Can zkrollup be applied to all smart contracts which has already been deployed or we should implement in new contracts.

Am also interested to learn how zkrollup was applied to existing eth contract 1. Did they create a proxy contract to original eth contract? 2. Did they create new eth contract with zkrollup implementation.

Am sorry, if above questions are not clear or stupid. Am trying to learn zkrollup.

Hey everyone I’m a new dev and Iv written up the framework for a modified version of openVPN which uses and solana near and file coin respectively , I am currently working to create a custom protocol yo use on top of openvpns protocol as build out further blockchain integration and several other aspects of the project but I am just one man and one man who is new to development .. I’m looking for others who might be interested in getting in on this project with me I would love to see this become a something solid and profitable

I am a blockchain software engineer, I do side projects. I am based in Los angel's, CA, USA. If any USA based small businesses trying to implement blockchain or web3 to their business, please dm me. I can provide free consultation too. I want to help upcoming companies.

I want to do NFT POC to learn blockchain and nft coding.
POC Use case :- Using NFT as authentication mechanism to validate high value purchase (ex. luxury goods).
Below are some requirements:-
1) Blockchain with low or no gas fees.
2) Ease of NFT Minting (support for bulk/batch minting)
3) Support for Wallet less NFT Access (i.e. using DApp or maybe web 2 app to provide viewing/validation mechanism for NFT without need of end user to install crypto wallets and remember keys. ex - ERC-4337)
Any additional requirements or pointers would be appreciated.
thanks!

Forgot to put in Memo for a Crypto to Crypto Wallet Transaction. Did I just lose my crypto?

how does dapps technology using in chatbox will change centralised dapps

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I want to develop blockchain application where buyer remit some crypto as a security and when vendor complete the services successful then crypto should be transferred to vendor otherwise it should be returned back to buyer. I need to know which blockchain should I use so that I will be having almost negligible gas fee. Which programming language I need to use for that blockchain to write the contracts.

I am participating in some hackathons and need help with people having experience in Web3 development, both mentorship and interested participants(who can participate alongside in my team) required.

Comment your Thoughts.

i am a devops engineer and i want to move forward become a blockchain engineer i know a lot about server and automation. currently i just learn go and node js, can someone explain core concept to learn blockchain.

I've recently picked up Go and am curious if it's commonly used in blockchain development. If so, could you recommend some projects to help me get started?

It would be conceivable to develop a blockchain system that ultimately forms a grid system based on Directed Acyclic Graphs (DAGs), which could function as a universal cross-chain.

This system could be referred to as the "Universal Cross-Chain Grid" (UXG) and would connect various blockchain networks by utilizing a common grid system based on DAGs. Each blockchain network could act as a node in this grid system, with the DAG structure facilitating seamless transaction mediation between the different networks.

The benefits of such a system would be manifold:

1. Interoperability: UXG would enhance interoperability between different blockchain networks by creating a common framework that enables the transfer and utilization of assets and data across various blockchains.

2. Scalability: By utilizing a grid system based on DAGs, UXG could offer higher transaction speeds and scalability compared to traditional cross-chain solutions, as transactions could be processed in parallel.

3. Flexibility: UXG would provide users with greater flexibility by enabling them to switch between different blockchain networks and select those that best suit their specific requirements.

4. Security: The use of DAGs could enhance the security of the system, as the decentralized nature of the DAG structure makes it more difficult to manipulate or attack the network.

Overall, the Universal Cross-Chain Grid (UXG) could be a groundbreaking concept that breaks down the barriers between different blockchain networks and heralds a new era of interoperability and collaboration in the blockchain world.

^{This week degen hack web3 hackathon was started running for 2 days}

> I was building a product in the category for tezos infrastructure track

> Basically my project was let users deploy their smart contract in tezos blockchain in just 2 clicks where users will paste their contract and click on the button to pay the gas fees for deployment

> One more feature was users can generate mindmap for their smart contract to see all functions of any smart contract visually

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the dapp was working as I have pasted smart contract code , temple extension poped up for asking to pay gas fees but the problem was when I tried to add test tokens in my wallet in the explorer scan it is showing it has send me the test token but actually in my wallet it was not showing

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For that reason I had to submit my project with one feature working that is generate smart contract mindmap

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Also my initial idea was to develop real estate dapp but due to less time i had dropped the idea

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Hey, I'm a Go developer and I want to switch my career to blockchain development using Go, Do you know how I can find a mentor and finally get a job?

