Soubhik Deb @soubhik_deb Twitter profile

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Soubhik Deb

1 year

We have all heard about public goods, private goods, toll goods and common-public resources (CPR) from econ. I have been thinking about how this classification is applicable to blockchains. A thread 🧵

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Soubhik Deb

@soubhik_deb

4 months

Gm everyone! I will be at Denver from 2/26 to 3/3. Would love to meet all the innovators, whether you are in tech or in BD or in finance/econ or in governance and discuss how to enrich and enhance @eigenlayer .

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Soubhik Deb

@soubhik_deb

10 months

AVS/middleware/infra teams headed to Stanford SBC next week, we’d love to chat @eigenlayer . If interested, send me a note to connect! I will be there 8/27-9/1.

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Soubhik Deb

@soubhik_deb

8 months

Amazing discussions on solo staking!

Nethermind

@NethermindEth

8 months

Meet our solo staker panel: @soubhik_deb @d_gusakov @langerstwit moderated by @mpfzajac #NethermindSummit @EFDevconnect

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Soubhik Deb

@soubhik_deb

6 months

@Rocket_Pool + @eigenlayer powering d/acc

jasperthefriendlyghost.eth

@drjasper_eth

6 months

Once upon a time, I wrote about the @Rocket_Pool layer zero bull case. Rocket Pool has a bonafide army of node operators with huge capital at stake - the perfect partner to turn @eigenlayer into a decentralized powerhouse. Time to bring yield to decentralization, a thread 👇

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Soubhik Deb

@soubhik_deb

2 months

Two points to elaborate on point 4 of rarity of forks: (a) it is critical that the rules of coordination determined in the setup phase for AVSs be codified in a manner such that any fault in the AVS is self-evident and self-executable during execution phase.

Sreeram Kannan

@sreeramkannan

2 months

Some great questions on how Eigen works. We will put together an FAQ on EIGEN. 1. EIGEN is staked for validation tasks so the fee revenue is paid to EIGEN stakers in the normal mode not only when there is a challenge or fork. 2. EIGEN staking has the ability to charge for

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Soubhik Deb

@soubhik_deb

1 year

With @sreeramkannan , in this article, we present a mental model to decide when slashing might be beneficial to you and what risks you need to be mindful of if you incorporate slashing.

a16z crypto

@a16zcrypto

1 year

In this new post that @sreeramkannan & @soubhik_deb wrote for us, they break down the controversial practice of “slashing” in Proof of Stake protocols, providing a careful analysis of under what circumstances slashing might be useful. Read here:

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Soubhik Deb

@soubhik_deb

7 months

An excellent summary on how @NEARProtocol ’s super fast finality layer on @eigenlayer would work. This would bring cryptoeconomic security to fast interoperability. @NEARProtocol 🤝 @eigenlayer

altan tutar

@mraltantutar

7 months

Since we have announced our partnership with @eigenlayer , I have been getting the same question: "What is @NEARProtocol 's Super Fast Finality Layer (SFFL), and how does it help the Ethereum rollups?" Here's a tweet thread about our partnership and what we are building 🧵

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Soubhik Deb

@soubhik_deb

1 year

The baby has taken the baby steps. Long way to go!

EigenLayer

@eigenlayer

1 year

We are excited to announce the release of the testnet for the first stage of the EigenLayer protocol, which supports liquid and native restaking. Please read the full details here: 1/8

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Soubhik Deb

@soubhik_deb

1 month

A really nice thread on the current landscape of AVS ecosystem on @eigenlayer . Lot more to come in coming months.

JK 🛡️

@jonathankingvc

2 months

@sreeramkannan often compares @eigenlayer to a “Verifiable Cloud” platform for Crypto, but what exactly does this mean? Sharing some thoughts on that framing along w/ @cbventures take on the burgeoning EigenLayer AVS landscape.👇🏾 See 🧵 for summary.

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Soubhik Deb

@soubhik_deb

8 months

Would be at @EFDevconnect from 11/13-11/19. Excited to meet all AVS/middleware/infra builders who are thinking of building on EigenLayer ecosystem. Shoot me a DM if you wanna chat.

