diff --git a/packages/dart/CHANGELOG.md b/packages/dart/CHANGELOG.md
index 366d917..51da49b 100644
--- a/packages/dart/CHANGELOG.md
+++ b/packages/dart/CHANGELOG.md
@@ -4,7 +4,15 @@ All notable changes to this package are documented here. Format based on
 [Keep a Changelog](https://keepachangelog.com/en/1.1.0/); versioning follows
 [SemVer](https://semver.org/spec/v2.0.0.html).
 
-## 0.2.1-beta
+## 0.1.1-beta
+
+### Changed
+
+- Pin the deployed SafHandle mainnet contract address on `safrochain-1`.
+- Point the mainnet preset at `rpc/api.safrochain.network` and set the
+  gas price to `0.15usaf`.
+
+## 0.1.0
 
 ### Added
 
diff --git a/packages/dart/README.md b/packages/dart/README.md
index d0dcb5b..e60af40 100644
--- a/packages/dart/README.md
+++ b/packages/dart/README.md
@@ -23,7 +23,7 @@ rules, and message shapes match one-to-one.
 ```yaml
 # pubspec.yaml
 dependencies:
-  safhandle: ^0.2.1-beta
+  safhandle: ^0.1.0
 ```
 
 ```bash
diff --git a/packages/dart/example/resolve.dart b/packages/dart/example/resolve.dart
index df558d7..27b19db 100644
--- a/packages/dart/example/resolve.dart
+++ b/packages/dart/example/resolve.dart
@@ -30,7 +30,8 @@ Future<void> main(List<String> args) async {
 
     final record = await client.getAddress(input);
     stdout.writeln('$input → $address');
-    stdout.writeln('  type: ${record.recordType}, key: ${record.normalizedKey}');
+    stdout
+        .writeln('  type: ${record.recordType}, key: ${record.normalizedKey}');
   } finally {
     client.close();
   }
diff --git a/packages/dart/lib/src/client.dart b/packages/dart/lib/src/client.dart
index 2b86a47..89c49a2 100644
--- a/packages/dart/lib/src/client.dart
+++ b/packages/dart/lib/src/client.dart
@@ -78,7 +78,8 @@ class SafHandleClient {
 
     late final http.Response res;
     try {
-      res = await _http.get(uri, headers: const <String, String>{'Accept': 'application/json'});
+      res = await _http.get(uri,
+          headers: const <String, String>{'Accept': 'application/json'});
     } catch (err) {
       throw SafHandleQueryException('Request failed: $err');
     }
@@ -127,7 +128,8 @@ class SafHandleClient {
   /// Throws when the handle is unregistered (see [lookup] for a null-returning
   /// variant).
   Future<GetAddressResponse> getAddress(String input) async {
-    return GetAddressResponse.fromJson(await _queryObject(QueryMsg.getAddress(input)));
+    return GetAddressResponse.fromJson(
+        await _queryObject(QueryMsg.getAddress(input)));
   }
 
   /// Resolve a name, returning just the address, or `null` if the handle is not
@@ -144,7 +146,8 @@ class SafHandleClient {
 
   /// Resolve by name only. [name] may be bare (`john`) or full (`john.saf`).
   Future<String> resolveName(String name) async {
-    final res = AddressResponse.fromJson(await _queryObject(QueryMsg.resolveName(name)));
+    final res = AddressResponse.fromJson(
+        await _queryObject(QueryMsg.resolveName(name)));
     return res.address;
   }
 
@@ -152,7 +155,8 @@ class SafHandleClient {
   /// record — [HandlesResponse.name] comes back as `null` when the address owns
   /// none.
   Future<HandlesResponse> getHandles(String address) async {
-    return HandlesResponse.fromJson(await _queryObject(QueryMsg.handles(address)));
+    return HandlesResponse.fromJson(
+        await _queryObject(QueryMsg.handles(address)));
   }
 
   /// Full record for a name, including owner and registration height.
diff --git a/packages/dart/lib/src/constants.dart b/packages/dart/lib/src/constants.dart
index bc37ae9..919818c 100644
--- a/packages/dart/lib/src/constants.dart
+++ b/packages/dart/lib/src/constants.dart
@@ -43,13 +43,12 @@ class NetworkConfig {
 
 /// Deployed SafHandle contract address per named network, baked into the SDK so
 /// callers don't have to carry it around.
