Fiews

When Chainlink launched on Ethereum mainnet in 2019, Fiews was one of its first node operators. In the same year Fiews started an Ethereum RPC service with a free and a premium tier, which gave other Chainlink node operators and DeFi protocols access to Ethereum without running their own client. Between 2021 and 2022 Fiews extended this RPC service to BNB Smart Chain, Avalanche and Polygon.

Fiews takes part in each new Chainlink product launch and supports CRE, CCIP, Data Feeds, Data Streams and Proof of Reserve. CCIP, the Cross-Chain Interoperability Protocol, carries tokens and cross-chain messages between blockchains. With Proof of Reserve, a node reports onchain whether the assets behind a token exist, and CRE, the Chainlink Runtime Environment, combines these services into one workflow.

Fiews runs these nodes with high availability, monitoring around the clock and an incident response process. A price feed that stops updating can freeze a lending protocol, because liquidations and new loans depend on the latest price.

Next to its Chainlink work, Fiews runs validator nodes on other networks. In 2024 Fiews joined the testnet of Allora, a decentralized AI network, as a validator operator. In 2025 Fiews ran distributed validator clusters on Ethereum mainnet for the Simple DVT module of Lido, built on SSV, which spreads each validator over several independent operators.

Distributed validator technology adds operator diversity and geographic distribution to Ethereum staking, because no single company holds the full signing key of a validator. Fiews monitored the performance and attestation effectiveness of its clusters continuously.

Fiews owns and manages its enterprise servers end to end and spreads them over several data centers for failover. A hybrid setup adds capacity from more than one cloud provider when demand rises.

Fiews LLC is the company that operates Fiews, a provider of blockchain nodes and validators founded in 2018. Partners in more than 60 blockchain ecosystems use its infrastructure, from Ethereum and Solana to layer-2 networks such as Base, Arbitrum and Optimism.

A Chainlink node operator needs the node software, a reliable connection to every blockchain it serves, paid access to the data sources it reports and monitoring that raises an alarm when a node falls behind. Operators that serve Data Feeds also stake LINK, which they can lose after a valid alert about a feed.

Anyone can install the open-source Chainlink node software and answer data requests from smart contracts on a blockchain. Joining the operator group of a production data feed is a separate step, and the selection looks at the uptime and security record of the operator.