www.hestiya.com Closing the Carbon Quality Gap: A Buyer’s Guide to High-Integrity Carbon Credits
Introduction The voluntary carbon market (VCM) appears enticing from a distance, but upon entering, the experience feels like being lost in a maze. Thousands of projects, various registries, and standards, all with different rules, baselines, and methods of verification. According to a report by the CFA Institute & RPC, roughly two-thirds of all transactions in this space are conducted privately, thereby obscuring the full view of what is happening
A Transparency Gap that is Di cult to Ignore Often, buyers are working blind. The chart below tells the story. As most transactions are not transparent, it is di cult to verify quality or find price signals. Now, try to make some substantial buying decisions with confidence in the above condition. Project developers certainly know their business. They are confident in soil types, leakage risks, and socio- economic factors. Buyers? They will often receive a flashy summary or an old PDF report. As a CSIS expert explained, today the VCM is “divided and suffering from quality issues.” It is not that buyers are not motivated to buy, but they simply have limited visibility.(2,7) Envision making decisions about high-sensitivity purchases without a robust view of the subject matter. Project developers understand their work perfectly: soil, risks, and local effects. Buyers, on the other hand, often receive only glitzy reports or PDF summaries that may be outdated. CSIS advises the VCM is "fractured and plagued by problems around quality. Around 1/3 of credits failed on the ICVCM Core Carbon Principles; this is a trust issue, not just a befriended one.(2,3,4) Most sustainability teams likely cannot afford full-time on-staff scientists or auditors. What is needed is a new rulebook based on transparency, quality, and integrity. And this is where Hestiya fits in, bringing data-driven verification and standardised frameworks to fill the information void, enabling buyers to make decisions based on evidence/observations with confidence. 70 60 50 40 30 20 10 0 Voluntary Carbon Market: Transparency Gap Private Transactions Publicly Reported Transactions Percentage of Transactions
2. Why Integrity is the Missing Currency in the Carbon Market If transparency is the foundation, then integrity is the currency that is what gives the carbon market its actual worth. Without integrity, even a billion dollars' worth of credits might not amount to one ton of verified climate impact. So what is high integrity? In the simplest terms, high integrity means the carbon credit meets four conditions: measurable, verifiable, additional, and permanent. Measurable means that the carbon reduction or removal can be measured through acceptable science. "Verifiable" means that verification could be conducted by another party and can check these values. Additionally, it means these projects would not occur without carbon finance. Permanent means that carbon enforced will not leak back into the atmosphere in a handful of years. When the pillars of integrity crack, trust will collapse. Issues such as double-counting, insu cient baselines, and unverifiable reductions do not just cause accounting errors; they erode market integrity. Reuters recently published that about one-third of the credits assessed under ICVCM’s Core Carbon Principles failed integrity tests, and most failed because of a lack of additionality or evidence of poor permanence.(3) The pie chart indicates just how important the issue is. Only two-thirds of the credits reviewed were of quality enough to meet the threshold of the ICVCM.(3) This isn't just a technical problem; it's a signal to the market. Integrity is not just a moral position or scientific checkbox; it is what supports liquidity, pricing, and ongoing confidence in the carbon trading market. A portfolio of credits with questionable integrity might look good on paper but yield no real climate value. How Integrity Gaps Impact Market Trust Integrity Check: How Carbon Credits Fare Againts ICVCM standards Failed ICVCM Benchmark Passed ICVCM Benchmark 33% 67%
Frameworks like the ICVCM Core Carbon Principles and VCMI Claims Code of Practice are beginning to help introduce structure and consistency (4,5). Frameworks do not solve the problem alone. Buyers still need actionable visibility into the integrity of credits, verified data, an audit trail, and a comparative metric that allows integrity to be measured at scale. This is where platforms like Hestiya become a game- changer. Thus, enabling these principles to be translated into data and insights that reflect in real time, so buyers can invest towards an impact and not towards uncertainty.
