It's Onchain Island

 It's Onchain Island


Short note: Ah...I have attached resource links, reference and main repo link, kindly refer that to understand concepts.)
Let's continue our story of web3...Ah, with small context! Starting from start.

Back in March 2024, I participated in my very first Web3 hackathon.
What started as curiosity about “how blockchain works” quickly turned into a deep dive into wallets, smart contracts, transactions, miners, tokens, and the Ethereum Virtual Machine (EVM).

I also explored Layer 1 vs Layer 2 technologies — and realized why Ethereum’s architecture allows for more scalable, flexible, and maintainable solutions compared to Bitcoin.

But the real turning point for me was discovering Account Abstraction (AA), especially the ERC-4337 standard introduced in 2016, which is now one of the hottest topics in Web3 development.

EOAs vs Smart Contract Accounts

Before we talk about AA, let’s understand the two major types of accounts on Ethereum:

  1. Externally Owned Accounts (EOAs):

    • Controlled by a cryptographic private key.

    • Simple to use, but they rely heavily on human interaction.

    • Problem: The crypto market moves in milliseconds; manual transaction management is just not enough.

  2. Smart Contract Accounts:

    • Accounts controlled by code, not keys.

    • Can execute transactions automatically based on predefined agreements.

    • Enable features like multi-signature, automated execution, and programmable transactions.

This is where Account Abstraction bridges the gap.

What is Account Abstraction (ERC-4337)?

Account Abstraction redefines how accounts work on Ethereum by merging the simplicity of EOAs with the programmability of smart contracts.

With ERC-4337, you get:
✅ Gas fee sponsorship (via Paymasters)
✅ Social recovery options
✅ Multi-signature wallets
✅ Bundled transactions for efficiency
✅ Programmable accounts

Instead of being locked to the limitations of EOAs, users now have smart contract wallets that behave just like EOAs, but with enhanced features.

📖 For more details: 

https://eips.ethereum.org/EIPS/eip-4337

https://docs.0xgasless.com/whitepaper

Enter 0xGasless

While learning about AA, I came across https://0xgasless.com/ — a powerful infrastructure provider that makes it easier to implement ERC-4337 in real-world projects.

0xGasless provides:

  • Bundler services → Packages and sends user operations to the blockchain.

  • Paymaster services → Sponsors or manages gas fees for user transactions.

  • SDKs & AgentKit → Simplifies integration of AA into dApps.

Essentially, 0xGasless abstracts away the complexity of ERC-4337, so developers can focus on building applications instead of reinventing infrastructure.

ERC-4337 Architecture (Simplified)

Here’s how the architecture works in practice:

  1. UserOperation:
    Instead of regular transactions, users sign “UserOperations” — data packages describing the desired action.

  2. Bundler:
    The Bundler collects multiple UserOperations, bundles them, and sends them to the blockchain mempool.
    👉 https://docs.0xgasless.com/accountabstraction/Core%20Concepts/bundlers

  3. EntryPoint Contract:
    A special smart contract that validates and executes these operations.

  4. Paymaster:
    Sponsors or manages gas fees for the user.
    👉 https://docs.0xgasless.com/accountabstraction/Core%20Concepts/paymasters

  5. Smart Contract Wallet:
    The wallet that finally executes the transaction, with advanced features like recovery, automation, and gasless transactions.

This architecture ensures better UX, programmability, and gas fee flexibility — all without modifying Ethereum’s core protocol.

OnChainIsland Hackathon 🌴

We had the chance to test all of this at the OnChainIsland Hackathon, powered by Avalanche & 0xGasless, and organized by 2:47pm Studio.

Our project — NuroTraders — was selected, and we built it entirely on top of this ecosystem.

NuroTraders — What We Built

🌍 Data Sources

  • On-chain data: Market volumes, token transactions, flows, and insights.

  • Off-chain data: News + social media sentiment (via Santiment).

🤖 AI Layer

  • Used Gemini Flash (free version) for AI-powered analysis.

  • Combined on-chain and off-chain data into actionable trading insights.

⚙️ Account Abstraction Integration

We integrated 0xGasless components to make the system truly Web3-native:

  • Paymaster: To sponsor user gas fees.

  • Bundler: To batch multiple UserOperations and send them efficiently.

  • Agentic-core (from 0xGasless AgentKit): To enable smooth interaction with smart contract wallets.

In practice, this meant that users could interact with our platform without worrying about gas fees or complex transactions — while still enjoying the advanced programmability of smart accounts.

Architecture of NuroTraders

(Kindly open it in PC, it's sucks in mobile - sorry for responsiveness metrics)

Here’s a simplified flow of how our system worked:

  1. Data Aggregation Layer: Fetch market data (on-chain + off-chain).

  2. AI Analytics Layer: Run Gemini Flash for analysis & insights.

  3. Frontend Layer: Display insights to users in real time.

  4. Web3 Integration Layer:

    • User interacts with smart contract wallet.

    • Bundler packages transactions.

    • Paymaster sponsors fees.

    • EntryPoint executes transactions on-chain.

Result → A seamless, gasless, AI-driven trading assistant for crypto users.

Key Learnings

This hackathon was a turning point for me. I realized:

  • Web3 ≠ scary. With tools like 0xGasless, integrating ERC-4337 is much simpler.

  • Web2 + Web3 skills are equally important. Fetching APIs, building UIs, and designing scalable backends still matter.

  • AI + Web3 = 🔥Market analysis becomes so much more powerful when AI is plugged into blockchain data.

Project Links 🔗

Gratitude 🙌

A huge thanks to my Web3 teammates:

  1. Raj Agarwal (for financial strategies)

  2. Aniket Kumar (for designing)

And of course, to Avalanche, 0xGasless, and 2:47pm Studio for organizing such a fantastic hackathon.

Final Thoughts 🌟

Every hackathon, every project is a reminder that there’s always more to learn, practice, and build.

Web3 is still young — and combining it with AI + Account Abstraction can unlock financial autonomy in ways we’ve never seen before.

For anyone exploring this space:
👉 Start with Account Abstraction (ERC-4337)
👉 Experiment with 0xGasless
👉 Build small, iterate fast, and don’t be afraid to push boundaries.

The future of finance is not just decentralized — it’s intelligent, user-friendly, and gasless.

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