Chainlink's explainer, last updated Feb. 11, 2026, defines algorithmic stablecoins as digital assets whose software rules balance circulating supply with market demand, usually against a $1 target. They pursue that target with code rather than cash reserves. BitGo warns that under sustained selling pressure, the mechanisms designed to restore the peg can instead speed up a collapse. Above $1, the protocol creates more tokens to bring the price down. Below $1, it shrinks supply, often by burning tokens or issuing bonds.
Key facts from Chainlink and BitGo
- Usual target: The U.S. dollar.
- Backing: Typically none, or less than full collateral.
- Main stress risk: Sustained selling can make the peg defenses accelerate a collapse.
Why defending the peg can speed up a collapse
Allium's explainer, with data last reviewed Sept. 23, 2026, traces the problem to two-token designs. In these, a second token, called the absorber token, works alongside the stablecoin. When the stablecoin trades below $1, anyone can burn one stablecoin and receive $1 worth of the absorber token. That pulls stablecoins out of circulation. The same step also creates new absorber tokens. It calls this the fatal weakness. In its words, "defending a falling stablecoin means printing more of the absorber token, which dilutes it."
Chainlink names the outcome it calls the "death spiral." With no hard reserves behind the coin, lost market confidence can trigger a fast price collapse that the algorithm cannot halt.
What an algorithmic stablecoin is, and what backs it
Stripe's guide describes these coins as digital currencies built to hold a fixed value, usually 1 U.S. dollar per unit. They aim to do it without large fiat or crypto reserves. Chainlink says they are typically non-collateralized or under-collateralized. Fiat-backed coins hold cash or cash-equivalent reserves offchain. Circle's USD Coin (USDC) learning page is blunter: algorithmic stablecoins "typically ditch the concept of reserve backing and let code do the balancing act." Crypto for Innovation says they are not backed by real assets and rely on algorithms to maintain a stable price.
How the peg is kept: code, swaps and price data
BitGo calls smart contracts the main stability mechanism. When a token's market price drifts from its peg, the protocol burns or mints tokens until balance returns. No human steps in. Allium describes the swap that drives two-token designs. Above $1, anyone can burn absorber tokens worth $1 and mint one new stablecoin. Below $1, the swap runs the other way. A separate explainer covers how crypto arbitrage works and whether it still pays.
Chainlink says the peg mechanisms rely on price data from oracles. If that data is "manipulated or delayed," the protocol "could mint or burn the wrong amount of tokens."
The three design families
Chainlink describes a rebasing coin as one that adjusts the token balance in every holder's wallet. The token count changes, and the goal is for each token's value to return to $1. Crypto for Innovation gives an illustrative case. If a token's value doubles, the rebase halves total supply, wallets included. A holder's 10 tokens become five and stay worth $10.
BitGo describes seigniorage models, also called dual-token models, as pairing the stablecoin's supply with a secondary token. Crypto for Innovation explains the pressure these coins face below $1. At that price, supply outruns demand, so the protocol has to cut the number of coins in circulation. Chainlink describes a third family, fractional-algorithmic coins. These hybrids are backed partly by collateral and partly by an algorithmic mechanism. Each family adjusts supply in a different way.
Three algorithmic stablecoin designs side by side
How does each design family change supply, and what do the sources say about it under stress?
| Design family | How supply changes | Under stress, per the sources | Example from the sources | Source |
|---|---|---|---|---|
| Rebasing | Every holder's wallet balance is adjusted so each token's value returns toward $1. | Without hard reserves, lost confidence can bring a collapse the algorithm cannot stop (Chainlink, coins without hard reserves). | Illustrative: after a doubling in value, 10 tokens become five, still worth $10. | Source: What Are Algorithmic Stablecoins? | Chainlink (chain.link), accessed Oct 14, 2026 · What is an Algorithmic Stablecoin? (cryptoforinnovation.org), accessed Oct 14, 2026 |
| Dual-token (seigniorage) | Paired with a secondary token. Below $1, supply must shrink, often by burning tokens or issuing bonds. | Sustained selling can make the peg defenses accelerate a collapse (BitGo). | Below $1, one stablecoin is burned for $1 worth of the absorber token, which dilutes it (Allium). | Source: What Are Algorithmic Stablecoins? | Chainlink (chain.link), accessed Oct 14, 2026 · Algorithmic Stablecoins: Why Most Broke Their Peg (allium.so), accessed Oct 14, 2026 · How Algorithmic Stablecoin Protocols Maintain Stability (bitgo.com), accessed Oct 14, 2026 · What is an Algorithmic Stablecoin? (cryptoforinnovation.org), accessed Oct 14, 2026 |
| Fractional hybrid | Backed partly by collateral and partly by an algorithmic mechanism. | No separate stress account in these sources. | None given. | Source: What Are Algorithmic Stablecoins? | Chainlink (chain.link), accessed Oct 14, 2026 |
Designs are shown as Chainlink, BitGo, Allium and Crypto for Innovation describe them, and the rebase example is illustrative.
What is confirmed and what is not
Three outlets describe the same supply loop. Chainlink, BitGo and Allium each say tokens are minted or burned to move the price back toward the peg. Stripe, Crypto for Innovation and the USDC page each describe coins with little or no reserve backing. Some points rest on one source. The 0.04% share of supply comes from a single data provider and has no second check. The rebase example is an illustration, not market data.
Analysis: what to ask before holding one
The explainers point to two questions for any coin sold as stable. First, what backs the $1? Second, what happens to any paired token when the coin trades below $1? If defending the peg means printing that token, each defense dilutes it. Scale is the last check. Allium's data put purely algorithmic designs at 0.04% of adjusted onchain stablecoin supply on Sept. 23, 2026. That was $0.13B of $313.74B. The dominant coins by supply, USDT (Tether) and USDC, are reserve-backed.
Limitations: every source is a vendor or industry explainer, including oracle provider Chainlink and Circle's USDC page. Pages with no date in their text are cited as read on Oct. 14, 2026.
Where to go next
For a deeper read, Allium's explainer describes the two-token loop and gives one supply figure. Chainlink's explainer describes each design and its risks. A separate explainer covers what store of value means for bitcoin. Next, check what backs the $1 of any stablecoin you hold. Then check what happens to any second token when the coin trades below $1.
Sources: What Are Algorithmic Stablecoins? | Chainlink (chain.link), accessed Oct 14, 2026 · Fiat vs Algorithmic Stablecoins: What You Need to Know (usdc.com), accessed Oct 14, 2026 · How Algorithmic Stablecoin Protocols Maintain Stability (bitgo.com), accessed Oct 14, 2026 · Algorithmic Stablecoins: Why Most Broke Their Peg (allium.so), accessed Oct 14, 2026 · Algorithmische Stablecoins: Was Unternehmen wissen müssen | Stripe (stripe.com), accessed Oct 14, 2026 · What is an Algorithmic Stablecoin? (cryptoforinnovation.org), accessed Oct 14, 2026
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