Blockchain Infrastructure

Blockchain and Web3 infrastructure development

Paul Titov & Co builds Ethereum and TRON infrastructure for products that genuinely need wallet integration, transaction processing, monitoring, internal ledgers, and reconciliation. We provide software engineering, not exchange, custody, investment, or other regulated financial services.

Blockchain is valuable here as infrastructure, not as a story added to an otherwise conventional product. We build the services that allow applications to observe networks, create and track transactions, integrate wallets, and keep product state consistent with on-chain events.

The difficult work is operational: confirmation policies, retries, idempotency, reorganisation handling, key-management boundaries, fee estimation, ledger reconciliation, monitoring, and the cases where an external network behaves differently from the happy path.

We work on Ethereum and TRON integrations as part of a wider product system, including backend services, internal tooling, data, and infrastructure. We provide software engineering services; we are not an exchange, custodian, investment provider, or financial institution.

Wallets, payments, and transaction processing

Ethereum engineering can include EVM-compatible networks, JSON-RPC, WalletConnect, wallet integrations, Solidity contracts, ERC-20 transfers, event monitoring, indexing, and gas estimation. TRON work can include TronWeb, TronGrid, Node HTTP APIs, TRC-20 monitoring, and USDT payment flows where appropriate.

Payment systems require quote and expiry logic, address or contract interaction, transaction detection, confirmation policies, idempotent callbacks, failed-payment handling, refunds as product states, and clear customer and support interfaces. Key-management and signing responsibilities are defined explicitly according to the custody model and provider architecture.

Watchers, ledgers, and reconciliation

Blockchain watchers collect blocks, transactions, logs, and token events; queues process them; webhooks notify product services; and reconciliation compares network state with the internal ledger. Monitoring covers provider health, block progress, pending transactions, reorganisation handling, queue depth, and mismatched balances.

Our blockchain product engineering experience describes the complete customer and operational flow. Related fintech development, software engineering, and DevOps capabilities support identity, transaction state, reporting, deployment, and monitoring around the chain.

Building for irreversible events

Blockchain integration starts with the product’s accounting model, not with a wallet button. We define when an on-chain event becomes a recognised payment, how many confirmations are required, what happens during a reorganisation or provider outage, how duplicate notifications are handled, and how support can explain the state to a customer. Private keys and signing authority are separated from ordinary application code wherever the risk model requires it.

Typical delivery includes address or contract integration, transaction watchers, idempotent processing, fee and confirmation policies, a conventional internal ledger, reconciliation jobs, exception queues, alerts, and an operations interface. We test against delayed, missing, duplicated, and replaced transactions before production. The client receives documentation that connects contract behaviour, backend states, financial records, and recovery procedures.