About block 921,643
Bitcoin block 921,643 was mined by SECPOOL on October 31, 2025 at 6:35 PM UTC, 4 min 52 s after block 921,642. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 2,718 transactions in 1.84 MB (99.9% of the 4 million weight-unit limit). The median transaction paid 2.00 sat/vB, up from 2.00 sat/vB in the block before, and all fees added up to 0.0242 BTC. With the 3.125 BTC subsidy of halving era 5, SECPOOL earned 3.1492 BTC for this block.
Block 921,643 is number 332 of 2,016 in difficulty epoch 457; 1,684 blocks remain until the next difficulty adjustment at block 923,327. The next halving is at block 1,050,000, 128,357 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. SECPOOL found 39 blocks in the week before. Today the block has 51,893 confirmations, so it is settled beyond any practical doubt.