About block 903,915
Bitcoin block 903,915 was mined by MARA Pool on July 4, 2025 at 3:38 AM UTC, 7 min 10 s after block 903,914. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 4,213 transactions in 1.64 MB (99.8% 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 0.0165 BTC. With the 3.125 BTC subsidy of halving era 5, MARA Pool earned 3.1415 BTC for this block.
Block 903,915 is number 748 of 2,016 in difficulty epoch 448; 1,268 blocks remain until the next difficulty adjustment at block 905,183. The next halving is at block 1,050,000, 146,085 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 71,622 confirmations, so it is settled beyond any practical doubt.