About block 903,271
Bitcoin block 903,271 was mined by MARA Pool on June 29, 2025 at 7:43 PM UTC, 8 min 13 s after block 903,270. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 3,982 transactions in 1.70 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 0.0190 BTC. With the 3.125 BTC subsidy of halving era 5, MARA Pool earned 3.1440 BTC for this block.
Block 903,271 is number 104 of 2,016 in difficulty epoch 448; 1,912 blocks remain until the next difficulty adjustment at block 905,183. The next halving is at block 1,050,000, 146,729 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 60 blocks in the week before. Today the block has 72,321 confirmations, so it is settled beyond any practical doubt.