---
title: Wallets
description: "# Wallets ## Deterministic [Wallet](https://bitcoindevelopers.org/encyclopedia/wallet/) Formats ### Type 1: Single Chain Wallets Type 1 deterministic wallets are the simpler of the two, which can create a single series of keys from a single seed. A primary weakness is that if…"
url: "https://bitcoindevelopers.org/docs/reference/wallets-ref/"
updated: "2025-05-13"
category: Reference
---

# Wallets

# Wallets

## Deterministic [Wallet](https://bitcoindevelopers.org/encyclopedia/wallet/) Formats

### Type 1: Single Chain Wallets

Type 1 deterministic wallets are the simpler of the two, which can create a single series of keys from a single seed. A primary weakness is that if the seed is leaked, all funds are compromised, and [Wallet](https://bitcoindevelopers.org/encyclopedia/wallet/) sharing is extremely limited.

### Type 2: Hierarchical Deterministic (HD) Wallets

  ![Overview Of Hierarchical Deterministic Key Derivation](https://bitcoindevelopers.org/wp-content/uploads/2025/05/en-hd-overview.svg)

Overview Of Hierarchical Deterministic Key Derivation

For an overview of HD wallets, please see the developer guide section. For details, please see BIP32.