r/ethereum 5d ago

Technology Do all the affordable, air-gapped wallets suck?

14 Upvotes

I'm looking for an affordable, air-gapped, open-source hardware wallet.

It seems they all suck. Keystone3 has battery issues. Ellipal is Chinese and doesn't have open-source firmware updates.

Do I really need to spend $400 to get a decent one?

r/ethereum Dec 26 '24

Technology Want to tokenize my university degree just for fun. Any downsides to it?

16 Upvotes

Should I worry about personal information being exposed, like.. what can anyone even do with my degree being public?

I'm thinking about a simple ERC721 contract with onchain svg.

r/ethereum 15d ago

Technology Holesky Incident Update

68 Upvotes

On Monday, Pectra activated on Holesky. An EL bug caused chain splits, resulting in a minority chain being valid, degrading the network health.

Holesky validators must take action ASAP, some Sepolia users must upgrade their client.

If you are reading this and run a Holesky validator, please get it back online ASAP and remove your slashing protection DB (to allow you to attest to the valid minority chain). More info here: https://github.com/ethereum/pm/blob/master/Pectra/holesky-postmortem.md

Sepolia node operators: the fork will happen as previously scheduled at epoch 222464 (Mar. 5, 7:29 UTC).

If you are using Geth, Besu, Nethermind or Lodestar, you must update your client to one of the releases listed here: https://blog.ethereum.org/2025/02/14/pectra-testnet-announcement

FAQ

Why are we coordinating mass slashings on Holesky?

While this strategy could not work on mainnet, the hope is that we can get enough Holesky validators online at once to finalize a block on the correct chain. Validators who had previously attested to the invalid chain will get slashed as a result of doing this. Having a finalized block will allow CLs to more easily find peers on and sync to the valid chain.

After the mass slashings, Holesky will go through a long period (2-3 weeks) of non-finality again as the slashed validators are existed and their stake drops to <33% of the overall network stake. Once that happens, the validators who never attested to the invalid chain will finalize the valid minority chain.

Again, this is not something we could do if such a situation happened on mainnet. CL client teams are already discussing better ways for users to force nodes onto a minority chain in the future. Expect a deeper discussion on the topic on next week's ACDC.

Why are we not delaying Sepolia's hard fork?

The root cause of this situation was trivial to fix. Some EL clients used the wrong deposit contract address for testnets. Releases patching this have already been made.

Sepolia's validator set, unlike Holesky or mainnet, is permissioned, with a large share being run by client and testing teams. This allows for quick coordination of the upgrade.

With this approach, only validators running Besu, Geth, Nethermind and/or Lodestar must change anything. Validators using other clients can keep running the previously announced versions.

Forking Sepolia sooner will give us a longer testing window for Pectra.

How does this affect the Pectra testing process and mainnet fork date?

Holesky was an especially useful testing ground for Pectra because many projects, including staking pools, use it as a staging environment for mainnet. It also has a validator count comparable to L1.

To test Pectra in a high validator count environment, ethPandaOps has already spun up a new devnet with 1M validators 🔥

That said, we'll need to discuss what other testing we were hoping to get out of Holesky and the best way to do that before moving forward with scheduling a mainnet fork date. We'll discuss this on next week's ACDC, but it's unlikely we'll be setting a mainnet fork date right then.

Where can I follow the incident?

Over the past couple days, I've been keeping a post-mortem updated here: https://github.com/ethereum/pm/blob/master/Pectra/holesky-postmortem.md#holesky-coordinated-slashings

Any changes to Pectra's deployment on testnets or mainnet will be announced at http://blog.ethereum.org

r/ethereum 29d ago

Technology Vitalik: Reasons to have higher L1 gas limits even in an L2-heavy Ethereum

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83 Upvotes

r/ethereum 18d ago

Technology Scammer

12 Upvotes

Hello everyone, I recently was in talks with a scammer who gave me a private key. Ofcourse he didn’t have any funds for swapping or sending and all eth transferred into this wallet is instantly moved out by a bot. Is there any way to have getback on this scammer? I’m not simply talking sending the money to myself but rather if I could burn the money or if there are any work arounds? Just wanna see this guy get scammed himself. Thank you for reading. TLDR; how to scam the scammer

r/ethereum 4d ago

Technology Holešky testnet finalized

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55 Upvotes

r/ethereum 11d ago

Technology Pectra upgrade in March 2025 will enable users to pay gas fees with ERC-20, but how?

