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Add full Chain 138 integration: 8 steps, chain spec, app-ethereum config, docs

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Co-authored-by: Cursor <cursoragent@cursor.com>
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2026-02-12 15:57:08 -08:00
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step-04-signer/README.md Normal file
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# Step 4 — Derivation / Signer
- **types-signer.ts** — Signer interface (Ethereum-style: getAddress, signTransaction, signPersonalMessage). Use as-is for EVM/Chain 138.
- **getAddress.ts** — getAddress resolver using `@ledgerhq/coin-framework` (GetAddressFn, SignerContext, GetAddressOptions). Register in live-common family setup.
**CLI check (after currency is added):**
```bash
ledger-live getAddress --currency defi_oracle_meta_mainnet --path "44'/60'/0'/0/0" --derivationMode ""
```
Or with ethereum currency and chainId in config:
```bash
ledger-live getAddress --currency ethereum --path "44'/60'/0'/0/0" --derivationMode ""
```
Derivation for Chain 138: **44'/60'/0'/0/0** (standard EVM BIP44).