About block 909,121
Bitcoin block 909,121 was mined by Foundry USA on August 8, 2025 at 3:40 AM UTC, 8 min 28 s after block 909,120. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 3,297 transactions in 1.55 MB (99.8% of the 4 million weight-unit limit). The median transaction paid 1.00 sat/vB, down from 2.00 sat/vB in the block before, and all fees added up to 0.0212 BTC. With the 3.125 BTC subsidy of halving era 5, Foundry USA earned 3.1462 BTC for this block.
Block 909,121 is number 1,922 of 2,016 in difficulty epoch 450; 94 blocks remain until the next difficulty adjustment at block 909,215. The next halving is at block 1,050,000, 140,879 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 241 blocks in the week before. Today the block has 65,754 confirmations, so it is settled beyond any practical doubt.