OTC Trading Board · Launching Q3 2026
Trade credits.
Directly.
The OTC secondary market for premium carbon credits. Sellers list what they hold. Buyers find exactly what they need — by type, vintage, and price. Every listing tied to a registry serial number.
How it works
Two sides. One platform.
List your credits
Hold premium credits you want to sell instead of retire? List them on the board. Set your price, show your vintage and registry ID, let verified buyers find you.
Submit your listing
Credit type, vintage, volume, listed price per tonne, registry serial number.
ClimSen verifies
We cross-check your serial number against the registry. No unverified listings published.
Buyers find you
Your listing goes live. Interested buyers send a request. You negotiate terms directly.
Source what you need
Need a specific credit type, vintage, or volume? Browse verified seller listings. See their listed price, contact them directly, negotiate on volume.
Filter by specifics
Credit type, vintage year, region, methodology, minimum volume, and price range.
Review provenance
See registry ID, seller verification status, and full credit history before engaging.
Request to negotiate
Send a request. Seller responds with terms. ClimSen facilitates the transaction and transfer.
Preview
The board, as it will look
Dense by design — every listing tied to a registry serial number.
| Ticker | Type | Vintage | Registry ID | Volume (t) | Listed $/t | Δ 24h | Status |
|---|---|---|---|---|---|---|---|
| BIO-23 | Biochar | 2023 | GS-BIO-23-DK-0041 | 50,000 | 28.50 | +2.1% | Verified |
| DAC-24 | Direct Air Capture | 2024 | VCS-DAC-24-IS-0007 | 12,500 | 185.00 | 0.0% | Verified |
| COR-22 | CORSIA | 2022 | CORSIA-22-BR-0112 | 200,000 | 14.20 | -0.8% | Verified |
| BCB-23 | Blue Carbon | 2023 | VCS-BCB-23-ID-0029 | 35,000 | 45.00 | +3.4% | Verified |
| ARR-24 | Reforestation | 2024 | VCS-ARR-24-KE-0083 | 80,000 | 22.40 | +1.7% | Verified |
| MNG-23 | Mangroves | 2023 | VCS-MNG-23-VN-0015 | 28,000 | 38.00 | +2.8% | Verified |
| RDD-21 | REDD+ | 2021 | VCS-RDD-21-CD-0204 | 150,000 | 8.50 | -1.2% | Verified |
| IWC-23 | Cookstoves | 2023 | GS-IWC-23-UG-0067 | 95,000 | 6.40 | 0.0% | Verified |
Register your interest
Tell us who you are. We’ll reach out when the trading board opens — buyers get first access to listings, sellers get early onboarding.
ClimSen OTC Board · Q3 2026 · Registry-verified only · No ghost credits