A plain-language guide to Digital Dollar Dominance, the USD stablecoin-to-M2 benchmark for on-chain dollar penetration.
Digital Dollar Dominance measures circulating USD stablecoin supply as a share of U.S. M2 broad money. The benchmark answers one question: how large is on-chain USD stablecoin supply relative to the wider dollar money supply? The Tape is separate: it tracks snapshot-to-snapshot supply movement beneath the benchmark.
A cryptocurrency designed to maintain a stable value relative to a reference asset, typically the US dollar. Most stablecoins are backed 1:1 by reserves of fiat currency, treasury bills, or other assets held by the issuer. Major stablecoins include USDT (Tether), USDC (Circle), and USDS (Sky). Stablecoins enable dollar-denominated transactions on blockchain networks without the price volatility of assets like Bitcoin or Ethereum.
An informal term for U.S. dollar value represented on blockchain networks, primarily through privately issued USD stablecoins. It does not mean a central bank digital currency (CBDC). The term reflects that stablecoins are pegged to the dollar, redeemable for dollars, and used as dollar substitutes in global commerce and finance.
A benchmark that measures circulating USD stablecoin supply as a percentage of U.S. M2 broad money. It answers the question: how large is on-chain USD stablecoin supply relative to the wider dollar money supply? Track the live reading on the DDD dashboard. See methodology for how it is calculated.
The total value of all units of a stablecoin currently in circulation. For a stablecoin pegged at $1, market cap is effectively equal to total supply. USD stablecoin supply is the numerator of the DDD ratio. In aggregate, stablecoin market cap is now measured in the hundreds of billions of dollars.
A measure of broad money in the U.S. economy. M2 includes cash, checking deposits, savings deposits, and short-term time deposits. Published monthly by the Federal Reserve via the FRED API, M2 is the denominator of the DDD ratio. Stablecoins are not counted as part of M2 in DDD; they are compared against it.
The target price a stablecoin aims to maintain, usually $1.00 for USD stablecoins. A stablecoin is said to "hold its peg" when it trades at or very near this target. A "depeg" occurs when the market price deviates significantly, which can happen due to reserve concerns, liquidity events, or market panic. Depegged stablecoins are still counted in DDD data if tracked by DeFi Llama.
The largest stablecoin by market cap, issued by Tether Limited. USDT remains the leading stablecoin by tracked supply. It is available on multiple blockchains including Ethereum, Tron, Solana, and others. USDT is backed by reserves including US Treasury bills, cash, and other assets.
The second-largest stablecoin, issued by Circle. USDC remains one of the dominant issuers in tracked supply. It is regulated, fully backed by cash and short-term US treasuries, and available on Ethereum, Solana, Base, and other networks. Circle publishes monthly reserve attestation reports.
The upgraded stablecoin from Sky (formerly MakerDAO). Unlike USDT and USDC, USDS is crypto-collateralised — generated by users depositing collateral into smart contracts rather than being issued by a centralised company. USDS replaced DAI as Sky's primary stablecoin in 2024.
Supply movement is the observed change in stablecoin supply between snapshots. The Tape uses conservative language such as expanded, contracted, net movement, and snapshot delta. Event-level mint/burn language should only be used when transaction-level evidence supports it.
Stablecoins exist on multiple blockchain networks. Ethereum and Tron host the largest share, with other major networks including BSC, Solana, Base, Arbitrum, and more. The distribution of stablecoins across chains reflects where demand for digital dollar settlement is strongest. See the chain breakdown on the DDD dashboard.
The growing use and acceptance of stablecoins across financial markets, payments, and commerce. Stablecoin adoption can be measured by market cap, transaction volume, number of active wallets, or geographic reach. DDD measures adoption through the lens of USD stablecoin supply relative to U.S. M2 broad money.
The increase in total stablecoin supply over time. Stablecoin supply has grown from a niche base in the late 2010s into a market measured in the hundreds of billions of dollars. Growth is driven by demand for digital dollar settlement, DeFi protocols, cross-border payments, and emerging market adoption. The historical chart in Metrics visualises this growth.
DDD is the public benchmark for on-chain dollar penetration: circulating USD stablecoin supply divided by U.S. M2 broad money.
DDD uses tracked USD stablecoin supply from public sources and U.S. M2 from FRED. The full formula, source boundary, and limitations live on the Methodology page.
The Tape measures observed stablecoin supply changes between DDD-owned snapshots. It reports expansion, contraction, and net movement. It does not label snapshot deltas as true mints or burns unless event-level data proves that.
DDD is a USD stablecoin-to-M2 benchmark. The site also shows non-dollar fiat rails on the Currencies board, but that is a separate currency-mix view.
No. DDD is data and research only. It is not financial advice or a recommendation to buy, sell, or hold any asset.
See How It's Calculated for the full methodology. View the live benchmark on the benchmark and the live fiat mix on Currencies.
Daily Tape
The latest official Daily Tape window, daily card, and citeable stablecoin supply movement updates.