vyper contract verification: bugfix and improvements (#896)

* change hint and enable contract name field

* fix form re-submiting

* update screenshot

* change vyper multi part method

* vyper standard input json method

* fix required error message for sources field

* pin api host

* fix locked form

* clean up

pages/address/[hash]/contract_verification.tsx

@@ -5,6 +5,7 @@ import React from 'react';
 
 import getSeo from 'lib/next/address/getSeo';
 import ContractVerification from 'ui/pages/ContractVerification';
+import Page from 'ui/shared/Page/Page';
 
 const ContractVerificationPage: NextPage<RoutedQuery<'/address/[hash]/contract_verification'>> =
 ({ hash }: RoutedQuery<'/address/[hash]/contract_verification'>) => {
@@ -16,7 +17,9 @@ const ContractVerificationPage: NextPage<RoutedQuery<'/address/[hash]/contract_v
         <title>{ title }</title>
         <meta name="description" content={ description }/>
       </Head>
-      <ContractVerification/>
+      <Page>
+        <ContractVerification/>
+      </Page>
     </>
   );
 };

types/api/contract.ts

@@ -120,7 +120,8 @@ export type SmartContractQueryMethodRead = SmartContractQueryMethodReadSuccess |
 
 // VERIFICATION
 
-export type SmartContractVerificationMethod = 'flattened-code' | 'standard-input' | 'sourcify' | 'multi-part' | 'vyper-code' | 'vyper-multi-part';
+export type SmartContractVerificationMethod = 'flattened-code' | 'standard-input' | 'sourcify' | 'multi-part'
+| 'vyper-code' | 'vyper-multi-part' | 'vyper-standard-input';
 
 export interface SmartContractVerificationConfigRaw {
   solidity_compiler_versions: Array<string>;
@@ -145,6 +146,7 @@ export type SmartContractVerificationResponse = {
 export interface SmartContractVerificationError {
   contract_source_code?: Array<string>;
   files?: Array<string>;
+  interfaces?: Array<string>;
   compiler_version?: Array<string>;
   constructor_arguments?: Array<string>;
   name?: Array<string>;

ui/contractVerification/ContractVerificationForm.pw.tsx

@@ -37,6 +37,7 @@ const formConfig: SmartContractVerificationConfig = {
     'multi-part',
     'vyper-code',
     'vyper-multi-part',
+    'vyper-standard-input',
   ],
   vyper_compiler_versions: [
     'v0.3.7+commit.6020b8bb',
@@ -181,3 +182,18 @@ test('vyper multi-part method', async({ mount, page }) => {
 
   await expect(component).toHaveScreenshot();
 });
+
+test('vyper vyper-standard-input method', async({ mount, page }) => {
+  const component = await mount(
+    <TestApp>
+      <ContractVerificationForm config={ formConfig } hash={ hash }/>
+    </TestApp>,
+    { hooksConfig },
+  );
+
+  await component.getByLabel(/verification method/i).focus();
+  await component.getByLabel(/verification method/i).type('vyper');
+  await page.getByRole('button', { name: /standard json input/i }).click();
+
+  await expect(component).toHaveScreenshot();
+});

ui/contractVerification/ContractVerificationForm.tsx

@@ -9,6 +9,7 @@ import type { SocketMessage } from 'lib/socket/types';
 import type { SmartContractVerificationMethod, SmartContractVerificationConfig } from 'types/api/contract';
 
 import useApiFetch from 'lib/api/useApiFetch';
+import delay from 'lib/delay';
 import useToast from 'lib/hooks/useToast';
 import useSocketChannel from 'lib/socket/useSocketChannel';
 import useSocketMessage from 'lib/socket/useSocketMessage';
@@ -20,6 +21,7 @@ import ContractVerificationSourcify from './methods/ContractVerificationSourcify
 import ContractVerificationStandardInput from './methods/ContractVerificationStandardInput';
 import ContractVerificationVyperContract from './methods/ContractVerificationVyperContract';
 import ContractVerificationVyperMultiPartFile from './methods/ContractVerificationVyperMultiPartFile';
+import ContractVerificationVyperStandardInput from './methods/ContractVerificationVyperStandardInput';
 import { prepareRequestBody, formatSocketErrors, getDefaultValues } from './utils';
 
 interface Props {
@@ -59,10 +61,11 @@ const ContractVerificationForm = ({ method: methodFromQuery, config, hash }: Pro
     });
   }, [ apiFetch, hash ]);
 