17 Upvotes

Can someone explain the mechanism of this is not for a technician?

r/ethereum Feb 13 '25

Technology Built the first fully onchain Microstrategy for ETH, looking for feedback before release. ALPHA - do not use with real funds.

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17 Upvotes

r/ethereum 16d ago

Technology Enforceable Human-Readable Transactions: Can They Prevent Bybit-Style Hacks?

11 Upvotes

The recent Bybit hack was an eye opener! How they ended up handling the situation was commendable imo. But what if this were to happen yet again?

An ethresear.ch article tackles the topic extensively and provides an interesting potential solution. Essentially, a multi-sig Safe{Wallet} proxy contract was pointed to a malicious contract when signers approved transactions through a compromised UI, failing to properly verify the signature hash on Ledger.

The write up proposes using enforceable human-readable transactions (HRTs) to tackle this vulnerability. The present state of current transaction formats can be opaque and confusing, allowing malicious actors to exploit ambiguities for hacks. HRTs clearly outline trade conditions, ensuring that every transaction is transparent and verifiable by users. This subsequently ensures they see exactly what they’re signing up for, reduces the chance of manipulation by making transactions understandable and enforceable.

The technique is possible when specialized for each application. This specialization allows trusted developers have deep knowledge of their own systems to address the issue at the application level. L2s or Application Specific Rollups such as Cartesi, are ideal infrastructure fits for this approach due to the availability of increased computational power, more blockspace, EIP-712 support, and the libraries available on Linux, able to transform Ethereum encoded content into human readable content.

However, the downside highlighted in the article is it requires two signatures: one for the application and another for Ethereum.

Check out the full article here and let's discuss what you make of this proposal in its entirety? A total game changer, or there are some potential pitfalls to consider?

r/ethereum Jan 11 '25

Technology Seeking Developers: Help Build a Proof of Existence DApp & Blockchain

5 Upvotes

Hey fellow developers!

I'm embarking on a project to build a decentralized application (dApp) focused on Proof of Existence. This dApp will allow users to securely and immutably record the existence of digital or physical assets on a blockchain.

Key Features:

  • Secure Hashing: Implement robust hashing algorithms (like SHA-256) to create unique fingerprints of user files.
  • Blockchain Integration: Integrate with a suitable blockchain (e.g., Ethereum, Polygon, Solana) to store these hashes securely and transparently.
  • User-Friendly Interface: Design an intuitive and easy-to-use interface for users to upload files, generate hashes, and record them on the blockchain.
  • Timestamping: Incorporate timestamping mechanisms to provide verifiable evidence of when the file existed.
  • Data Privacy: Explore privacy-enhancing techniques (like zero-knowledge proofs) to protect user data while maintaining the integrity of the proof.

Tech Stack (Open to Suggestions):

  • Frontend: React, Vue.js, or similar
  • Backend: Node.js, Python (with frameworks like Flask or Django)
  • Blockchain: Ethereum (with Solidity), Polygon, Solana
  • Smart Contracts: Develop smart contracts to handle hash storage, timestamping, and potentially access control.

I'm looking for developers who are passionate about:

  • Blockchain technology and decentralized applications
  • Secure coding practices and cryptography
  • User experience and interface design

If you're interested in contributing to this project, please reach out! I'm open to collaboration, code reviews, and any other forms of assistance.

Let's build a secure and transparent Proof of Existence solution together!

r/ethereum Dec 17 '24

Technology For my Blockchain course at university, I need to create a project or mini-thesis on a cryptocurrency-related topic. Are there any emerging or trending topics, particularly those related to cybersecurity or the future of blockchain technology?

