About block 921,251
Bitcoin block 921,251 was mined by SpiderPool on October 28, 2025 at 10:52 PM UTC, 4 min 22 s after block 921,250. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 3,753 transactions in 1.63 MB (99.8% of the 4 million weight-unit limit). The median transaction paid 1.00 sat/vB, down from 2.00 sat/vB in the block before, and all fees added up to 0.0195 BTC. With the 3.125 BTC subsidy of halving era 5, SpiderPool earned 3.1445 BTC for this block.
Block 921,251 is number 1,956 of 2,016 in difficulty epoch 456; 60 blocks remain until the next difficulty adjustment at block 921,311. The next halving is at block 1,050,000, 128,749 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. SpiderPool found 45 blocks in the week before. Today the block has 52,285 confirmations, so it is settled beyond any practical doubt.