3. Information Asymmetry: The Buyer’s Blind Spot Buyers may appear to be getting a fair shake, but they are still in the dark while project developers have the flashlights pointed at them. Developers are intimately aware of every aspect of their projects, including soil characteristics and community effects; however, buyers usually only have access to what is in PDF reports and secondhand accounts. Data lives across multiple registries, such as Verra, Gold Standard, ACR, and others, and new inroads, like Berkeley’s Voluntary Registry Offsets Database, are helpful, but reporting delays and varying formats are barriers to visibility. (8,9) The fragmentation hampers procurement to a snail's pace. Buyers have to sift through documents, run audits, and scrub the data that they have access to before they can act. By then, the opportunities are usually gone. As CSIS points out, the voluntary carbon market is deeply affected by information asymmetries that make it di cult for buyers to trust, price, or transact e ciently and, ultimately, di cult for the market to scale. (2,6) Overview of the Voluntary Carbon Markets Buy-side Sales-side Supply-side Industry groups Intermediaries & Marketplaces Developers Standards & Registries Supply-side integrity initiatives Buy-side integrity initiatives Industry groups bring together an organization of companies with common interest. In this case the Voluntary Carbon Markets Exchanges Provide trading infrastructure Rating providers Provide carbon rating based on project data and analysis Wider sustainability initiatives that touch on VCMs There is a myraid of other groups that also touch on the VCMs by driving demand for carbon credits and contributing to transparency in the market Enable credit transactions by hosting a marketplace and/or API services to directly bridge end-buyers to registered credits Source: Downey, Eadaoin. “The Voluntary Carbon Markets Ecosystem, Simplified.” Sylvera, 26 Apr. 2023. Develop projects with the sole purpose of removing or avoiding emissions, which in turn creates carbon credits Provide a set of independent methodologies to certify projects and issue credits, which are hosted and/or displayed in a registry These initiatives are formed & led by VCM participants & aim to bring visibility to the issue of carbon credit quality and raise standards across the market There are a number of groups that analyze the claims made by the carbon credit buyers & provide guidance through principle frameworks & endorse compliant standards
4. The Anatomy of High-Integrity Carbon Credits High-integrity credits are not some foreign concept; they are simply the result of four measurable facts applied consistently across projects. Buyers are not scared because there aren’t credits; they are scared because we live in a world of uneven and fragmented data. Methodologies, vintages, issuance history, and risk signals must be standardised to produce a credit that can be compared, thus allowing buyers to decide instead of gambling. Additionality A credit is only real climate action if the emissions reduction or removal would not have happened without the project. We prove additionality with strong counterfactuals: a clear baseline, a consistent, transparent financing stack, and demonstrable dependence of the activity on carbon financing. Weak or opaque baselines are the quickest way to over-credit a project’s estimated CO avoided or removed. 2 Permanence Permanence will ask: for how long will the CO ₂ be out of the atmosphere? Each project type has different reversal risks: natural-based sinks have wildfire risks, soils may respire carbon, and avoidance projects sometimes rely on long-term behaviour. Insurance mechanisms (buffer pools, long-term contracts) often allocate a portion of credits in deferred credits, and they typically link time horizons around the buyer's intended outcome or claim. Verification and Transparency Third-party, independent verification and open, machine- readable reporting are absolutely non-negotiable. Registries, audit trails, and detailed vintage/issuance records provide buyers with the ability to track a ton from the point of issuance to retirement (end-use). A verification only has value as it relates to the data it certifies. Audits must be coupled with accessible, normalized datasets. (8,9) Integrity can be quantified, if you have the right data. Standardising project descriptors (methodology name/version, vintage, issuance ledger, buffer/insurance status, and verified risk flags) enables like-for-like comparisons to be quick and defensible. In the end, the challenge in the market isn’t a scarcity of supply; it is a scarcity of comparability.
