Biblepay mobile wallet uses BIP39 hierarchical deterministic (HD) wallet.
The way it works is: it creates a new main address for each receive transaction, and a new change address for each change output.
Both main and change addresses can be found using a tool like this:
https://iancoleman.io/bip39/But the official one does not support Biblepay so I prepared one version that supports it.
I can send it to you by email or even upload it to biblepay.org download area.
The way to proceed is:
- Run the bip39 JavaScript tool locally in a browser (should be an offline machine)
- enter the 12 word seed and select Biblepay in the coin select field.
- In Derivation Path, choose BIP32 and “Multibil HD” client field.
You should then see all private/public keys and addresses
use a block explorer to test both main and change addresses until you find several empty ones or you are sure you have rescued all your funds from the mobile wallet.
IMPORTANT WARNING: this method should be used only for emergency recovery of mobile wallet funds, before abandoning the 12 word seed for good. This is, once the above method is applied, the (Hopefully empty) 12 word mobile wallet should be wiped out and replaced by a new 12 word seed.
IMPORTING PRIVATE KEYS FROM MOBILE HD WALLET INTO CORE FOR DAILY USE PURPOSES IS CONSIDERED HIGHLY RISKY AND NOT RECOMMENDED. YOU RISK LOSING FUNDS OR GETTING YOUR FUNDS COMPROMISED.