2026-10-03T23:27:16Z https://drops.dagstuhl.de/oai

oai:drops-oai.dagstuhl.de:27861 2026-10-02T17:40:21Z ddc:004 open_access

The Cost of Secure Restaking vs. Proof-Of-Stake Mamageishvili, Akaki Sudakov, Benny Proof-of-Stake Restaking Efficiency We compare the total capital efficiency of secure restaking and Proof-of-Stake (PoS) protocols. First, we consider the sufficient condition by EigenLayer project for the restaking graph to be secure, that can be checked in a polynomial time in the restaking graph size. The condition implies that it is always possible to transform such a restaking graph into separate secure PoS protocols. We derive two main results: upper and lower bounds on the required extra stakes to add to the validators of the secure restaking graph to be able to transform it into secure PoS protocols. In particular, we show that the restaking savings compared to PoS protocols can be very large and can asymptotically grow as a square root of the number of validators. We also study a complementary question of aggregating secure PoS protocols into a secure restaking graph and provide matching lower and upper bounds on the PoS savings. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Akaki Mamageishvili and Benny Sudakov 2026 Is Part Of LIPIcs, Volume 395, 8th Conference on Advances in Financial Technologies (AFT 2026) InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/LIPIcs.AFT.2026.7 urn:nbn:de:0030-drops-278610 https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.AFT.2026.7 eng https://creativecommons.org/licenses/by/4.0/legalcode