kovan-testnet / kips Goto Github PK

does anyone here knows why I cant switch to kovan network with this code?
const switchKovanNetwork = async () => {
try {
await window.ethereum.request({
method: "wallet_switchEthereumChain",
params: [{ chainId: "0x42" }],
});
} catch (switchError) {}
}

I'm researching a optimal way of creating a faucet for GitHub users with Oraclize.

I think a easy way to do it is to user register account using a gist file containing his address.

oraclize_query("URL", strConcat("https://gist.githubusercontent.com/",_github_user,"/",_gistid,"/raw/"));

Register could check in API what is the age of the user

With a registered account, he can claim free KETH every day, based in his last page(s) IssueCommentEvent

oraclize_query("URL", strConcat("json(https://api.github.com/users/",_github_user,"/events/public?page=1).$[?(@.type="IssueCommentEvent")].[repo][name]"));

?(@.type="IssueCommentEvent") would filter only Issues comments, this is important to avoid star/unstar event.
See other events type: https://developer.github.com/v3/activity/events/types/

We could interate over an array this response and check how many events are in "known" repositories, previously registered by faucet owner.

For each known repository in this list, user would earn one point:

• 0-5: 1 KETH
• 5-10: 5 KETH
• 10-20: 10 KETH
• 20-30: 20 KETH

There is the option to check user organizations in https://api.github.com/users/$user/orgs and search for known public organizations, such as ethereum, ethcore, etc, this would give the user like 100 KETH.

Also, adding a middle-man to connect with API is a option to check more details and just answer the points to the contract.
I think is better to don't use a middle-man if possible, and try to relay only on oraclize, but then the options are limited and gas fees might be high.

Free keth please 0x0Ed4c920D40cba373c070c9e3B3Abb8ea32B5a19

Some ideas

• Public Faucet w/ CAPTCHA (for beta testers who are not devs, for making transactions) -> 1 KETH, rate limited to 60 requests per hour (w/ queue)
• Github OAuth (with approval from validators) -> 5 KETH / Day

Motivation:
To limit the potential damage from a hack to one of the authority nodes, check for the account balance of the node and if >= 10000, sweep 5000 to another account.

Ive developed an easy dontaion web app using Kovan. Lastly, ive added chain check, allowing only Kovan. When someone is on another chain, i just suggest to change chain with:
window.ethereum.request({
method: 'wallet_switchEthereumChain',
params: [{ chainId: '0x2A' }],
});
Here comes the problem: it works, but the logo on MetaMask is a question point, but it is supposed to be full purple.
Everything works great and it does not even ask to add a new chain, it looks like theres two linked Kovan testnet: they are two, but work as one.
Ive tried with couple other chains and they dont have the same issue.

(Here working test to check on your own: http://nonnopinto.altervista.org/)