RIADeFi
The Digital Asset Control AtlasChart 2 · reviewed 2026-07-31

Arbitrum One: who orders transactions?

Centralised — >99% of transactions through a single sequencer

Hybrid control

Chain control is one layer. It does not determine the safety or suitability of every asset and protocol deployed on the chain.

Control profile

Control assessmentFavorable with conditions
Stagestage-1
Reviewed2026-07-31
Transaction ordering
Centralised — >99% of transactions through a single sequencer
Escape hatch
Forced inclusion via the L1 delayed inbox. forceInclusion threshold is 24 hours; in practice a full self-service exit is slow and costly.
Upgrade authority
DAO plus a security council. Admin keys can upgrade bridge contracts on roughly a 7-day timeline — as at every other top-5 L2.
Liveness record
Sequencer outages have occurred; user funds were never at risk, but access was.

Ketju control assessment

Stage 1 with live permissionless fraud proofs, which is the current state of the art — as of mid-2026 there are still NO Stage 2 rollups. So this is as good as an L2 gets, and it is still not Ethereum. Appropriate for yield-first and tokenised-income mandates where cheap transactions matter more than censorship resistance. NOT appropriate for a sovereignty-first mandate: a client who is paying us to make them un-freezable should not sit behind a single sequencer and a 7-day upgrade key.

Observable review triggers

  • Fraud proof system disabled or made permissioned
  • Force-inclusion delay extended beyond 24 hours
  • Security council threshold lowered, or upgrade timelock shortened below 7 days
  • Sequencer outage exceeding 6 hours

These triggers make the assessment monitorable. They are not predictions; each identifies a fact that would change or reopen the current control assessment.

Advisor implementation questions

  1. Does the client’s thesis require censorship resistance, or primarily low-cost settlement?
  2. Can the client exit without cooperation from the normal transaction-ordering party?
  3. Who can upgrade bridges or contracts, and what delay applies?
  4. Does the asset introduce an issuer weaker than the chain grade?
  5. What evidence will show a halt, censorship event, or governance change?

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