Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
The bitcoin-explorer command bx fetch-header -t 1 fetches the first Bitcoin block and shows the block header.
If I check the "first" block header, where does "previous block hash" come from?
bx fetch-header -t 1
Found the solution, the command for the genesis block should be:
bx fetch-header -t 0
Required, but never shown