The average fee per transaction on Ethereum reached $6.04 Wednesday night, according to Blockchair, the highest fees since 2015.

• Median transaction fees, which have stayed just below historic highs of $3.03, currently sit at $3.00.
• Fees hovered below $1 until mid-July when transaction fees started to soar.
• Fee increases coincide with surging activity on popular decentralized financial protocols like Uniswap.
• At least three similar decentralized finance applications are included on a list of protocols with the highest levels of network utilization, curated by Etherscan.
• While Ethereum developers have toyed with numerous technical options to reduce fees by scaling the network's transaction capacity, a possible fix remains months away.