-///
-/// `mainnet` is a placeholder — swap it for the real address once the contract
-/// is deployed and the SDK is verified against it.
-const Map<SafHandleNetwork, String> contractAddresses = <SafHandleNetwork, String>{
+const Map<SafHandleNetwork, String> contractAddresses =
+    <SafHandleNetwork, String>{
   SafHandleNetwork.testnet:
       'addr_safro17ykz5k26fzg0808knarpgg2tdxxxfmefuh9mydusqyfkr3vtdvysvv2vs0',
-  SafHandleNetwork.mainnet: 'addr_saf_MAIN_NET',
+  SafHandleNetwork.mainnet:
+      'addr_safro14hj2tavq8fpesdwxxcu44rty3hh90vhujrvcmstl4zr3txmfvw9s0nv26n',
 };
 
 /// Safrochain testnet (`safro-testnet-1`) preset.
@@ -65,16 +64,17 @@ const NetworkConfig safrochainTestnet = NetworkConfig(
       'addr_safro17ykz5k26fzg0808knarpgg2tdxxxfmefuh9mydusqyfkr3vtdvysvv2vs0',
 );
 
-/// Safrochain mainnet (`safrochain-1`) preset. Contract address is a placeholder
-/// until the contract is deployed.
+/// Safrochain mainnet (`safrochain-1`) preset.
 const NetworkConfig safrochainMainnet = NetworkConfig(
   chainId: 'safrochain-1',
-  rpcEndpoint: 'https://rpc.safrochain.com',
-  restEndpoint: 'https://api.safrochain.com',
+  rpcEndpoint: 'https://rpc.safrochain.network',
+  restEndpoint: 'https://api.safrochain.network',
   addressPrefix: 'addr_safro',
   denom: 'usaf',
-  gasPrice: '100000usaf',
-  contractAddress: 'addr_saf_MAIN_NET',
+  gasPrice: '0.15usaf',
+  // SafHandle v1 (name-only) contract on safrochain-1.
+  contractAddress:
+      'addr_safro14hj2tavq8fpesdwxxcu44rty3hh90vhujrvcmstl4zr3txmfvw9s0nv26n',
 );
 
 /// Default gas price used when constructing a signing client.
diff --git a/packages/dart/lib/src/signing_client.dart b/packages/dart/lib/src/signing_client.dart
index e637b1f..bde22f7 100644
--- a/packages/dart/lib/src/signing_client.dart
+++ b/packages/dart/lib/src/signing_client.dart
@@ -9,7 +9,8 @@ import 'validation.dart';
 /// Result of a signed, broadcast execute call.
 @immutable
 class ExecuteResult {
-  const ExecuteResult({required this.transactionHash, this.height, this.rawLog});
+  const ExecuteResult(
+      {required this.transactionHash, this.height, this.rawLog});
 
   final String transactionHash;
   final int? height;
@@ -117,7 +118,8 @@ class SafHandleSigningClient extends SafHandleClient {
   /// Register a short name for the sender. Validates and normalizes locally,
   /// attaches the exact registration fee (from [WriteOptions.fee], else fetched
   /// from the contract config).
-  Future<ExecuteResult> registerName(String name, {WriteOptions? options}) async {
+  Future<ExecuteResult> registerName(String name,
+      {WriteOptions? options}) async {
     final normalized = normalizeName(name);
     final fee = options?.fee ?? await _nameFee();
     return _exec(
diff --git a/packages/dart/lib/src/types.dart b/packages/dart/lib/src/types.dart
index b1c09d3..dbb7818 100644
--- a/packages/dart/lib/src/types.dart
+++ b/packages/dart/lib/src/types.dart
@@ -125,7 +125,8 @@ class Coin {
   final String denom;
   final String amount;
 
-  Map<String, dynamic> toJson() => <String, dynamic>{'denom': denom, 'amount': amount};
+  Map<String, dynamic> toJson() =>
+      <String, dynamic>{'denom': denom, 'amount': amount};
 
   @override
   bool operator ==(Object other) =>
diff --git a/packages/dart/lib/src/validation.dart b/packages/dart/lib/src/validation.dart
index 6d95c44..7736dcd 100644
--- a/packages/dart/lib/src/validation.dart
+++ b/packages/dart/lib/src/validation.dart
@@ -46,10 +46,12 @@ bool _isAscii(String s) {
 /// `reservedName`.