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Soubhik Deb

@soubhik_deb

1 year

🕵️‍♂️🐞

Code4rena

@code4rena

1 year

📣 Calling all Wardens! Put your skills to the test on @eigenlayer ’s codebase. Help secure their ecosystem to take your share of the $90,500 prize pool. Start now:

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Soubhik Deb

@soubhik_deb

2 years

Looking forward to working together to herald the age of open innovation!

calvin

@cjliu49

2 years

Above all @eigenlayer values “open innovation”. To me this is a commitment to collaborative, positive-sum experimentation, and I plan to live it fully. It’s going to be a challenging, rewarding journey, and a total privilege to go on it with this team. I’m grateful & excited :)

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Soubhik Deb

@soubhik_deb

9 months

Making decentralization incentive compatible

EigenLayer

@eigenlayer

9 months

🔥 Are you a dedicated Ethereum Solo Staker? Is decentralization your passion? Want to contribute to Ethereum’s consensus and EigenLayer restaking? 📝 We’re excited to roll out the EigenLayer Solo Staker Working Group and Intake Questionnaire! We're eager to understand your

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Soubhik Deb

@soubhik_deb

3 years

Our paper "PoSAT: Proof-of-Work Availability and Unpredictability, without the Work" would be presented on March 2 at Financial Crypto 2021 ( @IFCA_Conference ). Would be great of you could join my short talk! Paper: Long video:

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Soubhik Deb

@soubhik_deb

5 months

@0xkydo @eigenlayer 👀

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Soubhik Deb

@soubhik_deb

2 years

Enabling relay decentralization and censorship-resistance via @eigenlayer

Jon Charbonneau

@jon_charb

2 years

Sneak peek of a very exciting new proposal Augmenting MEV-Boost using @eigenlayer to enhance Ethereum’s censorship resistance @sreeramkannan will speak soon at the SBC MEV workshop Quick summary below

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Soubhik Deb

@soubhik_deb

9 months

@0xkydo more like liveness violations can't be solved by zk. You can still get safety proofs with zk.

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Soubhik Deb

@soubhik_deb

1 year

However, it seems in blockchains we need another axis for classifying these goods: the security axis. This security axis will specify under what trust assumptions, can a good be classified into a particular category. Let us go through some examples.

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Soubhik Deb

@soubhik_deb

1 year

From econ, we have CPR: (non-excludable, rivalrous), public goods: (non-excludable, non-rivalrous), club goods: (excludable, non-rivalrous) and private goods: (excludable, rivalrous).

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Soubhik Deb

@soubhik_deb

4 years

Happy to announce that our work on designing a peer-to-peer network for #Blockchains that minimises the broadcast latency has been accepted at ACM PODC ( @podc_disc ). Paper: Pre=recorder presentation video: 1/n

Perigee: Efficient Peer-to-Peer Network Design for Blockchains

PODC-2020 paper by Mao, Yifan; Deb, Soubhik; Venkatakrishnan, Shaileshh Bojja; Kannan, Sreeram; Srinivasan, Kannan

www.youtube.com

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Soubhik Deb

@soubhik_deb

7 months

Censorship is observable from outside the chain but the accused validators can't be penalized algorithmically in a smart contract. This work is a solution on how to solve it. 🧵👇

Sreeram Kannan

@sreeramkannan

8 months

Talk on “Revere: Observability gadget for attestor censorship resistance” at Thanks @TimBeiko and @tzhen for the kind invite!

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Soubhik Deb

@soubhik_deb

1 year

(CPR, Honest-majority assumption): NFT airdrop, liquidation, DEX swap with exchange rate within a range are examples. They are non-excludable and rivalrous with only honest-majority assumptions.

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Soubhik Deb

@soubhik_deb

1 year

With honest-majority assumption, these goods are rivalrous. Assuming honest-majority assumption is not violated, observe that if an NFT with unique rarity is confirmed to have been bought by someone, it is not available anymore for anyone else to buy it in the canonical fork.

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Soubhik Deb

@soubhik_deb

9 months

Idea garden for open innovation!

