About block 917,257
Bitcoin block 917,257 was mined by ULTIMUSPOOL on October 1, 2025 at 4:59 PM UTC, 3 min 31 s after block 917,256. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 2,662 transactions in 1.74 MB (99.8% of the 4 million weight-unit limit). The median transaction paid 1.00 sat/vB, up from 1.00 sat/vB in the block before, and all fees added up to 0.0200 BTC. With the 3.125 BTC subsidy of halving era 5, ULTIMUSPOOL earned 3.1450 BTC for this block.
Block 917,257 is number 1,994 of 2,016 in difficulty epoch 454; 22 blocks remain until the next difficulty adjustment at block 917,279. The next halving is at block 1,050,000, 132,743 blocks after this one.
Its hash starts with 20 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 56,321 confirmations, so it is settled beyond any practical doubt.