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+# Hyperlane
+
+## Technology
+
+- [Hyperlane Warp Routes](https://docs.hyperlane.xyz/docs/reference/applications/warp-routes)
+- [Hyperlane Yield Routes](https://docs.hyperlane.xyz/docs/guides/warp-routes/evm/deploy-yield-routes)
+
+## Compatibility
+
+### Default HypERC20
+
+- Supported VMs: EVM, Solana SVM and Cosmos VM
+- Supported chains: [List](https://www.hyperlane.xyz/expansion)
+- Custom Token: TBD
+- Native Converter: TBD
+- Bridged USDC Standard: TBD
+- Wrapped Token: Available (HypERC20 Token)
+- Manual Converter: TBD
+
+## Process
+
+1. Create yield route configuration using Hyperlane CLI with `hyperlane warp init`.
+   - Select `collateralVault` type for Primary Chain (origin).
+   - Select `synthetic` type for Secondary Chains (destinations).
+   - Configure Interchain Security Module (ISM) - recommend using `messageIdMultisigIsm`
+   - Set owner address for all chains (will control ProxyAdmin and contract upgrades).
+2. Deploy yield route using Hyperlane CLI with `hyperlane warp deploy`.
+   - Deploys `HypERC20CollateralVaultDeposit` on Primary Chain.
+   - Deploys `HypERC20` (synthetic tokens) on all Secondary Chains.
+   - Configures ISM and establishes cross-chain connections.
+3. Verify deployment with `hyperlane warp read --symbol <SYMBOL>`.
+4. Test bridge transaction with `hyperlane warp send --relay`.
+5. (Optional) Upgrade `HypERC20` to custom vbToken implementation on Secondary Chains for enhanced features.
+
+## Architecture
+
+### Primary Chain (Origin)
+
+- **Contract**: `HypERC20CollateralVaultDeposit`
+- **Type**: `collateralVault`
+- **Function**: Locks ERC-4626 vault shares and dispatches messages via Hyperlane Mailbox
+
+### Secondary Chains (Destination)
+
+- **Contract**: `HypERC20` (Synthetic)
+- **Type**: `synthetic`
+- **Function**: Mints/burns synthetic tokens based on cross-chain messages
+
+### Message Flow
+
+![alt text](image.png)
+```
+[User] → [HypERC20CollateralVaultDeposit] → [Vault Deposit] → [Mailbox] → [ISM] → [Relayer] ↓
+[Recipient] ← [HypERC20 (mint)] ← [Mailbox] ← [ISM] ← [Destination Chain]
+```
+
+## Security Considerations
+
+> [!WARNING]
+> The Hyperlane Mailbox contract has minting rights for synthetic tokens on destination chains. A Mailbox compromise would affect all tokens using that Mailbox instance.
+
+> [!TIP]
+> Using `collateralVault` type limits exposure: only tokens deposited through the `HypERC20CollateralVaultDeposit` contract would be affected, not the entire vault balance.
+
+## Configuration
+
+### Interchain Security Modules (ISM)
+
+Recommended ISM types for production:
+
+- **messageIdMultisigIsm**: Multisig validators verify message IDs
+- **merkleRootMultisigIsm**: Multisig validators verify Merkle roots
+- **staticAggregationIsm**: Combines multiple ISM types (e.g., trusted relayer + multisig)
+
+Example configuration:
+
+```yaml
+interchainSecurityModule:
+  type: messageIdMultisigIsm
+  validators:
+    - "0x..." # Validator address 1
+    - "0x..." # Validator address 2
+  threshold: 2 # Number of signatures required
+```
+
+### Ownership
+
+The `owner` address specified during deployment controls:
+
+- ProxyAdmin (can upgrade contracts)
+- Contract configuration (ISM updates, etc.)
+
+## Upgrade Path
+
+The recommended approach is to use the standard HypERC20 contracts deployed by Hyperlane.
+
+**Pros**:
+- Battle-tested Hyperlane contracts
+- No additional audits required
+- Simpler maintenance
+
+**Cons**:
+- Less flexibility for custom features
+- Standard Hyperlane UX/functionality only
+
+## Reference
+
+- Hyperlane Docs: [Warp Routes](https://docs.hyperlane.xyz/docs/reference/applications/warp-routes)
+- Hyperlane Docs: [Yield Routes Guide](https://docs.hyperlane.xyz/docs/guides/warp-routes/evm/deploy-yield-routes)
+- Hyperlane Docs: [ISM Configuration](https://docs.hyperlane.xyz/docs/reference/ISM/specify-your-ISM)
+- GitHub: [hyperlane-xyz/hyperlane-monorepo](https://github.com/hyperlane-xyz/hyperlane-monorepo)
+- Explorer: [Hyperlane Message Explorer](https://explorer.hyperlane.xyz/)
+- Integration Guide: [`HYPERLANE_INTEGRATION.md`](../../../../HYPERLANE_INTEGRATION.md)
+
+## Useful Commands
+
+```bash
+# Initialize yield route configuration
+hyperlane warp init -o yield-route-config.yaml
+
+# Deploy yield route
+hyperlane warp deploy --warp yield-route-config.yaml
+
+# Read deployed configuration
+hyperlane warp read --symbol <SYMBOL>
+
+# Send tokens with relay
+hyperlane warp send --relay \
+  --warp <config-path> \
+  --origin <chain> \
+  --destination <chain>
+
+# Update ISM configuration
+hyperlane warp apply \
+  --warp <deploy-config> \
+  --config <warp-config>
+
+# Check message status
+# Visit: https://explorer.hyperlane.xyz/message/<message-id>
+```
+
+## Testnet Deployment Example
+
+**Route**: Sepolia → Optimism Sepolia & Polygon Amoy
+
+| Chain | Contract Type | Address |
+|-------|--------------|---------|
+| Sepolia | HypERC20CollateralVaultDeposit | `0x5C0edadd0b674E932dF98d1Bb0f4aec41494A0EA` |
+| Optimism Sepolia | HypERC20 (Synthetic) | `0xD497c6AF38fD6AcC916759B7C956210De27DE61B` |
+| Polygon Amoy | HypERC20 (Synthetic) | `0xf7CC62aD0D6A439469E4Ce7CFBA510A1A30b1fA0` |
+
+**Vault**: `0xb62Ba0719527701309339a175dDe3CBF1770dd38` (Sepolia)
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