# Sky proposes new Spark Arbitrum controller, bridge limits, and governance controls

> If approved and executed, the package would establish a 5 million USDC per-domain maximum and 50 million USDC/day slope for the new CCTP route;

- URL: https://riadefi.com/on-chain/2026-09-28-sky-spark-arbitrum-october-8-2026-spell/
- Type: Control change
- Stage: Proposed
- Evidence: confirmed
- Materiality: material
- Event date: 2026-09-28
- Version: 1, published 2026-09-29 (first published 2026-09-29)
- Follow-up: 2026-10-09
- Advisor-relevant: yes
- Affects: Sky (protocol)

## What happened

Sky’s official governance forum published a package of proposed Spark changes for an October 8 spell. The package would activate a new Arbitrum Diamond PAU parallel controller and CCTP v2 route, alter administrative authority, and rebalance substantial Arbitrum liquidity.

## What changed

If approved and executed, the package would establish a 5 million USDC per-domain maximum and 50 million USDC/day slope for the new CCTP route; give designated parties emergency revocation powers; authorize the PAS Configurator over access controls and rate limits; transfer Beacon administration from the Spark Executor to the Sky governance relay; bridge 100 million sUSDS to Arbitrum; and return excess USDS to Ethereum.

## What did not change

The package was proposed and placed into Snapshot voting but was not yet an executed spell. Default assets were not reported lost or impaired. The record also says the Beacon’s already registered CCTP facet does not depend on the proposed administrator transfer for the concurrent controller activation.

## Confirmed

- The proposed CCTP v2 per-domain maximum is 5 million USDC and its replenishment slope is 50 million USDC per day.
- The proposed sUSDS transfer is 100 million sUSDS from the Ethereum ALM Proxy toward the Arbitrum ALM Proxy.
- The package proposes independent emergency revocation paths for Spark and Soter Labs.
- The Beacon administrator would move from the Arbitrum Spark Executor to the Sky governance relay.
- The official record says Cantina’s review of the Arbitrum deployment and parallel-controller architecture was not finished at the time of the risk review.

## Still open

- Whether each Snapshot poll will pass and be included unchanged in the final executive spell.
- Whether the spell will execute successfully and the final on-chain permissions and rate limits will match the proposal.
- The final completion and findings of the referenced Cantina review.
- The operational reaction time of the emergency parties under the higher rate-limit slope.

## What it means for an advisor

- Review the Sky memo’s Arbitrum control map if the spell is approved or executed.
- Confirm the final emergency roles, rate limits, Beacon administrator, and controller permissions on chain before treating the architecture as operative.
- Assess whether the proposed liquidity rebalancing or faster CCTP route changes dependency and exit assumptions for any Sky-linked position.

## Previous interpretation

The Sky memo reflects the prior Spark Arbitrum controller, administrator, and liquidity-routing configuration.

## Sources

1. [October 8, 2026 Proposed Changes to Spark for Upcoming Spell](https://forum.skyeco.com/t/october-8-2026-proposed-changes-to-spark-for-upcoming-spell/28265) · Sky governance forum · 2026-09-28


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Published by Ketju Research on RIADeFi (https://riadefi.com). Educational research for financial professionals; not investment, legal, tax, or compliance advice.