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Chapter and Conference Paper
Anonymous Sidechains
Sidechains allow two or more blockchains to communicate with each other by transferring coins (or other ledger assets) from one to the other. Their functionalities set sidechains as one of the most prominent s...
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Chapter and Conference Paper
ZLiTE: Lightweight Clients for Shielded Zcash Transactions Using Trusted Execution
Cryptocurrencies record transactions between parties in a blockchain maintained by a peer-to-peer network. In most cryptocurrencies, transactions explicitly identify the previous transaction providing the fund...
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Chapter and Conference Paper
Proof of Censorship: Enabling Centralized Censorship-Resistant Content Providers
Content providers often face legal or economic pressures to censor or remove objectionable or infringing content they host. While decentralized providers can enable censorship-resistant storage, centralized co...
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Chapter and Conference Paper
Decentralized Anonymous Micropayments
Micropayments (payments worth a few pennies) have numerous potential applications. A challenge in achieving them is that payment networks charge fees that are high compared to “micro” sums of money.
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Chapter and Conference Paper
Accountable Privacy for Decentralized Anonymous Payments
Decentralized ledger-based currencies such as Bitcoin provide a means to construct payment systems without requiring a trusted bank. Removing this trust assumption comes at the significant cost of transaction ...
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Chapter and Conference Paper
Rational Zero: Economic Security for Zerocoin with Everlasting Anonymity
Zerocoin proposed adding decentralized cryptographically anonymous e-cash to Bitcoin. Given the increasing popularity of Bitcoin and its reliance on a distributed pseudononymous public ledger, this anonymity i...