The digital "codes" required to spend your coins. Public keys/addresses: Your receiving information. Transaction history: A local record of your activity.
Never perform verification or recovery on your only copy of a wallet.dat file. Always create a "Read-Only" backup first. Final Thoughts indexofwalletdat verified
If your index seems off, most core wallets allow you to run a command-line argument ( -rescan ) which re-verifies the wallet's data against the blockchain. The digital "codes" required to spend your coins