EigenLayer

@eigenlayer

9 months

Ready to build the next unicorn? Introducing our newest research on The EigenLayer Universe 🌌 Explore 15 unicorn ideas 🦄 and what you can build with EigenLayer now! Research Post:

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Soubhik Deb

@soubhik_deb

1 year

In economics, one of the ways to classify goods is based on exclusivity and rivalry. Exclusivity basically asks if anyone can be excluded from consuming the good. Rivalry asks if consuming the good prevents other eligibles from consuming it.

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Soubhik Deb

@soubhik_deb

2 years

The beacon state contains inactivity_scores per-validator which are updated during inactivity leak. Would be awesome to have smart contracts access to those scores so that stakers can hedge against their validators for not participating when chain not finalizing. Any risks?

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Soubhik Deb

@soubhik_deb

1 year

Many protocols like Themis, Multiplicity, Espresso sequencing for guaranteeing short-term censorship-resistance feature algorithmic consensus for achieving multilateral ordering of transactions and so, non-excludability relies on honest-majority assumption.

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Soubhik Deb

@soubhik_deb

1 year

Would be great to have thoughts from @glenweyl @skominers

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Soubhik Deb

@soubhik_deb

1 year

Assuming the simple P2P transaction like transfer of ETH between two friends is not time sensitive, then having the guarantee of ledger-growth and long-term censorship-resistance makes the exclusion difficult.

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Soubhik Deb

@soubhik_deb

4 months

What should we call it? Hack-proof-as-a-service or Invariant-monitoring-as-a-service ?

Anto

@blocksek

4 months

We built ODIN @EthereumDenver , it’s a security service that uses @eigenlayer to bond block builders to follow the rules of ODIN , i.e protocol invariants like x * y = k is never violated by a transaction. It was an amazing experience hacking with @zk_asv

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Soubhik Deb

@soubhik_deb

1 year

On the other hand, if you are making an RPC call to some other entity who is running a full node, then you are trusting this entity to truthfully let you know about all forks or data from the canonical fork. But no one can exclude you from making your choice on how to read data.

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Soubhik Deb

@soubhik_deb

2 years

So true! Innovation in middlewares requires far more heavy lifting.

zuberg 🐂

@0xzuberg

2 years

One pattern with the new stuff getting built in crypto is they are far more engineering-heavy than projects that were built in 2020-2021 Last year if you knew some Solidity you were relevant as a dev and could get hired at pretty much anywhere

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Soubhik Deb

@soubhik_deb

1 year

(Public goods, Inter-subjective trust assumption): Reading data from blockchain is an example. They are non-excludable and non-rivalrous with inter-subjective trust.

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Soubhik Deb

@soubhik_deb

7 months

@krishnanrohit Religion

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Soubhik Deb

@soubhik_deb

1 year

It is non-rivalrous as a P2P transaction getting included in a chain doesn’t prevent other P2P transactions from getting included in the chain eventually (assuming long-term censorship-resistance).

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Soubhik Deb

@soubhik_deb

1 year

They are non-excludable (ignoring gas fees) if short-term censorship-resistance (necessary due to time-sensitivity of these goods) is guaranteed.

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Soubhik Deb

@soubhik_deb

2 years

Session 3 - talk 1: @dntse talking on "Bitcoin-Enhanced Proof-of-Stake Security: Possibilities and Impossibilities" #ConsensusAtSBC

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Soubhik Deb

@soubhik_deb

1 year

This tweet thread only touches the tip of the categorization of all possible goods in blockchain. I believe that to build a good economic model around various goods in blockchain and extend decades/centuries of economic research, these categorizations will be of immense help.

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Soubhik Deb

@soubhik_deb

1 year

Can these four terms: powers-of-tau setup, trusted setup, srs and crs, be used interchangeably? If not, what are the differences? Have seen many places use them interchangeably, making me confused!

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Soubhik Deb

@soubhik_deb

1 year

Without short-term censorship-resistance in L1, NFT Airdrops, liquidation events etc., become excludable as an address trying to consume it can be excluded easily due to unilateral ordering power of the block proposer.

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Soubhik Deb

@soubhik_deb

1 year

In the case of Ethereum, inactivity leak ensures that ledger growth continues. As for long-term censorship-resistance, weak-subjectivity and PBS with crList would be necessary.

