A JSON-ed version of the test vectors is here: https://github.com/bitsofproof/supernode/blob/master/api/src/test/resources/BIP32.json

The Bits of Proof code matching with them is at:
https://github.com/bitsofproof/supernode/blob/master/api/src/main/java/com/bitsofproof/supernode/api/ExtendedKey.java

Tamas Blummer