Sustainable digital assets? Evidence on green cryptocurrencies from a bibliometric analysis and systematic review

Hassan M.S.; Schinckus C.; Nguyen M.H.; Abdul Wahab N.S. · Management of Environmental Quality (2026) · DOI: 10.1108/meq-12-2025-0791

Resumen

Purpose – The study examines whether green cryptocurrencies merit their environmental label by combining a bibliometric map (2017–2025; 200 Scopus-indexed publications) with a targeted systematic review of the most impactful studies. Design/methodology/approach – Science mapping using Bibliometrix and VOSviewer reveals four persistent clusters: (1) Bitcoin-anchored benchmarks for energy use and market behaviour; (2) protocol design focused on Ethereum's Proof-of-Stake and efficiency; (3) linkages between digital assets and ESG finance; and (4) a cross-cutting sustainability hub. Findings – Findings underscore the necessity of lifecycle-based environmental metrics and auditable energy or emissions disclosures so that financial evidence aligns with ecological outcomes. A harmonised taxonomy and protocol-level reporting framework are proposed as prerequisites for credible environmental accountability, robust portfolio assessment and effective policy design in sustainable digital finance. Originality/value – The paper provides a holistic assessment of the emerging field “green crypto-currencies” with concrete implications/suggestions for scholars, policy-makers and investors.

Instituciones: Universidad ESAN