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Soubhik Deb

@soubhik_deb

6 months

@colludingnode Such dual confirmation rules break the limitations of CAP theorem which are imposed on single confirmation rule-based ledgers

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Soubhik Deb

@soubhik_deb

1 year

Assuming no network eclipse, if you are running your own full node (need not be participating in the consensus), one can read all data from blockchain (advantage of “open-state” architecture).

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Soubhik Deb

@soubhik_deb

1 year

Congrats! Can’t wait to see the awesome stuff you end up building!

creativether

@OnChainIntern

1 year

Got accepted into the @ETHIndiaco fellowship 🥳 Looking forward to building cool stuff over the next 8 weeks 🚀🚀 @devfolio

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Soubhik Deb

@soubhik_deb

1 year

It is non-rivalrous as someone being able to read data doesn’t prevent anyone else from reading the blockchain data.

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Soubhik Deb

@soubhik_deb

1 year

It is rivalrous because one person raising a successful challenge prevents others in the committee from raising the same challenge.

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Soubhik Deb

@soubhik_deb

1 year

If relying on altruism, both ledger growth and long-term censorship-resistance will be guaranteed (here we are ignoring the censorship attack where a block does not get enough attestations because it contains a certain transaction).

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Soubhik Deb

@soubhik_deb

10 months

@dannyryan Under peer discovery, even if a node knows the node_id of the peers that can satisfy its sampling demands, how does the node get the info on the IP addresses of the peers from whom it can sample? Does the dynamic nature of custodied_rows and custodied_columns makes it harder?

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Soubhik Deb

@soubhik_deb

1 year

(Public goods, Unconditional trust assumption): On-chain state correctness for an address is an example. They are non-excludable and non-rivalrous with unconditional trust.

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Soubhik Deb

@soubhik_deb

2 years

Session 3 - Talk 2: Oren Katz talking on "Challenges in consensus protocols for Validity Rollups"

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Soubhik Deb

@soubhik_deb

6 months

@colludingnode There is whole line of work on putting a finality gadgets on top of longest chain protocols (which offer dynamic availability). Here are couple of them: ,

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Soubhik Deb

@soubhik_deb

1 year

If there is no upper bound on how much stake can opt-into AVSx, someone being able to opt-into AVSx doesn’t prevent anyone else from being able to opt-into the AVSx.

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Soubhik Deb

@soubhik_deb

1 year

(Public goods, Honest-minority assumption / adversary getting bankrupt if relying on rationality): Simple P2P transactions between two accounts is an example.

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Soubhik Deb

@soubhik_deb

4 years

Wrote my first distributed systems project in Rust - Paxos. Here is the link to the repo: . Thanks @rustlang for amplifying the various #rustlang resources. Also, big shout out to @ryan_levick for his tutorial video on threads that motivated me to do it.

GitHub - dragonboy1994/paxos: Building Paxos backend in Rust

Building Paxos backend in Rust. Contribute to dragonboy1994/paxos development by creating an account on GitHub.

github.com

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Soubhik Deb

@soubhik_deb

2 years

Session 3- Talk 3: @jadler0 taking on "Proof-of-Stake in the Model of Accountability" #ConsensusAtSBC

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Soubhik Deb

@soubhik_deb

4 years

Is there an one word for the event when you tell a joke which the listener doesn't find funny and then you ask whether the joke was boring to which the same listener laughs hysterically? Is the word #poorjoke ?

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Soubhik Deb

@soubhik_deb

1 year

(Club goods, Honest-minority assumption / adversary getting bankrupt under rational model): Example is the ability to opt into an AVSx in EigenLayer that specifies only stakers with rETH can opt-into it. It is excludable and non-rivalrous.

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Soubhik Deb

@soubhik_deb

2 years

Seems like #Bitcoin is the only #NFT where each of their price is same as the floor.

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Soubhik Deb

@soubhik_deb

6 months

@colludingnode Single confirmation rule-based ledgers can give you either liveness/dynamic availability or safety/finality under network partition but not both. Dual confirmation rule-based ledgers break that limitation.

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Soubhik Deb

@soubhik_deb

6 months

@sreeramkannan @uPeterKris @uPeterKris this video would be a good starting point

Fair-ordering in Blockchains - Sreeram Kannan (University of Washin...

