docs: public static ECPoint extractPublicKey(final ECPublicKey ecPublicKey) {
          final java.security.spec.ECPoint publicPointW = ecPublicKey.getW();
          final BigInteger xCoord = publicPointW.getAffineX();
          final BigInteger yCoord = publicPointW.getAffineY();
  
          return CURVE.getCurve().createPoint(xCoord, yCoord);
      }