About block 903,521
Bitcoin block 903,521 was mined by Mining Squared on July 1, 2025 at 11:36 AM UTC, 33 min 7 s after block 903,520. That is slower than the 10-minute target; long gaps are normal, since every hash attempt is an independent draw with the same tiny chance.
It confirmed 4,059 transactions in 1.64 MB (99.8% of the 4 million weight-unit limit). The median transaction paid 4.00 sat/vB, up from 2.00 sat/vB in the block before, and all fees added up to 0.0577 BTC. With the 3.125 BTC subsidy of halving era 5, Mining Squared earned 3.1827 BTC for this block.
Block 903,521 is number 354 of 2,016 in difficulty epoch 448; 1,662 blocks remain until the next difficulty adjustment at block 905,183. The next halving is at block 1,050,000, 146,479 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. Mining Squared found 0 blocks in the week before. Today the block has 72,052 confirmations, so it is settled beyond any practical doubt.