5. From Noise to Signal: How Buyers Can Identify Quality Traceability: Visualizing the Invisible Data Normalisation: Making Comparisons More Meaningful Verification Cadence: Seeing Beyond a Moment Co-Benefits: Measurable Impacts of the Unmeasured A trustworthy credit must be traceable from the moment of issuance until its retirement. Hestiya integrates data from Verra, Gold Standard, ART, and other registries into a collective project identity to create immediate visibility into vintage gaps and risk of double- counting.(8,9) Trying to make comparisons without standardised data (methodology, vintage of the credits, risk buffer) becomes perplexing. By normalising methodologies, vintages, and issuance data across registries, Hestiya allows for a like-for-like comparison. Its “Integrity Heuristics” engine utilises AI to calculate a signal-to-noise ratio for every project, alleviating anomalies and bringing genuine integrity credits to light. When viewed through a data-first perspective, it is thought that 60% of projects in the current VCM are failing to meet basic integrity standards. Buyers who understand this and use platforms like Hestiya to magnify the signal are moving from passive purchasing to active portfolio design, where every ton is defensible, traceable, and verifiably impactful. Integrity depends on the frequency of MRV of projects. Hestiya tracks verification cadence and lateness, flags either gaps in performance or outlier foreign verification cadence, and visually displays MRV cadence, an excellent signal of integrity for the buyer. Projects that restore biodiversity or add livelihood outcomes create even deeper impact. Hestiya’s AI scans text and appropriate satellites to identify and connect verifiable co-benefits to useful SDG indicators. Thus, transforming impact stories into measurable metrics.
6. Designing a High-Integrity Carbon Portfolio With respect to carbon strategy, leadership means more than offsetting emissions. It means creating a resilient pathway to true climate impact. Companies that understand that disregarding a transaction-based approach (“buy credits, tick the box”) are building strategic, diversified portfolios with the same sophistication as investment portfolios, aimed at resilience and transparency for long-term value. Blending Removal and Avoidance Credits A resilient portfolio starts with the right ratio. Avoidance credits: i.e., forest protection, methane capture, and preventing new emissions. Removal credits, e.g., reforestation, biochar, and direct air capture, actively take carbon out of the atmosphere. Early factors are blending them both: Using avoidance for the near term and gradually adding removal exposure as technology iterations improve. A 2024 analysis by Ceezer illustrates that this is now the strategy of leading buyers. This diversifying both action types spreads technical and market risk while weighing short-term reductions with long-term net-zero commitments.(12) Across Geographies, Vintages and Project Maturities Diversifying is not only a financial necessity, but it is also a climate strategy. Leading buyers are sourcing regionally and across various types of ecosystems to reduce exposure to local disruption. Buyers also layer credit vintages; they mix outcomes from established projects in the portfolio, generating credits today with investments in early-stage projects that will generate credits in the future. The value of diversifying credit vintages is a portfolio that has both credibility today and security of supply for tomorrow. As ClimatePartner points out, when you blend project maturities, you are no longer reacting to the market; you are anticipating the market.(12)
7. Prioritising Transparent MRV and Registry Presence Traceability Buyers who strive for performance are looking for transparent monitoring, reporting, and verification frameworks to support these interventions, including registries like Verra, Gold Standard, and Puro.earth.8,9 This is about traceability, being able to track where your credits come from and were verified and expired, and this will centre around reputation and regulations. Now, Sylvera has published their analysis that shows credibility of your MRV process is the new differentiator. It is a signal to stakeholders that your carbon strategy is evidence-based and not based on assumptions.