Ayo Seun Solomon
Engineering Lead @ Orokii.com, A leading web3 payment remittance processor, New Jersey USA, Senior Blockchain Developer @ SwearIt.io A web3 supply-chain management service in EU
Lagos, Nigeria
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Solomon Ayo is an accomplished blockchain engineer and software developer at Orokii.com. With over half a decade of engineering experience, he has contributed to groundbreaking projects, shaping the future of decentralized technologies. Solomon specializes in scalability, security, protocol engineering, cryptography and programming in blockchain. Solomon is also an advocate for diversity and inclusion in tech, actively mentoring aspiring developers and promoting blockchain education.
Area of Expertise
Topics
From EIP-712 to Production: Designing Safe, Human-Readable Signing APIs
Wallet signing is one of the most critical and most broken parts of Web3 user experience. Users are routinely asked to approve opaque transactions they cannot interpret, creating significant security risks.
This session explores how to design backend-driven signing APIs using EIP-712 structured data to produce human-readable, verifiable transaction intents. We will break down how smart contract calls are transformed into typed data, how backend systems construct and validate signing payloads, and how to prevent replay attacks, phishing vectors, and signature misuse.
The talk will focus on production patterns for building secure signing pipelines that bridge low-level blockchain interactions with clear, user-safe experiences.
Atomic Transactions Across Chains: Designing APIs for Financial Integrity in Web3 Systems
Financial systems demand strong guarantees; no double execution, no inconsistent state, and no partial failures. However, blockchain transactions are asynchronous and probabilistic, making these guarantees difficult to achieve.
This session explores how to design API layers that enforce atomic-like guarantees across blockchain interactions. We will cover backend orchestration patterns, idempotent API design, retry-safe transaction pipelines, and techniques for preventing race conditions and double-credit scenarios.
We will also examine multi-step transaction flows such as onramp/offramp systems and cross-chain operations, showing how to maintain consistency and reliability even under failure conditions.
Beyond the Surface: Mastering the Depths of Blockchain Protocols
As an Ethereum protocol engineer building Goether(https://goethercore.github.io/docs/) and a contributor to bandada(https://github.com/bandada-infra/bandada), my daily work revolves around understanding and contributing to the core components that power the Ethereum blockchain.
More focus in recent years have seen many developers building decentralized applications (dApps) on top of Ethereum, relatively few delve into the intricacies of the protocol itself.
In this talk we will have a walkthrough into the scope of the Ethereum protocol, from the foundational building blocks that make up the data format and structure of the second most popular blockchain in the world.
We will explore:
- 𝐊𝐞𝐜𝐜𝐚𝐤256, the almighty cryptographic hash function used in Ethereum, and its role in ensuring data integrity, immutability and singleton in the respect of creating address.
- 𝐑𝐞𝐜𝐮𝐫𝐬𝐢𝐯𝐞 𝐋𝐞𝐧𝐠𝐭𝐡 𝐏𝐫𝐞𝐟𝐢𝐱 (RLP) encoding scheme, which is used to serialize and deserialize data structures in Ethereum.
- 𝐬𝐞𝐜𝐩256𝐤1 and its importance to the ecosystem.
- 𝐝𝐞𝐯𝐏2𝐏 node messaging among others.
- 𝐄𝐭𝐡𝐞𝐫𝐞𝐮𝐦 𝐏𝐫𝐨𝐭𝐨𝐜𝐨𝐥 𝐃𝐚𝐭𝐚 𝐅𝐨𝐫𝐦𝐚𝐭 (EPDF) which defines the structure and encoding of the various components that make up the Ethereum blockchain. This includes blocks, transactions, receipts, and the state trie. Mastering the EPDF is essential for contributing to the core protocol and understanding how data is organized and propagated across the Ethereum network.
Understanding these concepts provides any aspiring blockchain engineer the platform to build or contribute to technologies that define the future of decentralization.
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