Ledger Link: A Scalable Blockchain Platform with Smart Contract Automation and Layer-2 Integration

Abstract

Currently blockchain platforms are not capable of managing sufficient transactions per second. And the gas fees? They make most real world scenarios essentially infeasible. We built Ledgerlink Both these bottlenecks can be linked together, using Ethereum. smart contracts with Arbitrum’s Layer-2 rollup mechanism. Hashing coupled with cryptography and consensus engine (supports both). PoW and POS) eliminate changes in the data. L2 part provides throughput of the order of 10x that of mainnet. you, gas prices are less than 90% lower. Tech stack wise – Solidity. TypeScript, Express, and Next.js TypeScript, optimally backend with express, next as a whole. Frontend tailwind. Simulated load tests were carried out. Enterprise-grade volumes, which promote volumes, are. and can be accomplished without the latency and cost nightmares that you will normally. see on Layer-1. In the present paper we are going to walk through our architecture, the decisions that we made on the way (some good, some we’d) re- consider, and the benchmarking deliverables.

Introduction

The text discusses the limitations of deploying serious applications on the Ethereum mainnet, mainly due to high gas fees, low throughput (~15 TPS), and unpredictable transaction costs. While blockchain offers strong benefits such as decentralization, cryptographic security, and trustless systems (introduced through Bitcoin and expanded by Ethereum smart contracts), scalability remains a major challenge.

To address this, the proposed system Ledger Link is built using a Layer-2 solution (Arbitrum) to achieve higher throughput and lower costs while maintaining Ethereum’s security. The system is designed as a modular blockchain-based platform for managing financial, healthcare, and supply chain data using independently auditable smart contract modules.

The architecture is layered and includes:

• A custom blockchain engine with PoS/PoW support and 12-second block cycles
• A service layer with multiple modules (auth, wallets, AI fraud detection, healthcare, supply chain, etc.)
• A backend using Express.js with JWT authentication and RBAC
• A Next.js frontend with real-time updates via WebSockets
• PostgreSQL database integration

The system leverages Arbitrum Layer-2 to significantly improve scalability and reduce costs compared to Ethereum mainnet.

The literature review covers:

• Blockchain evolution (Bitcoin, Ethereum, smart contracts)
• Consensus mechanisms (PoW, PoS, Lightning Network, rollups like Arbitrum)
• Security challenges (reentrancy attacks, DAO hack, tools like Slither and Mythril)
• Real-world blockchain applications in finance, healthcare, and supply chains

Overall, the work proposes a scalable, modular, and real-world-ready blockchain system that overcomes Ethereum’s limitations while maintaining decentralization and security.

Conclusion

So to conclude. Ledger Link integrates smart contracts and L2 rollups and the performance figures come into real sense when used by real enterprises. TypeScript end to end, Modular architecture, about 10x throughput and 98%+ gas savings over raw Layer-1. We believe that is a good place to start. Limitations? Yes, several. The challenge period of Arbitrum implies real finality is slower than it would appear in L2 confirmations. Inter-layer connection is incomprehensible to non-technical users. The simulated blockchain engine is very useful to illustrate concepts but it is certainly not a production consensus system. We’re aware of all of these. Future plans. ZK rollups rather than optimistic would provide immediate finality, without a challenge window. We would like cross-chain support which is currently Ethereum only and is restrictive. The healthcare data could be encrypted with homomorphic encryption, which would truly be pow-erful to enable you to perform computations on encrypted data without prior decryption. And the AI models, frankly the Llama 3.3 analysis is good but a fine-tuned model that specifically analyzes the patterns of blockchain transactions would be much better. Lots to do still.

References

[1] S. Nakamoto, “Bitcoin: A peer-to-peer electronic cash system,” Bitcoin Whitepaper, 2008. [2] V. Buterin, “Ethereum: A next-generation smart contract and decentral-ized application platform,” Ethereum Whitepaper, 2013. [3] S. Azouvi et al., “MedRec: Using blockchain for medical data access,” IEEE, 2018. [4] IBM Food Trust Docs, “Blockchain for supply chain traceability,” 2022. [5] Sui Blockchain Whitepaper, “Parallel execution for scalable DLT,” 2023. [6] TON Whitepaper, “The open network (Sharding for mass adoption),” 2021. [7] E. Ben-Sasson et al., “Zerocash: Decentralized anonymous payments,” IEEE, 2014. [8] M. Crosby, P. Pattanayak, S. Verma, and V. Kalyanaraman, “Blockchain technology: Beyond Bitcoin,” Applied Innovation Review, Issue 2, pp. 6–19, 2016. [9] M. Swan, Blockchain: Blueprint for a New Economy. O’Reilly Media, Sebastopol (CA), 2015. [10] Z. Zheng, S. Xie, H. Dai, X. Chen, and H. Wang, “An overview of blockchain technology: Architecture, consensus and future trends,” IEEE Int. Congress on Big Data, pp. 557–564, 2017. [11] A. Arora et al., “Past, present, and future of blockchain in finance,” Journal of Business Research, 2024. [12] G. Wood, “Ethereum: A secure decentralised generalised transaction ledger,” Ethereum Project Yellow Paper, 2014. [13] N. Atzei, M. Bartoletti, and T. Cimoli, “A survey of attacks on Ethereum smart contracts,” Principles of Security and Trust, pp. 164–186, 2017. [14] S. Dziembowski et al., “General state channel networks,” ACM Confer-ence on Computer and Communications Security, 2018. [15] J. Poon and T. Dryja, The Bitcoin Lightning Network: Scalable Off-Chain Instant Payments, Lightning Network Whitepaper, 2016. [16]

Copyright

Copyright © 2026 Shubham Verma, Vishal Kumar Pachauri, Tanmay Aggarwal, Shubham Maurya, Mukesh Kumar Singh, Shubham Maurya. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.