Understanding the m/ Purpose / Coin Type Structure
Every derivation path begins with m, the master node. This is the root of the entire key tree, created directly from your seed phrase. From there, the path follows a standard pattern defined in BIP-44: m/purpose'/coin_type'/account'/change/address_index. The first three levels after m have special meaning and almost always use hardened derivation.
The Purpose Level
The first number after m is the purpose field, almost always set to 44 followed by an apostrophe to indicate hardening. This number signals that the wallet follows the BIP-44 standard for multi-account, multi-coin hierarchies. Using 44 tells any compatible software exactly how to interpret the rest of the path. Some wallets use other purpose values like 49 for nested SegWit or 84 for native SegWit, but 44 remains the most common baseline.
The Coin Type Level
The second level is coin type, also hardened. This value comes from the SLIP-44 registry and identifies which cryptocurrency the path belongs to. Bitcoin uses 0, Ethereum uses 60, Binance Coin uses 714, and many others have their own assigned numbers. Hardening this level ensures that keys for different coins remain cryptographically separated even if the same seed is used. This protects against cross-chain attacks and keeps funds isolated by design.
Why Hardening Matters Here
Hardened derivation uses a different cryptographic method that prevents child keys from being derived if someone knows a public key higher in the tree. For the first three levels this adds an important layer of security, especially when the same seed manages multiple blockchains.
The tool highlights these levels clearly in the visualizer. You can immediately see which segment is hardened and what coin type is recognized, helping you confirm that a path matches the wallet you expect.
FAQ
What happens if coin type is not hardened?
Most wallets reject or warn about non-hardened coin types because it reduces security. The explainer enforces this standard to teach correct usage.
Can I use the same purpose for different coins?
No. Purpose is usually fixed per standard, while coin type changes to separate assets. Using the wrong purpose can cause compatibility issues.
Where can I find coin type numbers?
They are listed in the official SLIP-44 registry maintained by the cryptocurrency community.
The next article explains how the change level separates receive and change addresses in everyday wallet use.