Stablecoin FAQ — Digital Dollar Dominance

DDD stands for Digital Dollar Dominance. It measures the total market cap of pegged assets tracked by DeFi Llama as a share of US M2 money supply. The result is predominantly driven by USD stablecoins, which make up roughly 98% of the numerator.

Pegged-asset market cap (from DeFi Llama) divided by US M2 (from the Federal Reserve via FRED). DeFi Llama tracks all pegged assets across chains — mostly USD stablecoins, but also a small amount of non-USD-pegged tokens.

M2 is a widely used public measure of broad US money. It includes cash, checking deposits, savings deposits, and short-term time deposits. No denominator is perfect, but M2 is practical, widely recognised, and provides a useful reference point for the question DDD is asking.

DDD measures monetary presence, not payment activity. Market cap tells you how much value exists in pegged-asset form at any given moment. Transaction volume tells you how actively those assets are moving. Both are useful. DDD tracks the first.

No. The numerator uses the total market cap of all pegged assets tracked by DeFi Llama, which includes non-USD-pegged tokens (EUR, BRL, and others). USD-pegged stablecoins account for approximately 98% of the total, so the impact is small, but the metric is not strictly limited to USD stablecoins.

The animated chart on the homepage is an illustrative visual showing the outstanding supply of major stablecoin issuers over time. It is designed to help readers understand how stablecoin adoption has grown and how each issuer's share contributes to the wider digital dollar ecosystem. It is not a real-time feed of minting activity — the data is refreshed periodically and the animation is a representation to make trends easier to follow. See methodology for source data and calculation details.

Minting is the creation of new stablecoin tokens — typically when a user or institution deposits fiat with an issuer and receives stablecoins in return. Burning is the reverse: tokens are redeemed and removed from circulation. Net mints (mints minus burns) directly increase the pegged-asset market cap that forms the DDD numerator. A sustained period of net minting pushes DDD higher; net burning pulls it lower. Large mint or burn events from major issuers like Tether or Circle can move DDD noticeably in a single day.

US M2 is the denominator of the DDD ratio. When the Federal Reserve's monetary policy causes M2 to expand — for example through quantitative easing or increased bank lending — DDD can fall even if stablecoin supply stays flat, because the denominator grew. Conversely, during periods of monetary tightening where M2 contracts, DDD rises relative to stablecoin supply. M2 data is published monthly by the Fed with roughly a two-week lag, so changes in M2 affect DDD on a slower cycle than stablecoin market cap movements.

Pegged-asset market cap updates in near real-time via DeFi Llama. US M2 updates monthly, with approximately a two-week lag. DDD refreshes using the latest available value from each source on every page load.

No. DDD is an independent public benchmark. It is not affiliated with any stablecoin issuer, exchange, protocol, or company, and does not endorse any asset or product.

DDD does not directly measure transaction volume, active users, country-level adoption, or payment usage. It measures pegged-asset market cap relative to US M2.

No. DDD is for informational purposes only. It does not constitute financial advice, an endorsement of any asset, or a recommendation to buy, sell, or hold any investment.

Pegged assets — predominantly USD stablecoins — are becoming a meaningful part of how dollars are held and moved online. DDD gives that shift a simple, trackable public benchmark. Whether the number rises, falls, or plateaus, having a clear measure makes the trend easier to understand and discuss.

The total stablecoin market cap is over $230 billion as of early 2026. Stablecoins now represent approximately 1.4% of the US M2 money supply — equivalent to roughly 1 in 72 US dollars existing as a stablecoin. Track the latest figure on the DDD dashboard.

Approximately 1.4% of US dollars (as measured by M2 money supply) currently exist as stablecoins on blockchain networks. This ratio — called Digital Dollar Dominance — has grown from near zero in 2017 to over 1% by 2025. The DDD tracker monitors this percentage in real time using data from DeFi Llama and the Federal Reserve.

Stablecoin adoption can be measured in several ways: market cap (total value in circulation), transaction volume, number of active wallets, or geographic reach. DDD focuses on market cap relative to the traditional money supply, which answers a specific question — what share of the dollar system has moved on-chain? See our methodology for how this is calculated and what data sources are used.

Tether (USDT) holds the largest stablecoin market share at approximately 58% of total stablecoin supply, followed by Circle's USDC at approximately 24%. Together these two issuers account for over 80% of all stablecoins in circulation. The issuer landscape section on the DDD dashboard shows a live breakdown of market share by issuer.

The stablecoin percentage of M2 is the core metric DDD tracks. It divides total stablecoin market cap by US M2 money supply. Currently around 1.4%, this ratio shows how much of the conventional dollar system has been replicated on-chain. M2 includes cash, checking deposits, savings, and short-term deposits — published monthly by the Federal Reserve. Learn more in our methodology.

Stablecoin growth has been rapid. Total stablecoin supply grew from under $5 billion in 2019 to over $230 billion by 2026. The DDD ratio went from near zero to over 1.4% in that period. Growth is driven by demand for digital dollar settlement, DeFi usage, cross-border payments, and increasing adoption in emerging markets. The historical chart on the DDD dashboard visualises this growth over time.