feat(statics): add MIDL Bitcoin EVM chain

Add MIDL Bitcoin (midlbtc) EVM chain to BitGoJS statics and SDK core.
MIDL is a dual-layer blockchain with Bitcoin L1 settlement and EVM L2
execution. P0 integration covers EVM-to-EVM value transfers only.

Mainnet entries use staging placeholders (chain ID, explorer URLs)
pending mainnet launch details. Display symbol set to midlBTC.

Ticket: CECHO-1231

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: ArunBala-Bitgo

modules/sdk-core/src/bitgo/environments.ts

@@ -313,6 +313,9 @@ const mainnetBase: EnvironmentTemplate = {
     hemieth: {
       baseUrl: 'https://explorer.hemi.xyz/api',
     },
+    midlbtc: {
+      baseUrl: 'https://blockscout.staging.midl.xyz/api', // TODO: update with mainnet explorer URL when available
+    },
     katanaeth: {
       baseUrl: 'https://katanascan.com/api',
     },
@@ -546,6 +549,9 @@ const testnetBase: EnvironmentTemplate = {
     hemieth: {
       baseUrl: 'https://testnet.explorer.hemi.xyz/api',
     },
+    midlbtc: {
+      baseUrl: 'https://blockscout.staging.midl.xyz/api',
+    },
     tkatanaeth: {
       baseUrl: 'https://explorer-bokuto.katanarpc.com/api',
     },

modules/statics/src/allCoinsAndTokens.ts

@@ -2664,6 +2664,46 @@ export const allCoinsAndTokens = [
     UnderlyingAsset['hemieth:hemibtc'],
     Networks.main.hemieth
   ),
+  account(
+    '1d547ad4-3165-4a51-922a-b29f8a427f88',
+    'midlbtc',
+    'MIDL Bitcoin',
+    Networks.main.midlbtc,
+    18,
+    UnderlyingAsset.MIDLBTC,
+    BaseUnit.MIDLBTC,
+    [
+      ...EVM_NON_EIP1559_FEATURES,
+      CoinFeature.SHARED_EVM_SIGNING,
+      CoinFeature.SHARED_EVM_SDK,
+      CoinFeature.EVM_COMPATIBLE_IMS,
+      CoinFeature.EVM_COMPATIBLE_UI,
+      CoinFeature.EVM_COMPATIBLE_WP,
+    ],
+    KeyCurve.Secp256k1,
+    '',
+    'midlBTC'
+  ),
+  account(
+    '1b2bdc62-c990-4194-b05e-fb4d840abc1d',
+    'tmidlbtc',
+    'Testnet MIDL Bitcoin',
+    Networks.test.midlbtc,
+    18,
+    UnderlyingAsset.MIDLBTC,
+    BaseUnit.MIDLBTC,
+    [
+      ...EVM_NON_EIP1559_FEATURES,
+      CoinFeature.SHARED_EVM_SIGNING,
+      CoinFeature.SHARED_EVM_SDK,
+      CoinFeature.EVM_COMPATIBLE_IMS,
+      CoinFeature.EVM_COMPATIBLE_UI,
+      CoinFeature.EVM_COMPATIBLE_WP,
+    ],
+    KeyCurve.Secp256k1,
+    '',
+    'midlBTC'
+  ),
   account(
     'd055d442-03f1-4d24-b61c-5312e480e378',
     'bobaeth',

modules/statics/src/base.ts

@@ -90,6 +90,7 @@ export enum CoinFamily {
   MANTLE = 'mantle',
   MANTRA = 'mantra',
   MEGAETH = 'megaeth',
+  MIDLBTC = 'midlbtc', // MIDL Bitcoin EVM L2
   MON = 'mon',
   XPL = 'xpl', // Plasma Network
   POLYGON = 'polygon',
@@ -673,6 +674,7 @@ export enum UnderlyingAsset {
   MANTLE = 'mantle',
   MANTRA = 'mantra',
   MEGAETH = 'megaeth',
+  MIDLBTC = 'midlbtc',
   MON = 'mon',
   MORPH = 'morph',
   MORPHETH = 'morpheth',
@@ -4047,6 +4049,7 @@ export enum BaseUnit {
   INITIA = 'uinit',
   ASI = 'afet',
   VET = 'wei',
+  MIDLBTC = 'wei',
   TCRONOS = 'basetcro',
   TASI = 'atestfet',
   CANTON = 'canton',

