Yes but why do i have 12 seed phrases instead of 24 if my wallet is from the early 2014 and the other one from 2015?
Maybe you remembered it wrong?
During those years, Blockchain(
dot)info issued "
Password Backup Mnemonic" (
number of words varies per version) instead of "
BIP39 Seed" (
they're currently using 12-words)
The latter can restore the wallet without a copy of your "
wallet.aes.json" file from their server or your own offline/email backups.
The former isn't actually a seed, read my previous reply on what it actually is.
Since you said it's 12 words and contains BIP39 wordlist, you can try to restore it to any wallet that supports BIP39. The first few replies already got it covered.
For automated but online way, you can try Electrum's "
Detect Existing Accounts" button when restoring a BIP39 seed.
In case i dont have the Wallet-ID, but only the seed phrase and the wallet is secured with 2-auth ( email ) and i have no access to the email, how can i recover it if it still asks for the email code even if i can proove to be the ultimate owner of the wallet having the seed phrase?
If it's a BIP39 seed, you don't have to go through all of that, the seed phrase can already restore all of your private keys.
If it's a password recovery mnemonic, yeah, it requires email verification (
it's not 2FA BTW) and one way to get through that is to contact their customer support, (
heads-up) which will be frustrating.
Another possibility is if your wallet is upgraded from old to new version and you've just exported the seed phrase after the upgrade;
in this case, that BIP39 seed is used to generate your new private keys while your old keys are saved under your imported keys.
And in this case, restoring the seed phrase to other wallets will obviously result with incomplete private keys since the old unrelated keys aren't generated by it.