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For developers and buyers · Context passport

Why this cubic metre matters here.

A cubic metre saved where a service is failing is not the same act as one saved elsewhere. The passport records the difference, without changing the volume.The basin context, recorded beside the volume.

Request a context passportSee the method
A basin seen from above, its river and contour lines, a pin on the river and the passport card hung from it

02A module, not a formula

A module that computes nothing.

Blueprints compute the volume; the MT-CTX module describes its context. Both are attached to the same registry record and never mix.The volume on one side, the context on the other.

  1. The volume Computed by the protocol's blueprints.Computed by the protocol.
  2. The context Described by the MT-CTX module, which computes nothing.Described, never computed.
  3. A firewall Context never enters the volume calculation.Never in the calculation.
Two lanes kept apart by a dashed firewall, the volume above and the context below, meeting only on the registry record

03Four strata

Ten dimensions, in four strata.

The first three follow the chain of the European DESSIN framework: the state of the environment, the services it provides, the users who depend on them. The fourth describes delivery. Each dimension keeps its own unit.Ten dimensions, each with its own unit.

  1. State of the environment Water stress, water quality, ecological condition.Stress, quality, ecology.
  2. Services provided Ecosystem services present or impaired, and when the impairment holds.Impaired services, and when.
  3. Dependent users User classes, absence of a substitute supply.Who depends, with no alternative.
  4. Delivery Infrastructure condition, energy dependency, abstraction regime.Networks, energy, abstraction.

04Public sources

Every dimension has its public source.

Aqueduct and AWARE, WQBA, BioBA, the EPA FEGS classification. Every dimension carries five provenance fields, on a declared frame.Five provenance fields per dimension.

  1. Source and vintage The cited method, and the year of the data.Method and year.
  2. Resolution The source's or coarser, never refined.Never refined.
  3. Uncertainty and evidence tier As published; never invented.As published.
  4. No source? The dimension is declared omitted, with its reason. Never estimated.Omitted, never estimated.
One dimension's card, five provenance rows, and a sixth dashed row for a dimension omitted

05Recorded, never scored

A profile, not a score.

Dimensions are never combined. That is what keeps context out of the number.Never combined, never scored.

  1. No score, no ranking No weighting between incommensurable dimensions.No weighting.
  2. No counts, no monetary value User classes, never headcounts; no price on context.No headcounts, no euros.
  3. No “other factors” A new dimension is added by amendment, not by intuition.Added by amendment only.
Ten independent bars, and beside them one dashed bar, crossed out: the refused score

06What it is for

Three uses, and one ban.

Prices can reflect context; volumes stay comparable. The T1 to T5 stress tier of the fee simulator and the price index comes from this passport.Prices follow context, volumes do not.

  1. Descriptor Attached to the certificate, public and auditable.Attached to the certificate.
  2. Eligibility condition Whether to issue, never how much.Whether to issue, never how much.
  3. Scarcity footprint Published beside the volume (ISO 14046), never in its place.Beside the volume, never in its place.
  4. Banned Multiplying, discounting or adjusting the certified volume.Never a multiplier.
See the price indexSimulate a price

07Get started

Add context to your project or portfolio.

Developers: show why your project matters where it is. Buyers: compare projects on what matters for your basins.Show why your project matters where it is.

Request a context passport

+Questions

Does context change the certified volume?

Never. One cubic metre is one cubic metre; context is recorded beside it.

Is it a score?

No. It is a profile: the dimensions are never added, weighted or ranked.

Is the passport computed by a blueprint?

No. The MT-CTX module computes nothing and instantiates no blueprint. Only an optional disclosure blueprint, BP-WSF, can publish a scarcity footprint beside the volume, never in its place.

How many dimensions?

Ten, in four strata: state of the environment, services, dependent users and delivery conditions.

Where does the information come from?

From public, citable methods such as WRI Aqueduct, AWARE, WQBA, BioBA and the EPA FEGS classification. Each dimension states its source, vintage, resolution, uncertainty and evidence tier.

What if data is missing?

The dimension is declared omitted, with its reason. It is never estimated.

Can context influence the price?

Yes. Prices can reflect context, while volumes stay comparable.