About block 917,639
Bitcoin block 917,639 was mined by SECPOOL on October 4, 2025 at 4:50 PM UTC, 5 min 39 s after block 917,638. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 4,012 transactions in 1.65 MB (99.8% of the 4 million weight-unit limit). The median transaction paid 3.00 sat/vB, down from 5.00 sat/vB in the block before, and all fees added up to 0.0377 BTC. With the 3.125 BTC subsidy of halving era 5, SECPOOL earned 3.1627 BTC for this block.
Block 917,639 is number 360 of 2,016 in difficulty epoch 455; 1,656 blocks remain until the next difficulty adjustment at block 919,295. The next halving is at block 1,050,000, 132,361 blocks after this one.
Its hash starts with 20 zeros: that is the proof of work, a number below the target that the whole network’s hashrate had to search for. SECPOOL found 41 blocks in the week before. Today the block has 55,950 confirmations, so it is settled beyond any practical doubt.