-  const handleNewSocketMessage: SocketMessage.ContractVerification['handler'] = React.useCallback((payload) => {
+  const handleNewSocketMessage: SocketMessage.ContractVerification['handler'] = React.useCallback(async(payload) => {
     if (payload.status === 'error') {
       const errors = formatSocketErrors(payload.errors);
-      errors.forEach(([ field, error ]) => setError(field, error));
+      errors.filter(Boolean).forEach(([ field, error ]) => setError(field, error));
+      await delay(100); // have to wait a little bit, otherwise isSubmitting status will not be updated
       submitPromiseResolver.current?.(null);
       return;
     }
@@ -121,6 +124,7 @@ const ContractVerificationForm = ({ method: methodFromQuery, config, hash }: Pro
       'multi-part': <ContractVerificationMultiPartFile/>,
       'vyper-code': <ContractVerificationVyperContract config={ config }/>,
       'vyper-multi-part': <ContractVerificationVyperMultiPartFile/>,
+      'vyper-standard-input': <ContractVerificationVyperStandardInput/>,
     };
   }, [ config ]);
   const method = watch('method');

ui/contractVerification/fields/ContractVerificationFieldEvmVersion.tsx

@@ -53,7 +53,15 @@ const ContractVerificationFieldEvmVersion = ({ isVyper }: Props) => {
       />
       <>
         <span>The EVM version the contract is written for. If the bytecode does not match the version, we try to verify using the latest EVM version. </span>
-        <Link href="https://forum.poa.network/t/smart-contract-verification-evm-version-details/2318" target="_blank">EVM version details</Link>
+        <Link
+          href={ isVyper ?
+            'https://docs.vyperlang.org/en/stable/compiling-a-contract.html#target-options' :
+            'https://docs.soliditylang.org/en/latest/using-the-compiler.html#target-options'
+          }
+          target="_blank"
+        >
+          EVM version details
+        </Link>
       </>
     </ContractVerificationFormRow>
   );

ui/contractVerification/fields/ContractVerificationFieldMethod.tsx

@@ -82,6 +82,19 @@ const ContractVerificationFieldMethod = ({ control, isDisabled, methods }: Props
         return <ListItem key={ method }>Verification of Vyper contract.</ListItem>;
       case 'vyper-multi-part':
         return <ListItem key={ method }>Verification of multi-part Vyper files.</ListItem>;
+      case 'vyper-standard-input':
+        return (
+          <ListItem key={ method }>
+            <span>Verification of Vyper contract using </span>
+            <Link
+              href="https://docs.vyperlang.org/en/stable/compiling-a-contract.html#compiler-input-and-output-json-description"
+              target="_blank"
+            >
+              Standard input JSON
+            </Link>
+            <span> file.</span>
+          </ListItem>
+        );
     }
   }, []);
 

ui/contractVerification/fields/ContractVerificationFieldSources.tsx

@@ -16,16 +16,26 @@ import ContractVerificationFormRow from '../ContractVerificationFormRow';
 type FileTypes = '.sol' | '.yul' | '.json' | '.vy'
 
 interface Props {
+  name?: 'sources' | 'interfaces';
   fileTypes: Array<FileTypes>;
   multiple?: boolean;
+  required?: boolean;
   title: string;
-  hint: string;
+  hint: string | React.ReactNode;
 }
 
-const ContractVerificationFieldSources = ({ fileTypes, multiple, title, hint }: Props) => {
+const ContractVerificationFieldSources = ({ fileTypes, multiple, required, title, hint, name = 'sources' }: Props) => {
   const { setValue, getValues, control, formState, clearErrors } = useFormContext<FormFields>();
 
