feat: integrate Hemi (chainId: 43111) via Relay

.beads/ss-dx5.13.json

@@ -0,0 +1,39 @@
+[
+  {
+    "id": "ss-dx5.13",
+    "title": "Integrate Hemi (chainId: 43111, ETH, Bitcoin L2)",
+    "description": "TVL: $57.2M | RPC: https://rpc.hemi.network/rpc | Explorer: https://explorer.hemi.xyz | Token Support: All | Pattern B (RPC-only) | Bitcoin-Ethereum supernetwork",
+    "notes": "\nLogo: https://assets.relay.link/icons/43111/light.png (dark: dark.png)\nCoinGecko platform: hemi\nCoinGecko native ID: weth (but chain uses ETH — adapter.json maps to \"ethereum\")\nArch: Bitcoin L2 (OP Stack compatible)\nNative token: ETH (18 decimals)\nSLIP44: 60 (Ethereum)\nETH-native: YES — affects test ordering + market-service counts\nViem: ✅ hemi (id: 43111) — import { hemi } from \"viem/chains\"\nAcross: ❌ NOT SUPPORTED\nZerion ID: \"hemi\" (standard lowercase)\n\n--- PHASE 1 LEARNED CHECKLIST (MANDATORY) ---\n[ ] adapter.json: Create packages/caip/src/adapters/coingecko/generated/eip155_43111/adapter.json → {\"eip155:43111/slip44:60\":\"ethereum\"}\n[ ] Wire adapter.json: Import+export from packages/caip/src/adapters/coingecko/generated/index.ts\n[ ] getCoingeckoSupportedChainIds: Add hemiChainId (feature-flagged) in src/lib/coingecko/utils.ts\n[ ] Zerion: Add \"hemi\" to ZERION_CHAINS + ZERION_CHAINS_MAP in packages/types/src/zerion.ts\n[ ] Across: ❌ SKIP — not supported\n[ ] ETH test ordering: ✅ REQUIRED — add eip155:43111/slip44:60 to ethereum array in index.test.ts (match import order)\n[ ] Market-service counts: ✅ REQUIRED — bump counts + add destructuring in coingecko.test.ts\n[ ] generateRelatedAssetIndex: Add eip155:43111/slip44:60 → eip155:1/slip44:60 to manualRelatedAssetIndex\n\n--- RELAY ACTIVATION ---\n[ ] Add [hemiChainId]: hemi.id to chainIdToRelayChainId\n[ ] Add native asset case in relayTokenToAssetId.ts\n--- ASSET DATA REGEN ---\n[ ] Create scripts/generateAssetData/hemi/index.ts\n[ ] Add case to scripts/generateAssetData/coingecko.ts\n[ ] Add import + getAssets call to generateAssetData.ts\n--- DRAFT PR ---\n[ ] Branch: feat/integrate-hemi-relay (off develop)\n[ ] gh pr create --draft\n[ ] yarn lint --fix \u0026\u0026 yarn type-check must pass\n",
+    "status": "open",
+    "priority": 2,
+    "issue_type": "task",
+    "owner": "14963751+NeOMakinG@users.noreply.github.com",
+    "created_at": "2026-02-17T10:56:00Z",
+    "created_by": "NeOMakinG",
+    "updated_at": "2026-02-17T22:42:47Z",
+    "labels": [
+      "evm",
+      "op-stack",
+      "relay",
+      "tier-2"
+    ],
+    "dependencies": [
+      {
+        "id": "ss-dx5",
+        "title": "Add support for missing Relay.link EVM chains",
+        "description": "Master epic tracking integration of ALL chains supported by Relay.link that ShapeShift web doesn't currently support. Enables cross-chain bridging capabilities via Relay infrastructure. See https://github.com/shapeshift/web/issues/11902 for full details. All new EVM chains will use Pattern B (RPC-only + getKnownTokens) since no ShapeShift unchained indexer infrastructure exists for these chains.",
