The adress is mine, and im stupid and idk how to use the curve to calculate it by myself. Inside are 5 bitcoins, or if anyone do help me to calculate it and get the private key, will get 1 btc, instead of buying the file for 0.5,adress is dorment since 9+ years
THIS IS SCAAAMWhat prevents you from re-selling that file several times and getting an amount higher than 5 bitcoins? And what will make someone who trusts you to send half a bitcoin to buy a file with unknown details, and may not be able to recover that money.
If you are serious about getting your money back, there is a reliable service
Link walletrecoveryservices.comANN topic https://bitcointalk.org/index.php?topic=240779.0Other than brute-force attempting password for wallet file, your coins are lost.
selling that file using this way is 100% scam.