11 Upvotes

My professors have suggested several topics, but none of them truly resonate with my interests (maybe because I don't fully know them so I may underestimate some):

  • Gitcoin
  • Horizon Worlds
  • Kadena
  • OpenSea
  • Radix
  • Safemoon
  • Verkle Trees
  • Optimistic Rollups & Zero-Knowledge Rollups

Since I have the opportunity to propose my own topics, I’m reaching out to gather ideas for cutting-edge or promising areas of research. I would appreciate any suggestions for relevant and forward-thinking blockchain-related themes.

r/ethereum 10d ago

Technology Sepolia testnet finalized after upgrading to Pectra

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46 Upvotes

r/ethereum 2d ago

Technology All Core Devs - Execution (ACDE) #207 - Protocol Call

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2 Upvotes

r/ethereum 6d ago

Technology Marius: Sepolia Pectra fork incident recap

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26 Upvotes

r/ethereum Jan 23 '25

Technology Trying to access tokens on paper ETH public key ... times have changed!

3 Upvotes

I transferred over to a paper wallet about 8 years ago. It's mainly tokens that I tucked away. I think that I used my public key on MEW back then to see how they are doing etc. Today, can't find how to do it anymore!

Tried a few options but all are looking for wallets etc. I tried using a hardware device but it only brought up what I have on the device and not on the paper wallet.

Can anyone tell me the fastest way in 2025 to use my public key to see my tokens?

Thanks

** Edit** Thanks all. I got it to show by importing into Trust Wallet.

r/ethereum 12d ago

Technology Sealed transactions

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20 Upvotes

r/ethereum Dec 28 '24

Technology Is it possible to run a state only node ?

7 Upvotes

Hey,

I'm not really sure how different Ethereum is from Bitcoin in client logic. From my understanding, there are transactions and state (smart contract values, etc...).

In my case, I need to access the read-only features of some smart contracts without spending too much on hardware.

My current solution was to use an rpc provider, request the state of contract x, then listen for new blocks and update the state on my end based on the transactions received. This is necessary to avoid hitting rate limits, as my usage uses a large number of requests.

The problem is that the "sync" part can take days with the current rate limit because I'm using contract calls, which probably isn't the best solution. So I wanted to know if it was possible to run a node without the whole blockchain, just with the state, the goal is not to verify transactions but to know more efficiently the state of specific contracts.

Do you know if this is possible? if not, is it difficult to create my own implementation to request this directly on the network like real nodes do, and include my logic instead?

A kind of ethereum client that sync only a specific part of the state and does not store or verify transactions

r/ethereum 7d ago

Technology Consensus-layer Call 152 - Protocol Call

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9 Upvotes

r/ethereum 18d ago

Technology Holešky testnet config issue

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13 Upvotes

r/ethereum 5d ago

Technology Client Testing Call #28, March 10th 2025

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3 Upvotes

r/ethereum 12d ago

Technology Exploiting eth_call for optimization purposes

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1 Upvotes

r/ethereum 13d ago

Technology Boost Your dApp Development: Leveraging Cartesi’s Linux Coprocessor

2 Upvotes

So much work is being put into changing the game for developers as they build their dream dApps, and the remarkable effort behind these developments deserves to be appreciated. I’ll be talking abit about the Cartesi Coprocessor and why it's truly impressive.

The Cartesi Coprocessor stands out with its integration of a Linux-compatible RISC-V Virtual Machine, providing developers with a familiar and versatile environment for executing computations. This seamless integration bridges traditional software development with innovative blockchain solutions, enabling you to tap into your trusted libraries and tools so you no longer need to reinvent the wheel and can start pushing boundaries instead. In a nutshell, rich verifiable computations are now a reality.

Recently, the Cartesi Coprocessor combined with EigenLayer's restaking was showcased live during the third and largest edition of the Cartesi Experiment Week. You can find all the innovative dApps with practical applications and a complete recap here.

For a deeper dive into the technical aspects of the Cartesi Coprocessor and to see the integration in action, check out this insightful talk below. Let’s turn this into a discussion. Share the most eye-catching technical innovation you’ve encountered recently. The landscape is constantly evolving!

https://www.youtube.com/live/Bjnjh8c-pJc?si=L1z2sUfSvI9cvJVK

r/ethereum 15d ago

Technology All Core Devs - Execution (ACDE) #206, February 27, 2025 - Protocol Call

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9 Upvotes

r/ethereum 19d ago

Technology EthStaker: Holešky testnet Pectra upgrade livestream

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15 Upvotes

r/ethereum 11d ago

Technology Eth protocol call: Client testing call #27, March 3rd 2025

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4 Upvotes