About block 921,389
Bitcoin block 921,389 was mined by MARA Pool on October 30, 2025 at 12:57 AM UTC, 6 min 30 s after block 921,388. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 5,661 transactions in 1.62 MB (99.8% of the 4 million weight-unit limit). The median transaction paid 0.00 sat/vB, and all fees added up to 0.0079 BTC. With the 3.125 BTC subsidy of halving era 5, MARA Pool earned 3.1329 BTC for this block.
Block 921,389 is number 78 of 2,016 in difficulty epoch 457; 1,938 blocks remain until the next difficulty adjustment at block 923,327. The next halving is at block 1,050,000, 128,611 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. MARA Pool found 47 blocks in the week before. Today the block has 52,146 confirmations, so it is settled beyond any practical doubt.