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Bitcoin Basics for Beginners

Essential Bitcoin Knowledge for First-Time Users

When using Bitcoin for the first time, the most confusing questions are usually: "What is a wallet?" "What is an exchange?" "Where is my Bitcoin actually stored?" At Akasha, understanding this structure simply and clearly is what matters most. This page is a beginner's guide for anyone who wants to start using Bitcoin as a real asset.

Before anything else, remember this one sentence:

"You buy Bitcoin on an exchange, move it to your own wallet to store it, and use a Lightning wallet for payments."

To understand this, you only need to remember four basic concepts.

The Four Key Concepts You Need to Know

  • Exchange = Where you buy Bitcoin
  • Wallet = Where you store and use Bitcoin
  • Lightning Wallet = A wallet for making payments
  • Cold Wallet (Hardware Wallet) = A safe vault for long-term storage

Bitcoin typically moves in this flow: Exchange → Personal Wallet → Payment → Storage

Step 1. Exchange

Purpose: To acquire Bitcoin for the first time.

An exchange is where you buy Bitcoin and later convert it back into cash. It is connected to your bank account, allowing you to deposit fiat currency and purchase Bitcoin.

Common exchange examples:

  • Upbit
  • Bithumb
  • Binance
  • Coinbase

Think of an exchange as a place you use only when buying or selling Bitcoin.

⚠️ Important: Bitcoin held on an exchange is not fully under your control. The exchange holds it on your behalf. To actually use Bitcoin, you must withdraw it to your own wallet.

Step 2. Personal Bitcoin Wallet

Purpose: To make Bitcoin truly yours.

A personal wallet is where you directly store and control your Bitcoin. It is not a bank account—it is a digital vault that only you have the key to.

Key points about wallets:

  • Your Bitcoin lives in your wallet
  • Whoever controls the wallet controls the Bitcoin
  • When you create a wallet, you receive a recovery phrase (mnemonic)

⚠️ The mnemonic is the key to your wallet. Write it down on paper and store it safely. If you lose it, no one can recover your wallet for you.

Step 3. Lightning Wallet (Payment Wallet)

Purpose: To actually use Bitcoin.

A Lightning wallet is used for everyday payments, such as at cafés or restaurants.

Features of Lightning wallets:

  • Very fast payments (usually within seconds)
  • Extremely low fees
  • Payments made by scanning QR codes

Examples of Lightning wallets:

  • Akasha App Wallet
  • Muun
  • Phoenix
  • Breez

👉 With Akasha, you can create a Lightning wallet immediately after installing the app—no separate wallet signup required.

A Lightning wallet can be understood as a "wallet inside your wallet."

Step 4. Cold Wallet / Hardware Wallet (Long-Term Storage)

Purpose: To store Bitcoin safely for the long term.

A cold wallet is a wallet not connected to the internet, usually in the form of a hardware device (similar to a USB). Cold wallets are optional and more advanced. For beginners, a Lightning wallet alone is often sufficient.

Common hardware wallet examples:

  • Ledger
  • Trezor

Cold wallets:

  • Are used for long-term storage
  • Have very low hacking risk
  • Are inconvenient for payments (on-chain transactions take longer)

Many people use Bitcoin like this:

  • Spending money → Lightning wallet
  • Savings → Cold wallet

The Full Flow at a Glance

1️⃣ Exchange (Upbit / Binance)
   → Buy Bitcoin

2️⃣ Withdraw to personal wallet
   → Bitcoin becomes fully yours

3️⃣ Split by purpose
   ├─ Lightning wallet (Akasha) → Payments
   └─ Cold wallet (Ledger / Trezor) → Storage

Where Does Akasha Fit In?

Akasha belongs to the payment stage and the Lightning wallet stage.

  • Akasha is not an exchange
  • Akasha does not custody your Bitcoin (Your Bitcoin remains in your personal Lightning wallet)
  • Akasha is a P2P map platform that connects payments

Most Lightning wallets today are custodial, meaning the provider holds the keys. Akasha, however, provides non-custodial wallets, where all keys are controlled by the user—fully aligned with Bitcoin's philosophy.

You can use any existing Lightning wallet with Akasha. If you don't have one, you can easily create a non-custodial wallet directly in the app.

How Do You Convert Bitcoin Back to Cash?

Bitcoin can only be converted to cash through an exchange. However, most exchanges do not support Lightning deposits, so one extra step is required.

Withdrawal Process

Since you cannot send Bitcoin directly from your Lightning wallet to an exchange, you must first send it to an on-chain personal wallet. (This is separate from a cold wallet.)

1. Send Bitcoin from your Lightning wallet to an on-chain personal wallet.

On-chain wallet examples:

  • Akasha on-chain wallet
  • BlueWallet
  • Exodus

⚠️ Important: Use an on-chain Bitcoin address, not a Lightning invoice. Always send a small test amount first. Bitcoin transactions cannot be reversed.

2. Send Bitcoin from your on-chain wallet to the exchange

Log in to your exchange (Upbit, Bithumb, Binance, Coinbase, etc.). Select Deposit → Bitcoin (BTC) and copy the BTC deposit address. Open your wallet, tap Send, and paste the address. Confirm the amount and fee, then send.

On-chain transfers usually take 10 minutes to 1 hour.

3. Convert Bitcoin to cash on the exchange

Once Bitcoin arrives at the exchange, you can convert it to cash:

  • Sell Bitcoin
  • Convert to KRW or USD
  • Withdraw to your linked bank account

Bitcoin is now converted back into cash.

How Do Fees Work?

This is the most common beginner question.

① Lightning payment fees

  • Extremely low or near zero
  • Usually paid by the sender
  • No fees for merchants

② On-chain transaction fees

  • Occur when moving Bitcoin to an exchange
  • Depend on network congestion
  • Can be a few dollars or more (Best to transfer larger amounts at once)

③ Exchange trading fees

  • Very small
  • Charged once when selling Bitcoin

Akasha does not charge any fees in this process.

Beginner-Friendly Practical Tips

If you're just starting, this is the safest approach:

  • Keep only a small spending balance in your Akasha Lightning wallet
  • Move larger amounts to a personal wallet for long-term storage
  • Convert Bitcoin to cash only when needed