Polygon:

$USDC: 0x2791bca1f2de4661ed88a30c99a7a9449aa84174

https://polygonscan.com/token/0x2791bca1f2de4661ed88a30c99a7a9449aa84174

$oUSDC: 0x8de93f998b6b0dda780ee12b97dde1f2fadd3b1d

https://polygonscan.com/token/0x8de93f998b6b0dda780ee12b97dde1f2fadd3b1d

Ethereum:

$USDC: 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48

https://etherscan.io/token/0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48

Binance Smart Chain:

$USDC: 0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d

https://bscscan.com/token/0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d

OKExChain:

$USDC: 0xc946daf81b08146b1c7a8da2a851ddf2b3eaaf85

https://www.oklink.com/en/oec/tokenAddr/ex1e9rd47qmpq2xk8r63k32s5wa72e74tu9pqla3t

Gnosis / xDAI:

$USDC: 0xDDAfbb505ad214D7b80b1f830fcCc89B60fb7A83

https://blockscout.com/xdai/mainnet/token/0xDDAfbb505ad214D7b80b1f830fcCc89B60fb7A83/token-transfers

HECO:

$USDC: 0x9362bbef4b8313a8aa9f0c9808b80577aa26b73b

https://hecoinfo.com/token/0x9362bbef4b8313a8aa9f0c9808b80577aa26b73b