. A collateral buffer and liquidation process aim to keep debt covered as prices move. The mechanism depends on accurate prices, functioning contracts and buyers for collateral; overcollateralization is not a guarantee against loss.
Scope: Stablecoins · data through 2026-10-02. Verification: verified · 2026-10-02T15:09:00.630Z.
Link to this claimDebt: Minting against a vault creates a debt obligation for its borrower.
Scope: Stablecoins · data through 2026-10-02. Verification: verified · 2026-10-02T15:09:00.630Z.
Link to this claimBuffer: Collateral value relative to debt can fall when collateral prices fall.
Scope: Stablecoins · data through 2026-10-02. Verification: verified · 2026-10-02T15:09:00.630Z.
Link to this claimDependencies: Price feeds, auctions and governance affect the mechanism.
Scope: Stablecoins · data through 2026-10-02. Verification: verified · 2026-10-02T15:09:00.630Z.
Link to this claimRevision history
- — First publication after primary-source research and independent automated verification.
On the Inspect a stablecoin path · Learn next: Who can mint or redeem a stablecoin?
Source register
Sources and references
Retrieval dates and locators are recorded individually.- Vat: Core AccountingSky Protocol
Collateralized issuance, debt accounting, oracle and governance dependencies.
Locator: Vault Management; Failure Modes; Accounting · Version / scope: Response SHA-256 78db21089399df6c25df458f98d0129333f3e72138de185b96610fe82f0a74dd · Retrieved: 2026-10-02T14:38:38.888971+00:00Open source - Collateral LiquidationSky Protocol
Liquidation via collateral sales, parameters and failure modes.
Locator: Liquidation 2.0 module; Auctions · Version / scope: Response SHA-256 87c3e3e29ccffdca8cf63e766c29458e2bd58033852894bb347f9f7fdae53a5d · Retrieved: 2026-10-02T14:38:38.896399+00:00Open source - What is USDS?Sky.money / Skybase International
Dated 2026-06-12 description of diversified collateral and separate savings product; marketing assertions not independently audited.
Locator: How USDS holds its peg; Protocol Collateral; Does USDS generate yield? · Version / scope: Response SHA-256 3726cdd7e7b5e102192c9e0df4f87d2c7fc6dda8b0259152430012681ef85c1d · Retrieved: 2026-10-02T14:38:42.654541+00:00Open source
Research and drafting use AI assistance. A separate automated review checks claims against primary sources; no external expert or named human review is implied. Publication, substantive editing, source retrieval and verification are recorded separately. This version was independently checked by an automated reviewer on 2 October 2026.
Editorial method and correctionsDegrees of Satoshi editorial project. “Crypto-backed stablecoins: debt, collateral and liquidation.” Published 2026-10-02; updated 2026-10-02. https://degreesofsatoshi.com/encyclopedia/crypto-backed-stablecoins/