# Sky Proposes Osero Upgrade Linking Ethereum and Base

> Sky's Nov. 19 upgrade links Ethereum and Base via Osero for cross-chain USDC transfers.
- Title: Sky Proposes Osero Upgrade Linking Ethereum and Base
- Summary: Sky's Nov. 19 upgrade links Ethereum and Base via Osero for cross-chain USDC transfers.
- Keywords: sky, osero, base, ethereum, usdc, gauntlet, cross-chain, spell, crypto, TokenPost
- Source: TokenPost — https://tokenpost.com/news/technology/50505
- Published: 2026-11-07T02:11:35+00:00
- Read time: 1 min
- Topics: sky, osero, base, ethereum, usdc, gauntlet, cross-chain, spell, crypto, finance
## Sky Ecosystem Proposal
A Sky ecosystem forum proposal would link Osero’s liquidity layer on Ethereum and Base in a Nov. 19 upgrade, enabling cross-chain USDC transfers and adding a Gauntlet-managed vault on Base.
## Proposed Changes
The proposal lists seven changes across Ethereum mainnet and Base, including activating Circle’s Cross-Chain Transfer Protocol (CCTP) on both networks, setting limits for cross-chain USDC transfers, and creating a permissions mechanism on Base.
## Osero and Prime Agents
Osero represented 1% of Sky’s combined assets as of September 2026, while Prime Agents collectively represented about 65% of Sky’s assets.
## Key takeaway

Sky's ecosystem forum proposal enables cross-chain USDC transfers between Ethereum and Base through an Osero upgrade scheduled for November 19.