-  const error = 'sources' in formState.errors ? formState.errors.sources : undefined;
+  const error = (() => {
+    if (name === 'sources' && 'sources' in formState.errors) {
+      return formState.errors.sources;
+    }
+
+    if (name === 'interfaces' && 'interfaces' in formState.errors) {
+      return formState.errors.interfaces;
+    }
+  })();
   const commonError = !error?.type?.startsWith('file_') ? error : undefined;
   const fileError = error?.type?.startsWith('file_') ? error : undefined;
 
@@ -34,12 +44,12 @@ const ContractVerificationFieldSources = ({ fileTypes, multiple, title, hint }:
       return;
     }
 
-    const value = getValues('sources').slice();
+    const value = getValues(name).slice();
     value.splice(index, 1);
-    setValue('sources', value);
-    clearErrors('sources');
+    setValue(name, value);
+    clearErrors(name);
 
-  }, [ getValues, clearErrors, setValue ]);
+  }, [ getValues, name, setValue, clearErrors ]);
 
   const renderUploadButton = React.useCallback(() => {
     return (
@@ -79,11 +89,24 @@ const ContractVerificationFieldSources = ({ fileTypes, multiple, title, hint }:
     );
   }, [ formState.isSubmitting, handleFileRemove, fileError ]);
 
-  const renderControl = React.useCallback(({ field }: {field: ControllerRenderProps<FormFields, 'sources'>}) => {
+  const renderControl = React.useCallback(({ field }: {field: ControllerRenderProps<FormFields, typeof name>}) => {
     const hasValue = field.value && field.value.length > 0;
+
+    const errorElement = (() => {
+      if (commonError?.type === 'required') {
+        return <FieldError message="Field is required"/>;
+      }
+
+      if (commonError?.message) {
+        return <FieldError message={ commonError.message }/>;
+      }
+
+      return null;
+    })();
+
     return (
       <>
-        <FileInput<FormFields, 'sources'> accept={ fileTypes.join(',') } multiple={ multiple } field={ field }>
+        <FileInput<FormFields, typeof name> accept={ fileTypes.join(',') } multiple={ multiple } field={ field }>
           { ({ onChange }) => (
             <Flex
               flexDir="column"
@@ -97,12 +120,12 @@ const ContractVerificationFieldSources = ({ fileTypes, multiple, title, hint }:
             </Flex>
           ) }
         </FileInput>
-        { commonError?.message && <FieldError message={ commonError.type === 'required' ? 'Field is required' : commonError.message }/> }
+        { errorElement }
       </>
     );
   }, [ fileTypes, multiple, commonError, formState.isSubmitting, renderFiles, renderUploadButton ]);
 
-  const validateFileType = React.useCallback(async(value: FieldPathValue<FormFields, 'sources'>): Promise<ValidateResult> => {
+  const validateFileType = React.useCallback(async(value: FieldPathValue<FormFields, typeof name>): Promise<ValidateResult> => {
     if (Array.isArray(value)) {
       const errorText = `Wrong file type. Allowed files types are ${ fileTypes.join(',') }.`;
       const errors = value.map(({ name }) => fileTypes.some((ext) => name.endsWith(ext)) ? '' : errorText);
@@ -113,7 +136,7 @@ const ContractVerificationFieldSources = ({ fileTypes, multiple, title, hint }:
     return true;
   }, [ fileTypes ]);
 
-  const validateFileSize = React.useCallback(async(value: FieldPathValue<FormFields, 'sources'>): Promise<ValidateResult> => {
+  const validateFileSize = React.useCallback(async(value: FieldPathValue<FormFields, typeof name>): Promise<ValidateResult> => {
     if (Array.isArray(value)) {
       const FILE_SIZE_LIMIT = 20 * Mb;
       const errors = value.map(({ size }) => size > FILE_SIZE_LIMIT ? 'File is too big. Maximum size is 20 Mb.' : '');
@@ -124,7 +147,7 @@ const ContractVerificationFieldSources = ({ fileTypes, multiple, title, hint }:
     return true;
   }, []);
 
