Methodology Incorporation — The Linchpin

The NRD-lite incorporates the EC-M methodology by reference, with the version pinned at execution. This is the most important drafting decision in the document. It is what allows the methodology to evolve over the 99-year term without renegotiating the deed.

The drafting language

The deed says, in substance:

“The Verified Ecological Condition Right as defined herein is determined by reference to the Earth Credit Methodology version EC-M-1.1, dated April 2026, with content-address (hash): [SHA-256 hash of the methodology document]. Subsequent amendments to the methodology are incorporated only through ratification by the holder’s governance procedures, as documented in the holder’s operating agreement.”

Three drafting decisions matter:

1. Pin the version at execution

The deed names a specific methodology version. Future versions cannot be unilaterally substituted by Landseed. This means landowners do not get methodology surprises — a stronger guarantee than v1.2 offered (v1.2 effectively let the Grantee swap protocols at will).

2. Reference by hash, not URL

The methodology document is identified by content hash (SHA-256), not by URL. URLs change; hashes don’t. The hash uniquely identifies the methodology version regardless of where it is hosted.

3. DAO ratification governs updates

When a new methodology version is published, the DAO/LLC’s governance procedures determine whether to adopt it. This is the bridge between a static legal instrument and a living methodology. The deed defers to DAO governance; DAO governance ratifies new versions; the deed remains valid throughout.

Methodology archival commitment

If Landseed PBC dissolves, the methodology document referenced in every NRD-lite must remain accessible. Landseed PBC commits, in the deed and in the wrapper-entity operating documents, to maintaining methodology archives at three independent locations:

Archive	Purpose	Risk
Landseed’s own systems	Primary reference; maintained by the methodology stewards	Fails when Landseed fails
Third-party institutional archive (Software Heritage, Internet Archive, or successor)	Independent of Landseed’s continuity	Has uncertain long-term funding
IPFS or content-addressed storage successor	Decentralized; survives institutional failures	Has uncertain long-term protocol viability

Three archives are required because no single archival system has been demonstrated to survive 99 years. Belt-and-suspenders.

Paper-backup exhibit

Beyond digital archives, the NRD-lite includes a printed methodology summary as an exhibit. This is a 5–10 page human-readable synopsis attached to the deed at recording. Contents:

• The SEEA EA framework’s six dimensions (A1, A2, B1, B2, B3, C1)
• The high-level scoring formula (Penalized Geometric Mean of dimension scores; threat multiplier; conservative confidence-bound)
• The indicator categories (e.g., “biomass and productivity,” “water and nutrients,” “biodiversity composition”)
• A statement that the full methodology document is referenced by hash and is the authoritative source
• A statement that subsequent methodology versions are incorporated only through the DAO’s ratification procedures

This is not the full methodology (printing 1,500 lines of spec is impractical and over-specifies). It is enough that a future court 50 or 80 years from now, when no digital archive may exist, can ascertain what was being measured and how.

The printed exhibit is filed with the deed at the recording office. Recording offices preserve their records indefinitely, providing a paper-based archival redundancy against digital-archive failures.

How methodology updates work in practice

When Landseed publishes a new methodology version (e.g., EC-M-1.2 or EC-M-2.0):

1. Landseed publishes the new version with a 60-day public comment period
2. The new version’s hash and changelog are circulated to all live DAOs/LLCs
3. Each DAO/LLC’s governance procedures determine whether and when to ratify the new version
4. DAOs/LLCs that ratify update their methodology version pinning through governance action
5. DAOs/LLCs that do not ratify continue under the older version
6. The registry continues to issue credits under deprecated versions for a defined transition period (proposal: 24 months)

This means we may have a population of properties on different methodology versions at any given time. The methodology stewards must support multiple concurrent versions during transition periods.

What if a property declines to ratify?

A property’s DAO/LLC may decline to ratify a new methodology version for legitimate reasons:

• The new version reduces the property’s expected credit yield in ways stakeholders don’t accept
• The new version requires sensors or data sources the property doesn’t have
• The community (Template C) has not completed FPIC review of the new version

If a property remains on a deprecated version past the transition period:

• The registry stops issuing new credits under that version
• Outstanding credits remain valid (they were issued under valid methodology at issuance time)
• The property can be re-included by ratifying any later methodology version
• The DAO/LLC continues to operate; only credit issuance is paused

This is not catastrophic. Stewardship continues; revenue from prior credits continues; future revenue depends on ratification.

Reference value updates within a version

A subtle but important issue: EC-M-1.1 includes 286 reference values defining “healthy” for each ecosystem. Some of these will change over the 99-year term as scientific understanding evolves.

The architecture’s position: reference value updates within a methodology version trigger a sub-version increment (EC-M-1.1.1, EC-M-1.1.2, etc.). Sub-version updates require DAO ratification just like major version updates. This means landowners are not subject to involuntary methodology changes that would alter their credit yield.

The methodology layer must implement this versioning discipline. See 06-risks/open-questions.md Q-methodology-1 for the open-question status.

Cross-references in the deed

The deed cross-references several pieces of information through methodology incorporation:

• What is being measured: defined by the methodology version
• How it is being measured: defined by the methodology version
• What “verified ecological condition” means: defined by the methodology version
• What constitutes “destruction” of underlying condition (transfer covenants, element 6): defined by the methodology’s catastrophic-loss definitions

Each of these references the same hash-pinned methodology document. The deed itself stays short by deferring substance to the methodology.

What “incorporation by reference” requires

For a court to enforce a deed that incorporates an external document by reference, the external document must be:

• Specifically identified (the hash satisfies this)
• Reasonably accessible (the three-archive commitment + paper-backup satisfies this)
• Stable in content (hashing ensures the version is unchanged from execution)

Incorporation by reference is well-established legal practice; it is how zoning ordinances reference comprehensive plans, how franchise agreements reference operations manuals, how technology licenses reference patent specifications. The mechanism is sound.

Risks at this layer

Risk	What it would mean	Mitigation
Hash collision (cryptographic failure)	Two different methodology documents have the same hash	SHA-256 collision is computationally infeasible; use a stronger hash if SHA-256 is broken in the future
All three archives fail	The hash-pinned methodology cannot be retrieved	Paper-backup exhibit provides a court-readable substitute
Methodology language ambiguity	The methodology itself is unclear about what it means	Methodology stewards’ responsibility, not the deed’s; methodology peer review must catch this before publication
Reference value shift not version-tracked	Properties experience involuntary methodology change	Methodology stewards must implement sub-versioning; this is in 06-risks/ as an open methodology-layer question
Court cannot interpret the methodology	Future court is unfamiliar with SEEA EA framework	Paper-backup exhibit provides framework introduction; expert testimony fills gaps

What this means for drafting

The methodology-incorporation language is the most important paragraph in the deed. Every NRD-lite must:

• Reference the methodology by version and content hash
• Defer methodology updates to DAO governance
• Include the paper-backup exhibit
• Commit to the three-archive maintenance

Per-jurisdiction templates in 03-jurisdictions/property-jurisdictions/ will adapt the language but not the substance of these requirements.