Hi,

Lets say for example I want to store hodl $1 Billion in USDC for a very long time in a hardware wallet but not on the main Ethereum network due to its expensive gas fees but on Eth Layer 2's instead like Solana or Polygon for faster and cheaper fees.

However...

If Price of Solana or Polygon crashes to $0 then what will happen to my $1Billion USDC on either of these chains? Will USDC De-Peg on just these chains? Solana or Polygon are POS chains not POW so what happens if validators of those chains unstake their Solana or Polygon and Panic sell their Solana or Polygon tokens, will this destroy/finish the polygon or solana L2 pos networks or decrease the security of these networks making these networks weak for hacks meaning my £1billion usdc is stuck forever in 'network limbo' or gets stolen hacked easily in those L2's and by then will it be impossible to bridge back my $1 Billion USDC back to the main Ethereum network and I lose a $Billion forever?
What is Circle, issuer of USDC legal stance on this risk, are Circle responsible for USDC on Layer 2's?

This new Base L2 network by Coinbase, does it have its own native network token coin?