+        "notes": "=== FROM ISSUE COMMENTS ===\n\nLOGO PATTERN: https://assets.relay.link/icons/{chainId}/light.png (dark: dark.png)\n\nARCHITECTURE GROUPS:\n- OP Stack (standard): Ink, Unichain, BOB, Mode, Hemi, World Chain, Soneium, Zircuit, Lisk, Cyber, Blast, Zora, Redstone, Shape, Superseed, Manta Pacific\n- zkEVM (special handling): Scroll, zkSync Era, Linea, Polygon zkEVM, Taiko, Abstract\n- Arbitrum Orbit: ApeChain, Xai, Sanko\n- Non-ETH gas (10 chains): Mantle(MNT), Metis(METIS), Cronos(CRO), Ronin(RON), Sonic(S), Flow(FLOW), Berachain(BERA), Plume(PLUME), Story(IP), Stable(gUSDT)\n\nCRITICAL CHAINS:\n1. Celo (42220): Native token is BOTH native AND ERC20. Relay uses wrapped CELO. Check relayTransactionMetadata.assetRequiringApproval\n2. Blast (81457): Rebasing ETH from L1 staking yield. USDB also rebases. Handle in balance displays.\n3. Ethereal (5064014): NOT in viem. Needs custom chain definition.\n4. zkSync Era (324) + Abstract (2741): Type 113 (EIP-712) transactions. Use viem zksync chainConfig.\n5. Linea (59144): Custom linea_estimateGas RPC method.\n6. Sei (1329): Parallelized EVM + CosmWasm interop. CoinGecko uses sei-v2 NOT sei.\n\nCOINGECKO GOTCHAS: sei-\u003esei-v2, plume-\u003eplume-network, zksync-\u003ezksync, metis-\u003emetis-andromeda, morph-\u003emorph-l2, gravity-\u003egravity-alpha, boba-\u003eboba, zora-\u003ezora-network, funkichain-\u003efunki, Superposition (capital S). BOB/Zero Network have null chain_identifier. 11 chains not on CoinGecko at all.\n\nPER-CHAIN CHECKLIST: [ ] chain-adapters [ ] caip [ ] asset-service [ ] feature-flag [ ] plugin [ ] env-config [ ] icon/logo\n\n=== RELAY SWAPPER INTEGRATION (per chain) ===\n\nFILE 1: packages/swapper/src/swappers/RelaySwapper/constant.ts\n  - Add to chainIdToRelayChainId map: [newChainChainId]: \u003cviem_chain\u003e.id (or numeric chain ID)\n  - Import the caip chainId (e.g., scrollChainId) from @shapeshiftoss/caip\n  - Import viem chain from viem/chains (or use raw numeric ID if not in viem)\n  - The reverse map relayChainIdToChainId auto-generates via invert()\n\nFILE 2: packages/swapper/src/swappers/RelaySwapper/utils/relayTokenToAssetId.ts\n  - Add case CHAIN_REFERENCE.NewChainMainnet: with ASSET_REFERENCE.NewChain + ASSET_NAMESPACE.slip44\n\nNO CHANGES NEEDED (for EVM chains):\n  - getRelayAssetAddress.ts (uses generic isNativeEvmAsset + DEFAULT_RELAY_EVM_TOKEN_ADDRESS)\n  - getRelayDefaultUserAddress.ts (falls through to DEFAULT_RELAY_EVM_USER_ADDRESS default)\n\nUPSTREAM DEPS REQUIRED (in @shapeshiftoss packages):\n  - @shapeshiftoss/caip: export newChainChainId, CHAIN_REFERENCE.NewChainMainnet, ASSET_REFERENCE.NewChain\n  - @shapeshiftoss/types: KnownChainIds.NewChainMainnet\n  - @shapeshiftoss/chain-adapters: NewChain chain adapter class\n  - viem/chains: chain config (or custom if not in viem)\n\nRELAY API: https://api.relay.link (env: VITE_RELAY_API_URL) - no per-chain config needed\n\n=== ASSET DATA REGENERATION (per chain) ===\n\nAfter integrating each chain, run a partial assets data regen to populate the token list.\n\nFILE 1 (CREATE): scripts/generateAssetData/\u003cchainname\u003e/index.ts\n  Pattern (identical for all EVM chains):\n    import { \u003cchainname\u003eChainId } from '@shapeshiftoss/caip'\n    import type { Asset } from '@shapeshiftoss/types'\n    import { \u003cchainname\u003e, unfreeze } from '@shapeshiftoss/utils'\n    import * as coingecko from '../coingecko'\n    export const getAssets = async (): Promise\u003cAsset[]\u003e =\u003e {\n      const assets = await coingecko.getAssets(\u003cchainname\u003eChainId)\n      return [...assets, unfreeze(\u003cchainname\u003e)]\n    }\n\nFILE 2 (MODIFY): scripts/generateAssetData/coingecko.ts\n  - Import \u003cchainname\u003eChainId from @shapeshiftoss/caip\n  - Import \u003cchainname\u003e