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defiQUG dbd517b279 Sync workspace: config, docs, scripts, CI, operator rules, and submodule pointers.

- Update dbis_core, cross-chain-pmm-lps, explorer-monorepo, metamask-integration, pr-workspace/chains
- Omit embedded publish git dirs and empty placeholders from index

Made-with: Cursor

2026-04-12 06:12:20 -07:00

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Chain 138 – Wallet & SDK Config Validation

Last Updated: 2026-04-02
Document Version: 1.0
Status: Active Documentation

Purpose: Validated configs for MetaMask, ethers.js, and Ledger (Chain 138 – Defi Oracle Meta Mainnet).
RPC: https://rpc-http-pub.d-bis.org, https://rpc.d-bis.org, https://rpc2.d-bis.org, https://rpc.public-0138.defi-oracle.io, https://rpc.defi-oracle.io
WS: wss://rpc-ws-pub.d-bis.org, wss://rpc.d-bis.org, wss://ws.rpc.d-bis.org, wss://ws.rpc2.d-bis.org, wss://rpc.public-0138.defi-oracle.io, wss://wss.defi-oracle.io (order matches ethereum-lists/chains eip155-138.json)
Chain ID: 138 (0x8a)

1. MetaMask (custom network)

Use Settings → Networks → Add network (or “Add a network manually”) with:

Field	Value
Network name	Defi Oracle Meta Mainnet
RPC URL	`https://rpc-http-pub.d-bis.org`, `https://rpc.d-bis.org`, `https://rpc2.d-bis.org`, `https://rpc.public-0138.defi-oracle.io`, or `https://rpc.defi-oracle.io`
Chain ID	`138`
Currency symbol	ETH
Block explorer	`https://explorer.d-bis.org`

JSON (for programmatic add or import): see docs/04-configuration/metamask/METAMASK_NETWORK_CONFIG.json.

Validated: chainId 0x8a, RPC URLs return eth_chainId → 0x8a.

2. ethers.js (v5 / v6)

// Chain 138 – Defi Oracle Meta Mainnet
const chain138 = {
  chainId: 138,
  name: "Defi Oracle Meta Mainnet",
  nativeCurrency: { name: "Ether", symbol: "ETH", decimals: 18 },
  rpcUrls: {
    default: {
      http: [
        "https://rpc-http-pub.d-bis.org",
        "https://rpc.d-bis.org",
        "https://rpc2.d-bis.org",
        "https://rpc.public-0138.defi-oracle.io",
        "https://rpc.defi-oracle.io"
      ]
    },
    webSocket: [
      "wss://rpc-ws-pub.d-bis.org",
      "wss://rpc.d-bis.org",
      "wss://ws.rpc.d-bis.org",
      "wss://ws.rpc2.d-bis.org",
      "wss://rpc.public-0138.defi-oracle.io",
      "wss://wss.defi-oracle.io"
    ]
  },
  blockExplorers: {
    default: { name: "Blockscout", url: "https://explorer.d-bis.org" }
  }
};

// ethers v6
import { JsonRpcProvider } from "ethers";
const provider = new JsonRpcProvider("https://rpc-http-pub.d-bis.org");
const chainId = await provider.getNetwork().then(n => Number(n.chainId)); // 138

// ethers v6 WebSocket
import { WebSocketProvider } from "ethers";
const wsProvider = new WebSocketProvider("wss://rpc-ws-pub.d-bis.org");

Validated: HTTP RPC returns chainId 138; WS endpoints route to same backend (VMID 2201).

3. Ledger (Chain 138)

Chain 138 is a custom chain. In Ledger Live / Ledger-compatible apps:

Network: Add custom Ethereum-compatible network.
RPC: https://rpc-http-pub.d-bis.org, https://rpc.d-bis.org, https://rpc2.d-bis.org, https://rpc.public-0138.defi-oracle.io, or https://rpc.defi-oracle.io
Chain ID: 138
Explorer: https://explorer.d-bis.org

Ledger does not pre-list Chain 138; use “Add custom network” (or equivalent) with the values above.
SLIP-44: Chain 138 uses slip44: 60 (ETH derivation path) in chain list; Ledger uses standard ETH path for EVM chains.

Validated: No collision with mainnet (1) or common testnets; chain list entry in pr-workspace/chains/_data/chains/eip155-138.json is correct for submission to chainlist.org / Ledger discovery if/when supported.

4. Quick verification

# HTTP RPC
curl -s -X POST https://rpc-http-pub.d-bis.org -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'
# Expected: {"jsonrpc":"2.0","id":1,"result":"0x8a"}

# From LAN (if Split DNS or --resolve used)
curl -sk --resolve rpc-http-pub.d-bis.org:443:192.168.11.167 \
  https://rpc-http-pub.d-bis.org \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'

5. References

RPC verification: docs/04-configuration/RPC_CHAIN138_VERIFICATION.md
MetaMask network JSON: docs/04-configuration/metamask/METAMASK_NETWORK_CONFIG.json
Chain list (chainlist.org): pr-workspace/chains/_data/chains/eip155-138.json
Token list (chain 138): token-lists/chainlists/chain-138.json
Testnet (2138) wallet doc: docs/04-configuration/CHAIN2138_WALLET_CONFIG_VALIDATION.md

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