Bitcoin Block by Date

Bitcoin's Timechain

Bitcoin's blockchain is a continuous record of every transaction since January 3, 2009. Each block is timestamped and linked to the previous one, creating an immutable timeline. This tool lets you explore when any block was mined, or find what block number corresponds to any date in Bitcoin's history.

How Block Dating Works

Bitcoin targets one block every 10 minutes on average, which means approximately 144 blocks per day (6 per hour x 24 hours). However, the actual time varies based on mining difficulty adjustments.

For more accurate results, this calculator uses known milestone blocks (like halving events) as anchor points and interpolates between them, providing much better accuracy than a simple linear estimate.

Bitcoin Halving Schedule

Every 210,000 blocks (roughly every 4 years), the block reward is cut in half. This is called the "halving" and is a fundamental part of Bitcoin's monetary policy:

• Genesis (Block 0, Jan 2009): 50 BTC reward
• First Halving (Block 210,000, Nov 2012): 25 BTC reward
• Second Halving (Block 420,000, Jul 2016): 12.5 BTC reward
• Third Halving (Block 630,000, May 2020): 6.25 BTC reward
• Fourth Halving (Block 840,000, Apr 2024): 3.125 BTC reward

Notable Dates in Bitcoin History

• January 3, 2009: Genesis block mined by Satoshi Nakamoto
• January 12, 2009: First Bitcoin transaction, Satoshi sends 10 BTC to Hal Finney
• May 22, 2010: "Bitcoin Pizza Day", 10,000 BTC paid for two pizzas
• November 28, 2012: First halving, reward drops from 50 to 25 BTC
• July 9, 2016: Second halving, reward drops to 12.5 BTC
• May 11, 2020: Third halving, reward drops to 6.25 BTC
• April 20, 2024: Fourth halving, reward drops to 3.125 BTC

Frequently Asked Questions

What was the first Bitcoin block?

Block 0, called the "Genesis Block," was mined by Satoshi Nakamoto on January 3, 2009. It contains the famous message: "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks."

How many Bitcoin blocks per day?

On average, 144 blocks are mined per day. Bitcoin targets one block every 10 minutes (6 per hour x 24 hours = 144). The difficulty adjusts every 2,016 blocks to maintain this average.

How accurate is this calculator?

This calculator uses known milestone blocks as anchors for accuracy. For dates between halvings, it interpolates based on actual timestamps. Results are approximate: the exact block depends on actual mining times which vary.

When is the next Bitcoin halving?

The fifth halving will occur at block 1,050,000, expected around 2028. The block reward will drop from 3.125 BTC to 1.5625 BTC.

What is the current Bitcoin block height?

As of early 2026, Bitcoin is past block 880,000. Use this tool with today's date to get an approximate current block height, or check a block explorer for the exact current block.