About block 909,251
Bitcoin block 909,251 was mined by MARA Pool on August 9, 2025 at 5:09 AM UTC, 8 min 32 s after block 909,250. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 2,409 transactions in 1.58 MB (99.9% of the 4 million weight-unit limit). The median transaction paid 3.00 sat/vB, down from 5.00 sat/vB in the block before, and all fees added up to 0.0369 BTC. With the 3.125 BTC subsidy of halving era 5, MARA Pool earned 3.1619 BTC for this block.
Block 909,251 is number 36 of 2,016 in difficulty epoch 451; 1,980 blocks remain until the next difficulty adjustment at block 911,231. The next halving is at block 1,050,000, 140,749 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. MARA Pool found 53 blocks in the week before. Today the block has 65,616 confirmations, so it is settled beyond any practical doubt.