Out of curiosity, I looked into USDC and USDT on mainnet today. Some interesting facts (do with this information whatever you want):
- USDC has blacklisted a total of 239 addresses, while USDT has blacklisted 1,746 addresses.
- USDC has unblacklisted 6 addresses in total, whereas USDT has unblacklisted 62 addresses.
- The USDC contract has consumed a total of 2,077,864,213,467 gas since its deployment, in contrast to the USDT contract, which has used 8,484,080,450,292 gas.
- The USDT multisig wallet is a super old version that is incompatible with the current Safe UI, necessitating a simple self-hosted version.
- The USDT multisig wallet has encountered 72 transaction execution failures in total.
- The USDC contract has been upgraded 2 times since the original deployment. First upgrade was in on 26 April 26 2021 and the second and last upgrade on 8 January 2024.
- The USDC blacklister address got changed twice since deployment and the owner once.

𝐖𝐨𝐫𝐤𝐢𝐧𝐠 𝐨𝐧 𝐰𝐡𝐚𝐭'𝐬 𝐧𝐞𝐱𝐭.

https://github.com/pcaversaccio