Build on Cube Chain.

// Resolve a Cubeline to its wallet with ethers v6
import { JsonRpcProvider, namehash, Contract } from "ethers";

const chain = new JsonRpcProvider("https://cubeapp.org/evm", 28282);
const registry = new Contract("0x5e5540a6A556996BD26a2391EfE40a1e94aD3e43",
  ["function resolver(bytes32) view returns (address)"], chain);

const node = namehash("28767087340.cubeline");
const resolver = new Contract(await registry.resolver(node), [
  "function addr(bytes32) view returns (address)",
  "function text(bytes32,string) view returns (string)",
], chain);

console.log(await resolver.addr(node));            // wallet
console.log(await resolver.text(node, "session")); // messaging ID

// Read a Naira balance (2 decimals)
import { JsonRpcProvider, Contract, formatUnits } from "ethers";

const chain = new JsonRpcProvider("https://cubeapp.org/evm", 28282);
const ngn = new Contract("0xBf321cB3A6Fd5c0676a0617c899572Ab31AfF13c",
  ["function balanceOf(address) view returns (uint256)"], chain);

const raw = await ngn.balanceOf(wallet);
console.log("₦" + formatUnits(raw, 2));

# Latest block over JSON-RPC
curl -s https://cubeapp.org/evm -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}'

# A Cubeline's wallet, over HTTPS
curl -s https://cubeapp.org/cubeline/evm/28767087340
# → {"evm_address":"0x…"}