 String normalizeName(String input) {
   final trimmed = input.trim();
-  final bare =
-      trimmed.startsWith(namePrefix) ? trimmed.substring(namePrefix.length) : trimmed;
+  final bare = trimmed.startsWith(namePrefix)
+      ? trimmed.substring(namePrefix.length)
+      : trimmed;
   if (bare.isEmpty) {
-    throw const SafHandleError(SafHandleErrorCode.invalidName, 'Name is empty.');
+    throw const SafHandleError(
+        SafHandleErrorCode.invalidName, 'Name is empty.');
   }
 
   // Any `@` beyond the leading display marker means an email-shaped input.
@@ -68,8 +70,9 @@ String normalizeName(String input) {
   }
 
   final lowered = bare.toLowerCase();
-  final label =
-      lowered.endsWith(nameSuffix) ? lowered.substring(0, lowered.length - nameSuffix.length) : lowered;
+  final label = lowered.endsWith(nameSuffix)
+      ? lowered.substring(0, lowered.length - nameSuffix.length)
+      : lowered;
 
   // After stripping the single allowed `.saf` suffix, no dot may remain
   // (blocks `john.com`, `a.b.saf`, and other domain/email-shaped input).
diff --git a/packages/dart/pubspec.yaml b/packages/dart/pubspec.yaml
index 6b2a2f8..bc88bea 100644
--- a/packages/dart/pubspec.yaml
+++ b/packages/dart/pubspec.yaml
@@ -1,9 +1,9 @@
 name: safhandle
 description: >-
-  Dart/Flutter SDK for the SafHandle name service on Safrochain — resolve wallet
-  addresses by name and register handles on-chain, with client-side validation
-  that mirrors the contract.
-version: 0.2.1-beta
+  Dart/Flutter SDK for the SafHandle name service on Safrochain — resolve
+  wallet addresses by name and register handles on-chain, mirroring the
+  contract's validation.
+version: 0.1.1-beta
 repository: https://github.com/Safrochain-Org/safhandle-sdk
 homepage: https://github.com/Safrochain-Org/safhandle-sdk/tree/main/packages/dart
 issue_tracker: https://github.com/Safrochain-Org/safhandle-sdk/issues
diff --git a/packages/dart/test/client_test.dart b/packages/dart/test/client_test.dart
index a5e5c27..ce2155c 100644
--- a/packages/dart/test/client_test.dart
+++ b/packages/dart/test/client_test.dart
@@ -24,11 +24,13 @@ SafHandleClient clientWith(MockClient mock) => SafHandleClient(
     );
 
 void main() {
-  test('getAddress builds a get_address smart query and parses the response', () async {
+  test('getAddress builds a get_address smart query and parses the response',
+      () async {
     late Map<String, dynamic> seenQuery;
     final mock = MockClient((request) async {
       seenQuery = decodeQuery(request);
-      expect(request.url.path, contains('/cosmwasm/wasm/v1/contract/$contract/smart/'));
+      expect(request.url.path,
+          contains('/cosmwasm/wasm/v1/contract/$contract/smart/'));
       return http.Response(
         jsonEncode(<String, dynamic>{
           'data': <String, dynamic>{
@@ -82,7 +84,9 @@ void main() {
   test('getHandles parses a null name (address owns nothing)', () async {
     final mock = MockClient((request) async {
       return http.Response(
-        jsonEncode(<String, dynamic>{'data': <String, dynamic>{'name': null}}),
+        jsonEncode(<String, dynamic>{
+          'data': <String, dynamic>{'name': null}
+        }),
         200,
       );
     });
diff --git a/packages/dart/test/signing_client_test.dart b/packages/dart/test/signing_client_test.dart
index 4e328fd..363a036 100644
--- a/packages/dart/test/signing_client_test.dart
+++ b/packages/dart/test/signing_client_test.dart
