About block 921,641
Bitcoin block 921,641 was mined by MARA Pool on October 31, 2025 at 6:29 PM UTC, 19 min 48 s after block 921,640. That is slower than the 10-minute target; long gaps are normal, since every hash attempt is an independent draw with the same tiny chance.
It confirmed 3,938 transactions in 1.53 MB (99.8% of the 4 million weight-unit limit). The median transaction paid 4.00 sat/vB, up from 2.00 sat/vB in the block before, and all fees added up to 0.0629 BTC. With the 3.125 BTC subsidy of halving era 5, MARA Pool earned 3.1879 BTC for this block.
Block 921,641 is number 330 of 2,016 in difficulty epoch 457; 1,686 blocks remain until the next difficulty adjustment at block 923,327. The next halving is at block 1,050,000, 128,359 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. MARA Pool found 47 blocks in the week before. Today the block has 51,902 confirmations, so it is settled beyond any practical doubt.