Deepak Maram and Harjasleen Malvai

TL;DR Decentralized identity systems allow users to gather and manage their own credentials under the banner of self-created decentralized identifiers (DIDs). The key focus of DIDs is on shifting the control of a credential into users’ hands. Existing decentralized identity proposals, however, suffer from several…

by Mahimna Kelkar

TL;DR In current blockchain consensus protocols, a single miner or validator unilaterally controls the inclusion and ordering of transactions in a block. This form of temporary centralization is entirely at odds with the goals of decentralization. It also poses an acute problem for decentralized finance (DeFi). Arbitrageurs…

by Tyler Kell, Haaroon Yousaf, Sarah Allen, Sarah Meiklejohn, Ari Juels

Have you been offered the chance to earn unlimited passive income in cryptocurrency for life with no risks using a new technology called a smart contract? Congratulations! You may have just encountered a smart contract pyramid scheme.

Image from Wikimedia Commons

Pyramid schemes are not a new phenomenon, but they have found a new form in the nascent technology of smart contracts and decentralized, trustless programmable money. In this blog post we identify common characteristics of smart-contract based pyramid schemes…

by Jun-You Liu (Cornell, IC3), Surya Bakshi (UIUC, IC3), Shreyas Gandlur (Princeton), Ankush Das (CMU), and Andrew Miller (UIUC, IC3)

This research was done in collaboration with the UIUC Decentralized Systems Lab (DSL).

This post serves as the appendix to our post, “Using Universal Composability to Implement Off-Chain Payment Channels,”…

by Jun-You Liu (Cornell, IC3), Surya Bakshi (UIUC, IC3), Shreyas Gandlur (Princeton), Ankush Das (CMU), and Andrew Miller (UIUC, IC3)

This research was done in collaboration with the UIUC Decentralized Systems Lab (DSL).

Payment channels are one of the fundamental approaches for scaling cryptocurrency networks. In the academic cryptography literature…

IC3

The Initiative for CryptoCurrencies and Contracts (IC3) is a blockchain research initiative based at Cornell. Find out more about IC3 research at initc3.org.

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