Add Opera Wallet

[PhilC813]

The Opera Crypto Wallet, which is included with the Opera web browser, isn't listed. I couldn't find the information on the derivation path unfortunately, and my attempts to get in touch with an Opera employee have failed for now.

[PhilC813]

It appears to use BIP49, resulting in a ypub key.

(Confirmed by adding BTC to my personal Opera BTC wallet, providing the wallet's recovery phrase in the "BIP39 Mnemonic" field of iancoleman's "Mnemonic Code Converter" tool, selecting the BIP49 derivation path, adding the resulting ypub key to a financial aggregation app, and confirming that the transaction and balance are displayed correctly)