About block 903,253
Bitcoin block 903,253 was mined by SpiderPool on June 29, 2025 at 4:25 PM UTC, 5 min 6 s after block 903,252. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 1,305 transactions in 0.50 MB (30.8% of the 4 million weight-unit limit). The median transaction paid 0.00 sat/vB, and all fees added up to 0.0077 BTC. With the 3.125 BTC subsidy of halving era 5, SpiderPool earned 3.1327 BTC for this block.
Block 903,253 is number 86 of 2,016 in difficulty epoch 448; 1,930 blocks remain until the next difficulty adjustment at block 905,183. The next halving is at block 1,050,000, 146,747 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. SpiderPool found 74 blocks in the week before. Today the block has 72,341 confirmations, so it is settled beyond any practical doubt.