LedgerLive/step-03-coin-module

Step 3 — Create coin module

For Chain 138 we extend the Ethereum family in ledger-live (no new coin-module). Use:

Note: network-explorer.ts uses Blockscout REST v2 API (GET /api/v2/addresses/{address}/transactions) with next_page_params pagination. Do not use Etherscan-style module=account&action=txlist — Blockscout uses a different API.

• config.chain138.ts — Chain 138 RPC and explorer config; plug into Ethereum family config or currency config.
• network-explorer.ts — Example network layer (getLastBlock, getBalance, getTransactionCount, getAddressTransactions). Adapt to the Ethereum coin-module’s network/bridge API (e.g. wrap in the same interface as other EVM chains).

If Ledger requests a dedicated coin-module, create libs/coin-modules/coin-defi_oracle_meta/ with:

• bridge/ — sync, buildTransaction, signOperation, broadcast, getFeesForTransaction, getTransactionStatus
• logic/ — core logic (no bridge imports)
• network/ — this explorer + RPC wrapper
• signer/ — Step 4 getAddress + sign
• types/ — bridge, signer, errors
• config.ts, index.ts

Dependency rule: logic → network only; bridge → logic, network, signer.