native asset from @shapeshiftoss/utils\n  - Add case in the switch: case \u003cchainname\u003eChainId: return { assetNamespace: ASSET_NAMESPACE.erc20, category: adapters.chainIdToCoingeckoAssetPlatform(chainId), explorer/explorerAddressLink/explorerTxLink from \u003cchainname\u003e utils }\n  - NOTE: chains not on CoinGecko will only have the native asset (no ERC20 token list)\n\nFILE 3 (MODIFY): scripts/generateAssetData/generateAssetData.ts\n  - Import: import * as \u003cchainname\u003e from './\u003cchainname\u003e'\n  - Call: const \u003cchainname\u003eAssets = await \u003cchainname\u003e.getAssets()\n  - Spread into unfilteredAssetData: ...\u003cchainname\u003eAssets\n\nCOMMAND: yarn generate:asset-data\n  This regenerates: src/generated/asset-data.json + related-asset-index + manifest + compressed assets\n\n=== DRAFT PR CREATION (final step per chain) ===\n\nAfter all code changes are complete for a chain, open a draft PR using the repo template.\n\nBRANCH NAMING: feat/integrate-\u003cchainname\u003e-relay (e.g. feat/integrate-scroll-relay)\n\nCOMMAND:\n  gh pr create --draft --title 'feat: integrate \u003cChainName\u003e (chainId: \u003cid\u003e) via Relay' --body \"$(cat \u003c\u003c'PREOF'\n  ## Description\n\n  Add \u003cChainName\u003e (chainId: \u003cid\u003e) as a second-class EVM chain in ShapeShift Web with Relay bridge support.\n\n  **Changes:**\n  - Plugin registration in src/plugins/\u003cchainname\u003e/\n  - Feature flag `\u003cChainName\u003e` in preferencesSlice\n  - Relay swapper chain mapping in RelaySwapper/constant.ts\n  - Asset data generation via CoinGecko (`\u003ccoingecko_platform_id\u003e`)\n  - Environment config for RPC URL\n\n  **Chain details:**\n  - TVL: \u003ctvl\u003e\n  - Native token: \u003ctoken\u003e (18 decimals)\n  - Architecture: \u003carch_type\u003e\n  - RPC: \u003crpc_url\u003e\n  - Explorer: \u003cexplorer_url\u003e\n\n  ## Issue (if applicable)\n\n  Part of #11902\n\n  ## Risk\n\n  Low risk — new chain behind feature flag (`\u003cChainName\u003e`), no existing functionality affected.\n\n  \u003e New chain plugin + Relay bridge mapping. No modifications to existing chain logic.\n\n  ## Testing\n\n  ### Engineering\n\n  1. Enable feature flag: set `VITE_FEATURE_\u003cCHAINNAME\u003e=true` in .env\n  2. Verify chain appears in supported chains list\n  3. Verify native token balance loads (connect wallet with \u003ctoken\u003e on \u003cChainName\u003e)\n  4. Verify Relay bridge quote works: bridge ETH from Ethereum → \u003cChainName\u003e\n  5. Run `yarn lint --fix \u0026\u0026 yarn type-check` — must pass\n\n  ### Operations\n\n  - [x] :checkered_flag: My feature is behind a flag and doesn't require operations testing (yet)\n\n  ## Screenshots (if applicable)\n\n  N/A — chain integration, no UI changes.\n  PREOF\n  )\"\n\nNOTE: Replace all \u003cplaceholders\u003e with actual chain values from the bead description/notes.\nNOTE: Use --draft flag to create as draft PR.\nNOTE: Branch off develop (main branch is develop, not main).",
+        "status": "open",
+        "priority": 0,
+        "issue_type": "epic",
+        "owner": "14963751+NeOMakinG@users.noreply.github.com",
+        "created_at": "2026-02-17T10:55:02Z",
+        "created_by": "NeOMakinG",
+        "updated_at": "2026-02-17T11:21:27Z",
+        "external_ref": "gh-11902",
+        "dependency_type": "parent-child"
+      }
+    ],
+    "parent": "ss-dx5"
+  }
+]

