Useful ·September 11, 2026

What Is a Seed Phrase, Private Key, and Public Address — What’s the Difference?

What Is a Seed Phrase, Private Key, and Public Address — What’s the Difference?

When someone creates a cryptocurrency wallet for the first time, they usually encounter three important terms:

  • seed phrase;

  • private key;

  • public address.

They serve very different purposes.

The main rule is simple:

you can share your public address, but your seed phrase and private key must remain private.

Let’s look at what each one does and why the difference matters.

What Is a Public Address?

A public address is the destination to which cryptocurrency can be sent.

It can be compared to a bank account number.

For example:

Ethereum:
0x71A...93F2

Bitcoin:
bc1q...

TRON:
TQ8f...

A public address can be:

  • shared with another person;

  • entered into an exchange order;

  • used to receive cryptocurrency;

  • checked through a blockchain explorer.

Knowing the address alone does not allow someone to spend the funds.

However, depending on the blockchain, the address may reveal public information such as balances and transaction history.

What Is a Private Key?

A private key is secret data that allows the owner to authorize cryptocurrency transactions.

If a public address is similar to a bank account number, the private key is closer to the key to the account itself.

It is used to sign transactions and prove that the person sending the funds has the authority to do so.

Anyone who obtains the private key may be able to control the assets associated with it.

What Is a Seed Phrase?

A seed phrase is a sequence of words used to restore a cryptocurrency wallet.

It most commonly contains:

  • 12 words;

  • 18 words;

  • 24 words.

If a phone is lost, an app is deleted, or a device stops working, the seed phrase can be used to restore the wallet on another compatible device.

A single seed phrase can generate multiple private keys and addresses.

This means it may provide access to several accounts and cryptocurrencies within the same wallet.

Seed Phrase vs. Private Key vs. Public Address

The easiest way to understand the relationship is:

Seed phrase → private keys → public addresses.

A public address is used to receive funds.

A private key allows transactions to be authorized.

A seed phrase can restore the wallet and the keys generated from it.

A Simple Analogy

Imagine a cryptocurrency wallet as a house.

Public address — the address of the house.
You can give it to someone who needs to find it.

Private key — the key to a door.
It allows access.

Seed phrase — the master backup that can recreate the keys.

This is why the public address can be shared, while the private key and seed phrase should remain confidential.

Where Is Cryptocurrency Actually Stored?

Cryptocurrency is not physically stored inside a phone or wallet application.

Ownership and transaction data exist on the blockchain.

The wallet manages the cryptographic keys that allow the user to control those assets.

That is why deleting a wallet app does not automatically destroy the cryptocurrency.

If the necessary recovery information is available, access can usually be restored.

What Happens If You Lose Your Phone?

With a non-custodial wallet, losing a device does not necessarily mean losing the funds.

If the seed phrase has been stored safely, the wallet can usually be restored on another compatible device.

The real problem occurs when access to the device is lost and no valid backup of the wallet exists.

Unlike a traditional online account, there may be no company capable of resetting access for you.

How Should a Seed Phrase Be Stored?

A seed phrase should be stored in a way that protects it from both loss and unauthorized access.

Common precautions include:

  • keeping an offline backup in a secure location;

  • considering more than one independent backup for significant funds;

  • avoiding ordinary cloud notes or messages;

  • avoiding unnecessary screenshots or photos;

  • verifying that any wallet used for recovery is the genuine official application.

For larger holdings, hardware wallets and durable physical backup solutions may also be considered.

The key principle is simple: anyone who obtains the seed phrase may be able to restore the wallet elsewhere.

Beware of Requests for Your Seed Phrase or Private Key

A legitimate exchange, wallet support team, or crypto exchanger generally does not need your seed phrase or private key to:

  • check a TXID;

  • investigate a transfer;

  • review an exchange order;

  • locate a deposit.

Requests such as “send us your 12 words” or “enter your seed phrase to verify the account” should be treated as a major warning sign.

The same applies to unfamiliar websites or apps asking you to import a wallet using its recovery phrase.

Custodial vs. Non-Custodial Wallets

There is another important distinction.

Non-Custodial Wallet

The user controls the keys directly.

These wallets commonly provide a seed phrase, and the user is responsible for keeping it safe.

Custodial Service

A platform such as an exchange may control the wallet keys on behalf of the user.

Access is usually managed through:

  • an account;

  • password;

  • two-factor authentication.

In this model, the platform generally does not provide the user with the seed phrase for its internal wallets.

Seed Phrase and Wallet Password Are Not the Same

A wallet password usually protects the application on a particular device.

A seed phrase can restore the wallet on another device.

This means a strong app password does not replace proper seed phrase security.

What Do You Need to Receive Cryptocurrency?

To receive cryptocurrency, you usually only need:

  • the public address;

  • the correct blockchain network;

  • Memo or Tag, if required.

You do not need to provide a seed phrase or private key simply to receive funds.

What Matters When Using IXIDE

When exchanging through IXIDE, users may provide a public wallet address for receiving cryptocurrency.

Before creating an order, check:

  • the wallet address;

  • the selected network;

  • Memo or Tag, if required.

A seed phrase or private key is not required for a normal exchange through IXIDE.

Key Takeaway

The difference can be remembered in three lines:

Public address — shareable.
Used to receive cryptocurrency.

Private key — secret.
Used to control and authorize transactions.

Seed phrase — recovery secret.
Can restore the wallet and potentially all associated accounts.

For beginners, the most important principle is simple: share the address, protect the keys.