This crosschain minting strategy allows users to mint rUSD stablecoin on Ethereum and access positions on Katana for enhanced yield opportunities. Route Mechanics: This bundle facilitates stablecoin diversification across chains through a the following process:
  • Convert USDC to rUSD on Ethereum using Enso’s routing aggregation
  • Bridge the newly minted rUSD from Ethereum to Katana chain via Stargate
  • Check rUSD balance on Katana after bridge completion
  • Swap rUSD for vault-bridged USDC (vbUSDC) on Katana for enhanced yield
The strategy enables users to access Katana’s DeFi ecosystem while starting with familiar USDC on Ethereum and relying on Reservoir Stablecoin. 
const KATANA_ID = 747474;
const ETHEREUM_ID = 1;

// Common addresses
const WALLET_ADDRESS = "0x93621DCA56fE26Cdee86e4F6B18E116e9758Ff11"; // User wallet

// Token addresses
const rUSD_ETHEREUM = "0x09D4214C03D01F49544C0448DBE3A27f768F2b34";
const rUSD_KATANA = "0x09D4214C03D01F49544C0448DBE3A27f768F2b34";
const USDC_ETHEREUM = "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48";
const VBUSDC_KATANA = "0x203A662b0BD271A6ed5a60EdFbd04bFce608FD36";

const client = new EnsoClient({
  apiKey: process.env.ENSO_API_KEY!,
});

// LayerZero pool addresses
const wsrEthToKatanaPools = await client.getLayerZeroPool({
  chainId: ETHEREUM_ID,
  token: rUSD_ETHEREUM,
  destinationChainId: KATANA_ID,
  destinationToken: rUSD_KATANA,
});

// LayerZero pool addresses
const rUsdKatanaToEthRUsd = await client.getLayerZeroPool({
  chainId: ETHEREUM_ID,
  token: rUSD_ETHEREUM,
  destinationChainId: KATANA_ID,
  destinationToken: rUSD_KATANA,
});

console.log(JSON.stringify(wsrEthToKatanaPools), !wsrEthToKatanaPools.length);

if (!wsrEthToKatanaPools.length) {
  throw new Error("Required pools not available");
}

const bundle = await client.getBundleData(
  {
    chainId: ETHEREUM_ID,
    fromAddress: WALLET_ADDRESS,
    spender: WALLET_ADDRESS,
    routingStrategy: "router",
  },
  [
    // mint wsrUSD on Ethereum
    {
      protocol: "enso",
      action: "route",
      args: {
        amountIn: parseUnits("1000", 6).toString(), // 1000 USDC
        tokenIn: USDC_ETHEREUM,
        receiver: WALLET_ADDRESS,
        tokenOut: rUSD_ETHEREUM,
      },
    },

    {
      protocol: "stargate",
      action: "bridge",
      args: {
        primaryAddress: wsrEthToKatanaPools[0].pool as Address,
        destinationChainId: KATANA_ID,
        tokenIn: rUSD_ETHEREUM,
        amountIn: { useOutputOfCallAt: 0 },
        receiver: WALLET_ADDRESS,
        callback: [
          // Step 1: Check wsrUSD balance on Katana after bridge
          {
            protocol: "enso",
            action: "balance",
            args: {
              token: rUSD_KATANA,
            },
          },
          // Step 2: Swap wsrUSD to vbUSDC
          {
            protocol: "enso",
            action: "route",
            args: {
              tokenIn: rUSD_KATANA,
              tokenOut: VBUSDC_KATANA,
              amountIn: { useOutputOfCallAt: 0 }, // Use wsrUSD_KATANA from balance check
              receiver: WALLET_ADDRESS,
            },
          },
        ],
      },
    },
  ]
);
Important Considerations
  • Bridge operations execute sequentially - Katana operations only proceed after successful Ethereum minting
  • LayerZero bridge fees apply for transfers between Ethereum and Katana
  • Gas costs for both chains are paid from the originating Ethereum transaction

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Resources:

Updated