Official MASTR logo MASTR Support the work
Contents
← Wiki home

Chains & networks

Arbitrum: rollups and AnyTrust have different assumptions

The technology name alone does not tell you where transaction data is available.

Network guide · 1 min read

Research articles and reference entries are published in English. Navigation is available in seven languages.

People & projects

In this article
  1. Ask about the deployed chain

Arbitrum's documentation distinguishes rollup data posted to the parent chain from AnyTrust's use of an external data-availability committee. The committee model reduces costs by adding a trust assumption. It should not be described as the same arrangement merely because both use Arbitrum technology.

Ask about the deployed chain

Identify the chain, settlement layer, data-availability method, sequencer and upgrade controls. An application-specific chain built with familiar software may choose different operators and settings. A bridge also has a particular withdrawal path and asset mapping.

The practical question is whether users can obtain the data and exercise the withdrawal path if an operator becomes unavailable. Emergency powers, delays and supporting infrastructure affect that answer.

Compare the actual deployment against its documentation. Do not import a reputation score from another chain in the same software family. Read layer 2 and bridges for the wider comparison.

Sources

  1. Arbitrum: AnyTrust and rollup data availability

Research checked 5 September 2026. Historical cases retain the date and legal status of the cited record.

Related reading

MASTR

Support independent research

The investigations, original evidence and guides here are free to read. Voluntary donations help fund the research and keep MASTR’s tools available.

Open wallet