About block 921,558
Bitcoin block 921,558 was mined by Foundry USA on October 31, 2025 at 2:55 AM UTC, 44 seconds after block 921,557. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 5,226 transactions in 1.73 MB (99.8% of the 4 million weight-unit limit). The median transaction paid 0.00 sat/vB, down from 2.00 sat/vB in the block before, and all fees added up to 0.0036 BTC. With the 3.125 BTC subsidy of halving era 5, Foundry USA earned 3.1286 BTC for this block.
Block 921,558 is number 247 of 2,016 in difficulty epoch 457; 1,769 blocks remain until the next difficulty adjustment at block 923,327. The next halving is at block 1,050,000, 128,442 blocks after this one.
Its hash starts with 21 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 51,968 confirmations, so it is settled beyond any practical doubt.