This article has 3 sections - one for the new Blockchain.info wallets based of BIP39 seeds, one for classic wallet addresses imported into the new wallet and one for the classic old wallets.
What Is Private Key In BlockchainFor Blockchain.info's newer wallets based on a recovery phrase
Note: Blockchain.info's new wallets make use of a bip39 recovery seed to generate EVERY ADDRESS and PRIVATE KEY in your Blockchain.info account. At this time it is not possible to extract only 1 address' private key so the only option is to make use of the recovery seed to gain access to the address that has your OmniTokens. Extreme care should be taken to perform the following steps on an airgapped/offline machine to preserve the integrity of your recovery seed. You may even want to consider this method a fallback/last resort and after completing the recovery actions discard all addresses/wallets/accounts and start a new Blockchain.info wallet.You have been warned
Feb 26, 2018 This article will explain at a high-level Private and Public Key Cryptography used in Bitcoin and it’s unique security feature. We will be looking at how Public Keys are generated, why this is. Whenever a new address is generated, internally that means a new private key and public key are generated. Note that with BIP32 and BIP44, private keys can be generated deterministically from a master key or a seed, in which case these new private keys do not necessary need to be saved - they can just be regenerated from the seed or master. This is why your Blockchain wallet will have no way of knowing or finding the private key of a Non-Spendable address. Since your wallet does not know the address’ private key and considers the funds to be unusable, any balance present on a Non-Spendable imported address will not be included in the total wallet balance.
For Blockchain.info addresses imported into the New Blockchain.info Wallet from Blockchain.info's Classic WalletsPrivate Keys Blockchain
Private Blockchain ExamplesFor Blockchain.info Classic WalletsWhat Is A Private Key In Blockchain
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