> For the complete documentation index, see [llms.txt](https://docs.toucan.earth/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.toucan.earth/resources/frequently-asked-questions/how-can-one-pool-token-represent-one-tonne-of-carbon-and-how-does-the-bridge-work.md). # How can one carbon pool token, like CHAR, represent one tonne of carbon? When they're tokenized, carbon credits are represented as TCO2 tokens. When a TCO2 token is deposited in a carbon pool, it is locked, and a corresponding carbon pool token, like CHAR, is created. Every carbon pool token in circulation is backed by a TCO2 token. This can be verified by looking at a third party website like a block scanner and inspecting the contents of the pool, or by auditing the contents using a function like [`fetchPoolContents`](/developers/sdk/subgraph-interactions.md#fetchpoolcontents). --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.toucan.earth/resources/frequently-asked-questions/how-can-one-pool-token-represent-one-tonne-of-carbon-and-how-does-the-bridge-work.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.