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Attestation routing

As DPO2U grows, the hard problem is not only generating attestations. It is deciding which attestation path should be used for a given relying party, jurisdiction, and trust threshold.

The routing problem​

A future DPO2U deployment may have multiple possible validation paths:

  • purely off-chain schema validation
  • local-node proof-backed validation
  • chain-recorded public attestations
  • jurisdiction-specific validators
  • higher-assurance or lower-latency modes

Routing is the policy that selects the right path for the request.

Dimensions that affect routing​

At minimum, routing depends on:

  1. jurisdiction — which legal interpretation is relevant
  2. assurance level — how much evidence or proof is required
  3. latency budget — how quickly the relying party needs a result
  4. privacy budget — how much disclosure is acceptable
  5. infrastructure availability — which execution paths are actually healthy

The last point matters today: public MCP availability is confirmed, and the gateway routes chain=midnight attestations on the Midnight preview network through its own driver (an asynchronous queue to a self-funding agent, gated by MIDNIGHT_CHAIN_ENABLED). A public Midnight RPC path is not a dependable route at this time. See Midnight.

Current practical routing rule​

Given the confirmed VPS state, the pragmatic routing rule is simple:

  • if the task is read-heavy or schema-centric, use the public MCP path
  • if the task requires end-to-end proof generation and settlement, route to the local Midnight node path
  • do not assume rpc.dpo2u.com as an available public dependency

Why routing is a research topic​

Routing becomes nontrivial when multiple attestors, chains, or regulatory mappings coexist. At that point the protocol needs formal criteria for selecting:

  • cheapest acceptable path
  • highest-assurance path
  • most private acceptable path
  • jurisdictionally valid path

This is where DPO2U can become more than a single attestation service: it can become a broker of verifiable compliance paths.