About block 903,908
Bitcoin block 903,908 was mined by MARA Pool on July 4, 2025 at 2:51 AM UTC, 3 min 3 s after block 903,907. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 1,474 transactions in 1.27 MB (99.8% of the 4 million weight-unit limit). The median transaction paid 2.00 sat/vB, up from 2.00 sat/vB in the block before, and all fees added up to 0.0254 BTC. With the 3.125 BTC subsidy of halving era 5, MARA Pool earned 3.1504 BTC for this block.
Block 903,908 is number 741 of 2,016 in difficulty epoch 448; 1,275 blocks remain until the next difficulty adjustment at block 905,183. The next halving is at block 1,050,000, 146,092 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 54 blocks in the week before. Today the block has 71,629 confirmations, so it is settled beyond any practical doubt.