Convert Bitcoin block hash data to ASCII format.
Example blocks:
- File insertion tool and file downloader for Bitcoin by Satoshi Nakamoto: 0000000000000147ed18d6690862dbf084712e39712801c47ee842531c906615
- "Mined by" signature with emoji: 000000000000000000a7b4999c723ed9f308425708577c76827ade51062e135a