# Collator & Node Operators

**URL:** https://forum.astar.network/c/astar-governance/collator-node-operators/39.md

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## [About the Collator & Node Operators category](https://forum.astar.network/t/about-the-collator-node-operators-category/9081)

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**Author:** [@Gaius\_sama](https://forum.astar.network/u/Gaius_sama)\
**Replies:** 0

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## [Collator set: removing RadiumBlock from the Astar and Shiden invulnerable set following RPC discontinuation](https://forum.astar.network/t/collator-set-removing-radiumblock-from-the-astar-and-shiden-invulnerable-set-following-rpc-discontinuation/9510)

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**Author:** [@Gaius\_sama](https://forum.astar.network/u/Gaius_sama)\
**Replies:** 4\
**Last updated:** [June 22, 2026, 3:47pm UTC](https://forum.astar.network/t/collator-set-removing-radiumblock-from-the-astar-and-shiden-invulnerable-set-following-rpc-discontinuation/9510 "2026-06-22T15:47:13Z")

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TL;DR RadiumBlock has notified us they are discontinuing their public RPC for Astar and Shiden. Their nodes were carried in the invulnerable (bond-free) collator set as part of that infrastructure relationship. With the…