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Short Paper: Debt Representation in UTXO Blockchains - 2021

Short Paper: Debt Representation In Utxo Blockchains

Research Area:  Blockchain Technology

Abstract:

We provide a UTXO model of blockchain transactions that is able to represent both credit and debt on the same blockchain. Ordinarily, the UTXO model is solely used to represent credit and the representation of credit and debit together is achieved using the account model because of its support for balances. However, the UTXO model provides superior privacy, safety, and scalability when compared to the account model. In this work, we introduce a UTXO model that has the flexibility of balances with the usual benefits of the UTXO model. This model extends the conventional UTXO model, which represents credits as unmatched outputs, by representing debts as unmatched inputs. We apply our model to solving the problem of transparency in reverse mortgage markets, in which some transparency is necessary for a healthy market but complete transparency leads to adverse outcomes. Here the pseudonymous properties of the UTXO model protect the privacy of loan recipients while still allowing an aggregate view of the loan market. We present a prototype of our implementation in Tendermint and discuss the design and its benefits.

Keywords:  

Author(s) Name:  Michael Chiu & Uroš Kalabić

Journal name:  

Conferrence name:  International Conference on Financial Cryptography and Data Security

Publisher name:  Springer

DOI:  10.1007/978-3-662-64331-0_3

Volume Information: