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• Article 2026

  Portfolio optimization using cryptocurrency

  Raka Arjunaldi Pramana Putra, Mychelia Champaca

  19 Jan 2026 · DOI: 10.55942/pssj.v6i1.620

  233 Views

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  cryptocurrency portfolio optimization markowitz model mean variance optimization sharpe ratio
• Article

  Analysis of cryptocurrency as collateral from the perspective of Indonesian positive law and Islamic law: A comparison

  Jamie Armadi Jaya, Henry Anderson Parapat, Ahmad Mubarak, Etra Arbas

  01 Dec 2025 · DOI: 10.55942/pssj.v5i12.940

  324 Views

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  Cryptocurrency Collateral Object Indonesian Positive Law Islamic Law Digital Assets