Follow, star, and react 
V2 supports three social primitives:
FOLLOWviaLINK_ADDandLINK_REMOVESTARviaLINK_ADDandLINK_REMOVELIKEviaREACTION_ADDandREACTION_REMOVE
Target model
- follow targets use
target_owner_address - star targets use
target_project_id - reaction targets use
target_project_idandtarget_commit_hash
V2 semantics
- links and reactions remain 2P sets
- reverse indexes are still maintained
FOLLOWaccepts any valid 20-byte target addressSTARandLIKEstill require valid project and commit targets where applicable
Follow an account
Star a project
Like a commit
Learn more
Next steps
- Fork a project — build on an existing project lineage
- Verify your identity — link an external address to the same owner address