About block 903,339
Bitcoin block 903,339 was mined by Foundry USA on June 30, 2025 at 3:13 AM UTC, 2 min 26 s after block 903,338. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 447 transactions in 0.28 MB (20.3% 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 0.0057 BTC. With the 3.125 BTC subsidy of halving era 5, Foundry USA earned 3.1307 BTC for this block.
Block 903,339 is number 172 of 2,016 in difficulty epoch 448; 1,844 blocks remain until the next difficulty adjustment at block 905,183. The next halving is at block 1,050,000, 146,661 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. Foundry USA found 244 blocks in the week before. Today the block has 72,246 confirmations, so it is settled beyond any practical doubt.