@inproceedings{ef63875a6436475c8d52cf52f80aede3,
title = "PieceWork: Generalized outsourcing control for proofs of work",
abstract = "Most prominent cryptocurrencies utilize proof of work (PoW) to secure their operation, yet PoW suffers from two key undesirable properties. First, the work done is generally wasted, not useful for anything but the gleaned security of the cryptocurrency. Second, PoW is naturally outsourceable, leading to inegalitarian concentration of power in the hands of few so-called pools that command large portions of the system{\textquoteright}s computation power. We introduce a general approach to constructing PoW called PieceWork that tackles both issues. In essence, PieceWork allows for a configurable fraction of PoW computation to be outsourced to workers. Its controlled outsourcing allows for reusing the work towards additional goals such as spam prevention and DoS mitigation, thereby reducing PoW waste. Meanwhile, PieceWork can be tuned to prevent excessive outsourcing. Doing so causes pool operation to be significantly more costly than today. This disincentivizes aggregation of work in mining pools.",
author = "Philip Daian and Ittay Eyal and Ari Juels and Sirer, {Emin G{\"u}n}",
note = "Publisher Copyright: {\textcopyright} International Financial Cryptography Association 2017.; 21st International Workshops on Financial Cryptography and Data Security, FC 2017 held in conjuction with 5th Workshop on Encrypted Computing and Applied Homomorphic Cryptography, WAHC 2017, 4th Workshop on Bitcoin and Blockchain Research, BITCOIN 2017,... ; Conference date: 07-04-2017 Through 07-04-2017",
year = "2017",
doi = "10.1007/978-3-319-70278-0_11",
language = "الإنجليزيّة",
isbn = "9783319702773",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
pages = "182--190",
editor = "Andrew Miller and Michael Brenner and Kurt Rohloff and Joseph Bonneau and Vanessa Teague and Andrea Bracciali and Massimiliano Sala and Federico Pintore and Markus Jakobsson and Ryan, {Peter Y.A.}",
booktitle = "Financial Cryptography and Data Security - FC 2017 International Workshops, WAHC, BITCOIN, VOTING, WTSC, and TA, Revised Selected Papers",
}