Chapter 2 · Six-Layer Stablecoin Stack
Thesis: most people start by asking how the peg works. That is the wrong floor. The real money and the real failure modes sit in trust, distribution, reserves, and compliance.
The stablecoin business can be read as a six-layer structure:
Six-Layer Stablecoin Stack = collateral -> peg -> trust -> distribution -> reserves/yield -> compliance.
- Layer 1: Collateral. What backs the liability?
- Layer 2: Peg. Why should one token trade at one dollar?
- Layer 3: Trust. Can I redeem when panic arrives?
- Layer 4: Distribution. Who makes the coin get used?
- Layer 5: Reserves and yield. Who earns the spread?
- Layer 6: Compliance. Where is the legal boundary?
The lower three layers determine whether a stablecoin can survive. The upper three determine whether it can win.
Why the Peg Is Only the Ticket
The peg is a veto item, not a scoring item. A broken mechanism can kill you overnight, but a more elegant peg will not create users, float, or profit. UST / LUNA died at Layer 2. USDC x SVB was different: the mechanism was sound, but $3.3B of reserves were caught in one bank, creating a Layer 1 and Layer 3 trust shock that pushed the market price toward $0.87.
GENIUS Act raised the U.S. compliant payment-stablecoin path around regulated issuers, 1:1 eligible reserves, monthly disclosure, and a ban on issuer-paid interest. It did not simply say “algorithmic stablecoins are banned.” It effectively excludes or walls off pure algorithmic / endogenous-collateral designs from the compliant payment-stablecoin framework by definition and reserve design.
The Upper Three Layers
Distribution is where the moat appears. Circle’s Q1 2026 numbers make the point:
- Reserve income: $652.5M.
- Total revenue: $694.1M.
- Distribution and transaction costs: $405.4M.
- Coinbase-related distribution alone: $330.6M.
- GAAP net income: $55.2M.
Circle paid one channel six times its own quarterly net income. The issuer prints; the channel taxes.
Reserves are where profit is made. Tether’s Q1 2026 $1.04B net profit and roughly $141B Treasury exposure show what the float machine looks like at scale.
Compliance is the boundary. GENIUS Act, signed as Public Law 119-27 on 2025-07-18, reshaped who may issue, what reserves may hold, and whether issuers may pay interest. Under §20, the main requirements become effective around 2027-01-18 or 120 days after final implementing rules, whichever comes first; as of mid-2026, rulemaking remained in process.
Six Questions for Any Stablecoin
- Collateral: what is actually in the reserve?
- Peg: can the mechanism self-destruct in a run?
- Trust: who gets paid in a crisis, and how fast?
- Distribution: who owns the users and extracts Channel Tax?
- Reserves: who keeps the spread after distribution costs?
- Compliance: which legal line is it standing on?
Ask only Layer 2 and you know whether it may die. Ask all six and you know whether it can win.