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History of the General Rules

Part of Puro.earth documents archive

  • Certification with external methodologies process.
  • Aligning with ISO/CCP terminology for design validation and performance verification.
  • Additional procedures to avoid double counting.
  • Aligning trading of CORCS with Article 6 of the Paris Agreement and CORSIA requirements.
  • Amending Registry requirements to include carbon removal year of production (vintage).
  • Clarifying use of the Platform Agreement.
  • Enhance additionality and leakage requirements.
  • Rules for reversal events and uncertainty assessment.
  • Requirements social safeguards: human rights, Indigenous People, labor rights, gender.
  • Requirements for positive Sustainable Development Goals (SDGs) impacts description.
  • Ongoing Issuance and Digital Monitoring, Reporting, and Verification.
  • Removed Chapter 3.4 Certificate Expiry as per resolution in Advisory Board on 31 May, 2023. CORCs no longer expire automatically after 5 years.
  • Chapter numbering from Ch 3.5 unchanged for reference.
  • CORC minimum durability set to 100 years
  • Annex C discontinued: CORC issuance on Bio-based Building
  • Materials methodology (storage durability of 50 years) ceased from January 2023.
  • Chapter 1.2.3 added: reference to normative documents
  • Chapter 2.1.4 added: reference to leakage
  • Chapter 4 revised: description of “transfer of ownership” of a CORC instructed with a trade report
  • Chapter 5 revised to allow publishing of Audit Reports and project description
  • Enhanced Rock Weathering added as a valid Methodology.
  • All Methodologies and templates published as separate documents in Puro.earth website. Annex A-H removed from this document
  • Annex B: Carbonated Building Material update from 2019 to 2022 to reflect the latest science
  • Chapter 1.3: Governance rules updated
  • Page numbers corrected in Table of Contents
  • Annex H: Woody Biomass Burial
  • Minor spelling mistakes corrected
  • Renaming of “Direct Purchase” to “Service Provider Trade” to align to Appendix 1 Terms and Conditions. 
  • 4.2 Clarification of conditions related to Service Provider Trade.
  • Annex A: Biochar chapter 4.2 - Spelling correction of 𝐶𝑜𝑟𝑔  
  • Terminology change: replace "cancel/retirement" with "retire/retirement" 
  • 5.1 Reporting: Added possibility for beneficiary to delay (embargo) the publishing of the retirement for maximum 12 months 
  • 2.1.2 Environmental and social safeguards 
  • 2.1.3 Additionality and Baseline 
  • Annex A: Biochar methodology update from 2019 to 2022 to reflect the latest science 
  • Chapter 1.3: Governance by Advisory Board
  • Chapter 3.8: Expiry extended
  • Chapter 5: Issuance and cancellation reports from the Registry 
  • Re-structuring: Separate chapters to describe rules for trading (Marketplace) and carbon removal crediting (Registry and Standard)
  • Annex G: Geologically stored Carbon methodology  
  • Chapter 3.1: Settlement is no longer tied to auctions
  • Chapter 3.4: Purchase through Certificate Listing Service enabled
  • Chapter 3.4: Pre-Purchase transactions enabled outside auctions
  • Chapter 3.4.3: Transfer Request added to Pre-purchase agreement process 
  • Chapter 4.3: Sale of CORCs enabled in external marketplaces
  • Annex A, 1.1.12: requirements for safe handling of biochar
  • Chapter 3.7 and 6.2: Extension of the expiry date by 6 months 
  • Chapter 3.5.6: Online shop closed for 3 hours before and after the auction 
  • Chapter 3.5: Possibility to select removal method in online shop 
  • Numbering of subparagraphs in Chapter 1.5. and Annex A,B,C 
  • Chapter 3.3: Certificate auctioning (changes from 48h blind to 96h half-blind)
  • Chapter 3.4: Pre-purchase of Certificates (changes due to action mechanism update)
  • Chapter 3.5 Certificate online purchase (added)
  • Chapter 6.2: CORCs issued in Experiment phase will expire normally 12 months after Issuance date. 
  • Chapter 3.2.4: CORCs may be issued for 18 months old production (previously 12 months)
  • Chapter 3.3: editorial changes 
  • Chapter 3.4: Pre-purchase of Certificates (CORCs)
  • Chapter 6.4: Aim to use CORC income for growth
  • Annex C. Wooden Building element methodology modified to incorporate also biomass-based insulation materials. 
  • Annex F. List of signatories included confidentially (not changed)
  • Initial version elaborated with List of Signatories and published on puro.earth website on the launch date of Puro CO2 removal marketplace.
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