Key Insights:
- Heavy L2 activity can be done without settlement costs because cheap Ethereum blobs are available.
- L2 revenue does not have to be shared among operators and related infrastructure.
- Ethereum still provides data availability and settlement features that build the base, for the platforms infrastructure.
As of September 3, Robinhood Chain took in approximately $4.5 million in transaction fees, whereas Ethereum took in approximately $398 in data posting and proof fees. The gap shows how Layer 2 networks can generate substantial revenue while using Ethereum settlement infrastructure at relatively low cost.
Bitquery recorded 597 million transactions from the network’s first block on April 30 through September 3. It also calculated about $23 million in cumulative fees during that period. However, fee growth accelerated sharply in late August as network demand pushed gas prices higher.
Fee growth accelerated in late August
The network ran with a 0.02 gwei base fee before August 24. This changed when more people wanted to use the network and the amount of gas being used grew. Daily fees went up from $54,701 on August 22 to $4.5 million on September 3. At that time daily gas usage went up from about 1.09 trillion units to 3.39 trillion units.
Bitquery said that 70% of the fees happened after August 24. Gas prices reached 0.511 gwei on September 3 which was 25 times the amount before. The normal swap rate that cost a cent on August 22 went up to about 48 cents on September 3. So as more people used the network the cost for using it also went up.
Bitquery also found that eight contract addresses caused 79% of the rise in gas usage. One swap router handled about 1.7 million transactions. Paid around $1.1 million. Another settlement contract managed transactions from 31 wallets. Those wallets made 695,000 transactions and paid about $692,000.
The activity also used ERC-4337 infrastructure and other automatic trading systems. However just looking at the blockchain data cannot show who was, in control of the addresses.
Ethereum settlement remained relatively cheap
Despite the rise in user fees the settlement cost on Ethereum stayed low. Bitquery estimated $396 for data posting and $2 for proof-related costs on September 3. This led to a fee-to-settlement-cost ratio of 11,400 to one.
The estimate came from analyzing 24 batch receipts throughout the day. The reason for this difference lies in Ethereums blockchain system. EIP-4844 introduced blobs to the network to allow temporary data storage especially for rollups.
Robinhood is using Ethereum blobs to handle data availability with ETH serving as its native gas asset. This means the network can manage on-chain activity without relying on Ethereum for settlement tasks.
The $398 figure is not the full economic return Ethereum has received. It only reflects the settlement costs paid for recorded activity. Similarly, the $4.5 million in fees does not represent operator profit. Operators have expenses beyond transaction records—like infrastructure, staff, development, compliance and other operational costs.
Digital Asset independently estimated around $49,000 in on-chain costs paid to Ethereum since late April. That averages out to about $370, per day over the period they studied.
Revenue stays across different layers
The fee gap has sparked debate about how Ethereum takes value from the growing Layer 2 ecosystem. More activity on a Layer 2 can raise usage without pushing the growth in Ethereum’s direct transaction fees.
This pattern comes from how the system’s built, not from a fault in the network. Ethereum created blob storage to lower rollup costs and to push more transactions off the mainnet.
The economic question goes beyond counting transactions.
- Layer 2 operators take fees from users who use their networks.
- Ethereum takes fees for settlement and for data availability.
- Infrastructure providers can earn money from Layer 2 activity.
Robinhood’s deal with Arbitrum adds another layer to that mix. Under its Expansion Program license the network sends 10% of protocol revenue to the Arbitrum ecosystem.
Arbitrum sends 8% to the ArbitrumDAO treasury. 2% To the Arbitrum Developer Guild. The agreement applies to protocol revenue so the gross fee figure from September 3 does not directly show the payment.
Arbitrum’s financial update for September 2 reported $360,000, in Expansion Program licensing fees during July. Those payments made up 35% of ArbitrumDAO income that month.
Network control adds another dimension
The economic structure also differs from Ethereum’s open settlement model. L2Beat currently identifies only two whitelisted actors that can challenge state updates on Robinhood Chain.
The network also operates with a centralized sequencer that controls transaction ordering. L2Beat says that position can create opportunities for maximum extractable value. An authorized transaction filter can also prevent selected transactions from executing. Meanwhile, certain upgrades can occur without providing users with an exit window.
L2Beat presents these points through its own risk framework rather than as a direct security rating. The platform also confirms that Robinhood publishes required data to Ethereum for state reconstruction. By September, network activity remained substantial despite the changing fee environment. Later reporting showed daily gas revenue falling to about $944,000 by September 10.
Transaction counts remained close to early September levels. That decline showed that September 3 represented an unusually high fee day rather than a stable daily revenue rate. The episode also revealed how users responded to higher costs. Bitquery found that failed transactions fell from roughly 20% on August 21 to about 10% on September 3.
Automated systems could previously submit speculative transactions when fees remained minimal. Higher costs appeared to encourage more selective transaction execution.
Conclusion
The example of Robinhood Chain perfectly demonstrates how layer 2 networks (L2) can earn high fees from users while only bearing extremely low Ethereum settlement costs. The core data from September 3 further highlights that the economic gap between the business volume of layer 2 rollup networks and the direct revenue earned by Ethereum is constantly widening.
The core issue facing the entire industry now is how Ethereum can convert the expanding usage of layer 2 networks into its own long-term, stable economic revenue. The case of Robinhood Chain has clearly shown that relying solely on growth in the number of transactions cannot solve this core problem.
