feat: add crossbell resolver

[Atlasoin]

No description provided.

[bonustrack]

@AtlasQuan Thanks for the PR! I wasn't aware about Crossbell, do you know what is the coverage, or how many addresses have their avatar set on Crossbell?

[Atlasoin]

Hi, Crossbell hasn't been launched for a long time. Each character is an NFT, so the token holder count in the scan is exactly the number of addresses: https://scan.crossbell.io/token/0xa6f969045641Cf486a747A2688F3a5A6d43cd0D8/token-holders. As you can see, currently there are 31034 addresses :P

[bonustrack]

@AtlasQuan Ok interesting, so Crossbell is also a chain, do you know how many of these 31k addresses have activity in mainnet? When adding a new resolver we need to make sure there is enough coverage, cuz it will increase loading time of the avatar on first load.

[Atlasoin]

I just wrote a script to calculate how many Crossbell users are active (having at least 1 transaction) on mainnet. The result is 25149 out of 31034. Plus, Crossbell is still at a very early dev stage, meaning there might be more users joining in this ecosystem in the future. Let me know what you think.

The snippet is below.

import ethers from "ethers";

const provider = new ethers.providers.WebSocketProvider(/* ws uri */);

const fetchAddresses = async (
	pageToken = "/token/0xa6f969045641cf486a747a2688f3a5a6d43cd0d8/token-holders?"
) => {
	return fetch(`https://scan.crossbell.io/${pageToken}&type=JSON`)
		.then((res) => res.json())
		.then((res) => {
			res.items = res.items.map((item) => item.match(/0x\w{40}/)[0]);
			return res;
		});
};

let result = 0;
let pageToken;
const main = async () => {
	while (true) {
		const { items, next_page_path } = await fetchAddresses(pageToken);

		await Promise.all(
			items.map(async (address) => {
				const count = await provider.getTransactionCount(address);

				console.log({ count });
				if (count > 0) {
					result++;
				}
			})
		);

		console.log({ result, next_page_path });

		if (!next_page_path) {
			break;
		}

		pageToken = next_page_path;
	}

	console.log({ result });
};

main();

[DIYgod]

Hi, is there any progress on this pr? We are using stamp on RSS3, but have been missing this resolver that we want.