Ethereum gas prices more than doubled from Tuesday to Wednesday and are on track to double again today, per data from blockchain explorer Etherscan. 

Much of the cause for the increase are transfers involving the addresses of centralized stablecoins, Tether and USDC. Tether stablecoin transactions have accumulated the most in fees over the last 24 hours, besting trades on decentralized exchanges Uniswap and 1inch; USDC stablecoin ranks fourth. 

That's notable because, for much of the last year, NFT marketplace OpenSea has consistently ranked as one of the top two Ethereum "gas guzzlers."

Gas, measured in "gwei," quantifies the computational power required to make a transaction on the Ethereum network. (The user making the transaction pays in ETH.) At its most basic, the higher the gas, the more expensive the transaction. And things get more expensive as the network is congested.

While the declining value of ETH—now under $2,000 for the first time since July 2021—typically brings transaction fees down in dollar terms, the amount of activity on the network is actually causing the price of gas in USD to travel upward. At one point on Thursday, the estimated cost of a Tether (USDT) transfer was more than $20. 

And a lot of USDT is being transferred at the moment.

Just shy of 22 billion in USDT was moved on Ethereum yesterday—the highest amount since May 2021. But it's not necessarily because people want Tether. According to CoinMarketCap, USDT's market capitalization has actually fallen 2% over the last 24 hours, meaning circulation has fallen.

 2022 Crypto Crash

Binance Warns It Will Delist Terra's LUNA If It Falls Below 0.005 USDT

Binance warned Thursday that it would delist the LUNA/Tether trading pair if LUNA’s price fell below 0.005 Tether, or about half a penny. Shortly after Binance sent its tweet, Terra shut down its entire network and left the circulating supply of 34 billion LUNA in limbo, and then turned it back on about two hours later. LUNA is the native token of the Terra ecosystem. In the past 24 hours, its price has plunged as low as $0.01302—down 99% for the second day in a row, according to CoinMarketCap....

USDT may be getting painted with the same broad brush as Terra's decentralized UST stablecoin (without the "D"). This week, UST lost its peg in a major way, dropping to as low as $0.29. The depegging caused the price of Terra's native token, LUNA, to collapse from a monthly high of $99 to $0.01.

Tether, too, briefly lost its dollar peg today before regaining its target price, as stablecoins face a major crisis. Some, including Tether CTO Paolo Ardoino, are suggesting that traders are selling USDT because they're mistaking it for UST. 

But unlike UST, which was backstopped through undercollateralized holdings of LUNA, UST, Bitcoin, and Avalanche, USDT keeps its reserves in cash, bonds, and other assets—though many think its treasury is too reliant on commercial debt that can become illiquid in a financial crisis.

Today, however, was a chance for the company to boast about its stablecoin's, well, stability. It published a blog post claiming it has processed 300 million redemptions of USDT and would be processing another 2 billion before the day is through.

USDC, meanwhile, which has publicized its move toward a reserve comprising only cash and short-term Treasuries, has benefited from the stablecoin panic. Its market cap is up 0.75% as traders exit open positions on Ethereum exchanges and trade into USDC.