Appendix A: Relationship to Reference Implementations
The standard defines the interface — implementations provide the capability.
This standard defines the discovery mechanism and document convention. How a service implements the legal infrastructure behind legal-context.json is not specified by this standard.
Integra Reference Implementation
Integra provides one reference implementation featuring:
- On-chain existence proofs and agreement records (IntegraExistence, IntegraRecord)
- Composable resolver contracts (dispute resolution, escrow, compliance, identity, returns)
- Server-side middleware for zero-latency integration with MPP and other protocols
- IPFS document preservation via Pinata
- EIP-712 typed data schemas for signed acceptance
- ADR (Alternative Dispute Resolution) backed by the American Arbitration Association
- MCP server exposing LCP tools, resources, and prompts (see MCP as Delivery Mechanism)
Relationship to the Standard
Other implementations are possible and encouraged. The standard defines the interface; implementations provide the capability. The api field in legal-context.json is the hook from the standard to any implementation.
For a detailed walkthrough of Integra's implementation architecture — including the contentHash vs IntegraRecord distinction, middleware patterns, and IPFS re-pinning — see the supplementary Reference Implementation page.