I would like to know. I tried 32 zeros (hex format), 256 zeros (binary format). Didn't work to log is. Invalid format they said :-/ We need someone who knows.
Discussion
We should ask #[3] about it
I haven't heard of that, but nsec is just a bech32 encoded (integer) number with checksum at the end. For instance nsec for the private key of 1 would be nsec1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqsmhltgl
Zero as a private key won't work cause it doesn't give you a valid point at the curve ie. a valid public key.