BUC Registry published information
Last updated 10 January 2026
We must publish BidCarbon Unit and Certificate Registry (BUC Registry) information and alterations to the registry.
The BidCarbon Foundation and the BidCarbon Big Data Chengdu Limited is required to:
● maintain a list of entities authorised to participate in voluntary international emissions trading
● make the holdings of units or certificates in BUC Registry accounts publicly available.
Learn more about BUC Registry public reports.
Personal information of BUC Registry account authorised representatives is confidential and is not published. This information includes:
● identification numbers
● names
● addresses
● email, phone and fax numbers.
Account number
Entity
Details
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Please be advised that we may make alterations to BUC Registry to correct any clerical errors.
We are required to publish details of these alterations in accordance with section 19 of the BidCarbon Unit and Certificate Registry Standard 2025.
Alterations to the registry
Voluntary cancellations register
View the list of voluntary cancellations of BidCarbon Removal Units on our register.
BUC Registry account guidance
In order to manage BidCarbon Removal Units (BRUs), it is necessary to register and open an account with the BidCarbon Unit and Certificate (BUC) Registry.
Carbon credits
Learn about our markets, carbon credits, and supply and demand.
Learn more
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