.env

@@ -162,6 +162,7 @@ VITE_MEGAETH_NODE_URL=https://mainnet.megaeth.com/rpc
 VITE_LINEA_NODE_URL=https://rpc.linea.build
 VITE_SCROLL_NODE_URL=https://rpc.scroll.io/
 VITE_KATANA_NODE_URL=https://rpc.katana.network
+VITE_HEMI_NODE_URL=https://rpc.hemi.network/rpc
 VITE_SONIC_NODE_URL=https://rpc.soniclabs.com
 VITE_UNICHAIN_NODE_URL=https://mainnet.unichain.org
 VITE_BOB_NODE_URL=https://rpc.gobob.xyz
@@ -321,6 +322,7 @@ VITE_FEATURE_BERACHAIN=false
 VITE_FEATURE_SCROLL=false
 VITE_FEATURE_NEAR=true
 VITE_FEATURE_KATANA=true
+VITE_FEATURE_HEMI=false
 VITE_FEATURE_SONIC=false
 VITE_FEATURE_UNICHAIN=false
 VITE_FEATURE_BOB=false

.env.development

@@ -61,6 +61,7 @@ VITE_BASE_NODE_URL=https://dev-api.base.shapeshift.com/api/v1/jsonrpc
 VITE_MONAD_NODE_URL=https://rpc.monad.xyz
 VITE_PLASMA_NODE_URL=https://rpc.plasma.to
 VITE_KATANA_NODE_URL=https://rpc.katana.network
+VITE_HEMI_NODE_URL=https://rpc.hemi.network/rpc
 VITE_SONIC_NODE_URL=https://rpc.soniclabs.com
 VITE_UNICHAIN_NODE_URL=https://mainnet.unichain.org
 VITE_BOB_NODE_URL=https://rpc.gobob.xyz
@@ -113,6 +114,7 @@ VITE_FEATURE_LINEA=true
 VITE_FEATURE_BERACHAIN=true
 VITE_FEATURE_SCROLL=true
 VITE_FEATURE_KATANA=true
+VITE_FEATURE_HEMI=true
 VITE_FEATURE_SONIC=true
 VITE_FEATURE_UNICHAIN=true
 VITE_FEATURE_BOB=true

headers/csps/chains/hemi.ts

@@ -0,0 +1,10 @@
+import { loadEnv } from 'vite'
+
+import type { Csp } from '../../types'
+
+const mode = process.env.MODE ?? process.env.NODE_ENV ?? 'development'
+const env = loadEnv(mode, process.cwd(), '')
+
+export const csp: Csp = {
+  'connect-src': [env.VITE_HEMI_NODE_URL],
+}

headers/csps/index.ts

@@ -17,6 +17,7 @@ import { csp as cronos } from './chains/cronos'
 import { csp as dogecoin } from './chains/dogecoin'
 import { csp as ethereum } from './chains/ethereum'
 import { csp as gnosis } from './chains/gnosis'
+import { csp as hemi } from './chains/hemi'
 import { csp as hyperevm } from './chains/hyperevm'
 import { csp as ink } from './chains/ink'
 import { csp as katana } from './chains/katana'
@@ -126,6 +127,7 @@ export const csps = [
   ethereum,
   bob,
   gnosis,
+  hemi,
   berachain,
   hyperevm,
   ink,

packages/caip/src/adapters/coingecko/generated/eip155_43111/adapter.json

@@ -0,0 +1,3 @@
+{
+  "eip155:43111/slip44:60": "ethereum"
+}

packages/caip/src/adapters/coingecko/generated/index.ts

@@ -14,6 +14,7 @@ import monad from "./eip155_143/adapter.json";
 import hyperevm from "./eip155_999/adapter.json";
 import plasma from "./eip155_9745/adapter.json";
 import katana from "./eip155_747474/adapter.json";
+import hemi from "./eip155_43111/adapter.json";
 import linea from "./eip155_59144/adapter.json";
 import bob from "./eip155_60808/adapter.json";
 import mode from "./eip155_34443/adapter.json";
@@ -55,6 +56,7 @@ export {
   hyperevm,
   plasma,
   katana,
+  hemi,
   linea,
   mode,
   megaeth,

