Indicator-Species Biodiversity (IPLC-first)

Overview

The Savimbo Indicator Species Biodiversity Methodology (ISBM) is a biodiversity crediting method developed by Savimbo, an Indigenous led company, to direct funding to Indigenous peoples and local communities conserving intact ecosystems. It relies on indicator species, verified through non-invasive monitoring such as game cameras, photographs, and audio recordings, as evidence that an ecosystem is functionally intact. A Voluntary Biodiversity Credit represents 30 days of one hectare of protected ecosystem, with a value set by the baseline ecosystem category and the indicator species integrity score.

Sources: methodology document · Savimbo

01 · Roles

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.

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.

{
  "$type": "org.broadlistening.policy.methodology",
  "code": "ISBM",
  "name": "Indicator-Species Biodiversity (IPLC-first)",
  "registry": "Savimbo (SAV)",
  "sector": "Biodiversity",
  "creditType": "biodiversity",
  "status": "active",
  "version": "1.0",
  "scopes": [
    "Biodiversity",
    "Indicator species",
    "IPLC",
    "Anti-offset"
  ],
  "aligns": [
    "BCA principles",
    "IAPB framework",
    "Kunming-Montreal GBF"
  ],
  "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/savimbo-bio-baseline",
    "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.broadlistening.policy.schema/savimbo-bio-monitoring"
  ],
  "graph": "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.broadlistening.policy.graph/savimbo",
  "issuesAs": "org.hypercerts.claim.activity",
  "workScope": "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.hypercerts.workscope.cel/savimbo-scope",
  "rights": "at://did:plc:bl0adl1sten1ngp0l1cyreg/org.hypercerts.claim.rights/savimbo-rights",
  "createdAt": "2025-01-01T00:00:00.000Z"
}

04 · Schemas

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