Design principle DP6: Role-based privileges
The issuer, second opinion provider, and investor are identified as different roles with different privilege rights, such as access and editing rights and building and approving blocks.
Source paper
This design principle is proposed by Design Principles for Blockchain-based Applications in Green Bond Reporting (Ameera Darwish, Juho Lindman, Jesper Hjertqvist, Olgerta Tona, 2023).