About block 902,143
Bitcoin block 902,143 was mined by Foundry USA on June 21, 2025 at 5:43 AM UTC, 3 min 47 s after block 902,142. That is faster than the 10-minute average the network aims for: blocks come in bursts because finding one is pure chance.
It confirmed 1,651 transactions in 1.09 MB (61.2% of the 4 million weight-unit limit). The median transaction paid 1.00 sat/vB, down from 2.00 sat/vB in the block before, and all fees added up to 0.0107 BTC. With the 3.125 BTC subsidy of halving era 5, Foundry USA earned 3.1357 BTC for this block.
Block 902,143 is number 992 of 2,016 in difficulty epoch 447; 1,024 blocks remain until the next difficulty adjustment at block 903,167. The next halving is at block 1,050,000, 147,857 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. Foundry USA found 238 blocks in the week before. Today the block has 73,542 confirmations, so it is settled beyond any practical doubt.