Vendor Backup
Vendor Backup is a service by hardware wallet manufacturers that securely stores encrypted seed phrase shards with third parties, enabling recovery without self-custody of the full seed.
What Is a Vendor Backup?
A Vendor Backup is a service provided by hardware wallet manufacturers. It stores encrypted shards of a user's seed phrase with third-party custodians. Users recover their wallet without self-custody of the full seed phrase.
Vendor Backup works via secret sharing schemes like Shamir's Secret Sharing. The wallet software splits the seed phrase into multiple shards, such as five pieces where any three reconstruct the original. Each shard encrypts with unique keys tied to user identity verification. The vendor holds some shards on secure cloud infrastructure. Others distribute to independent recovery partners. To recover, users pass biometric or multi-factor checks. They then access enough shards to rebuild the seed.
For example, Ledger Recover splits seeds into five shards. It requires three for recovery: two with service providers and options for user-held shards.
Vendor Backup matters because self-custody risks permanent fund loss from seed phrase damage or forgetfulness. It adds recovery without full user custody, aiding inheritance or disaster recovery. Yet, it trades some decentralization for convenience. Users trust the vendor and partners against hacks or coercion.
Key characteristics include:
- Sharded secrets: No single party holds the full seed.
- Encryption: Shards protect with user-specific keys.
- Verification: Recovery demands proof of identity.
- Synonyms: cloud backup, manufacturer backup.
A backup in cryptocurrency is a secure copy of a wallet's seed phrase or private keys. It enables recovery of funds if the original wallet is lost or damaged.
Read full definitionSelf-custody means users control their own private keys to manage cryptocurrency assets directly, without third-party custodians. It embodies 'not your keys, not your coins.'
Read full definitionKYC (Know Your Customer) is the regulatory process where cryptocurrency exchanges verify users' identities using documents like ID or proof of address to prevent fraud and money laundering.
Read full definitionRecovery is the process of restoring access to a cryptocurrency wallet using its seed phrase or mnemonic backup if the original wallet is lost or inaccessible.
Read full definitionLedger is a brand of hardware wallets that securely store cryptocurrency private keys offline, such as the Ledger Nano series.
Read full definitionDecentralization spreads control and data across many independent nodes in a blockchain network, eliminating reliance on a single authority.
Read full definitionReal-World Examples
Example 1: Initial Setup
Alice sets up her Ledger Nano X. She enables Ledger Recover, the vendor backup service. The wallet splits her seed phrase into five encrypted shards. Two shards go to recovery partners; she holds none. This protects her funds if she loses her seed.
Example 2: Device Loss Recovery
Bob loses his Trezor wallet and his physical seed backup burns in a fire. If he had used a vendor backup like a manufacturer cloud service, he verifies identity via biometrics and email. He retrieves three shards to reconstruct his seed and access funds.
Example 3: Inheritance Planning
Carol plans her crypto estate. She activates vendor backup on her hardware wallet. She shares recovery instructions with heirs, including vendor contact details. Heirs use her verified identity proofs to access shards without her full seed phrase.
Example 4: Disaster Recovery
- Flood destroys David's seed backup metal plate.
- He logs into the vendor's recovery portal.
- Passes multi-factor authentication.
- Downloads enough shards to rebuild his wallet seed.
Ledger is a brand of hardware wallets that securely store cryptocurrency private keys offline, such as the Ledger Nano series.
Read full definitionA backup in cryptocurrency is a secure copy of a wallet's seed phrase or private keys. It enables recovery of funds if the original wallet is lost or damaged.
Read full definitionRecovery is the process of restoring access to a cryptocurrency wallet using its seed phrase or mnemonic backup if the original wallet is lost or inaccessible.
Read full definitionTrezor is a hardware wallet by SatoshiLabs. It stores private keys offline to secure cryptocurrencies.
Read full definitionInheritance planning in cryptocurrency ensures heirs access digital assets after death. It uses tools like dead man's switches or multi-signature wallets to securely share private keys.
Read full definitionCryptocurrency is a digital or virtual currency secured by cryptography, operating on decentralized blockchain networks to enable secure, peer-to-peer transactions.
Read full definitionTwo-Factor Authentication (2FA) secures cryptocurrency accounts and wallets by requiring two verification methods, such as a password plus a code from an authenticator app.
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