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Is Raiden network only suited for ERC20 token transfers? Does / will it support other token standards (e.g., ERC223) or simple ETH payments?

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Yes, currently only ERC20 tokens. For one thing, it uses the approve()/transferFrom() mechanism that ERC20 provides, but ERC223 doesn't.

However, other non-ERC20 tokens and Ether itself can fairly simply be wrapped into ERC20-compliant tokens using smart contracts (E.g. you send the contract some Ether; you get back some ERC20 tokens that you can convert back to Ether at any time via the same contract at a 1:1 rate). So this limitation is not as severe as it may seem initially. This process could even be automated by the Raiden client or netting contract.

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  • is there any super simple ERC20 token contract that mimics ETH 1 to 1 already in main net? I've heard about WETH and PETH but... – knocte Feb 22 '18 at 4:35

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