FAQ
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Cypress is the Klaytn mainnet, Baobab is a testnet. Below is information relating to each network.
Cypress mainnet:
EN download : Choose the Cypress package from the .
Klaytnscope :
Klaytn Wallet :
Baobab testnet:
No official browser wallets at the moment.
Kaikas, a browser extension wallet of Klaytn will be released in 1H 2020.
Common use cases are as follows.
The account owner wants to change the key for security reasons.
The account has a weighted-multisig or a role-based key that allows having multiple key pairs to control the account.
EN download : Choose the Baobab package from the .
Klaytnscope :
Klaytn Wallet :
Baobab Faucet :
Official Klaytn SDKs are provided in JavaScript and Java. See and . Community contributions are always welcome in providing in other languages.
To learn about how to build BApp using Klaytn SDK, see .
Also, check the porting guidelines and . Because the syntactic of caver-js and caver-java are very similar to web3.js and web3j, porting should be minimal and very straightforward. But, no, you can not use web3.js or web3j to make a request against Klaytn.
Yes and No. Endpoint node validates the blocks and exposes RPC APIs to the outer world. EN is always needed for your application to interact with the Klaytn network. For those who simply want to try Klaytn APIs, you can try . KAS provides Klaytn Node API service that exposes RPC APIs of Klaytn networks (both Baobab and Cypress) as well as other useful API services. Note that KAS serves free API requests after user registration. For pricing plans, please refer to .
First, check if your HW specification meets the .
Check the . Klaytn publishes the chain data every day. Chain data is a database snapshot that stores all blocks generated since the genesis. Download the latest chain data for the fast sync.
Yes. Klaytn supports Solidity as a smart contract language. and written in Solidity for Etherem can be deployed and executed on Klaytn.
Further Klaytn-specific token standards can be defined. Follow the and join the discussion.
Yes. Truffle can be used in developing smart contracts on Klaytn with . See and follow the configuration guideline.
If you are new to Truffle, see and to get a rough idea on what you can do with Truffle.
In Klaytn, .
Fee-payer accounts usually have a . In most cases, the account address is not derived from the RoleFeePayer key.
Check to get a complete working code of value transfer.
See the for deploying a contract with fee-delegation. Note that you can not use Truffle for the contract deployment with fee-delegation.
gives a good explanation about two different ways of collecting signatures. Relevant caver-js APIs are as follows. Take a look at the code examples in the API description.