Crypto exchange Bitfinex completed a highly consequential transaction on Sept. 27 when sending $100,000 of the stablecoin Tether (USDT) to the layer-2 subsidiary platform DeversiFi. For reasons unknown, the exchange paid 7,676 ETH, equivalent to $23.7 million, marking quite possibly the largest gas fee ever recorded on the Ethereum blockchain.  According to blockchain data from EtherScan, the deposit transaction was initiated at 11:10 UTC this morning from Bitfinex’s second-largest wallet, via a second address, to the wallet of DeversiFi. The transaction carried an “erroneously high gas fee”, even though DeversiFi promotes a service to “avoid gas costs and frustration, saving you time and money with every trade or swap.” To put the enormity of this fee into context, consider the fact that the average transaction fee on the Ethereum blockchain currently stands at 0.013 ETH, or $39.96. In addition to this, two weeks ago, $2 billion of BTC was transferred between unknown wallets for an infinitesimal fee of $0.78.