Add zKyoto (Astar zkEVM testnet)

[Maar-io]

Adding a new chain to the Explorer To get a new chain added to the Explorer, you will need to submit the following:

1. JSON-RPC spec for Wallets (only if one doesn't already exist). For more information, please review the Ethereum JSON-RPC API docs. ethereum-rpc

2. Write a CASA namespace spec if not already available for this namespace. ethereum

3. namespaces: eip:155

4. chains: Testnet eip155: 6038361

5. RPC endpoints https://rpc.startale.com/zkyoto https://rpc.zkyoto.gelato.digital

6. SLIP-0044 coin type: 60

Additional context This is testnet for Astar zkEVM network, built on Polygon zkEVM CDK. This testnet replaces zKatana testnet. zKatana is deprecated since April 1st 2024.

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Please note:

Registering a chain with the Explorer does not impact or improve the ability for wallets and dapps to support your chain. It is simply a way for users to discover wallets and dapps that support your chain by:

• Browsing the Chains List
• Filtering results programmatically via the Explorer API

It is still up to wallets and dapps to provide concrete support for your chain once it is listed as part of the Explorer.

• [x] I have read and understood the above clarification