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How to Bridge

Relevant Links
VoidAI Bridge (App) Contract Addresses

1. What the Bridge Does

Section titled “1. What the Bridge Does”
  • TAO and every subnet’s Alpha can be moved off Bittensor, wrapped as ERC20 tokens, and used on Ethereum.
  • The bridge is non‑custodial — tokens are programmatically locked on one chain and then minted or unlocked on the destination chain in the same atomic transaction.

2. What You Need Before You Start

Section titled “2. What You Need Before You Start”
  1. MetaMask or WalletConnect for Ethereum (browser extension or mobile).
  2. Bittensor wallet/hotkey for on‑chain signing.
  3. Enough token balance plus gas for both networks.
  4. Staked TAO on root subnet. If you dont have any staked TAO token, platform provides a support to stake these and then perform the bridge.
  5. Know which validator currently holds your stake and that validator’s transferStake minimum (the smallest amount that can be re‑delegated).

3. Bridging TAO → wTAO (Bittensor → Ethereum)

Section titled “3. Bridging TAO → wTAO (Bittensor → Ethereum)”
  1. Open https://app.voidai.com/ and connect your Bittensor and Ethereum wallets (MetaMask or WalletConnect).
  2. Choose Direction: “Bittensor → Ethereum”, Token: TAO.
  3. Enter the TAO amount and your Ethereum address; review the auto‑calculated bridge + gas fees.
  4. Click Bridge, sign in your Bittensor wallet, wait ~12–15 seconds for chain confirmation, and allow ~5 minutes for wTAO to appear in your selected Ethereum wallet. You might need to add tokens into the wallet to view the balance.
  5. Track progress in Recent Transactions or via the provided block‑explorer link.

4. Bridging Alpha → wALPHA (Bittensor → Ethereum)

Section titled “4. Bridging Alpha → wALPHA (Bittensor → Ethereum)”

Extra validator logic applies; read carefully.

  1. Use the same site and connect the same wallets as above.
  2. Select the subnet that issued your Alpha, then choose a destination validator from the dropdown (default is the VoidAI validator).
  3. Check transfer stake: ensure the amount you want to move meets or exceeds the minimum required by your current validator.
    • Example: if Validator B only transfers ≥ 50 α and you try to bridge 20 α, the transaction will revert.
  4. If needed, re‑delegate your Alpha to a validator with a lower minimum, or bridge a larger amount.
  5. After validator checks pass, confirm, sign, and monitor progress as with TAO.

5. Reverse Bridging (Ethereum → Bittensor)

Section titled “5. Reverse Bridging (Ethereum → Bittensor)”
  • Choose “Ethereum → Bittensor”, pick wTAO or wALPHA, fill in your Bittensor address, and sign with Ethereum wallets (MetaMask or WalletConnect).
  • For Alpha, also specify the target subnet and chosen validator on Bittensor (select a reputable one).
  • Tokens will be burned on Ethereum and then unlocked/re‑delegated on Bittensor. Allow up to ~10 minutes in total.

6. Security & Best Practices

Section titled “6. Security & Best Practices”
  • Validator due diligence: high uptime, positive community reputation, adequate self‑stake.
  • Double‑check addresses on both chains every time — no edits are allowed once signed.
  • Transfer limits: be aware of minimums/maximums set by the protocol and by your validator.
  • Gas buffer: maintain a small reserve of TAO and SOL to account for fluctuating network fees.

7. Troubleshooting Quick Hits

Section titled “7. Troubleshooting Quick Hits”
  • Wallet won’t connect: refresh page or restart the browser; ensure extensions are unlocked.
  • Transaction stuck: wait one confirmation cycle. If there’s no update after 15 minutes, open the explorer link or ping support.
  • Alpha bridge fails instantly: amount is below your validator’s transferStake minimum — re‑delegate or bridge more.

See Also

Section titled “See Also”