USD Coin is taking a run at the title of the top stablecoin in crypto after its daily ‘real volume’ on the Ethereum network doubled that of Tether’s USDT on Tuesday.

According to crypto market data tool Messari, Circle’s USDC posted $1.1 billion in daily real volume on the Ethereum network on June 21, which was double USDT’s real volume of $579 million.

Messari’s real volume metric is calculated by compiling data only from exchanges that it believes have “significant and legitimate crypto trading volumes" and thus differs to the more-commonly seen "total volume" metric.

Exchanges included in Messari's Real Volume metric include Binance, Bitfinex, Bitflyer, Bitstamp, Bittrex, Coinbase Pro, Gemini, itBit, Kraken, Poloniex, and those tracked on OnChainFX.

Tether’s circulating supply has continued to fall since its all-time high on May 11, dropping nearly 20% from 83.1 billion coins in circulation to an eight-month low of 67.9 billion as of the time of writing.

USDC on the other hand has seen its supply increase 13% since May 11 to 55.9 billion. If the trends continue, it could spell the end of Tether’s dominance in the stablecoin space.

The collapse of layer-1 blockchain Terra and possible contagion from the fall of crypto lending platform Celsius have caused doubt among investors, made worse by a market crash in recent weeks. Redemptions in Tether have increased significantly in the aftermath, leading to a drop in supply.

Tether has been attempting to shore up confidence in its stablecoin – including stating on June 13 that the ongoing calamities in the crypto market involving Terra and Celsius will not have any impact on its reserves. Despite this, investors appear to be migrating to USDC.

Messari’s real volume metric does