About block 921,139
Bitcoin block 921,139 was mined by SECPOOL on October 28, 2025 at 6:50 AM UTC, 7 min 9 s after block 921,138. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 5,169 transactions in 1.63 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 0.0106 BTC. With the 3.125 BTC subsidy of halving era 5, SECPOOL earned 3.1356 BTC for this block.
Block 921,139 is number 1,844 of 2,016 in difficulty epoch 456; 172 blocks remain until the next difficulty adjustment at block 921,311. The next halving is at block 1,050,000, 128,861 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. SECPOOL found 39 blocks in the week before. Today the block has 52,396 confirmations, so it is settled beyond any practical doubt.