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Nibesh Shrestha @nibeshrestha2

Applied Researcher @SUPRA_Labs PhD in Computer Science | Distributed Consensus and Blockchains nibeshrestha.github.io Rochester, NY Joined April 2019
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Nibesh Shrestha @nibeshrestha2

4 weeks ago

Excited to share our latest work “Optimistic, Signature-Free Reliable Broadcast and Its Applications”, accepted to ACM CCS 2025! Reliable Broadcast (RBC) is a key building block for BFT protocols. We present the first signature-free RBC that: ✅ Tolerates up to f < n/3 Byzantine…

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Andrew Lewis-Pye @AndrewLewisPye

a month ago

Looking forward to speak at the Science and Engineering of Consensus workshop on Sunday in Berkeley. I'll talk about recent work with @kartik1507 and @nibeshrestha2 on our "Pipes" model for analysing blockchain protocols. One of the advantages of the model is that it actually…

Nibesh Shrestha retweeted
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Aniket Kate @aniketpkate

2 months ago

Fast finality for reliable broadcast,  asynchronous verifiable secret sharing (AVSS), asynchronous verifiable information dispersal (AVID), and blockchains while maintaining optimal fault tolerance of 33%! paper: arxiv.org/abs/2505.02761 Now, all these primitives can be…

Nibesh Shrestha retweeted
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Kartik Nayak @kartik1507

2 months ago

A thread summarizing research on the good-case latency and resilience of partial synchrony protocols. Lower bound 1 (DLS): It is impossible to solve agreement under partial synchrony against a Byzantine adversary if f >= n/3. (decentralizedthoughts.github.io/2019-06-25-on-…) Lower bound 2 (Good-case…

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Nibesh Shrestha @nibeshrestha2

2 months ago

Big update for Hydrangea! It now tolerates >33% faults (Byzantine or crash) and still commits in 2 rounds under certain parameterizations. For n = 3f + 2c + k + 1, Hydrangea commits in 2 rounds when faults <= (c+k)/2 for some parameter k; otherwise commits in 3 rounds while…

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Kartik Nayak @kartik1507

3 months ago

Big update for Hydrangea! It now tolerates >33% faults (Byzantine or crash) and still commits in 2 rounds under certain parameterizations. For n = 3f + 2c + k + 1, Hydrangea commits in 2 rounds when faults <= (c+k)/2 for some parameter k; otherwise commits in 3 rounds while…

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