Review: Rate Provider from Issue #741

rate-providers/USPYieldOptimized StablecoinRateProviderReview35b8.md

@@ -0,0 +1,31 @@
+
+# Rate Provider: USPYield Optimized Stablecoin rate provider
+
+## Details
+This report was autogenerated on 02/07/2026.
+
+- Deployed at:
+    - [Ethereum:0x9Ba7cB68fA96D022E20C3Dd2DD26b7Bf3e42fC1b](https://etherscan.io/address/0x9Ba7cB68fA96D022E20C3Dd2DD26b7Bf3e42fC1b)
+- Audit report(s):
+    - [Audits](Audited by Omega Security,0xMacro,Hats Finance,and Audit33 — https://docs.piku.co/piku/piku/security-and-risks/audits)
+
+## Context
+USP is Piku Finance's yield-optimized stablecoin: backed ~1:1 by USD-denominated assets at issuance and appreciating in value as yield strategies accrue (~90% of yield is routed back into USP's backing pool rather than distributed). The rate provider was deployed via Balancer's ChainlinkRateProviderFactory (0x1311Fbc9F60359639174c1e7cC2032DbDb5Cc4d1) wrapping a Chainlink-interface NAV oracle "USP / USD" (0xb52eb13139905Eb11c472100a1E86cB1961b8EF3,6 decimals). That feed is a bounded wrapper enforcing MIN_ANSWER=0.90 / MAX_ANSWER=5.00 USD over an inner source oracle (0x433471901bA1A8BDE764E8421790C7D9bAB33552). getRate() currently returns ~1.1078e18. Docs: https://docs.piku.co
+
+## Review Checklist: Bare Minimum Compatibility
+Each of the items below represents an absolute requirement for the Rate Provider. If any of these is unchecked, the Rate Provider is unfit to use.
+
+- [x] Implements the [`IRateProvider`](https://github.com/balancer/balancer-v2-monorepo/blob/bc3b3fee6e13e01d2efe610ed8118fdb74dfc1f2/pkg/interfaces/contracts/pool-utils/IRateProvider.sol) interface.
+- [x] `getRate` returns an 18-decimal fixed point number (i.e., 1 == 1e18) regardless of underlying token decimals.
+
+### Administrative Privileges
+- [ ] The Rate Provider is upgradeable** (e.g., via a proxy architecture).
+- [x] Other contracts which are part of the `getRate` callchain are upgradeable**. You can find more information
+   about the involved contracts in this [tenderly simulation](https://www.tdly.co/shared/simulation/c130444b-846c-43cd-b07e-f4bf6e37cac2)
+
+## Conclusion
+**Summary judgment: USABLE**
+
+** upgradeable in this context means that:
+- The contract is a proxy contract with an implementation sourced from Etherscan and the proxy emitted an "Upgraded" event.
+

rate-providers/registry.json

@@ -2820,6 +2820,20 @@
           "implementationReviewed": "0x90fd843c68db38e2de0618acbb39341cba5a5abd"
         }
       ]
+    },
+    "0x9Ba7cB68fA96D022E20C3Dd2DD26b7Bf3e42fC1b": {
+      "asset": "0x098697bA3Fee4eA76294C5d6A466a4e3b3E95FE6",
+      "name": "USPYieldOptimized StablecoinRateProvider.md",
+      "summary": "safe",
+      "review": "./USPYieldOptimized StablecoinRateProviderReview35b8.md",
+      "warnings": [],
+      "factory": "",
+      "upgradeableComponents": [
+        {
+          "entrypoint": "0x433471901ba1a8bde764e8421790c7d9bab33552",
+          "implementationReviewed": "0x62c49b6138d9926fcf86bb15b66193fcc9004470"
+        }
+      ]
     }
   },
   "fantom": {},