Financial markets when studied closely and understood can pave way for prospects to gain asymmetric advantage. There are several means to keep up with trends...

www.youtube.com

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Soubhik Deb

@soubhik_deb

1 year

It is excludable because the AVSx is excluding stakers holding any other token from opting-into it. Furthermore, long-term censorship-resistance is needed to ensure that any staker is able to opt-into this AVSx eventually. So we have the same trust assumption as the previous e.g.

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Soubhik Deb

@soubhik_deb

2 years

@EigenlayrIntern

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Soubhik Deb

@soubhik_deb

1 year

@ConradLudgate The following book from Mor Harchol-Balter is really awesome.

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Soubhik Deb

@soubhik_deb

1 year

Anyone in the social consensus who is provided with the pre-transition state, the transactions being executed and the rules for state transition can be convinced unconditionally whether a particular on-chain state transition is wrong or right.

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Soubhik Deb

@soubhik_deb

1 year

@superphiz @Jasper_ETH @ether_fi Problem is this leads to an employer-employee relationship. How do you ensure that these validators aren’t now incentivized to always support the payer’s position so that they can keep getting paid?

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Soubhik Deb

@soubhik_deb

1 year

Given that you have to be part of a committee to have the ability to be able to raise a fraudproof makes it excludable. Furthermore, long-term censorship-resistance in L1 is warranted for being able to submit the fraudproof.

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Soubhik Deb

@soubhik_deb

2 years

@aeyakovenko What happens to the price of the L1 tokens in the swap transactions in between the loan tx and repayment tx? Seems like complete devaluation.

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Soubhik Deb

@soubhik_deb

1 year

(Private goods, Honest-minority assumption / adversary getting bankrupt under rational model): Ability to submit a fraudproof in the slow mode of a rollup only if you are part of a committee is an example. It is excludable and rivalrous.

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Soubhik Deb

@soubhik_deb

1 year

@samlafer Where is my SL (social layer) for weak subjectivity? 😅

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Soubhik Deb

@soubhik_deb

3 years

My new academic website:

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Soubhik Deb

@soubhik_deb

1 year

One account being able to get on-chain state correctness doesn’t mean some other account can’t have on-chain state correctness. Therefore, non-rivalrous.

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Soubhik Deb

@soubhik_deb

2 years

@amytongwu Soon enough best builders will be deploying their own infrastructure innovation (aka middlewares) permissionly using restaking paradigm @eigenlayer . #openInnovation

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Soubhik Deb

@soubhik_deb

2 months

(b) if the setup phase for the AVS is designed properly, any attempt to raise fradulent challenges will incur cost to an adversarial challenger in the form of challenge bond (referred to as CPF). This is because no one in social consensus will accept the challenge and hence, the

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Soubhik Deb

@soubhik_deb

1 year

Ushering a new era of hyperscaling!

Mantle

@0xMantle

1 year

2/ Mantle is a new generation L2 network that derives security from @Ethereum via rollups and uses a modular approach to build a separate data availability layer with one of our partners @EigenLayer . Hyperscaled throughput on heavy-duty applications is now possible.

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Soubhik Deb

@soubhik_deb

2 years

@bbuddha_xyz @pmcgoohanCrypto One can probably incentivize detection of premature decryption by giving rewards if someone can present pre-image before the scheduled decryption.

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Soubhik Deb

@soubhik_deb

4 months

@RichardBagshaw @P2Pvalidator @eigenlayer @ssv_network Thanks for having me! It was a great panel.

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Soubhik Deb

@soubhik_deb

3 years

We then propose the #first proof-of-stake protocol using verifiable delay functions that achieves true dynamic availability and unpredictability while being secure under honest majority.

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Soubhik Deb

@soubhik_deb

4 years

@emollick Seems like the researchers left Japan, South Korea, Taiwan, Singapore from the record. Was that deliberate?

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Soubhik Deb

@soubhik_deb

2 months

Combination of both these points will ensure that forks are raised only if intersubjective faults can be attributed beyond a reasonable doubt, which lends to rarity.