packages/caip/src/adapters/coingecko/index.test.ts

@@ -63,6 +63,12 @@ describe('adapters:coingecko', () => {
         assetNamespace: 'slip44',
         assetReference: ASSET_REFERENCE.MegaEth,
       })
+      const ethOnHemi = toAssetId({
+        chainNamespace,
+        chainReference: CHAIN_REFERENCE.HemiMainnet,
+        assetNamespace: 'slip44',
+        assetReference: ASSET_REFERENCE.Hemi,
+      })
       const ethOnLinea = toAssetId({
         chainNamespace,
         chainReference: CHAIN_REFERENCE.LineaMainnet,
@@ -111,6 +117,7 @@ describe('adapters:coingecko', () => {
         ethOnArbitrum,
         ethOnBase,
         ethOnBob,
+        ethOnHemi,
         ethOnLinea,
         ethOnMode,
         ethOnMegaEth,

packages/caip/src/adapters/coingecko/index.ts

@@ -17,6 +17,7 @@ import {
   cronosChainId,
   ethChainId,
   gnosisChainId,
+  hemiChainId,
   hyperEvmChainId,
   inkChainId,
   katanaChainId,
@@ -63,12 +64,13 @@ export enum CoingeckoAssetPlatform {
   Plasma = 'plasma',
   Ink = 'ink',
   Katana = 'katana',
+  Hemi = 'hemi',
   Mantle = 'mantle',
   Linea = 'linea',
+  Sonic = 'sonic',
   Unichain = 'unichain',
   Bob = 'bob-network',
   Mode = 'mode',
-  Sonic = 'sonic',
   MegaEth = 'megaeth',
   Berachain = 'berachain',
   Scroll = 'scroll',
@@ -134,6 +136,8 @@ export const chainIdToCoingeckoAssetPlatform = (chainId: ChainId): string => {
           return CoingeckoAssetPlatform.Plasma
         case CHAIN_REFERENCE.KatanaMainnet:
           return CoingeckoAssetPlatform.Katana
+        case CHAIN_REFERENCE.HemiMainnet:
+          return CoingeckoAssetPlatform.Hemi
         case CHAIN_REFERENCE.MantleMainnet:
           return CoingeckoAssetPlatform.Mantle
         case CHAIN_REFERENCE.SonicMainnet:
@@ -277,6 +281,8 @@ export const coingeckoAssetPlatformToChainId = (
       return modeChainId
     case CoingeckoAssetPlatform.MegaEth:
       return megaethChainId
+    case CoingeckoAssetPlatform.Hemi:
+      return hemiChainId
     case CoingeckoAssetPlatform.Linea:
       return lineaChainId
     case CoingeckoAssetPlatform.Berachain:

packages/caip/src/adapters/coingecko/utils.test.ts

@@ -188,6 +188,9 @@ describe('adapters:coingecko:utils', () => {
         'eip155:747474': {
           'eip155:747474/slip44:60': 'katana',
         },
+        'eip155:43111': {
+          'eip155:43111/slip44:60': 'ethereum',
+        },
         'eip155:5000': {
           'eip155:5000/slip44:60': 'mantle',
         },

packages/caip/src/adapters/coingecko/utils.ts

@@ -30,6 +30,8 @@ import {
   ethChainId,
   gnosisAssetId,
   gnosisChainId,
+  hemiAssetId,
+  hemiChainId,
   hyperEvmAssetId,
   hyperEvmChainId,
   inkAssetId,
@@ -409,6 +411,20 @@ export const parseData = (coins: CoingeckoCoin[]): AssetMap => {
         }
       }
 
