About block 917,121
Bitcoin block 917,121 was mined by Unknown on September 30, 2025 at 8:13 PM UTC, 1 min 18 s after block 917,120. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 6,738 transactions in 1.60 MB (99.8% of the 4 million weight-unit limit). The median transaction paid 0.00 sat/vB, and all fees added up to 0.0046 BTC. With the 3.125 BTC subsidy of halving era 5, Unknown earned 3.1296 BTC for this block.
Block 917,121 is number 1,858 of 2,016 in difficulty epoch 454; 158 blocks remain until the next difficulty adjustment at block 917,279. The next halving is at block 1,050,000, 132,879 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. Unknown found 13 blocks in the week before. Today the block has 56,422 confirmations, so it is settled beyond any practical doubt.