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Retrofitting a two-way peg between blockchains

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  • Jason Teutsch
  • Michael Straka
  • Dan Boneh

Abstract

In December 2015, a bounty emerged to establish both reliable communication and secure transfer of value between the Dogecoin and Ethereum blockchains. This prized "Dogethereum bridge" would allow parties to "lock" a DOGE coin on Dogecoin and in exchange receive a newly minted WOW token in Ethereum. Any subsequent owner of the WOW token could burn it and, in exchange, earn the right to "unlock" a DOGE on Dogecoin. We describe an efficient, trustless, and retrofitting Dogethereum construction which requires no fork but rather employs economic collateral to achieve a "lock" operation in Dogecoin. The protocol relies on bulletproofs, Truebit, and parametrized tokens to efficiently and trustlessly relay events from the "true" Dogecoin blockchain into Ethereum. The present construction not only enables cross-platform exchange but also allows Ethereum smart contracts to trustlessly access Dogecoin. A similar technique adds Ethereum-based smart contracts to Bitcoin and Bitcoin data to Ethereum smart contracts.

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  • Jason Teutsch & Michael Straka & Dan Boneh, 2019. "Retrofitting a two-way peg between blockchains," Papers 1908.03999, arXiv.org.
    • Handle: RePEc:arx:papers:1908.03999
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    1. ASCE Editors, 2013. "2013 Conference Program," Annual Proceedings, The Association for the Study of the Cuban Economy, vol. 23.
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