Between June 23 and September 20, the metaprotocol Alkanes accounted for 61.1% of all transactions recorded on the Bitcoin network, according to data published by SUBFROST, the company behind much of the protocol's infrastructure. Over that 90-day window, SUBFROST counted 59.9 million Alkanes transactions, a volume that has quietly reshaped how blockspace on Bitcoin is used without carrying a comparable economic footprint.
Alkanes is a metaprotocol that enables programmable logic triggered through standard Bitcoin transactions, layered on top of the base chain rather than altering it. Much of the activity attributed to Alkanes traces back to DIESEL, a token whose minting process is anchored directly into the protocol. DIESEL launched in January 2025, and in its early months daily mints numbered only a few hundred. A later change to the mechanism allowed multiple winners per block, and daily mints subsequently rose into the hundreds of thousands, reaching as many as half a million on the most active days.
Part of the appeal lies in cost. A DIESEL mint transaction carries a fee of 130 satoshis, which SUBFROST's figures put at seven to eight times cheaper than other Bitcoin transactions. That price difference helps explain the sheer volume, even as the economic weight of this activity stays modest by comparison. Alkanes transactions make up 40.3% of total Bitcoin block weight but only 13.4% of paid transaction fees, a gap that reflects how small and cheap each individual entry tends to be. SUBFROST notes that Alkanes data entries average just 21 bytes.
Security incident and wider footprint
In early July, an attacker exploited a bug in how Alkanes evaluates state, generating 1.47 million units of phantom DIESEL and exchanging them for 82.3 frBTC. Bitcoin's base layer was not affected, as the exploit was confined to a separate infrastructure layer sitting above the main chain.
Alkanes' imprint extends into how Bitcoin blocks carry data more broadly. The protocol accounts for 79% of all OP_RETURN data written to Bitcoin since DIESEL's launch, and between April and June that share rose to roughly nine in every ten OP_RETURN entries on the network. Separately, 99% of UNCOMMON•GOODS token mints are reported to contain DIESEL data, underscoring how tightly the token has become woven into adjacent activity.
DIESEL alone makes up nearly 16% of all Bitcoin transaction fees, with that share exceeding 25% on certain days in late June. Even so, the sums involved remain small against Bitcoin's overall mining economics. Miners currently earn 3.125 BTC per block found, and with roughly 144 blocks mined per day, that produces about 450 new BTC daily from block rewards alone. Daily transaction fee revenue across the entire network sits at roughly 220,000 US dollars, meaning combined fees represent less than 0.1% of total mining rewards.
For a European audience watching Bitcoin's role evolve beyond simple value transfer, the figures illustrate a network where transaction count and economic significance have become increasingly disconnected, with a single metaprotocol now dominating raw activity while contributing comparatively little to the fees that sustain miners.
