Arbitrum Replaced Timeboost With Priority Gas Auctions
The Arbitrum One network has transitioned to a new transaction ordering system following a successful community vote.
Updated on Sept. 24, 2026 in Artificial Intelligence
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Arbitrum One replaced its 17-month-old Timeboost system with a new Priority Gas Auctions model on September 24, 2026. The move follows an onchain Constitutional AIP vote held in June 2026 to restructure how users compete for execution priority.
Why it matters
The transition replaces the previous system with a bidding structure intended to improve execution quality for decentralized finance protocols. This shift marks the conclusion of a formal constitutional process to redefine network transaction ordering.
Users now compete for priority by setting a maxPriorityFeePerGas value, with bids evaluated in 125-millisecond rounds within 250-millisecond blocks. Additionally, a new Fast Feed service splits revenue 97% to the DAO Treasury and 3% to developers.
The players
Arbitrum DAO
This is the decentralized autonomous organization responsible for the governance and treasury management of the Arbitrum ecosystem.
Arbitrum Developer Guild
This organization represents the community of developers contributing to the ongoing technical maintenance and upgrades of the network.
The details
The new system allows users to explicitly bid for transaction placement, moving away from the previous Timeboost mechanism. Simultaneously, the launch of the Fast Feed service provides subscribers with ordered transaction data ahead of the standard sequencer feed.
Timeline
April 2025: Timeboost transaction ordering system launched.
June 2026: Onchain Constitutional AIP vote for the transition passed.
September 24, 2026: The Priority Gas Auctions system went live.
The Tech Race
This transition highlights the ongoing evolution of layer-two sequencing mechanics in the competitive blockchain scaling sector. As networks mature, they are shifting from experimental ordering systems toward more transparent, governance-driven auction models to secure long-term efficiency.
Users interacting with the Arbitrum One network must now manage their transaction fees more strategically to ensure priority execution. This change necessitates an adjustment for traders and developers who rely on predictable, high-speed transaction inclusion.
The takeaway
The move to a market-based auction system signals a broader industry shift toward decentralized fee bidding for transaction priority. Users should monitor how these auction rounds affect their transaction speed compared to the prior system.
Further reading
Learn more about the latest innovations in decentralized infrastructure within the Artificial Intelligence section.
Source note: This article includes information reported by Crypto Briefing.
Live Poll
Is it fair for digital networks to allow paid priority access to transaction data?
