A Hierarchical Deterministic (HD) wallet?
A hierarchical deterministic (HD) wallet stores digital keys for cryptocurrency holders like Bitcoin and Ethereum. A copy of the public and password-like private key allows anybody to control the account’s cryptocurrency.
HD wallets explained
Cryptocurrency wallets have keys, not money. A cryptocurrency wallet consists of a public key serving as an account number and a private key for transferring funds to other accounts. Private keys resemble passwords. People moving bitcoins from their accounts use their private keys to authorize the transaction.
Using public and private keys ensures security against hackers and transaction anonymity. The private key must be secure since the pair of keys transfers bitcoin. Randomly generated keys achieve this.
The wallet must back up each key to protect the owner from losing it and the cash it links to. Each transaction would require a new pair of keys to preserve privacy—one of Bitcoin and other cryptocurrencies’ main goals—and restrict public key use to one transaction. This can become tough to handle.
The creation of deterministic wallets allows for the traceability of all keys to an original seed, often a collection of random words and a hash function. A deterministic wallet only needs one backup upon creation since the original seed can recover all private and public keys.
Deterministic vs. Hierarchical Wallets
The most advanced deterministic wallet is HD. In a tree structure, parent keys can spawn children keys, produce grandchildren keys, and so on forever. The tree structure lets Bitcoin holders categorize transactions by kind or entity, such as departments or subsidiaries.
Like essential deterministic wallets, all HD wallets have a single master root seed, generally a mnemonic word sequence, making them easier to copy and store. HD wallets allow public key creation without private key access. They work on vulnerable servers in receive-only mode.
Conclusion
- Bitcoin and Ethereum holders keep their keys in hierarchical deterministic wallets.
- The wallet must store randomly generated keys to prevent hacking.
- HD wallets produce several key pairs from one random seed, making them secure and convenient.