Home/Blockchain/What is a Block?/Interactive Builder

🎮 Build Your First Block

Create and manipulate a real blockchain block to see how data and hashing work together

Your Progress

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🛠️ Build Your Own Block

Now it's your turn! Create a block by adding transactions and see how the hash changes in real-time.

📝 Block Editor

Alice → Bob: 2 BTC
Charlie → David: 1.5 BTC

🔍 Block Preview

BLOCK NUMBER
#750001
TIMESTAMP
2026-01-15 03:25:01
PREVIOUS HASH
00000b3c7d8e...
NONCE
0
CURRENT HASH
❌ Not Yet Mined
Click "Mine Block" to find a valid nonce

💡 What You're Learning

  • •Changing ANY data (transactions, nonce, previous hash) completely changes the block hash
  • •Mining is the process of finding a nonce that produces a hash meeting difficulty requirements
  • •The "Previous Hash" field is what links blocks together into a chain