The Sustainable Bitcoin Standard (SBS) was described in a 2022 announcement as a protocol for verifying miners’ use of renewable and clean energy and issuing Sustainable Bitcoin Certificates (SBCs) for bitcoin mined under those conditions. The certificates were intended to carry a protocol-specific “Proof of Sustainable Mining” claim to investors without changing bitcoin itself. They do not establish that Bitcoin as a whole is sustainable.
How the Sustainable Bitcoin Standard was described
In an announcement dated April 28, 2022, CleanSpark said SBS worked with renewable-energy nonprofits and standards bodies in renewable energy and energy audits to issue SBCs to miners verified to use renewable and clean energy. The announcement said a certificate was associated with each bitcoin a miner sustainably mined. CleanSpark’s announcement is a historical description of the initiative’s stated model, not an independent assessment of its environmental performance.
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Bradford van Voorhees, identified there as an SBS co-founder, described the intent this way: “SBS was designed to allow ‘Proof of Sustainable Mining’ to be transferred between bitcoin miners who use renewable energy and investors without disrupting the fungibility of Bitcoin.” This states the founders’ aim; it does not independently validate the transferability or the underlying environmental claims.
What an SBC is—and what it does not establish
An SBC was presented as a transferable record associated with bitcoin mined under the protocol’s clean-energy conditions. The intended distinction is between the certificate’s claim about mining conditions and the bitcoin itself: the announcement said the certificate could reach investors without disrupting bitcoin’s fungibility.
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The cited announcement does not specify the energy threshold, geographic boundary, measurement period, detailed verification method, or evidence package for an individual certificate. Without those details, an SBC should be understood as a protocol-specific claim, not a universal sustainability label or proof of Bitcoin’s total emissions, lifecycle impact, or effect on the electric 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 sources also do not document the full naming or corporate history linking SBS and SBP.
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CleanSpark’s 2022 announcement named CleanSpark, BitDeer, and Luxxfolio (formerly Westblock) as mining partners at that time. Those are historical partner claims; they should not be read as confirmation of current partnerships.
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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsWhy the word “sustainable” needs a defined boundary
There is no single universally accepted accounting framework that makes a Bitcoin holding “sustainable.” Ibañez and Freier’s 2023 review describes sustainable-Bitcoin accounting as contested. It also says whether mining’s ability to act as a flexible grid load is simply a mitigation factor or produces net decarbonization for the wider grid remains an empirical question. A claim about a particular miner’s energy sourcing therefore cannot, on its own, settle the environmental impact of the whole network or its effects on the grid. Read the review, “Don’t Trust, Verify: Towards a Framework for the Greening of Bitcoin.”
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to assess a Bitcoin sustainability certificate
To compare SBS/SBP with another scheme, look for the scope and evidence behind its claim rather than relying on the word “sustainable.” Useful questions include:
- Which energy sources or emissions does the scheme cover?
- What mining activity and time period are measured?
- Who verifies the claim, and what verification method is disclosed?
- How does a certificate map to specific mined bitcoin?
- What evidence is available publicly, and is an environmental outcome measured or inferred?
The sources cited here do not provide enough current SBC methodology to answer those questions for the program today. No specific emissions reduction, energy share, certificate count, or numerical threshold is established in the cited materials.
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