feat: add claimedAmount

docs/staking/contract-integration.md

@@ -0,0 +1,32 @@
+# Contract Integration Notes
+
+## 1. Contract
+
+- **Address**: `0x04c74e8a11c669acfb7ee01012bbf5cf1e57a10d`
+
+---
+
+## 2. Function:
+
+### 2.1 `claimedAmount`
+
+Query how much reward has already been claimed by a specific owner.
+
+**Conceptual signature:**
+
+```ts
+import {keccak256, toUtf8Bytes} from 'ethers';
+
+// User wallet address (example)
+const ADDRESS = '0x3a951869775c5d6c2d295e74b79406836da3d956';
+
+// 1) Protocol type identifier
+const protocolTypeIdentifier = keccak256(toUtf8Bytes('symbiotic'));
+
+// 2) Digest used in contract call
+const ownerAddressDigest = keccak256(
+    toUtf8Bytes(protocolTypeIdentifier + ADDRESS.toLowerCase()),
+);
+
+// rewardsContract.claimedAmount(ownerAddressDigest);
+```