November 15th, 2023 at 6:23 pm UTC · 3 min read
When it comes to NFT lending, NFT oracles are one of the most important factors in the lending process. NFT oracles must show accurate prices, mitigate risk, and be cost-efficient. To date, we’ve integrated with Chainlink for our oracles due to their effective risk management and mitigation systems, which are powered by their unique algorithm. We can safely say that their algorithm has worked well to mitigate risk, resulting in ParaX, and formerly ParaSpace, to have the lowest number of liquidations compared to other NFT lending platforms.
While Chainlink’s oracle algorithm has been great at mitigating risk, it falls short on price accuracy, which is also extremely important for NFT lending. Inaccurate price data could result in unhealthy accounts, a lower borrowing amount, and more. Previously, we’ve tried solving the price inaccuracies by developing our own NFT oracles, which are currently being used for the Bored Ape Yacht Club collection and several other collections. The main drawback of creating our own oracles is that they consume a lot of gas, which leads to large costs, especially for a protocol that needs price data for over 20 NFT collections.
However, we have found a new way with Chainlink’s CCIP and we’re excited to announce a new NFT oracle solution.
ParaX’s new open-source NFT oracles will now be more accurate and more gas efficient, while still maintaining best-in-class risk management systems. By using Chainlink’s CCIP (Cross-Chain Interoperability Protocol), ParaX can create interoperable NFT oracles which feed price data between a Layer 2, such as Arbitrum, and Ethereum. By feeding price data on Arbitrum, this enables greater price accuracy and reduces gas consumption by over 50% due to Arbitrum’s minimal gas fees.
Chainlink’s CCIP enables ParaX to securely transfer NFT floor price data cross-chain, whereas the current method involves feeding price data on Ethereum mainnet through three clients. The first two clients provide straightforward price feeds, while the third client aggregates all the prices onchain to generate a Finalize Price. These transactions are conducted on Ethereum mainnet and thus consumes a large amount of gas.
Using CCIP, ParaX can securely transmit NFT price data between a Layer 2 such as Arbitrum to Ethereum mainnet. The process involves using three clients on Arbitrum to feed price data to ParaX’s NFTFloorOracleProvider. After generating the Finalize Price, it is transferred cross-chain to the NFTFloorOracle contract on Ethereum mainnet. The Lending Pool then accesses the contract to pull price data and updates the oracles on the app. Since gas fees are cheaper on Arbitrum, the new oracles can feed data quicker and cheaper than any alternative, giving precise price data at a lower consumption rate.
By utilizing Chainlink’s CCIP to transmit the NFT price data, ParaX’s new oracles give more accurate price data and reduce gas consumption, while maintaining proper risk management strategies. This innovation enables ParaX to provide accurate, efficient, and gas-optimized NFT oracles for not only our users, but other NFTfi protocols due to their open-sourced architecture.
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