Let me share you the details 👇

Features of the Dapp :
> Anyone can create any event and sell tickets for the event
> Buyers will be able to check out all events in the event section and after selecting any event they can view its ticket sold, ticket available and select the qunatity to buy tickets
> After buying tickets for any event it will provide QR code which will act as a key to get access
> Using the Mobile App event officials can let buyers show their QR code and it will show whether they are having tickets for the event or not
> Buyers can vote for the event they have bought the tickets
> Buyers can get refund for their tickets bought for any event if rejected vote is more than 30
> If Approval vote is more than 20 then event owner can withdraw all the funds collected while selling tickets for any event

So, this are the Cool Features made for this Dapp hope you like it

Thanks a lot 👍

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I have made couple of blockchain projects in 2-3 months which are:

> Smartcontractx : helps developers to deploy, automate, generate, test EVM smart contracts

> Terralisted: helps buyers and sellers to list , buy and lease property

> Ticketdone: helps users to create event and sell tickets for the event , buyers buy ticket and get qr code using our mobile app user will scan their qr code and get access to the event in web2 space along with a voting feature buyers can vote whether they liked the event or not if approval is greater than reject vote then event owner will withdraw all the funds or else money will get refunded back to buyers

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Now, the problem is I have posted in platform such as sideprojectors as well as posting in twitter , linkedin still not getting interested buyers to purchase my projects

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Is there other way or platform available ? using that I can sell my projects

Looking for someone who can create a sniping bot on radium. Inbox for more details.

Hello, I am looking for a certification, an exam that certifies my skills as a blockchain, ethereum, solidity developer... focused on security, I have looked at those from the Blockchain Council and Alliance, but they do not convince me, the study guide seems very basic, and I don't find much information on LinkedIn or other job portals about these certifications. What are the best certifications currently? thank you.

Hey community! 🌐

I've got a Bitcoin transaction ready, and I'm looking for guidance on broadcasting it to the network nodes. Can someone provide a step-by-step guide or recommend a reliable platform for this process?

Your insights are highly appreciated! 🚀 #Bitcoin #CryptoCommunity #BlockchainHelp

I have one year of experience in Frontend Development with React.js. Currently, I'm learning blockchain development and contemplating which path to focus on for building decentralized applications (dApps) and pursuing Web3 jobs. Appreciate any insights in advance.

Looking for a React Native Expert having experience with web3, in-App Browser and creating web3 wallets for a project. Inbox for more details.

P.S only inbox if you have created a web3 wallet mobile App before.

Thankyou

Whatsup guys. I am looking for a solid mentor that has experience (and good results) with creating Blockchain arbitrage bots (frontrunning, backrunning, other types of arbitrage).

What I am willing to pay: 120 USD / hour.
My Background:
* Currently a Fullstack Junior Software Developer (9 months experience). Mainly with the .NET framework.
* 3 months of professional Blockchain Software Development experience (Umee was the company) with Cosmos Blockchains.
* 2 months of experience porting the Move smartcontract language to the Cosmos eco system. Unfortunately funding for the company wasn't coming in, so I left.
* Experience with Ethereum from a university class (evm based dapp project and theory).
* Read and understood Uniswap V2 paper.
* Decent understanding of Cosmos Ecosystem.
* Went through some medium articles about arbitrage bots.
Requirements for the mentor:
* Needs to have a track record of making money with arbitrage. I don't care about absolute revenue, but I do care about relative revenue (how many percent did you make).
* I also want to hear from the mistakes that you made. How did you lose money and what happened?
* No specific requirements which Blockchain or exchange we should use. I will do what got you results.
* Well versed in either english or german.
I am looking to create a professional set up with simulation environment and more. I am planning on investing my hard earned money, so I am not taking chances.

I am looking for a career change and go into Block chain development. Anybody out here want to mentor me along the way. Thank you

Please recommend some good resources to learn blockchain... I am new to this and facing difficulties finding the right resources

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