Duplicate License Terms allowed on Registering Derivative IP

[jdubpark]

Expected Behavior

Can only link to parents using unique License Terms. If the user mints two or more License Tokens of the same License Terms from the same parent, and attempts to link to that parent using all of the License Tokens, it should revert.

Actual Behavior

Linking to a parent with two or more of the same License Tokens (different IDs, since mint amount > 1) is permitted.

1. Mint two or more license tokens of the same terms (e.g. Non-Commercial Social Remix) from a parent
2. Use all the license tokens from (1) to link a single IP to the parent from (1).

Example

• IPA 1 is root
• IPA 2 is child of IPA 1
• IPA 3 is child of IPA 2
• All licenses used are commercial with 10% royalty

Below results are produced

Case 1: If IPA 2 is linked to IPA 1 using one license (and the same between IPA 2 and 3), then

• IPA 1 has 10% over IPA 2
• IPA 1 has 20% over IPA 3
• IPA 2 has 10% over IPA 3

Case 2 (bug): If IPA 2 is linked to IPA 1 using two same licenses (and IPA 3 is linked to IPA 2 using one license), then

• IPA 1 has 20% over IPA 2
• IPA 1 has 30% over IPA 3
• IPA 2 has 10% over IPA 3