About block 915,521
Bitcoin block 915,521 was mined by MARA Pool on September 20, 2025 at 2:41 AM UTC, 17 min 28 s after block 915,520. 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 2,366 transactions in 1.34 MB (92.0% of the 4 million weight-unit limit). The median transaction paid 2.00 sat/vB, up from 1.00 sat/vB in the block before, and all fees added up to 0.0209 BTC. With the 3.125 BTC subsidy of halving era 5, MARA Pool earned 3.1459 BTC for this block.
Block 915,521 is number 258 of 2,016 in difficulty epoch 454; 1,758 blocks remain until the next difficulty adjustment at block 917,279. The next halving is at block 1,050,000, 134,479 blocks after this one.
Its hash starts with 21 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 44 blocks in the week before. Today the block has 58,713 confirmations, so it is settled beyond any practical doubt.