Trust Frameworks often allow for Trust Schemes to be created and accredited within them. Trust Schemes could be sector specific, territory specific or global-multinational. For example, sector-specific use cases, requiring a separate Trust Scheme, might be online age verification using zero knowledge proofs, anti-money-laundering checks, or air travel. These sector-specific schemes will often contain the actual implementation of local or global regulations specific to that sector. Schemes may further define, extend or omit optional elements of a trust framework to tailor the identity service to the needs of the specific implementation. For example, the Trust Scheme might define the ID Proofing requirements for a specific sector within the overarching requirement set by the Trust Framework.