Polygon:

$USDT: 0xc2132d05d31c914a87c6611c10748aeb04b58e8f

https://polygonscan.com/token/0xc2132d05d31c914a87c6611c10748aeb04b58e8f

$oUSDT: 0x413cfe1c41f98879365d665cacb7e79a60001fee

https://polygonscan.com/token/0x413cfe1c41f98879365d665cacb7e79a60001fee

Ethereum:

$USDT: 0xdac17f958d2ee523a2206206994597c13d831ec7

https://etherscan.io/token/0xdac17f958d2ee523a2206206994597c13d831ec7

Binance Smart Chain:

$USDT: 0x55d398326f99059ff775485246999027b3197955

https://bscscan.com/token/0x55d398326f99059ff775485246999027b3197955

OKExChain:

$USDT: 0x382bB369d343125BfB2117af9c149795C6C65C50

https://www.oklink.com/en/oec/tokenAddr/ex18q4mx6wngvf9h7epz7hec9yhjhrvvhzsrd3uje

Gnosis / xDAI:

$USDT: 0x4ECaBa5870353805a9F068101A40E0f32ed605C6

https://blockscout.com/xdai/mainnet/token/0x4ECaBa5870353805a9F068101A40E0f32ed605C6/token-transfers

HECO:

$USDT: 0xa71edc38d189767582c38a3145b5873052c3e47a

https://hecoinfo.com/token/0xa71edc38d189767582c38a3145b5873052c3e47a