Ultra.io Docs

Ultra → EVM Transfer ​

Transfer UOS tokens from Ultra blockchain to Ethereum network.

Bridge URL: https://bridge.testnet.ultra.io/

Transfer Process ​

  1. Submit - Send bridge transaction on Ultra
  2. Process - Validators confirm the transaction
  3. Claim - Complete transfer on Ethereum (requires "Move Assets" step)

Prerequisites ​

  • ✅ Both wallets connected to correct networks
  • ✅ UOS tokens in Ultra wallet
  • ✅ Sepolia ETH in EVM wallet for gas fees

Step-by-Step Transfer ​

1. Configure Transfer ​

  • Verify connections: Ultra Testnet + Ethereum Sepolia
  • Select UOS token in dropdown
  • Enter amount or use "All" button
  • Set destination: Use connected EVM address or enter manually
  • Review transaction details

Ultra to EVM Setup

2. Submit Transaction ​

  • Click "Move Assets"
  • Approve in Ultra wallet
  • Wait for Ultra network confirmation

Ultra to EVM Transaction Confirmation

3. Monitor Progress ​

Transaction progresses through stages:

  1. Pending → Submitted to Ultra
  2. Finding Request → Processing
  3. Waiting Attestations → Validator confirmation
  4. Ready to Claim → Ready for EVM completion

Ultra to EVM Transfer Status

4. Complete Transfer (Critical) ​

⚠️ Important: You must complete the claiming step:

  • Click "Move Assets" button when available
  • EVM wallet opens automatically
  • Review Sepolia ETH gas fees (only fee in the process) and confirm
  • Wait for confirmation on Ethereum network

Ultra to EVM Move Assets

Ultra to EVM EVM Wallet Confirmation

5. Verify Success ​

  • Success message displayed
  • Transaction hash provided
  • Tokens arrive in EVM wallet within ~15 minutes (depending on EVM network congestion)

Ultra to EVM Success

Add UOS Token to Wallet:

  • Contract: 0x3AC63AA2c077D676Fa24a7BCE05b05A2F81237FE
  • Symbol: UOS
  • Decimals: 4

Important Notes ​

Two-Step Process

  • Ultra→EVM requires manual completion with "Move Assets" button
  • Keep browser open during entire transfer
  • EVM wallet confirmation required at the end

Gas Fees Required

  • No fees on Ultra network (Ultra has no transaction fees)
  • Sepolia ETH for final EVM confirmation (only fee in the process)
  • High fees? You can wait for lower EVM congestion and resume the transfer later

If Something Goes Wrong

Next Steps ​

  1. EVM→Ultra Transfer - Transfer tokens back to Ultra
  2. Resume Transfers - Continue interrupted transfers
  3. Troubleshooting - Fix common issues

Need Help? ​