The Robonomics parachain on Kusama (para ID 2048) stopped producing blocks on September 28, 2026. The final block is #12,268,835 (19:48 UTC), the last Robonomics head finalized by the Kusama relay chain (Paras.Heads(2048)).
Kusama hosted the Robonomics R&D stage since 2021. Production has moved to Polkadot, and this closes the Kusama chapter.
How we stopped it
Our first attempt was a multisig call that removed Session::QueuedKeys. The session set did go empty at the next rotation, but Aura kept its authority list, so blocks kept coming. We then enacted a final runtime upgrade (spec version 49) through the team multisig. It took effect at block #12,268,835, which became the final one. The collators authored three more blocks on top of it (up to #12,268,838), but the relay chain never included them. Coretime on Kusama ran until September 22 and was not renewed.
The chain state at the final block stays as it is. A database archive of the parachain is available at snapshots.robonomics.network/#kusama.
What happens to Kusama XRT
All XRT balances at the final block move to Polkadot with a +20% bonus. There is no buyback option on the Kusama side.
Why the difference from Ethereum: for XRT holders on Ethereum the move to Polkadot was a pivot — a lot changed for them, so they were offered a choice. For Kusama holders nothing changes except the step from R&D into production. The bonus is our thank-you for getting to production together. Details on where the balances show up will follow in a separate post.
Blog post: robonomics.network/blog/robonomics-kusama-parachain-stopped
Thanks to the Kusama community and to everyone who ran collators and built on Robonomics there.
— EnsRationis, software architect at Robonomics