Bitcoin miners had plenty to celebrate in May 2023. A wave of BRC-20 token inscriptions and Ordinals activity drove transaction fees to five-year highs, generating approximately $63.2 million in fee revenue for miners during the month alone — surpassing the combined fee income from the entire first four months of the year.
TL;DR
- Bitcoin miners collected 2,750 BTC ($63.2 million) in transaction fees during May 2023
- Fee revenue in May exceeded the combined total of January through April (2,233 BTC / $69.3 million)
- Transaction fees surpassed the 6.25 BTC block subsidy on May 7 for the first time since December 2017
- Hashprice hit $129 per petahash per day, a 72% jump from the prior week
- BitMart and UniSat announced a strategic partnership to advance BRC-20 token infrastructure
The BRC-20 Fee Explosion
The catalyst behind the fee surge was BRC-20, an experimental token standard that leverages Bitcoin’s Ordinals protocol to create and transfer fungible tokens directly on the Bitcoin blockchain. What began as a niche experiment in March 2023 exploded into a speculative mania by early May, with thousands of users competing to inscribe tokens onto the network.
The bidding wars for block space were so intense that on May 7, at block height 788,695, transaction fees exceeded the 6.25 BTC block subsidy for the first time in this halving epoch. Some blocks contained over 6.4 BTC in fees alone, pushing total block rewards above 12.5 BTC — a figure not seen since the previous halving era’s base subsidy. The average fee-to-block-subsidy ratio during the first full week of BRC-20 mania reached 33.09%, compared to just 6.37% the week prior and a paltry 1.9% in early November 2022.
For context, the highest fee-to-subsidy ratio ever recorded was 77% on December 22, 2017, during Bitcoin’s historic bull run. The May 2023 spike represented the second-highest reading in Bitcoin’s history, underscoring just how transformative the BRC-20 phenomenon was for network economics.
A Lifeline for Struggling Miners
The timing of the fee surge could not have been better for Bitcoin miners. Throughout 2022, mining profitability had deteriorated sharply as Bitcoin’s price declined from its November 2021 all-time high of $69,000 while network hashrate continued climbing. Daily mining revenue in USD terms bottomed below $10 million on Christmas Eve 2022.
The BRC-20 fee bonanza abruptly reversed that trajectory. Hashprice — the revenue miners earn per unit of computational power — spiked to $129 per petahash per day during the peak of the inscription frenzy, representing a 72% increase from the prior week. Daily Bitcoin-denominated revenue climbed back to levels last seen in May and June 2022, before the worst of the bear market took hold.
The average transaction count per block also hit an all-time high of 4,373 on May 7, as users flooded the network with inscription transactions. Year-to-date, the average daily transaction fee in BTC was 38.63 ($1.03 million), compared to 16.50 ($329,795) during the second half of 2022 — a dramatic shift that demonstrated how new use cases were fundamentally altering Bitcoin’s revenue model.
BitMart and UniSat Partner to Build BRC-20 Infrastructure
As BRC-20 tokens captured mainstream attention, the infrastructure needed to support them was racing to catch up. On May 29, 2023, cryptocurrency exchange BitMart and UniSat — the leading open-source Bitcoin wallet for Ordinals and BRC-20 — announced a strategic partnership aimed at strengthening the resilience, security, and interoperability of the BRC-20 ecosystem.
The collaboration represented a significant milestone for Bitcoin’s emerging DeFi capabilities. UniSat had established itself as the primary gateway for users interacting with BRC-20 tokens and Ordinals inscriptions, while BitMart brought exchange infrastructure and liquidity to the table. Together, the partnership signaled growing institutional recognition that Bitcoin’s utility was expanding beyond its traditional role as a store of value.
The partnership also addressed a critical gap in the BRC-20 ecosystem: the lack of robust trading and custody infrastructure. While anyone could inscribe tokens directly on-chain, the user experience for trading and managing BRC-20 holdings remained fragmented. By combining UniSat’s wallet technology with BitMart’s exchange capabilities, the two companies aimed to create a more seamless pipeline from inscription to trading.
Implications for Bitcoin’s Long-Term Security Budget
The fee spike reignited a long-running debate within the Bitcoin community about the network’s long-term security model. With block subsidies halving approximately every four years — the next halving was expected in April 2024 — miners would increasingly depend on transaction fees to sustain their operations. The BRC-20 episode demonstrated that fee markets could indeed generate substantial revenue when on-chain activity is sufficiently high.
Critics argued that speculative BRC-20 trading was not a sustainable source of fee revenue, and that the congestion it caused harmed ordinary Bitcoin users. Average transaction fees briefly exceeded $7 in early May, with some reports of fees peaking above $16. Supporters countered that any activity generating fee revenue was ultimately beneficial for network security, and that the market would naturally equilibrate as users prioritized transactions.
Why This Matters
May 2023 was a watershed moment for Bitcoin’s economic model. For the first time in years, transaction fees became a material contributor to miner revenue — not through a gradual evolutionary process, but through an explosive speculative wave that caught much of the industry off guard. The BitMart-UniSat partnership showed that serious infrastructure players were already positioning themselves for a Bitcoin DeFi ecosystem. Whether BRC-20 tokens represent a lasting paradigm shift or a transient speculative episode, the fee data from May 2023 provided a compelling proof-of-concept for Bitcoin’s fee-driven security future.
Disclaimer: This article is for informational purposes only and does not constitute financial advice. Always conduct your own research before making investment decisions. Past performance is not indicative of future results.
fees surpassed the 6.25 btc block subsidy on may 7th. let that sink in. ordinals literally made mining more profitable than the halving reward itself.
Hashprice hitting $129 per petahash per day, a 72% jump in one week. No wonder public miners were scrambling to expand capacity.
2,750 BTC in fees in one month vs 2,233 in the entire previous four months combined. the brc-20 mania was absolutely insane
the fee-to-subsidy ratio hitting 33% in the first full week of brc-20 mania vs 1.9% just months before tells you how fast things shifted. miners had zero warning this was coming.
BitMart and UniSat partnering on BRC-20 infrastructure was the quiet important news here. Without proper tooling, inscriptions are just speculation.