About block 901,635
Bitcoin block 901,635 was mined by ULTIMUSPOOL on June 17, 2025 at 1:52 PM UTC, 4 min 28 s after block 901,634. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 3,872 transactions in 1.53 MB (99.8% of the 4 million weight-unit limit). The median transaction paid 4.00 sat/vB, down from 5.00 sat/vB in the block before, and all fees added up to 0.0393 BTC. With the 3.125 BTC subsidy of halving era 5, ULTIMUSPOOL earned 3.1643 BTC for this block.
Block 901,635 is number 484 of 2,016 in difficulty epoch 447; 1,532 blocks remain until the next difficulty adjustment at block 903,167. The next halving is at block 1,050,000, 148,365 blocks after this one.
Its hash starts with 19 zeros: that is the proof of work, a number below the target that the whole network’s hashrate had to search for. ULTIMUSPOOL found 0 blocks in the week before. Today the block has 74,087 confirmations, so it is settled beyond any practical doubt.