About block 909,643
Bitcoin block 909,643 was mined by MARA Pool on August 12, 2025 at 2:15 AM UTC, 2 min 2 s after block 909,642. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 513 transactions in 0.34 MB (22.2% 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 0.0052 BTC. With the 3.125 BTC subsidy of halving era 5, MARA Pool earned 3.1302 BTC for this block.
Block 909,643 is number 428 of 2,016 in difficulty epoch 451; 1,588 blocks remain until the next difficulty adjustment at block 911,231. The next halving is at block 1,050,000, 140,357 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 53 blocks in the week before. Today the block has 65,144 confirmations, so it is settled beyond any practical doubt.