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What is t3rn?

t3rn is a Modular Cross-Chain Execution Protocol designed to enable trustless, atomic execution of smart contracts across multiple blockchains. Instead of focusing only on messaging or asset bridging, t3rn introduces a new execution layer that coordinates transactions between chains, ensuring that complex multi-step operations either fully succeed or fully revert—eliminating cross-chain execution risk. Built as a Substrate-based protocol within the Polkadot ecosystem, t3rn acts as a universal execution hub that connects EVM and non-EVM networks. It allows developers to compose interoperable smart contracts that trigger actions across chains like Ethereum, BNB Chain, Arbitrum, Optimism, and other supported ecosystems—without relying on centralized relayers or fragmented liquidity models. Founded to solve the problem of unreliable cross-chain workflows, t3rn introduces Executors—independent actors who compete to fulfill cross-chain transactions. Executors front liquidity and execution costs, and they are only rewarded if the entire multi-chain operation succeeds atomically. This creates a market-driven execution model that aligns incentives while preserving decentralization. Unlike traditional bridges or messaging protocols, t3rn provides: • Atomic cross-chain execution (all-or-nothing settlement)
• A decentralized executor marketplace
• Built-in rollback and fail-safe mechanisms
• Composable multi-chain smart contracts
• Economic guarantees backed by staking and slashing The protocol is powered by its native token $TRN, which is used for staking, securing the network, incentivizing Executors, governance, and protocol-level economic coordination. In essence, t3rn transforms cross-chain interactions from simple asset transfers into programmable, economically secured multi-chain execution—unlocking reliable interoperability for DeFi, modular rollups, and next-generation decentralized applications.

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User Guide (t3rn)

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Prerequisites

Before getting started, make sure you have completed the following:
  • Burner Wallet (Secondary Wallet)
    A newly created wallet (MetaMask, Rabby, or Keplr) used exclusively for running the node.
  • Gas Tokens (ETH)
    ETH on the Arbitrum network to pay transaction fees.
  • Liquidity Assets (USDC)
    USDC (or another supported asset) on Arbitrum to fill bridging/arbitrage orders.
  • Cripto Host Account
    Active access to your dashboard at:
    👉 https://cripto.host/
⚠️ Important: The Burner Wallet Concept For security reasons, NEVER use your main wallet (where you store your savings or long-term holdings) to run a node. You must create a separate, dedicated wallet only for node operations. Since the setup requires your private key, using a burner wallet isolates operational risk strictly to the funds allocated for the node.

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Step-by-Step Setup

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1. Create Your Operational Wallet (Burner Wallet)

  1. Open your wallet extension (e.g., MetaMask).
  2. Click the profile icon.
  3. Select “Add Account” or “Create New Account.”
  4. Name it something like:
    t3rn Executor Node
  5. Copy the public wallet address.
You will use this address during setup.

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2. Fund the Wallet

Your node requires two types of balance on the Arbitrum network:

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Gas Fees (ETH)

Send approximately: 0.01 – 0.05 ETH (Arbitrum network) to your Burner Wallet. This covers transaction fees.

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Operational Liquidity (USDC)

Send USDC (Arbitrum network) to your Burner Wallet. This liquidity will be used by the node to execute bridge/arbitrage operations.
💡 Tip: The higher your USDC balance, the larger the orders your node can execute.

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3. Deploy Your Node on Cripto Host

  1. Log into your Cripto Host dashboard.
  2. Select the t3rn Executor plan.
  3. During configuration, fill in the required fields:

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Wallet Address

Paste the public address of your Burner Wallet.

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Private Key

Enter the private key of your Burner Wallet.
🔐 How to Export Private Key in MetaMask
  1. Select the account: t3rn Executor Node
  2. Click the three dots (...)
  3. Select Account Details
  4. Click Show Private Key
  5. Enter your password
  6. Copy the private key
⚠️ Never share this key publicly.

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4. Finalization

After confirming payment and configuration:
  • Cripto Host automatically provisions the server
  • Installs all t3rn dependencies
  • Configures the executor
  • Starts the service using your credentials
Your node will begin operating automatically.

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What Happens Next?

Once deployed:
  • ✅ Automatic Execution
    Your node scans for bridge/arbitrage opportunities on the t3rn network.
  • ✅ Rewards
    When an order is completed:
    • Your capital is returned to your wallet
    • A service fee (profit) is added
  • ✅ 24/7 Monitoring
    Cripto Host ensures ≥99% uptime.
  • ✅ Performance Tracking
    You can monitor your wallet balance directly via Arbiscan.

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Useful Links