79 lines
2.4 KiB
Markdown
79 lines
2.4 KiB
Markdown
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# Chain 2138 – Wallet & SDK Config (Defi Oracle Meta Testnet)
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**Last Updated:** 2026-03-27
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**Document Version:** 1.0
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**Status:** Active Documentation
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---
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**Purpose:** Wallet and SDK settings for **Defi Oracle Meta Testnet** (chain ID **2138**).
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**RPC (public, chainlist):** `https://rpc.public-2138.defi-oracle.io`
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**WS (chainlist):** `wss://rpc.public-2138.defi-oracle.io`
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**Explorer (chainlist):** `https://public-2138.defi-oracle.io`
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**Chain ID:** 2138 (`0x85a`)
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**CAIP-2:** `eip155:2138`
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Use LAN or staging RPC in place of the public URLs when testing privately.
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---
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## 1. MetaMask (custom network)
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| Field | Value |
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|-------|--------|
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| **Network name** | Defi Oracle Meta Testnet |
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| **RPC URL** | `https://rpc.public-2138.defi-oracle.io` (or your node) |
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| **Chain ID** | `2138` |
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| **Currency symbol** | tETH |
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| **Block explorer** | `https://public-2138.defi-oracle.io` |
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**JSON** (programmatic add): `docs/04-configuration/metamask/METAMASK_NETWORK_CONFIG_2138.json`.
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---
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## 2. ethers.js (v6 example)
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```javascript
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const chain2138Testnet = {
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chainId: 2138,
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name: "Defi Oracle Meta Testnet",
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nativeCurrency: { name: "testEther", symbol: "tETH", decimals: 18 },
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rpcUrls: {
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default: { http: ["https://rpc.public-2138.defi-oracle.io"] },
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},
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blockExplorers: {
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default: { name: "Quorum Explorer", url: "https://public-2138.defi-oracle.io" },
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},
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};
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import { JsonRpcProvider } from "ethers";
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const provider = new JsonRpcProvider("https://rpc.public-2138.defi-oracle.io");
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const chainId = await provider.getNetwork().then((n) => Number(n.chainId)); // 2138
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```
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---
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## 3. Frontend DApp (Vite)
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- Enable the chain in Wagmi: `VITE_ENABLE_CHAIN2138=true` or `1`
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- Optional overrides: `VITE_RPC_URL_2138`, `VITE_EXPLORER_URL_2138`
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- Trustless bridge L2 side: `VITE_TRUSTLESS_L2_CHAIN_ID=2138` plus lockbox/token env vars (see `smom-dbis-138/frontend-dapp/.env.example`)
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---
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## 4. Quick verification
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```bash
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curl -s -X POST https://rpc.public-2138.defi-oracle.io -H "Content-Type: application/json" \
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-d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'
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# Expected: result "0x85a"
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```
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---
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## 5. References
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- **Testnet runbook**: `docs/testnet/DEFI_ORACLE_META_TESTNET_2138_RUNBOOK.md`
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- **Mainnet (138) wallet doc**: `docs/04-configuration/CHAIN138_WALLET_CONFIG_VALIDATION.md`
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- **Chain list (this repo)**: `pr-workspace/chains/_data/chains/eip155-2138.json`
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