Bitcoin Block Explorer - Navigate the Blockchain

Latest Blocks (avg 12min41s between blocks)

BlockTransactionsTime
962,0164116
962,0154055
962,0144304
962,0134542
962,0123516
962,0114239
962,0103464
962,0093808
962,0084773
962,0075062
962,0064460
962,0054677
962,0045289
962,0035947
962,0025731
962,0015982
962,0006304
961,9995416
961,9985670
961,9973673
961,9964801
961,9955322
961,9945521
961,9934627

A block explorer lets you browse Bitcoin blocks from genesis to the latest, showing transactions, miner information, timestamps, and the cryptographic links chaining blocks together. Use robtex.com to navigate the blockchain.

Understanding Bitcoin Blocks

Blocks are containers of transactions, created approximately every 10 minutes:

  • Block height - Sequential number from genesis (block 0) to present
  • Block hash - Unique identifier from mining (starts with zeros)
  • Transactions - All transactions confirmed in this block
  • Timestamp - When the block was mined
  • Miner - Mining pool or entity that found the block
  • Size - Data size in bytes
  • Weight - Size measurement for fee calculation

Block Details Explained

Previous block hash - Cryptographic link to the parent block. This chain of hashes is what makes blockchain immutable.

Merkle root - Hash summarizing all transactions. Allows efficient verification without downloading entire blocks.

Difficulty - How hard it was to mine this block. Adjusts every 2016 blocks.

Nonce - The value miners varied to find a valid hash.

Coinbase transaction - First transaction in every block, creating new BTC as mining reward.

Enter a block height (like 840000) or block hash to view specific blocks. Browse sequentially using previous/next links.

The genesis block (height 0) was mined January 3, 2009. Block height increases every ~10 minutes on average.

Special Blocks

Halving blocks - Every 210,000 blocks, the mining reward halves. Block 840,000 was the 2024 halving.

Historical milestones - First transaction (block 170), first Bitcoin purchase (block 57043), etc.

Large blocks - Some blocks are nearly full at ~4MB; others contain few transactions.

→ Explore blocks on robtex.com

FAQ

Why is block time variable?
Mining is probabilistic. The 10-minute target is an average. Individual blocks may take 1 minute or 60 minutes.
What happens during a halving?
The coinbase reward drops by half. Miners receive fewer new BTC per block. This occurs every 210,000 blocks until ~2140.
Can blocks be changed after mining?
Practically no. Changing a block requires re-mining it and all subsequent blocks, which becomes exponentially harder as blocks accumulate.
Why do some blocks have few transactions?
Miners choose which transactions to include. Empty or sparse blocks may result from fast successive blocks or miner strategy.