About block 921,166
Bitcoin block 921,166 was mined by Foundry USA on October 28, 2025 at 10:52 AM UTC, 6 seconds after block 921,165. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 4,724 transactions in 1.78 MB (99.8% 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 0.0022 BTC. With the 3.125 BTC subsidy of halving era 5, Foundry USA earned 3.1272 BTC for this block.
Block 921,166 is number 1,871 of 2,016 in difficulty epoch 456; 145 blocks remain until the next difficulty adjustment at block 921,311. The next halving is at block 1,050,000, 128,834 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 264 blocks in the week before. Today the block has 52,360 confirmations, so it is settled beyond any practical doubt.