# Arbitrum One Stats: Gas, Activity, Timeboost and Priority Fees

> Arbitrum One stats by day: transactions, active addresses, the L2 base fee in gwei, fees paid, Timeboost auction history and priority fees paid to the DAO.

Markdown copy of https://voltfincrypto.com/apps/arbitrum-one-stats

**Question:** How busy is Arbitrum One, what does gas cost there and what does the DAO earn from ordering transactions?

- Kind: Dashboard in Voltfin Vantage
- Topic: [Layer 2s](https://voltfincrypto.com/topics/layer-2)
- Chains: Arbitrum, Ethereum
- Status: Planned. The data is not published yet, so this page states no figure; each figure will open its receipt when it is.

Arbitrum One is the flagship Arbitrum chain: an optimistic rollup built on Nitro that settles to Ethereum and is governed by the Arbitrum DAO. This dashboard reads its blocks for daily transactions, active addresses and gas, from the L2 base fee that ArbOS sets to the L1 data cost each transaction carries for its share of the batch posted to Ethereum.

It also follows how Arbitrum One sells the order of transactions. The chain ran first come, first served until April 2025, when Timeboost added a sealed-bid auction for an express lane in each round. In September 2026 the DAO replaced Timeboost with priority gas auctions, in which the tip a transaction offers orders it within short rounds. Both are measured from their own on-chain traces and kept apart.

Every figure is read from Arbitrum One or Ethereum blocks and names the block it came from, so fees, auction prices and the DAO's revenue can be checked transaction by transaction.

## Blueprint

### Activity and gas

Transactions, active addresses and gas on Arbitrum One, with what a swap costs now.

- **Transactions, latest day** (count): Transactions in Arbitrum One blocks on the latest complete UTC day, leaving out the ArbOS internal transaction that opens each block.
- **Active addresses, latest day** (count): Distinct addresses that sent at least one transaction on Arbitrum One on the latest complete UTC day.
- **L2 base fee now** (gwei): The base fee per gas in the latest Arbitrum One block header, as ArbOS priced it.
- **Cost of a swap now** (USD): What a typical DEX swap costs at the latest block: its execution gas at the base fee plus the L1 data cost of its bytes, with the gas amounts named.
- **Transactions and active addresses by day** (count): Daily transactions and daily active addresses on Arbitrum One over the selected period.
- **Fees by day: execution and L1 data** (ETH): Fees users paid each day, split into the execution part and the L1 data part read from gasUsedForL1, beside what the batch poster paid Ethereum.

### Ordering revenue

What Arbitrum One earned from ordering transactions: Timeboost auctions, then priority fees.

- **Ordering revenue, 30 days** (ETH): Priority fees paid on Arbitrum One over the last 30 days; for periods before the switch, Timeboost auction proceeds instead.
- **Paid to the DAO treasury, 30 days** (ETH): Ordering revenue that reached the Arbitrum DAO treasury over the last 30 days, from the transfers into it.
- **Ordering revenue by day** (ETH): Daily Timeboost auction proceeds until the switch and daily priority fees after it, on one axis so the change of policy shows.
- **Timeboost rounds**: Every express lane round from April 2025 to the switch: winner, price paid, express lane transactions and each winner's share of the rounds.

Filters: Period (Last week, month, quarter or year).

## How it will be measured

- Transactions and active addresses are counted per UTC day from Arbitrum One blocks, leaving out the ArbOS internal transaction that opens each block; an address is active when it sends at least one transaction.
- Gas is read per block and per transaction: the L2 base fee from each header, then gas used, effective gas price and gasUsedForL1, the L1 data part of each fee, from receipts.
- Timeboost is read from the ExpressLaneAuction contract on Arbitrum One: deposits, each round's winner and the price paid under the second-price rule, with the receipts' timeboosted flag marking express lane transactions.
- Priority fee revenue after the switch is the tip part of each fee, effective gas price minus base fee times gas used, summed per day; the DAO's share is read from transfers into its treasury.
- Costs paid to Ethereum are the gas and blob fees of the batch poster's transactions to the Sequencer Inbox, read from Ethereum receipts.

