About block 903,063
Bitcoin block 903,063 was mined by MARA Pool on June 28, 2025 at 9:39 AM UTC, 5 min 46 s after block 903,062. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 4,088 transactions in 1.79 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 0.0202 BTC. With the 3.125 BTC subsidy of halving era 5, MARA Pool earned 3.1452 BTC for this block.
Block 903,063 is number 1,912 of 2,016 in difficulty epoch 447; 104 blocks remain until the next difficulty adjustment at block 903,167. The next halving is at block 1,050,000, 146,937 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 58 blocks in the week before. Today the block has 72,550 confirmations, so it is settled beyond any practical doubt.