Koinly
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USDC reported as $0 cost basis
I had an issue with some USDC reported as $0 cost basis. I tried for hours to track it down and fix it but could not figure it out. I contacted support and within 24 hrs their AI had found the problem and corrected it. Part of it was related to time stamps. The AI also found and attempt by me to modify a transaction, which I did incorrectly, so it corrected that as well. Pretty amazing.