About block 903,166
Bitcoin block 903,166 was mined by Unknown on June 29, 2025 at 4:28 AM UTC, 6 min 44 s after block 903,165. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 1,158 transactions in 0.70 MB (36.6% of the 4 million weight-unit limit). The median transaction paid 0.00 sat/vB, down from 1.00 sat/vB in the block before, and all fees added up to 0.0109 BTC. With the 3.125 BTC subsidy of halving era 5, Unknown earned 3.1359 BTC for this block.
Block 903,166 is number 2,015 of 2,016 in difficulty epoch 447; 1 blocks remain until the next difficulty adjustment at block 903,167. The next halving is at block 1,050,000, 146,834 blocks after this one.
Its hash starts with 21 zeros: that is the proof of work, a number below the target that the whole network’s hashrate had to search for. Unknown found 2 blocks in the week before. Today the block has 72,438 confirmations, so it is settled beyond any practical doubt.