About block 903,307
Bitcoin block 903,307 was mined by Foundry USA on June 29, 2025 at 11:29 PM UTC, 3 min 49 s after block 903,306. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 820 transactions in 0.48 MB (31.4% 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 0.0069 BTC. With the 3.125 BTC subsidy of halving era 5, Foundry USA earned 3.1319 BTC for this block.
Block 903,307 is number 140 of 2,016 in difficulty epoch 448; 1,876 blocks remain until the next difficulty adjustment at block 905,183. The next halving is at block 1,050,000, 146,693 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 245 blocks in the week before. Today the block has 72,282 confirmations, so it is settled beyond any practical doubt.