Top 10 Bitcoin block hashes
The lowest block hashes ever mined, meaning the blocks with the most leading zero bits. Every header is fetched from the Bitcoin P2P network and verified back to the first block ever mined, so this ranking is checked rather than taken on trust. Click any hash to recompute it yourself from the exact 80 bytes that produced it.
Every block clears its target by some margin, and these cleared it by absurd margins. Reading each hash as if it were the target gives the difficulty that block actually met, and the hashrate the whole network would need to keep finding blocks that good every ten minutes.
For scale, the current difficulty of 127 T implies a network hashrate of about 913 EH/s.
Block 756,951 alone met a bar roughly 396,474× higher than that. One lucky hash, not sustained work.
963,473 headers indexed, up to height 963,472.