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Soubhik Deb

@soubhik_deb

1 year

@ObadiaAlex @phildaian @ErtemTas @sreeramkannan are you perhaps pointing to the lack of consideration of bribery by exogeneous agents in rational models?

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Soubhik Deb

@soubhik_deb

1 year

If relying on rationality, then the adversary has to expend a lot of money to be able to incentivize validators from excluding this transaction.

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Soubhik Deb

@soubhik_deb

4 years

Inspiring

Yale Economic Growth Center

@YaleEGC

4 years

Susan Eggers, computer scientist and 1st woman to win Eckert-Mauchly Award, began her career problem-solving at Yale EGC. Read her story: @CRA_WP @ComputerSociety @TheOfficialACM @margmartonosi @csenews @JeffDean @rebeccawb @bobbyschnabel @juliaferraioli

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Soubhik Deb

@soubhik_deb

2 years

A question on EVM that has been bugging me for a while: Why is zerobyte priced differently from nonzerobyte in a CALLDATA? Any help appreciated. @solidity_lang @ethereum

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Soubhik Deb

@soubhik_deb

3 years

We first discuss how existing proof-of-stake protocols like #Ouroboros #SnowWhite #SleepyModelOfConsensus are vulnerable to costless simulation attack where the computation of verifiable random function can be simulated by an adversary without any cost.

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Soubhik Deb

@soubhik_deb

4 years

@DebSoumyajit @outreachy Congrats 🎉🎊

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Soubhik Deb

@soubhik_deb

6 months

@colludingnode That is the part of dual confirmation rule for Ethereum in order to self-heal from network partition. Under network partition, LMD Ghost keeps going on (dynamic available) while Casper FFG stops finalizing until inactivity leak slashes enough inactive stake.

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Soubhik Deb

@soubhik_deb

3 years

Preprint of our newest paper on Fair ordering in permissionless systems is out now! Let us know if you have any comments. #Blockchain #permissionless #distributedsystems #fintech

IACR

@IACR_News

3 years

#ePrint Order-Fair Consensus in the Permissionless Setting: M Kelkar, S Deb, S Kannan

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Soubhik Deb

@soubhik_deb

1 year

Therefore, the fork that is considered to be canonical by social consensus will always have the correct on-chain state as per the rules of state transition. Hence, no address can be excluded from having on-chain state correctness.

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Soubhik Deb

@soubhik_deb

2 years

@epolynya tl;dr if apecoin built on Celestia, profit from corruption > cost of corruption

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Soubhik Deb

@soubhik_deb

2 years

@bbuddha_xyz @0xDinoEggs L1 premium, bruh!

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Soubhik Deb

@soubhik_deb

1 year

@mikeneuder @soispoke @metachris Given that getHeader doesn’t check the identity of the caller, that also means the relay can be subjected to DOS by getting it to respond with the current highest-bid header, no? How do relays currently safeguard against that?

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Soubhik Deb

@soubhik_deb

2 years

@moodlezoup If there is a mechanism to do forced inclusion via Ethereum to ensure censorship-resistance of the rollup, this would break the privacy guarantees of the sealed-bid auction. Maybe a decentralized sequencing network for privacy-first zk rollup would help.

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Soubhik Deb

@soubhik_deb

2 years

Now you have multiple sequencer proposing multiple blocks and one prover generating one proof for all these multiple blocks. #ConsensusAtSBC

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Soubhik Deb

@soubhik_deb

4 years

@jonhoo @rustlang It is clear now. Thanks 🙂

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Soubhik Deb

@soubhik_deb

2 years

To solve the issue of adversarial sequencer getting the prover to do more work for generating expensive proofs, fee mechanism is incorporated

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Soubhik Deb

@soubhik_deb

2 years

@moodlezoup Nice work! I was thinking more about the concern raised on overcollaterization at the end of the article. An alternate idea could be to conduct the sealed-bid auction in a privacy-first zk rollups. One issue would be potential censorship by the sequencer.

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Soubhik Deb

@soubhik_deb

2 years

Other PoS uses social consensus for resolving the issue of determining canonical fork under private adversarial attack. Babylon uses bitcoin timestamp to resolve this attack.

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Soubhik Deb

@soubhik_deb

2 years

@algo_class Thanks @algo_class for the kind words

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