Good day,
I don’t understand one thing about dydx.

Everything is shown in USD on dydx.
But is it real USD or is that USDC that have been converted to USD

I need this information urgently as I have to do my tax return soon.
I just don’t know if I can use the USD values on dydx directly to calculate, or if I have to see the USD as USDC first and then have to change it to real USD

So:
What happens if the USDC falls from 1$ to 0.5$ ?

Example 1: ( dydx shows me USD / 1 USD = 2 USDC )
Portfolio Value = 1.000$ so this will be 2.000USDC
Position Size = 3.000$ so this will be 6.000USDC
Fee = 100$ so this will be 200USDC
Unrealized P&L = 6.000$ so this will be 12.000USDC
Realized P&L = 150$ so this will be 300USDC

Example 2: ( dydx shows me USDC as USD value / 1 USD = 1 USDC = 0,5 USD )
Portfolio Value = 1.000$ so this will be 1.000USDC ( 500$ )
Position Size = 3.000$ so this will be 3.000USDC ( 1.500$ )
Fee = 100$ so this will be 100USDC ( 50$ )
Unrealized P&L = 6.000$ so this will be 6.000USDC ( 3.000$ )
Realized P&L = 150$ so this will be 150USDC ( 75$ )

In my experience it’s USD being shown (ie 1 usdc = 1 usd). If I don’t trade my portfolio value doesn’t fluctuate, that’s enough to tell you it’s not usdc. Please don’t offer to pay, that can lead to scams.

I deposit 10,000USDC and my Portfolio Value shows me 5,000USD.
Now I open a Position with the 5,000USD and pay a Fee of 100USD.
After 6 months, Unrealized Profit is 10,000USD.
And now i close my Position.

Will my Portfolio Value be 9,900USD?
( Because the 10,000USD Profit is 10,000USDC and this is 5,000USD )

Or will my Portfolio Value be 14,900USD?
( Because the 10,000USD Profit is only the USD value from USDC )

Or will my Portfolio Value be 14,900USD?
( Because the 10,000USD Profit is real USD )

So as I get it, while the value in USDC may remain constant, the equivalent value in USD may fluctuate if there’s a USDC depeg from USD.
However, the fundamental mechanisms of dydx remain intact to ensure market stability.