## Data it needs

- `chain_activity_daily` (to build): Transactions, active sending addresses, new addresses, contracts created and gas used on each chain per day, counted from blocks and transactions.
- `gas_blocks` (to build): Base fee, priority fee percentiles, gas used and gas limit for each block on fee-market chains, for a near-live gas tracker.
- `l2_activity_daily` (to build): Per layer 2 per day: transactions, active addresses, fees users paid on the L2, and what the L2 paid Ethereum to settle and post data.
- `protocol_revenue_daily` (to build): Fees users paid to each protocol and the part kept by the protocol or its token holders, per protocol and day, including buybacks.
- `native_prices_daily` (to build): Reference prices of major assets read from on-chain oracle feeds (Chainlink latestRoundData) at each day's last block, with each round's update time.
- Source: Arbitrum One blocks and receipts: base fee, gas used, effective gas price and gasUsedForL1
- Source: ExpressLaneAuction contract events on Arbitrum One: deposits, resolved auctions, round winners and prices paid
- Source: The timeboosted flag in Arbitrum One receipts
- Source: Transfers into the Arbitrum DAO treasury from fee accounts and the auction contract
- Source: Batch poster transactions to the Sequencer Inbox on Ethereum, with gas and blob fees
- Source: Chainlink ETH/USD at day-end blocks

## Questions

### How much is gas on Arbitrum One?

Arbitrum One charges an L2 base fee that ArbOS sets from recent demand, never below a minimum, plus an L1 data cost for the bytes a transaction adds to its batch on Ethereum. Since the ArbOS Dia upgrade, the base fee responds to several gas targets over different windows, which smooths spikes. The dashboard shows the latest base fee and what a swap costs at it.

### What was Timeboost?

Timeboost was Arbitrum One's transaction ordering policy from April 2025. Before each round, a sealed-bid, second-price auction sold an express lane whose controller skipped a short delay applied to everyone else's transactions. Most of the proceeds went to the Arbitrum DAO treasury. The dashboard keeps its full auction history, round by round.

### What replaced Timeboost?

Priority gas auctions. Since September 2026 the sequencer orders transactions within short rounds by the priority fee they offer, as validators do on Ethereum, with a rule that stops low-tip transactions from waiting indefinitely. Tips are now ordering revenue, and the dashboard counts them by day beside the Timeboost history.

### Does Arbitrum burn gas fees?

No. Arbitrum One does not burn its base fee. Fees are paid to fee accounts set in ArbOS and routed to the DAO treasury and other recipients chosen by governance, so the dashboard treats them as revenue rather than as burn.

### How long does a withdrawal from Arbitrum One take?

A native withdrawal can be executed on Ethereum once the assertion that includes it is confirmed, after a challenge period of about a week, and the user then executes it from the outbox. The withdrawal times dashboard measures both steps for every covered rollup.

## Glossary

- **ArbOS**: The layer of Arbitrum's software that prices gas, handles messages from Ethereum and holds chain settings such as the minimum base fee and the fee recipients.
- **Express lane**: Under Timeboost, the right to have transactions sequenced without the short delay applied to everyone else, sold one round at a time.
- **Priority gas auction**: An ordering rule in which transactions offering a higher priority fee are sequenced first within each round.
- **BoLD**: Arbitrum's dispute protocol, under which anyone can challenge an incorrect state claim and disputes resolve within a bounded time.

## Related apps

- [Base Chain Stats: Transactions, Users and Fees](https://voltfincrypto.com/apps/base-chain-stats)
- [Ethereum L2 Fees Compared: Cost per Transaction](https://voltfincrypto.com/apps/ethereum-l2-fees)
- [L2 Profitability: Fees Earned vs Costs Paid to Ethereum](https://voltfincrypto.com/apps/l2-profitability)
- [Arbitrum Orbit Chains: Rollups and L3s Built on Arbitrum](https://voltfincrypto.com/apps/arbitrum-orbit-chains)
- [L2 Withdrawal Times to Ethereum by Rollup](https://voltfincrypto.com/apps/l2-withdrawal-times)
- [Ethereum TPS: Mainnet and Layer 2 Transactions per Second](https://voltfincrypto.com/apps/ethereum-tps)

Build it in Voltfin Studio: https://app.voltfincrypto.com/signup?next=%2F