Which tokenized carbon credits exist, and how many tonnes are on chain?
4 carbon credit tokens in our data, together about 20 million tonnes of CO₂ in circulation: BCT 15,678,264 t, MCO2 2,789,331 t, NCT 1,536,344 t, CHAR 816 t. The quality differs by pool: BCT accepts older and cheaper credits, NCT only nature-based ones, CHAR biochar removals. Verra stopped new tokenization of its credits in 2022, which is why supply has hardly grown since.
A carbon credit token stands for one tonne of CO₂ avoided or removed, backed by a credit from a registry such as Verra that was retired or locked when the token was made. Pool tokens (Toucan’s BCT, NCT, CHAR) hold many such credits of a type; MCO2 is backed by credits from Amazon forest projects. The tonnes below are read from the token contracts, so they show what is in circulation, not how much has been retired for offsetting.
Figures from our live dataset · data as of 2026-10-16 · not investment advice
| Token | Issuer | Yield / return | Minimum | KYC to buy | Chain |
|---|---|---|---|---|---|
| BCT Toucan Base Carbon Tonne (BCT) — pool of tokenized Verra carbon credits | Toucan Protocol | Not stated by the source | — | Not stated | Polygon, Celo |
| MCO2 Moss Carbon Credit (MCO2) — tokenized Amazon REDD+ carbon credits | Moss (Moss.Earth, Brazil) | Not stated by the source | — | Not stated | Ethereum |
| NCT Toucan Nature Carbon Tonne (NCT) — pool of nature-based carbon credits | Toucan Protocol | Not stated by the source | — | Not stated | Polygon, Celo |
| CHAR Toucan Biochar (CHAR) — pool of biochar carbon removal credits | Toucan Protocol | Not stated by the source | — | Not stated | Base, Celo |
Side by side
| BCT | MCO2 | NCT | CHAR | |
|---|---|---|---|---|
| KYC to mint with the issuer | Not stated | Not stated | Not stated | Not stated |
| KYC to buy on a market | Not stated | Not stated | Not stated | Not stated |
| KYC to redeem | Not stated | Not stated | Not stated | Not stated |
| Assets under management | 15,678,264 tonnes (Polygon 15,677,735; Celo 529; read on chain 2026-10-18) | 2,789,331 tonnes (read on chain 2026-10-18) | 1,536,344 tonnes (Polygon 1,413,796; Celo 122,548; read on chain 2026-10-18) | 816 tonnes (Base 171; Celo 645; read on chain 2026-10-18) |
| Jurisdiction | Decentralized protocol | Brazil | Decentralized protocol | Decentralized protocol |
| How to buy | Through Toucan carbon bridge (Verra VCUs retired off-chain and tokenized) or the arranging banks | Through Moss or the arranging banks | Through Toucan carbon bridge or the arranging banks | Through Toucan (Puro.earth biochar removal certificates) or the arranging banks |
More questions
Can I offset my emissions with a carbon token?
Only if the token is retired — burned with a retirement certificate — not by holding it. Holding a token is owning a credit; offsetting means retiring it so nobody else can claim the same tonne.
Which of them can I buy without KYC?
None of them is stated as buyable without KYC.