self-checks passed (h2c x3, B_ x2)

### Unblinding (C = C_ - r*K)
```shell
# Test 1
C_: 033b1a9737a40cc3fd9b6af4b723632b76a67a36782596304612a6c2bfb5197e6d
r:  99fce58439fc37412ab3468b73db0569322588f62fb3a49182d67e23d877824a
K:  0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798
C:  02b0485e086bfa35d31146657c7392ced53abc72e26fbc23c9dc867646cc410024

# Test 2
C_: 029bdf2d716ee366eddf599ba252786c1033f47e230248a4612a5670ab931f1763
r:  f78476ea7cc9ade20f9e05e58a804cf19533f03ea805ece5fee88c8e2874ba50
K:  0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798
C:  02b6bb3918a5e726eb49e3b45d0f63a7ae467bc54ae1e63754f06a95ae8aea14ca

# Test 3
C_: 0300dc47ab2a724507ec7e3d87d83d80fcb71bc850f11c6d01a325e34b83328517
r:  99fce58439fc37412ab3468b73db0569322588f62fb3a49182d67e23d877824a
K:  03142715675faf8da1ecc4d51e0b9e539fa0d52fdd96ed60dbe99adb15d6b05ad9
C:  02fe6fa7d0e5a66dff0c16f7ccf82d217467de25394aab8c493f3454a4bed3e179

# Test 4
C_: 03aa59b4ade8d0529984ddd6597830a2d7d70f6e806f72244c1c0e81504ff258a9
r:  f78476ea7cc9ade20f9e05e58a804cf19533f03ea805ece5fee88c8e2874ba50
K:  03142715675faf8da1ecc4d51e0b9e539fa0d52fdd96ed60dbe99adb15d6b05ad9
C:  03b5a8fbdefecb7f7f7ddac9b6d563e3a99081e224e2fe17e5c90bfafe16652e7c

```
### Verification (C == k*hash_to_curve(x))
```shell
# Test 1
k: 0000000000000000000000000000000000000000000000000000000000000001
x: d341ee4871f1f889041e63cf0d3823c713eea6aff01e80f1719f08f9e5be98f6
C: 02b0485e086bfa35d31146657c7392ced53abc72e26fbc23c9dc867646cc410024

# Test 2
k: 0000000000000000000000000000000000000000000000000000000000000001
x: f1aaf16c2239746f369572c0784d9dd3d032d952c2d992175873fb58fae31a60
C: 02b6bb3918a5e726eb49e3b45d0f63a7ae467bc54ae1e63754f06a95ae8aea14ca

# Test 3
k: 7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f
x: d341ee4871f1f889041e63cf0d3823c713eea6aff01e80f1719f08f9e5be98f6
C: 02fe6fa7d0e5a66dff0c16f7ccf82d217467de25394aab8c493f3454a4bed3e179

# Test 4
k: 7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f
x: f1aaf16c2239746f369572c0784d9dd3d032d952c2d992175873fb58fae31a60
C: 03b5a8fbdefecb7f7f7ddac9b6d563e3a99081e224e2fe17e5c90bfafe16652e7c

```