From 35e2af63890002f67bd5953617c34025b80e53e1 Mon Sep 17 00:00:00 2001
From: SergeyG-Solicy <seg.ghazarian@gmail.com>
Date: Wed, 10 Dec 2025 16:58:27 +0400
Subject: [PATCH 1/2] Added ATOM (Cosmos Hub) chain support for transaction
 broadcasting

---
 sdk/localsdk/multichain/configs/chainProviders.ts       | 4 ++++
 sdk/localsdk/multichain/configs/ibcProviders.ts         | 6 +++---
 src/features/multichain/routines/executors/pay.ts       | 1 +
 src/libs/blockchain/gcr/gcr_routines/identityManager.ts | 2 ++
 src/utilities/validateUint8Array.ts                     | 6 ++++++
 5 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/sdk/localsdk/multichain/configs/chainProviders.ts b/sdk/localsdk/multichain/configs/chainProviders.ts
index d1022a474..c73088c1b 100644
--- a/sdk/localsdk/multichain/configs/chainProviders.ts
+++ b/sdk/localsdk/multichain/configs/chainProviders.ts
@@ -33,6 +33,10 @@ export const chainProviders = {
         mainnet: "https://stargaze-rpc.publicnode.com:443",
         testnet: "https://rpc.elgafar-1.stargaze-apis.com",
     },
+    atom: {
+        mainnet: "https://cosmos-rpc.publicnode.com:443",
+        testnet: "https://rpc.provider-sentry-01.ics-testnet.polypore.xyz",
+    },
     near: {
         mainnet: "https://rpc.near.org",
         testnet: "https://rpc.testnet.near.org",
diff --git a/sdk/localsdk/multichain/configs/ibcProviders.ts b/sdk/localsdk/multichain/configs/ibcProviders.ts
index 8d4a43ad5..dd6897588 100644
--- a/sdk/localsdk/multichain/configs/ibcProviders.ts
+++ b/sdk/localsdk/multichain/configs/ibcProviders.ts
@@ -1,6 +1,6 @@
 export default {
     cosmos: {
-        mainnet: "",
-        testnet: "https://rpc.sentry-01.theta-testnet.polypore.xyz",
+        mainnet: "https://cosmos-rpc.publicnode.com:443",
+        testnet: "https://rpc.provider-sentry-01.ics-testnet.polypore.xyz",
     },
-}
\ No newline at end of file
+}
diff --git a/src/features/multichain/routines/executors/pay.ts b/src/features/multichain/routines/executors/pay.ts
index 3ee2616f4..c1ea365c7 100644
--- a/src/features/multichain/routines/executors/pay.ts
+++ b/src/features/multichain/routines/executors/pay.ts
@@ -69,6 +69,7 @@ export default async function handlePayOperation(
             break
 
         case "ibc":
+        case "atom":
             result = await genericJsonRpcPay(multichain.IBC, rpcUrl, operation)
             break
 
diff --git a/src/libs/blockchain/gcr/gcr_routines/identityManager.ts b/src/libs/blockchain/gcr/gcr_routines/identityManager.ts
index 9b398ab4f..0aca5fb19 100644
--- a/src/libs/blockchain/gcr/gcr_routines/identityManager.ts
+++ b/src/libs/blockchain/gcr/gcr_routines/identityManager.ts
@@ -44,6 +44,7 @@ const chains: { [key: string]: typeof DefaultChain } = {
     ton: TON,
     xrpl: XRPL,
     ibc: IBC,
+    atom: IBC,
     near: NEAR,
     // @ts-expect-error - BTC module contains more fields than the DefaultChain type
     btc: BTC,
@@ -207,6 +208,7 @@ export default class IdentityManager {
                 chainId === "xrpl" ||
                 chainId === "ton" ||
                 chainId === "ibc" ||
+                chainId === "atom" ||
                 chainId === "near"
             ) {
                 messageVerified = await sdk.verifyMessage(
diff --git a/src/utilities/validateUint8Array.ts b/src/utilities/validateUint8Array.ts
index 9763a3fa5..5fa78eebf 100644
--- a/src/utilities/validateUint8Array.ts
+++ b/src/utilities/validateUint8Array.ts
@@ -4,6 +4,12 @@ export default function validateIfUint8Array(input: unknown): Uint8Array | unkno
         return input
     }
 
+    // Handle hex strings
+    if (typeof input === "string" && input.startsWith("0x")) {
+        const hexString = input.slice(2) // Remove "0x" prefix
+        return Buffer.from(hexString, "hex")
+    }
+
     // Type guard: check if input is a record-like object with numeric integer keys and number values
     if (typeof input === "object" && input !== null) {
         // Safely cast to indexable type after basic validation

From 2b77a900dff744d03d5664f06d828b4a1e1a26fa Mon Sep 17 00:00:00 2001
From: SergeyG-Solicy <seg.ghazarian@gmail.com>
Date: Wed, 10 Dec 2025 17:25:14 +0400
Subject: [PATCH 2/2] Fixed qodo comments

---
 sdk/localsdk/multichain/configs/ibcProviders.ts | 6 ------
 src/utilities/validateUint8Array.ts             | 7 ++++++-
 2 files changed, 6 insertions(+), 7 deletions(-)
 delete mode 100644 sdk/localsdk/multichain/configs/ibcProviders.ts

diff --git a/sdk/localsdk/multichain/configs/ibcProviders.ts b/sdk/localsdk/multichain/configs/ibcProviders.ts
deleted file mode 100644
index dd6897588..000000000
--- a/sdk/localsdk/multichain/configs/ibcProviders.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-export default {
-    cosmos: {
-        mainnet: "https://cosmos-rpc.publicnode.com:443",
-        testnet: "https://rpc.provider-sentry-01.ics-testnet.polypore.xyz",
-    },
-}
diff --git a/src/utilities/validateUint8Array.ts b/src/utilities/validateUint8Array.ts
index 5fa78eebf..60cbce0c1 100644
--- a/src/utilities/validateUint8Array.ts
+++ b/src/utilities/validateUint8Array.ts
@@ -7,7 +7,12 @@ export default function validateIfUint8Array(input: unknown): Uint8Array | unkno
     // Handle hex strings
     if (typeof input === "string" && input.startsWith("0x")) {
         const hexString = input.slice(2) // Remove "0x" prefix
-        return Buffer.from(hexString, "hex")
+        // Validate hex string before conversion
+        if (hexString.length % 2 === 0 && /^[0-9a-fA-F]*$/.test(hexString)) {
+            return Buffer.from(hexString, "hex")
+        }
+
+        return input
     }
 
     // Type guard: check if input is a record-like object with numeric integer keys and number values