@@ -56,8 +56,9 @@ class RecordingSigner implements SafHandleSigner {
     // Path: /cosmwasm/wasm/v1/contract/{addr}/smart/{b64}
     final segments = request.url.pathSegments;
     final encoded = segments.last;
-    final decoded = jsonDecode(utf8.decode(base64.decode(Uri.decodeComponent(encoded))))
-        as Map<String, dynamic>;
+    final decoded =
+        jsonDecode(utf8.decode(base64.decode(Uri.decodeComponent(encoded))))
+            as Map<String, dynamic>;
     if (decoded.containsKey('config')) {
       configQueries++;
       return http.Response(jsonEncode(<String, dynamic>{'data': config}), 200,
@@ -68,7 +69,8 @@ class RecordingSigner implements SafHandleSigner {
   return (client: client, configQueries: () => configQueries);
 }
 
-SafHandleSigningClient makeClient(RecordingSigner signer, http.Client httpClient) {
+SafHandleSigningClient makeClient(
+    RecordingSigner signer, http.Client httpClient) {
   return SafHandleSigningClient(
     signer: signer,
     restEndpoint: 'https://rest.example',
@@ -79,7 +81,8 @@ SafHandleSigningClient makeClient(RecordingSigner signer, http.Client httpClient
 
 void main() {
   group('registerName', () {
-    test('normalizes the name and attaches the exact fee from config', () async {
+    test('normalizes the name and attaches the exact fee from config',
+        () async {
       final signer = RecordingSigner();
       final rest = fakeRest();
       final client = makeClient(signer, rest.client);
@@ -128,7 +131,8 @@ void main() {
   });
 
   group('transfer / release (no funds)', () {
-    test('transferName sends normalized name and new owner with no funds', () async {
+    test('transferName sends normalized name and new owner with no funds',
+        () async {
       final signer = RecordingSigner();
       final client = makeClient(signer, fakeRest().client);
 
diff --git a/packages/dart/test/validation_test.dart b/packages/dart/test/validation_test.dart
index 87e63a3..423a495 100644
--- a/packages/dart/test/validation_test.dart
+++ b/packages/dart/test/validation_test.dart
@@ -5,7 +5,8 @@ import 'package:test/test.dart';
 // contract's validation.rs tests. If these drift from the contract,
 // registrations built by the SDK would be rejected on-chain — so parity matters.
 
-const addr = 'addr_safro10fmuatrxlcj6644vang5fuwyvdldfjss4tqqvemw9upm0qpn54esxr94v2';
+const addr =
+    'addr_safro10fmuatrxlcj6644vang5fuwyvdldfjss4tqqvemw9upm0qpn54esxr94v2';
 
 void main() {
   group('normalizeName', () {
@@ -109,16 +110,18 @@ void main() {
 
   group('parseInput', () {
     test("routes '@name' to the name lane, normalized", () {
-      expect(parseInput('@john'), const ParsedInput(HandleKind.name, 'john.saf'));
-      expect(parseInput('  @Alice '), const ParsedInput(HandleKind.name, 'alice.saf'));
+      expect(
+          parseInput('@john'), const ParsedInput(HandleKind.name, 'john.saf'));
+      expect(parseInput('  @Alice '),
+          const ParsedInput(HandleKind.name, 'alice.saf'));
     });
 
     test('rejects an all-digit input as invalidInput', () {
       for (final input in <String>['243899123456', '123']) {
         expect(
           () => parseInput(input),
-          throwsA(isA<SafHandleError>().having(
-              (e) => e.code, 'code', SafHandleErrorCode.invalidInput)),
+          throwsA(isA<SafHandleError>()
+              .having((e) => e.code, 'code', SafHandleErrorCode.invalidInput)),
           reason: 'input: $input',
         );
       }