com.karasiq.nanoboard
Nanoboard captcha block
EdDSA public key
XORed seed
Encoded captcha image
UnsignedMessage = ReplyTo + Text + PowValue Signature = Sign(UnsignedMessage, PrivateKeyFromSeed(DecryptedSeed))
https://github.com/nanoboard/nanoboard/commit/ef747596802919c270d0de61bd9bcdf319c787f0
Nanoboard captcha utility
Nanoboard captcha block
EdDSA public key
XORed seed
Encoded captcha image
https://github.com/nanoboard/nanoboard/commit/ef747596802919c270d0de61bd9bcdf319c787f0