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An Efficient Offline Electronic Cash System Based on the Representation Problem (1993) - Brands.pdf.gz

Balancing Accountability and Privacy Using E-Cash (2006) - Camenisch, Hohenberger, Lysyanskaya.pdf.gz

Compact E-Cash (2007) - Camenisch, Hohenberger, Lysyanskaya.pdf.gz

CryptoNote v2.0 [used in Monero and ByteCoin] (2013) - Saberhagen.pdf.gz

Enabling Blockchain Innovations with Pegged Sidechains (2014) - Maxwell et. al.pdf.gz

Endorsed E-Cash (2007) - Camenisch, Lysyanskaya, Meyerovich.pdf.gz

Hashcash A Denial of Service Counter Measure (2002) - Back.pdf.gz

ShadowCash Zero-Knowledge Anonymous Distributed E-Cash via Tracable Ring Signatures (2014) - Rynomster, Techovert.pdf.gz

Untraceable Offline Cash in Wallets with Observers (1994) - Brands.pdf.gz

Zerocash Decentralized Anonymous Payments from Bitcoin (2014) - Ben-Sasson, Chiesa, Garman, Green, Miers, Tromer, Virza.pdf.gz

Zerocash Decentralized Anonymous Payments from Bitcoin [extended] (2014) - Ben-Sasson, Chiesa, Garman, Green, Miers, Tromer, Virza.pdf.gz

Zerocoin Anonymous Distributed E-Cash from Bitcoin (2013) - Miers, Garman, Green, Rubin.pdf.gz