Carbon Markets Hub
Landing page for biochar carbon removal (BCR) markets, methodologies, MRV, and risks. Synthesized from the carbon-credits research report, the Puro deep-dive cluster (2026-09-14), the Verra VM0044 + Isometric deep-dive clusters (2026-09-16), and the CSI Global Biochar C-Sink cluster (2026-09-16). Primary sources only—see Key Sources.
Folder layout: concepts at the top level; registry methods under Methodologies/; volumes and buyers under Market/. US NRCS practice guidance now lives under Policy Hub.
Live registries & indexes
| Resource | URL |
|---|---|
| CDR.fyi | https://www.cdr.fyi/ |
| Puro indexes (CORCCHAR / CORCX) | https://puro.earth/buy-carbon-credits/removal-certificate-corc/carbon-removal-indexes/ |
| Puro Registry | https://registry.puro.earth/ |
| Verra VM0044 v1.2 | https://verra.org/methodologies/vm0044-biochar-utilization-in-soil-and-non-soil-applications-v1-2/ |
| Isometric Biochar Protocol v1.3 | https://registry.isometric.com/protocol/biochar/1.3 |
| CSI docs | https://www.carbon-standards.com/ |
| ICVCM | https://www.icvcm.org/ |
Concepts
- Biochar as Durable CDR — removal pathway vs avoidance
- Permanence Science for Credits — how programs interpret H/C_org, Woolf, Ro
- MRV Stack — feedstock → pyrolysis → characterization → application
- Double Counting and Credit Ownership
- Risks and Controversies
Deep Puro cluster (preferred entry points)
Puro notes were expanded into standalone chapters (not stubs). Start here:
| Note | Role |
|---|---|
| Puro.earth Overview | What Puro is, CORCs, history, registry scale, ICVCM, link map |
| Puro CORC200+ | Durable-credit concept — CORC200+ permanence claim, labelling, transition |
| Puro Biochar Methodology Edition 2025 | Exhaustive Edition 2022→2025 method chapter |
| Puro Project Cycle and MRV | Listing → audit → issuance → retirement; US producer path |
| Puro Pricing and CORC Indexes | CORCCHAR / CORCX, fees, deals, buyers |
| Puro vs Other Standards | Comparison vs Verra / Isometric / CSI + chooser |
Deep Verra VM0044 cluster (2026-09-16)
| Note | Role |
|---|---|
| Verra VM0044 | Hub — version timeline, ICVCM CCP, link map |
| Verra VM0044 Methodology and Eligibility | Waste feedstock, greenfield, high/low-tech, end uses |
| Verra VM0044 Permanence and Quantification | 100y Table 3, H:Corg gate, equations |
| Verra VM0044 Project Cycle and MRV | VCS cycle, fees, CCP labeling |
| Verra Biochar Projects and Market | Reignite + market signals |
Deep Isometric cluster (2026-09-16)
| Note | Role |
|---|---|
| Isometric Biochar Protocol | Hub — modular architecture, net CDR equation |
| Isometric Permanence Pathways 200y and 1000y | Woolf 200y vs Ro 1000y |
| Isometric Project Cycle and MRV | PDD → ex-post issuance, CoC |
| Isometric Modules Soil Built Burial | Soil / burial / built modules |
Deep CSI / EBC C-Sink cluster (2026-09-16)
| Note | Role |
|---|---|
| CSI Global Biochar C-Sink | Hub — v3.3, prerequisite EBC/WBC, link map |
| CSI Overview | CSI org, registry, Artisan, CS-BCR, ICVCM |
| CSI GPC vs SPC Permanence Classes | GPC/SPC splits, Ro≥3.8% / HyPy≥90%, CINK_H |
| CSI MRV and Emission Portfolio | Emission portfolio, MoS, dMRV, applications |
| Product Standards EBC IBI | EBC/WBC product prerequisite (Policy) |
Cross-standard comparison
- Verra vs Isometric vs Puro — decision chooser (with Puro vs Other Standards for CSI)
Methodologies & standards (Methodologies/)
| Program | Note |
|---|---|
| Verra VM0044 v1.2 | See Deep Verra cluster above |
| Puro Biochar Edition 2025 / CORC200+ | See Deep Puro cluster above |
| Isometric Protocol v1.3 | See Deep Isometric cluster above |
| CSI Global Biochar C-Sink 3.3 | See Deep CSI cluster above |
Also relevant: IPCC inventory appendix (CDR Potential and IPCC Accounting), EU CRCF (Delegated Reg. 2026/285) · CSI CS-BCR draft, EBC/WBC product standards (Product Standards EBC IBI, Contaminants and Quality).
Market (Market/)
MOC: Market Hub
| Note | Role |
|---|---|
| Market Volumes and Pricing | Contracted vs delivered vs retired; BCR share; price trends |
| Buyers and Offtakes | Concentration, archetypes, notable offtakes (also Industry Hub) |
| Historical Deals | Timeline table with primary-source links |
| Price Indexes and Benchmarks | CORCCHAR / CORCX how-to-read; gaps |
| Supply Landscape | Public suppliers/projects (Exomad, Liferaft, Empacar, AMP, …) |
| Durable CDR Quality Tiers | Practical buyer quality framing |
| Puro Pricing and CORC Indexes | Deep Puro fees + indexes (Methodologies/) |
Policy (moved)
- NRCS soil carbon amendment in US ag — practice standard, not a credit methodology → Policy Hub
Cross-links
- Science: Permanence · Science Hub · Quantitative Benchmarks
- Production: Production · Properties · Production Hub
- Applications: Applications Hub · Soil and Agriculture · Materials and Built Uses
- Industry: Industry Hub
Primary links
- CDR.fyi
- Puro indexes
- Puro Registry
- Verra VM0044 v1.2
- Isometric Biochar v1.3
- CSI C-Sink 3.3 PDF
- CSI formulas & EFs
- Global C-Sink Registry
- ICVCM
- Key Sources