modules/statics/src/coins/ofcCoins.ts

@@ -425,6 +425,22 @@ export const ofcCoins = [
     UnderlyingAsset.HEMIETH,
     CoinKind.CRYPTO
   ),
+  ofc(
+    'c2698de6-27a0-41fc-96fc-8a2bf2777359',
+    'ofcmidlbtc',
+    'MIDL Bitcoin',
+    18,
+    UnderlyingAsset.MIDLBTC,
+    CoinKind.CRYPTO
+  ),
+  tofc(
+    'f67dee61-409b-40e2-a7b0-bda680d889eb',
+    'ofctmidlbtc',
+    'MIDL Bitcoin Testnet',
+    18,
+    UnderlyingAsset.MIDLBTC,
+    CoinKind.CRYPTO
+  ),
   tofc(
     '7d18cdc5-a7da-4c76-8ce0-f80c391f80b3',
     'ofctprividiumeth',

modules/statics/src/networks.ts

@@ -2580,6 +2580,24 @@ class HemiEthTestnet extends Testnet implements EthereumNetwork {
   chainId = 743111;
   nativeCoinOperationHashPrefix = '743111';
 }
+class MidlBtc extends Mainnet implements EthereumNetwork {
+  name = 'MIDL Bitcoin';
+  family = CoinFamily.MIDLBTC;
+  explorerUrl = 'https://blockscout.staging.midl.xyz/tx/'; // TODO: update with mainnet explorer URL when available
+  accountExplorerUrl = 'https://blockscout.staging.midl.xyz/address/'; // TODO: update with mainnet explorer URL when available
+  chainId = 15001; // TODO: update with mainnet chain ID when available
+  nativeCoinOperationHashPrefix = '15001'; // TODO: update with mainnet chain ID when available
+}
+
+class MidlBtcTestnet extends Testnet implements EthereumNetwork {
+  name = 'Testnet MIDL Bitcoin';
+  family = CoinFamily.MIDLBTC;
+  explorerUrl = 'https://blockscout.staging.midl.xyz/tx/';
+  accountExplorerUrl = 'https://blockscout.staging.midl.xyz/address/';
+  chainId = 15001;
+  nativeCoinOperationHashPrefix = '15001';
+}
+
 class KatanaEth extends Mainnet implements EthereumNetwork {
   name = 'Katana';
   family = CoinFamily.KATANAETH;
@@ -2892,6 +2910,7 @@ export const Networks = {
     lnbtc: Object.freeze(new LightningBitcoin()),
     litecoin: Object.freeze(new Litecoin()),
     megaeth: Object.freeze(new MegaETH()),
+    midlbtc: Object.freeze(new MidlBtc()),
     mon: Object.freeze(new Monad()),
     mantle: Object.freeze(new Mantle()),
     mantra: Object.freeze(new Mantra()),
@@ -3008,6 +3027,7 @@ export const Networks = {
     hederaEVM: Object.freeze(new HederaEVMTestnet()),
     hemieth: Object.freeze(new HemiEthTestnet()),
     inketh: Object.freeze(new InkEthTestnet()),
+    midlbtc: Object.freeze(new MidlBtcTestnet()),
     icp: Object.freeze(new IcpTestnet()),
     ip: Object.freeze(new IPTestnet()),
     initia: Object.freeze(new InitiaTestnet()),

modules/statics/test/unit/fixtures/expectedColdFeatures.ts

@@ -120,6 +120,7 @@ export const expectedColdFeatures = {
     'megaeth',
     'mantle',
     'mantra',
+    'midlbtc',
     'mon',
     'morph',
     'morpheth',
@@ -193,6 +194,7 @@ export const expectedColdFeatures = {
     'tmorph',
     'tmorpheth',
     'tmegaeth',
+    'tmidlbtc',
     'tmon',
     'tworld',
     'tphrs',