About block 917,139
Bitcoin block 917,139 was mined by SECPOOL on September 30, 2025 at 10:56 PM UTC, 3 min 33 s after block 917,138. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 3,899 transactions in 1.72 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 0.0086 BTC. With the 3.125 BTC subsidy of halving era 5, SECPOOL earned 3.1336 BTC for this block.
Block 917,139 is number 1,876 of 2,016 in difficulty epoch 454; 140 blocks remain until the next difficulty adjustment at block 917,279. The next halving is at block 1,050,000, 132,861 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 38 blocks in the week before. Today the block has 56,412 confirmations, so it is settled beyond any practical doubt.