The "blind ECDSA" in that article is not an ECDSA signature at all. It's a blind schnorr signature. The article does not mention that the construction there (a

The "blind ECDSA" in that article is not an ECDSA signature at all. It's a blind schnorr signature. The article does not mention that the construction there (and ones like it) are vulnerable to a one-more-signature attack if parallel queries are possible-- which is easily a fatal vulnerability in the headline digital cash application for blind signatures.