Bitcoin Block Explorer - Navigate the Blockchain

Latest Blocks (avg 8min41s between blocks)

BlockTransactionsTime
971,1673794
971,1663942
971,1657034
971,1645048
971,1636797
971,1625687
971,1615614
971,1606092
971,1595338
971,1585799
971,1573798
971,1566117
971,1556488
971,1544135
971,1534857
971,1523557
971,1515526
971,1505689
971,1495799
971,1485996
971,1474413
971,1464154
971,1454892
971,1444618

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.