(8,9) Practising “Integrity Diversification” ophisticated buyers have also begun integrity diversification, where they are spreading exposure over different standards, methods, and project types. Think of this in terms of a hedge against uncertainty. If those methodologies are questioned, the basis for the integrity of your portfolio is much wider: removals, nature-based methodology, engineered solutions, etc. This doesn’t just mitigate risks; it builds trust with auditors, investors, and the public, and it establishes your company as flexible and nimble in an ever-changing carbon environment Owning Verified Impact, Not Just Cheap Tons Creating a high-integrity carbon credit portfolio is not about finding the cheapest ton. It is about claiming a verified impact on the climate. Cheap credits can be tempting, but more often than not, they come with a hidden risk, i.e., weak additionality, problematic baseline definitions, or poor permanence. High-integrity projects, especially removals, embody measurable and defensible impact and directly assist corporations in their net-zero pathways. As Calyx Global highlights, the market rewards credibility: quality buyers today will be in a better place to meet the regulatory and stakeholder expectations of tomorrow.(12) Registry A Registry A Registry B Registry C Issurace Project 1 On time Late Missing Vissing Project 2 Project 3 Project 4 Removals Engineered Engineered Nature
Integrity-First Portfolio in Practice Each organisation’s mix will vary based on emissions profile, risk tolerance, and time horizon. The goal is not uniformity but its integrity. Portfolio Bucket Suggested Allocation Example Project Types Purpose/Strategic Role Avoidance Base 40% REDD+ forest protection, landfill methane capture, and renewable energy Low-cost early action + co-benefits (biodiversity, local livelihoods) Mixed Avoidance and Removal 35% Mangrove restoration, soil carbon, blue carbon Balanced impact and ecosystem restoration High-Durability Removal 15% Direct Air Capture, biochar, bio-oil storage Long-term carbon lock-in and technology exposure Forward Commitments 10% Pre-purchase of pipeline credits Hedge future scarcity and secure pricing The Role of Technology and Data Infrastructure For many years, carbon markets have suffered from information asymmetry, ranging from fragmented registries and inconsistent methodologies to limited access to project data. Because of this, buyers often have only limited visibility into the integrity of projects being purchased, as well as the pricing and co-benefits; it may be di cult to compare projects on a like-for-like basis or scale with confidence. However, in today's market, we are beginning to see digital carbon platforms emerge that are becoming the connective tissue of the market: aggregating data, standardizing formats, and giving buyers a clearer lens into the quality, risk, and impact of projects. Ÿ In Business: Aggregation and Normalisation Help Bring Order to Chaos Ÿ Platforms like Patch, Cloverly, and Carbonplace are doing heavy lifting behind the scenes. Ÿ Aggregating project data across a wide range of registries and standards, from Verra and Gold Standard to small regional systems. Ÿ Normalising methodologies so that a reforestation project in Kenya could be compared with a soil carbon project in Australia on consistent, agreed-upon metrics.(8,9,11,12)
The Function of Technological Advancements and Data Infrastructure Information asymmetry has crippled carbon markets for decades. There are fragmented registries, variable methodologies, and di culty accessing data regarding a particular project. Buyers are trying to make purchases without nearly full visibility into project integrity, pricing, and co-benefits, making it di cult to compare apples to apples, which makes it harder to scale with confidence. Several digital platforms are emerging as the connective tissue of the market, aggregating data, determining standard formats, and providing buyers with greater visibilityinto quality, risk, and impact. Aggregation and Normalisation: A Race to Order in the Chaos. Patch, Cloverly, and Carbonplace are doing the primary work of pulling project data together from registries and standards, such as Verra and Gold Standard, or maybe even smaller region-based ones. They are working diligently to normalise methodologies so that a reforestation project in Kenya can be compared to and vetted in the same way as a soil carbon project in Australia, using similar criteria. They provide valid and actionable signals like permanence scores, co-benefit indicators, and MRV transparency signals. This helps the buyer make rational decisions instead of instinctive decisions. With the help of artificial intelligence and automation, they continue to supplement this role by