GS BiodivBiodiversityTesting · v1.0

Biodiversity Framework

Gold Standard's maturing biodiversity framework, borrowing its carbon third-party verification and registry infrastructure.

Registry
GS
Sector
Biodiversity
Credit
VBO · biodiversity unit
Issued as
org.hypercerts.claim.activity

The issued hypercert is a batch of VBO credits recorded at once, comparable to a registry issuance batch. It carries weighted contributors, a work scope and a rights record, so any app in the ATProto Collective Funding Ecosystem can read it natively.

ScopesBiodiversityNature-positive
Aligns toBCA principlesIAPB framework

Overview

The Biodiversity Framework, described by Gold Standard as its Biodiversity Impact Framework methodology, is under development to measure, manage, and report the biodiversity outcomes of conservation, restoration, and regeneration projects. It aims to set science based rules for quantifying biodiversity impacts so that projects, landscapes, and value chain interventions can make credible claims tied to global biodiversity goals. As of the sources reviewed the methodology has not been finalised, so the exact unit it will certify is not yet defined.

Sources: methodology document · Gold Standard

01 · Roles

Standard Registry

role · registry

Owns the policy, approves participants, anchors each issuance to its evidence.

Project Proponent

role · proponent

Registers the project and submits monitoring reports.

Validation & Verification Body

role · vvb

Independently validates the design and verifies monitored data.

02 · Policy graph

10 nodes

The workflow as an explicit directed graph. In Graph each column is one role, so you can see who acts at each step; every node names the org.broadlistening.policy.block.* def it resolves to plus its input and output record. Data flow switches to a lineage view that makes explicit what data each node needs and makes, with dependency arcs tracing every record back to the node that produced it, including where the Darwin Core occurrence + measurement records feed in. Hover to trace, click to inspect; revise edges (dashed) send work back.

Hover to trace · click to inspect

Standard Registry
Project Proponent
Validation & Verification Body
Issue hypercert

Issue biodiversity credits

Standard Registry

A hypercert batching the biodiversity credits issued for the period, anchored to the bundle.

Lexicon
org.broadlistening.policy.block.issue
Input
org.hypercerts.collection + the computed total
Output
org.hypercerts.claim.activity

Node kinds in this graph

  • Role selectorg.broadlistening.policy.block.roleSelect
  • Request documentorg.broadlistening.policy.block.requestDocument
  • Revieworg.broadlistening.policy.block.review
  • Persistorg.broadlistening.policy.block.persist
  • Computeorg.broadlistening.policy.block.compute
  • Aggregateorg.broadlistening.policy.block.aggregate
  • Issue hypercertorg.broadlistening.policy.block.issue
  • Provenanceorg.broadlistening.policy.block.provenance

control-flow event

revise (sends back)

03 · Generated lexicon records

The records this methodology compiles to, ready to write to a PDS. The first tabs are the new policy engine records; the ★ claim.activity tab and those after it are reused ATProto Collective Funding Ecosystem records (org.hypercerts.*): the issued hypercert batch, its rights, an example verification attachment and a retirement receipt. The ◈ dwc.occurrence and ◈ dwc.measurement tabs are the Darwin Core field evidence the monitoring node writes; see the section below.

org.broadlistening.policy.methodology/gs-biodiversity

{
  "$type": "org.broadlistening.policy.methodology",
  "code": "GS Biodiv",
  "name": "Biodiversity Framework",
  "registry": "Gold Standard (GS)",
  "sector": "Biodiversity",
  "creditType": "biodiversity",
  "status": "testing",
  "version": "1.0",
  "scopes": [
    "Biodiversity",
    "Nature-positive"
  ],
  "aligns": [
    "BCA principles",
    "IAPB framework"
  ],
  "roles": [
    {
      "id": "registry",
      "name": "Standard Registry",
      "permission": "Owns the policy, approves participants, anchors each issuance to its evidence."
    },
    {
      "id": "proponent",
      "name": "Project Proponent",
      "permission": "Registers the project and submits monitoring reports."
    },
    {
      "id": "vvb",
      "name": "Validation & Verification Body",
      "permission": "Independently validates the design and verifies monitored data."
    }
  ],
  "schemas": [
    "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.broadlistening.policy.schema/gs-biodiversity-bio-baseline",
    "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.broadlistening.policy.schema/gs-biodiversity-bio-monitoring"
  ],
  "graph": "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.broadlistening.policy.graph/gs-biodiversity",
  "issuesAs": "org.hypercerts.claim.activity",
  "workScope": "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.hypercerts.workscope.cel/gs-biodiversity-scope",
  "rights": "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.hypercerts.claim.rights/gs-biodiversity-rights",
  "createdAt": "2025-01-01T00:00:00.000Z"
}

04 · Schemas

Biodiversity Baseline

schema · bio-baseline

Baseline state of the metric basket before the intervention.

FieldTypeReqDescription
ecoregionstringOne of the world's terrestrial / marine ecoregions.
habitatstringHabitat type under the conservation objective.
areaHanumberProject area in hectares.
metricBasketarrayTaxa / indicators measured, the basket reflecting the objectives.
baselineMediannumberMedian baseline value across the basket.
methodstringSurvey method and sampling effort.

Biodiversity Monitoring

schema · bio-monitoring

Re-measurement of the metric basket for a monitoring period.

FieldTypeReqDescription
projectrefstrongRef to the registered baseline.
periodstringMonitoring period (ISO-8601 interval).
monitoredMediannumberMedian monitored value across the basket.
upliftPctnumberMedian % uplift (or avoided loss) vs baseline.

05 · Field evidence (Darwin Core)

A biodiversity credit is only as credible as the field-evidence timeline behind it. The baseline and monitoring nodes above don't just file a document: they write a species-occurrence timeline with GainForest's Darwin Core lexicons (app.gainforest.dwc.*). The verification node then audits those records, and the compute node reads them to quantify the unit.

The evidence record chain

Written atBaseline surveyMonitor upliftVerified atValidate designVerify uplift

Metrics & indicators the methodology requests

Indicator / metricHow the methodology requests itDarwin Core field(s)
Baseline biodiversity indicatorsScience-based rules for quantifying biodiversity impact (in development).
dwc.occurrence.scientificNamedwc.occurrence.conservationStatus
Habitat conditionCondition of conservation / restoration / regeneration areas.
dwc.measurement.floraMeasurement.canopyCoverPercentdwc.event.habitat
Outcome vs baselineCredible claims tied to global biodiversity goals.
dwc.occurrence.eventDatedwc.occurrence.individualCount

How the evidence becomes a credit

Framework still under development, with its unit yet to be finalised; the evidence timeline is built now to future-proof issuance.

Indicators sourced from the GS Biodiv methodology document; mapped onto the GainForest Darwin Core lexicons.

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