Public proof · IOEN dMRV · Biochar
Cagayan Valley Biochar 01
Sep 2026 verified
Net carbon removal (this period)
554.3 tCO₂
Location
Philippines
17.61, 121.73
Feedstock
napier_grass
charmaker_cpp2000
Puro project
PURO-PH-BIO-2026-001
MAT 25.5°C
Batches in period
26
Source records
Carbon accounting
| Gross CO₂ removal | 933.8 |
| − Process emissions (LCA) | −8.7 |
| = After process | 925.1 |
| − Buffer pool | −92.5 |
| = After buffer | 832.6 |
| Net CORCs (× permanence) | 554.3 |
Per-batch LCA breakdown not recorded for this period (batches ingested before LCA capture).
Independent verification
- Satellite land-use: confirmed
- NDVI (vegetation): 0.67
- Fire events in period: 1
Lab analysis (accredited)
- H:C molar ratio (mean): 0.439 — drives permanence
- PAH (max): 2.6 mg/kg
- Quality: pass (1 result)
Analysed by: Eurofins Biochar Lab (DAkkS, accredited to 2027-12-31)
Retired
100.0 tCO₂ of this report has been permanently retired:
- RET-2026-GB0001 — 100.0 tCO₂ for GreenBuy Co 2026 inset (by GreenBuy Co, 2026-10-17)
Certification
Puro.earth (eligible)
Third-party audit
Status: complete
A report is eligible for registry submission once audit is complete with no open flags.
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Integrity
SHA-256: 61887a36ca6a5a099659e801522318e5c383275e82b9086d9abf544712645ff6
Independently verify this report →
Tamper-evident hash stored off-chain (D1). On-chain anchoring + CORC tokenisation arrive in v2.
Audit annotations
- comment Verified LCA inputs against shipment manifests — consistent. (open)
- flag Sep satellite amber (fire event 8km outside boundary) — confirm false alarm. (resolved)