classifying data, flagging anomalies, and predictingrisks. But robust project credibility and certainty depend on human judgment. They are using AI to complement due diligence, not replace it. APIs and interoperability: advances in diligence By utilising API integrations and standards in data-sharing, these platforms are breaking down barriers between project developers, buyers, and registries. Patch's API infrastructure allows companies to seamlessly embed the transaction of carbon into procurement systems and ESG systems. Cloverly's marketplace connects buyers to verified suppliers in real-time with visibility to transaction attributes and pricing. Carbonplace, which is backed by major banks and the financial industry, is building a trusted settlement network that allows for secure, transparent, and auditable trades across institutions.(11,12)
8. Avoiding Common Buyer Pitfalls Purchasing Based on Brand, Rather than Data Many businesses continue to select projects on the basis of brand recognition or polished marketing standards rather than for the proven performance of the projects. A "renowned registry" does not always equal a high level of integrity. What's crucial is the additionality, permanence, and transparent monitoring, reporting, and verification. Verified, data-backed platforms, like Sylvera and Calyx Global, now provide independent ratings to help buyers distinguish between verifiable climate impact and reputational noise in the marketplace.(6,12) Not all verified credits are equivalent. Understanding true due diligence requires more than simply looking at the logo on the certificate. Over-dependence on Offsetting versus Real Emission Reductions Offsets are not an alternative to minimising your emissions. Leaders see offsets as a supplement to, and not the main focus of, a decarbonization strategy. Science-based approaches such as SBTi Corporate Net- Zero Standard set conditions for this approach, explaining that overdependence on climate offsets can be problematic. Companies should strive to reduce as many of their emissions as possible and reserve offsets only to address some of the remaining emissions that cannot currently be eliminated. "Offsets should be for the last 10%, and not the first step. Ignoring risk factors: Permanence, registry validity, and policy exposure One of the most underestimated pieces of carbon procurement is risk. Projects may fail to deliver at all or eventually reverse. Some registries may have methodological challenges or credibility security issues, and evolving policy (like the EU Carbon Removal Certification Framework) could reshape what counts as valid credit Sophisticated buyers mitigate this by: Ÿ Diversifying across geographies, standards, and methodologies. Ÿ Conducting third-party due diligence on project risk profiles. Ÿ Using forward contracts with verified delivery guarantees. ClimatePartner and Ceezer likewise advocate this balanced approach as one that sees carbon procurement as an asset management component, not just a one-time transaction.(12)
Treating Carbon Procurement as a PR Activity It is almost always a bad idea to purchase credits for the sake of a headline without considering the long-term implications. With a growing focus on “greenwashing,” many stakeholders are willing to call you out for vague or inflated statements. Reputable companies now back any public claim with data that can be verified, with documentation that is audit- ready, and with the support of a third party to account for the data. Today’s press release can become tomorrow’s headline risk, unless your data can hold up. Incidentally, the data that your climate portfolio was built upon should also be tracked over time so that you truly know whether you can count on the data as a trusted resource, and that requires regular diligence. Takeaway: Due Diligence is Now the Game Changer A credible climate portfolio is developed using the same (or higher) level of diligence and care as financial investing, of doing your fundamental analysis, diversifying, and then keeping track of your progress over time. Industry leaders will be distinguished by who has developed the strongest climate portfolio using data as a marketing tool. The difference between a credible climate strategy and a PR liability is often procurement diligence. Precision Over Perfection - Powered by Hestiya: Choosing high-integrity carbon credits isn’t about perfection’s about precision. The carbon market has matured from one built on instinct and opacity to one built on data, transparency, and accountability. And