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Nakamoto Consensus with Verifiable Delay Puzzle

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arxiv 1908.06394 v5 pith:EPATPMBS submitted 2019-08-18 cs.DC

classification cs.DC
keywords consensusdelayverifiableprotocolpuzzleattackscomparedfunction
verification ladder T0 review T1 audit T2 compute T3 formal
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This paper presents a new consensus protocol based on verifiable delay function. First, we introduce the concept of verifiable delay puzzle (VDP), which resembles the hashing puzzle used in the PoW mechanism but can only be solved sequentially. We then present a VDP implementation based on the continuous verifiable delay function. Further, we show that VDP can be combined with the Nakamoto consensus in a proof-of-stake/proof-of-delay hybrid protocol. We analyze the persistence and liveness of the protocol, and show that compared to PoW, our proposal consumes much less energy; compared to BFT leader-election based consensus algorithms, our proposal achieves better resistance to long-range attacks and DoS attacks targeting the block proposers.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Fast Deterministically Safe Proof-of-Work Consensus

    cs.CR 2025-12 conditional novelty 8.0 of 10

    Sieve-MMR is a proof-of-work consensus protocol that achieves deterministic safety and constant expected latency in a fully permissionless model by layering MMR on a new time-travel-resilient broadcast primitive called Sieve.

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