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Cross-Chain Fragmentation Entropy

Shannon entropy measures how evenly stablecoin supply is distributed across blockchains: H = −Σ pi · log2(pi), where pi is chain i's share of total stablecoin supply. Higher entropy means supply is spread more evenly across many chains — a more fragmented settlement layer. Lower entropy means supply is concentrated on fewer chains. As of Apr 2026, across 367 daily snapshots from Apr 2025: 2.16 bits · Highly Concentrated. Dominant chain: Ethereum 53.1%.

Shannon Entropy (H)
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bits
Max Possible Entropy
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log₂(N chains)
Top Chain Share
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Chains Above 1%
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of total supply

Shannon Entropy Over Time

Daily cross-chain fragmentation entropy in bits. Rising entropy = stablecoin supply spreading to more chains. Falling entropy = consolidation onto fewer chains. Dashed line marks 50% of maximum possible entropy.

Top 5 Chains — Supply Share

Daily share (%) of total stablecoin supply for the top 5 chains by current supply. Shows which chains are gaining or losing share over time.

Top 10 Chains by Stablecoin Supply (Latest)

Ranked by total stablecoin supply (all issuers combined). Data: DefiLlama. Updated daily.

# Chain Supply (USD) Share Share Bar
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Entropy Level Guide

Highly Concentrated — H < 35% of max
Supply is overwhelmingly on 1–2 chains. Single-chain risk is high. Any disruption to the dominant chain affects the entire market.

Concentrated — H 35–50% of max
2–3 chains hold most supply. Some multi-chain presence but settlement is still dominated by a few networks.

Moderate — H 50–65% of max
Supply spread across 4–7 meaningful chains. Genuine multi-chain ecosystem with no single point of failure.

Distributed — H > 65% of max
Supply fragmented across many chains. High resilience to single-chain disruption. Possible UX/liquidity fragmentation tradeoff.

Methodology

Shannon entropy is computed daily as H = −Σ pi·log2(pi), where pi = chain_i_supply / total_supply across all tracked chains. Units are bits. Maximum possible entropy is log2(N) where N is the number of chains with any stablecoin supply. A value of 0 bits means 100% of supply is on one chain. A value equal to max means perfectly equal distribution.

Data source: DefiLlama /stablecoinchains endpoint aggregates reported stablecoin supply for each blockchain network. Collected daily at 15:18 UTC. Historical data from January 2025 was backfilled using DefiLlama's per-stablecoin historical API, aggregating across 171 stablecoins. Each chain snapshot covers 150–160 chains depending on the date.

Top-5 chain series uses the current top-5 chains applied backwards through history, so the lines represent the same chains across time. Chains that didn't exist yet show 0% share.

Frequently Asked Questions
What is cross-chain fragmentation entropy for stablecoins?
Cross-chain fragmentation entropy measures how evenly stablecoin supply is distributed across blockchains using the Shannon entropy formula H = −Σ p_i·log₂(p_i). Higher entropy means supply is spread more evenly across many chains. Lower entropy means supply is concentrated on fewer chains. It is a single number that summarises the decentralisation of stablecoin settlement — useful for policymakers, issuers, and DeFi protocols assessing systemic concentration risk.
Why does Ethereum dominate stablecoin supply?
Ethereum hosts the deepest DeFi liquidity, the largest institutional custody infrastructure, and the most mature smart contract ecosystem. USDT and USDC were both originally issued on Ethereum. Despite significant growth on Tron (for remittances and OTC), Solana (DeFi/payments), and BSC, Ethereum retains over 50% of total stablecoin supply, anchoring entropy at a relatively low level.
What does rising entropy mean for the stablecoin market?
Rising entropy means stablecoin supply is spreading across more chains — settlement is becoming more decentralised. This reflects growth of L2 networks, new chain ecosystems, or issuers deploying natively on more chains. Falling entropy means consolidation — supply concentrating on fewer chains, which may indicate market-structure efficiency or reduced multi-chain activity.
What is the maximum possible entropy?
Maximum entropy is log₂(N) bits where N is the number of chains with any stablecoin supply. With ~157 chains tracked, the theoretical maximum is ~7.3 bits (perfectly equal distribution across all chains). Current entropy near 2 bits represents roughly 27% of maximum entropy — indicating significant concentration.
What data source is used for chain-level supply?
Chain-level stablecoin supply data comes from DefiLlama's free /stablecoinchains API endpoint, which aggregates reported supply across all tracked chains. Data is collected daily and stored as snapshots. Historical data from 2025 was backfilled using DefiLlama's per-stablecoin historical API, aggregating across 171 stablecoins above a $1M supply threshold.