Flow rolls out YOLDR testnet
Flow highlighted YOLDR, a consumer DeFi testnet product that locks principal in a vault while using generated yield to fund leveraged positions — a structured‑product approach that aims to protect savings while enabling yield amplification. The design mirrors TradFi structured notes but executed onchain for retail users. (x.com)
YOLDR’s front end is deployed at yoldr.vercel.app and the project’s source code is published under CodeswithrohStudio/yoldr on GitHub. (github.com) The testnet deployment is associated with the Flow testnet account 0x8401ed4fc6788c8a as referenced in the repository’s README. (github.com) The README states testnet contracts simulate a 5% APY accrual and support Shield positions denominated in GOLD, BTC, ETH and FLOW with configurable leverage from 1x to 5x, and that each Shield position mints an NFT. (github.com) Core contract function names and mechanics are documented in the repo—examples include harvestYield() to return accrued yield for Shield margin, a zero‑coupon math implementation for guarantees, and on‑chain streak tracking plus a rebalance engine. (github.com) Flow’s DeFi testnet registry lists vault contracts developers commonly use, including MockTauVault at 0x72104434BEc686B47a72bCa9b998624238BD2Ffb and MockYieldVault at 0x217aAC9594EcB6d3f6667A214CF579dd29ce78dd. (developers.flow.com) An onflow GitHub repo, FlowYieldVaultsEVM, documents a Solidity-to-Cadence bridge pattern where EVM users submit requests to a Solidity contract that are processed by a Cadence worker, with active issues tracking edge cases like stuck PROCESSING requests. (github.com) The YOLDR README notes Flow testnet confirmations at roughly 2–5 seconds and negligible per‑tx cost for small deposits, while Flow’s EVM documentation and quickstarts position the network for fast, low‑cost EVM‑compatible transactions suitable for frequent micro‑operations. (github.com)
