About block 921,133
Bitcoin block 921,133 was mined by MARA Pool on October 28, 2025 at 6:17 AM UTC, 2 min 46 s after block 921,132. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 416 transactions in 0.47 MB (29.5% of the 4 million weight-unit limit). The median transaction paid 0.00 sat/vB, down from 1.00 sat/vB in the block before, and all fees added up to 0.0095 BTC. With the 3.125 BTC subsidy of halving era 5, MARA Pool earned 3.1345 BTC for this block.
Block 921,133 is number 1,838 of 2,016 in difficulty epoch 456; 178 blocks remain until the next difficulty adjustment at block 921,311. The next halving is at block 1,050,000, 128,867 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. MARA Pool found 47 blocks in the week before. Today the block has 52,410 confirmations, so it is settled beyond any practical doubt.