flare-ftso

Resolve the FtsoV2 contract via ContractRegistry (getTestFtsoV2 on Coston2, getFtsoV2 on mainnet), then call getFeedById or getFeedsById with the bytes21 feed ID. View calls for block-latency feeds are free; some state-changing calls require a fee calculated via IFeeCalculator.

Use wagmi with @flarenetwork/flare-wagmi-periphery-package, which exports chain configs, ABIs, and the ContractRegistry address. Resolve the FtsoV2 address with useReadContract on getContractAddressByName, then call getFeedByIdInWei and format the 18-decimal result with viem's formatUnits.

Block-latency feeds update every block (~1.8 seconds) via incremental delta updates from VRF-selected providers. Scaling anchor feeds update every 90 seconds through a full commit-reveal process across all providers and serve as accuracy anchors verifiable with Merkle proofs.

FTSO does not list every pair directly, but you can derive cross-pairs by dividing two existing feeds, such as BTC/USD divided by ETH/USD. Scale the base feed decimals to twice the quote decimals before dividing to retain precision.

No. This skill is documentation and reference only; it never signs transactions, handles keys, or moves funds. All fee payments, volatility incentives, and delegation require explicit user confirmation in developer-controlled environments.