The rule.
“principal adverse impacts on the climate and other environment-related adverse impacts”
Verbatim extract, read on 4 November 2026 from the source below. Everything else on this page is NorthPoint’s plain-English reading.
What it requires.
- Information on the principal adverse impacts on the climate, and other environment-related adverse impacts, of the consensus mechanism used to issue each crypto-asset, published in a prominent place on the website. It may be taken from the white papers.
- For marketing: an 'eco-friendly' or 'carbon-neutral' claim about an asset has to sit alongside — and not contradict — that published disclosure.
Who it applies to.
Crypto-asset service providers, for each crypto-asset in relation to which they provide services. ESMA's regulatory technical standards (Article 66(6)) set the content, methodologies and presentation.
Common violations in marketing copy.
Trade the greenest coins on the planet.
A sweeping environmental claim that the per-asset disclosure does not support is misleading.
Asset pages with no sustainability information
The provision requires the information to be published prominently.
Non-compliant vs compliant.
“100% green crypto. Zero impact.”
“[Token] uses proof of stake. Its estimated energy use and other environmental indicators are published here → [website/sustainability].”
Related rules.
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Article 66(2) · European Union
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Article 66(3) · European Union
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Article 66(4) · European Union
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Markets in Crypto-Assets Regulation (EU) 2023/1114.
Source.
| Instrument | Regulation (EU) 2023/1114 on markets in crypto-assets (MiCA) |
|---|---|
| Provision | Article 66(5) |
| Primary source | https://www.esma.europa.eu/publications-and-data/interactive-single-rulebook/mica/article-66-obligation-act-honestly-fairly |
| Official text | https://eur-lex.europa.eu/eli/reg/2023/1114/oj/eng |
| Read from | ESMA Interactive Single Rulebook, one page per article (ESMA's own publication of the MiCA text) |
| Checked |
This page is general, sourced information for marketing teams, not legal advice. The examples are written by NorthPoint to illustrate the rule; for a binding view on your own promotion, retain qualified counsel in the jurisdiction concerned.