+      if (Object.keys(platforms).includes(CoingeckoAssetPlatform.Hemi)) {
+        try {
+          const assetId = toAssetId({
+            chainNamespace: CHAIN_NAMESPACE.Evm,
+            chainReference: CHAIN_REFERENCE.HemiMainnet,
+            assetNamespace: 'erc20',
+            assetReference: platforms[CoingeckoAssetPlatform.Hemi],
+          })
+          prev[hemiChainId][assetId] = id
+        } catch {
+          // unable to create assetId, skip token
+        }
+      }
+
       if (Object.keys(platforms).includes(CoingeckoAssetPlatform.Sonic)) {
         try {
           const assetId = toAssetId({
@@ -542,6 +558,7 @@ export const parseData = (coins: CoingeckoCoin[]): AssetMap => {
       [berachainChainId]: { [berachainAssetId]: 'berachain-bera' },
       [cronosChainId]: { [cronosAssetId]: 'crypto-com-chain' },
       [katanaChainId]: { [katanaAssetId]: 'katana' },
+      [hemiChainId]: { [hemiAssetId]: 'ethereum' },
       [scrollChainId]: { [scrollAssetId]: 'ethereum' },
       [sonicChainId]: { [sonicAssetId]: 'sonic-3' },
       [unichainChainId]: { [unichainAssetId]: 'ethereum' },

packages/caip/src/constants.ts

@@ -24,6 +24,7 @@ export const megaethAssetId: AssetId = 'eip155:4326/slip44:60'
 export const berachainAssetId: AssetId = 'eip155:80094/slip44:60'
 export const cronosAssetId: AssetId = 'eip155:25/slip44:60'
 export const katanaAssetId: AssetId = 'eip155:747474/slip44:60'
+export const hemiAssetId: AssetId = 'eip155:43111/slip44:60'
 export const lineaAssetId: AssetId = 'eip155:59144/slip44:60'
 export const scrollAssetId: AssetId = 'eip155:534352/slip44:60'
 export const sonicAssetId: AssetId = 'eip155:146/slip44:60'
@@ -96,6 +97,7 @@ export const megaethChainId: ChainId = 'eip155:4326'
 export const berachainChainId: ChainId = 'eip155:80094'
 export const cronosChainId: ChainId = 'eip155:25'
 export const katanaChainId: ChainId = 'eip155:747474'
+export const hemiChainId: ChainId = 'eip155:43111'
 export const lineaChainId: ChainId = 'eip155:59144'
 export const scrollChainId: ChainId = 'eip155:534352'
 export const sonicChainId: ChainId = 'eip155:146'
@@ -159,6 +161,7 @@ export const CHAIN_REFERENCE = {
   BerachainMainnet: '80094',
   CronosMainnet: '25',
   KatanaMainnet: '747474', // https://docs.katana.network
+  HemiMainnet: '43111', // https://docs.hemi.xyz
   LineaMainnet: '59144', // https://docs.linea.build
   ScrollMainnet: '534352', // https://scrollscan.com
   SonicMainnet: '146', // https://docs.soniclabs.com
@@ -215,6 +218,7 @@ export const ASSET_REFERENCE = {
   Berachain: '60', // evm chain which uses ethereum derivation path as common practice
   Cronos: '60', // evm chain which uses ethereum derivation path as common practice
   Katana: '60', // evm chain which uses ethereum derivation path as common practice
+  Hemi: '60', // evm chain which uses ethereum derivation path as common practice
   Linea: '60', // evm chain which uses ethereum derivation path as common practice
   Scroll: '60', // evm chain which uses ethereum derivation path as common practice
   Sonic: '60', // evm chain which uses ethereum derivation path as common practice
@@ -256,6 +260,7 @@ export const VALID_CHAIN_IDS: ValidChainMap = Object.freeze({
     CHAIN_REFERENCE.BerachainMainnet,
     CHAIN_REFERENCE.CronosMainnet,
     CHAIN_REFERENCE.KatanaMainnet,
+    CHAIN_REFERENCE.HemiMainnet,
     CHAIN_REFERENCE.LineaMainnet,
     CHAIN_REFERENCE.ScrollMainnet,
     CHAIN_REFERENCE.SonicMainnet,
@@ -320,6 +325,7 @@ export const FEE_ASSET_IDS = [
   mantleAssetId,
   inkAssetId,
   megaethAssetId,
+  hemiAssetId,
   lineaAssetId,
   berachainAssetId,
   scrollAssetId,