About block 903,803
Bitcoin block 903,803 was mined by MARA Pool on July 3, 2025 at 9:37 AM UTC, 1 min 39 s after block 903,802. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 633 transactions in 1.16 MB (99.8% of the 4 million weight-unit limit). The median transaction paid 1.00 sat/vB, up from 1.00 sat/vB in the block before, and all fees added up to 0.0140 BTC. With the 3.125 BTC subsidy of halving era 5, MARA Pool earned 3.1390 BTC for this block.
Block 903,803 is number 636 of 2,016 in difficulty epoch 448; 1,380 blocks remain until the next difficulty adjustment at block 905,183. The next halving is at block 1,050,000, 146,197 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 54 blocks in the week before. Today the block has 71,744 confirmations, so it is settled beyond any practical doubt.