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The Sustainable Bitcoin Standard (SBS) was described in 2022 as a protocol for verifying that miners used renewable and clean energy, then issuing Sustainable Bitcoin Certificates (SBCs) associated with bitcoin mined under those conditions. The certificates were intended to carry a protocol-specific “Proof of Sustainable Mining” to investors—not to establish that Bitcoin as a whole is sustainable.
How the Sustainable Bitcoin Standard was described
In an April 28, 2022 announcement, CleanSpark said SBS worked with renewable-energy nonprofits and standards bodies focused on renewable energy and energy audits. The announcement described SBCs as certificates associated with each bitcoin a participating miner sustainably mined. It presented them as transferable proof that could reach investors without changing bitcoin’s fungibility.
Bradford van Voorhees, an SBS co-founder, described the aim as transferring “Proof of Sustainable Mining” between renewable-energy miners and investors without disrupting Bitcoin’s fungibility. That quote expresses the founders’ intent; it is not independent confirmation that certificate transferability or environmental claims were validated. CleanSpark’s April 2022 announcement is the source for the stated model.
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An SBC should be understood as a claim tied to the protocol’s definition of qualifying mining, not as a universal environmental rating for bitcoin. The 2022 announcement does not specify an energy threshold, geographic boundary, measurement period, detailed verification method, or what evidence accompanies an individual certificate. Without those details, a reader cannot use the announcement alone to assess how a particular certificate was verified or compare its rigor with another scheme.
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- It can represent: the protocol’s claim that a bitcoin was mined under the qualifying conditions described by SBS.
- It does not by itself establish: the lifecycle impact of all Bitcoin, the network’s total emissions, or a net benefit to the electricity grid.
SBS and the later Sustainable Bitcoin Protocol name
The initiative’s official news archive now uses the name Sustainable Bitcoin Protocol (SBP). Its archive lists a January 5, 2026 announcement about a partnership with Wincent for climate-aligned treasury solutions for miners. This shows recent public activity under the SBP name, but the archive entry does not establish current SBC issuance or present-day verification criteria. The available official materials also do not establish the full naming or corporate history connecting SBS and SBP. See the Sustainable Bitcoin Protocol news archive.
CleanSpark’s 2022 announcement named CleanSpark, BitDeer, and Luxxfolio (formerly Westblock) as mining partners at that time. Those are historical partner claims, not evidence of current partner status.
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Why “sustainable Bitcoin” remains contested
A protocol certificate addresses a bounded claim about mining conditions. It does not settle broader questions about how to account for the environmental impact of Bitcoin holdings or mining. Ibañez and Freier’s 2023 review says frameworks for accounting for sustainable Bitcoin holdings remain contested. It also notes that whether mining’s ability to shift electricity use is only a mitigation factor or can help decarbonize the wider grid is an empirical question. Read their discussion in “Don’t Trust, Verify: Towards a Framework for the Greening of Bitcoin”.
What to check when evaluating a mining certificate
For any sustainability certificate, including an SBC, examine the boundaries of its claim rather than treating the label as a complete verdict. Relevant questions include:
- Which energy source or emissions claim does it cover?
- What mining activity and time period were measured?
- Who verified the claim, and what evidence was disclosed publicly?
- How is a certificate mapped to the bitcoin mined?
- Is an environmental outcome measured directly, or inferred from the claimed energy source?
The cited materials do not provide enough current SBC methodology to answer those questions or rate the scheme against them.
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