now, with tools like Hestiya, buyers know to act with confidence. Hestiya helps organisations move past distributed information and guesswork, helping bring clarity to procurement, consistency to data, and credibility to each purchase decision. By aggregating verified project intelligence, normalising methodologies, and revealing integrity signals, Hestiya transforms complexity into confidence. During this new age of climate accountability, companies aren't just buying tons of carbon—they'realso buyingtrust. Now that the market has the tools to make certainty possible, it's time to reach out to Hestiya, whose integrity and insight are at the core of the company. See how data, transparency, and expert insight can transform your next procurement cycle. → See Hestiya in Action. 9. Conclusion
References: 1. CFA Institute. Enhancing the Voluntary Carbon Market. 2025, rpc.cfainstitute.org/research/reports/2025/enhancing-the-voluntary-carbon- market. Accessed 17 Oct. 2025. 2. Dawes, Allegra, Cy McGeady, and Joseph Majkut. “Voluntary Carbon Markets: A Review of Global Initiatives and Evolving Models.” CSIS, 31 May 2023, www.csis.org/analysis/voluntary-carbon-markets-review-global-initiatives-and- evolving-models. Accessed 17 Oct. 2025. 3. Reuters. “Around a Third of Carbon Credits Fail New Benchmark Test.” Reuters, 6 Aug. 2024, https://www.reuters.com/sustainability/around-third-carbon-credits- fail-new-benchmark-test-2024-08-06/. 4. Integrity Council for the Voluntary Carbon Market. “The Core Carbon Principles.” ICVCM, https://icvcm.org/core-carbon-principles/ 5. Voluntary Carbon Market Integrity Initiative. VCMI Claims Code of Practice. VCMI, 30 Apr. 2025, https://vcmintegrity.org/wp-content/uploads/2025/04/VCMI-Claims- Code-of-Practice-April-2025-Version-3.0.pdf. 6. Downey, Eadaoin. “The Voluntary Carbon Markets Ecosystem, Simplified.” Sylvera, 26 Apr. 2023, https://www.sylvera.com/blog/voluntary-carbon-markets-ecosystem- explained. 7. Ecosystem Marketplace. State of the Voluntary Carbon Markets Report 2023. Ecosystem Marketplace, 2023, https://www.ecosystemmarketplace.com/publications/state-of-the-voluntary- carbon-market-report-2023/. 8. Verra. “Verra — Leading Climate Action & Carbon Standards.” Verra, https://verra.org/. 9. Gold Standard. “Impact Registry.” Gold Standard, 9 Dec. 2024, https://registry.goldstandard.org/. 10. Patch. “Why We’re Launching the All-New Patch Platform.” Patch Blog, 24 Apr. 2025, https://www.patch.io/blog/why-were-launching-the-all-new-patch-platform. 11. Carbonplace. “How It Works.” Carbonplace, https://carbonplace.com/how-it-works. 12. Calyx Global. “The State of Quality in the VCM 2024.” Calyx Global, 11 June 2024, https://calyxglobal.com/research-hub/research/the-state-of-quality-in-the-vcm- 2024. FAQs 1. What makes the voluntary carbon market (VCM) so di cult for buyers? The VCM is very fragmented, with thousands of projects across multiple registries and standards. Approximately two-thirds of the transactions are private, meaning buyers have little insight and not consistent data. 2. Why is transparency such an issue in buying carbon credits? Project developers have a deep-level understanding of their projects, but buyers generally are limited to old PDFs or summaries of projects. Most of this data is siloed into registries like Verra and Gold Standard, making it di cult for buyers to validate the quality of credits in real-time. 3. What does "high integrity" mean in carbon credits? Ÿ Measurable reductions that can be quantified and stated in a scientifically verifiable way. Ÿ Verifiable evidence that is independently assessed to verify carbon footprint reductions. Ÿ Additional projects would not occur in the absence of carbon finance. Ÿ Permanence: The carbon is removed on a long-term basis. 4. How does a lack of integrity affect market trust? According to the ICVCM, one-third of credits failed to meet integrity test measures. This does not serve the buyers who are hoping to invest and are only seeking climate impact that decreases buyer confidence, creates challenges in pricing, and detracts from climate impact thus converting a financial investment into an empty promise. 5. What is information asymmetry in the carbon market? Information asymmetry is the one-sided information or knowledge for project developers and buyers. Developers know detailed project information, but buyers' information is generally incomplete. This limits the buyer's ability to remain e cient in buying carbon credits, drives up risk for the buyer, and often slows down the procurement process.