-  const validateQuantity = React.useCallback(async(value: FieldPathValue<FormFields, 'sources'>): Promise<ValidateResult> => {
+  const validateQuantity = React.useCallback(async(value: FieldPathValue<FormFields, typeof name>): Promise<ValidateResult> => {
     if (!multiple && Array.isArray(value) && value.length > 1) {
       return 'You can upload only one file';
     }
@@ -133,18 +156,18 @@ const ContractVerificationFieldSources = ({ fileTypes, multiple, title, hint }:
   }, [ multiple ]);
 
   const rules = React.useMemo(() => ({
-    required: true,
+    required,
     validate: {
       file_type: validateFileType,
       file_size: validateFileSize,
       quantity: validateQuantity,
     },
-  }), [ validateFileSize, validateFileType, validateQuantity ]);
+  }), [ validateFileSize, validateFileType, validateQuantity, required ]);
 
   return (
     <ContractVerificationFormRow>
       <Controller
-        name="sources"
+        name={ name }
         control={ control }
         render={ renderControl }
         rules={ rules }

ui/contractVerification/methods/ContractVerificationMultiPartFile.tsx

@@ -18,6 +18,7 @@ const ContractVerificationMultiPartFile = () => {
       <ContractVerificationFieldSources
         fileTypes={ FILE_TYPES }
         multiple
+        required
         title="Sources *.sol or *.yul files"
         hint="Upload all Solidity or Yul contract source files."
       />

ui/contractVerification/methods/ContractVerificationSourcify.tsx

@@ -12,6 +12,7 @@ const ContractVerificationSourcify = () => {
       <ContractVerificationFieldSources
         fileTypes={ FILE_TYPES }
         multiple
+        required
         title="Sources and Metadata JSON"
         hint="Upload all Solidity contract source files and JSON metadata file(s) created during contract compilation."
       />

ui/contractVerification/methods/ContractVerificationStandardInput.tsx

@@ -19,6 +19,7 @@ const ContractVerificationStandardInput = ({ config }: { config: SmartContractVe
         fileTypes={ FILE_TYPES }
         title="Standard Input JSON"
         hint="Upload the standard input JSON file created during contract compilation."
+        required
       />
       { !config?.is_rust_verifier_microservice_enabled && <ContractVerificationFieldAutodetectArgs/> }
     </ContractVerificationMethod>

ui/contractVerification/methods/ContractVerificationVyperContract.tsx

@@ -12,7 +12,7 @@ import ContractVerificationFieldName from '../fields/ContractVerificationFieldNa
 const ContractVerificationVyperContract = ({ config }: { config: SmartContractVerificationConfig }) => {
   return (
     <ContractVerificationMethod title="Contract verification via Vyper (contract)">
-      <ContractVerificationFieldName hint="Must match the name specified in the code." isReadOnly/>
+      <ContractVerificationFieldName hint="The contract name is the name assigned to the verified contract in Blockscout."/>
       <ContractVerificationFieldCompiler isVyper/>
       { config?.is_rust_verifier_microservice_enabled && <ContractVerificationFieldEvmVersion isVyper/> }
       <ContractVerificationFieldCode isVyper/>

ui/contractVerification/methods/ContractVerificationVyperMultiPartFile.tsx

+import { Link } from '@chakra-ui/react';
 import React from 'react';
 
 import ContractVerificationMethod from '../ContractVerificationMethod';
@@ -5,18 +6,39 @@ import ContractVerificationFieldCompiler from '../fields/ContractVerificationFie
 import ContractVerificationFieldEvmVersion from '../fields/ContractVerificationFieldEvmVersion';
 import ContractVerificationFieldSources from '../fields/ContractVerificationFieldSources';
 
-const FILE_TYPES = [ '.vy' as const ];
+const MAIN_SOURCES_TYPES = [ '.vy' as const ];
+const INTERFACE_TYPES = [ '.vy' as const, '.json' as const ];
 
 const ContractVerificationVyperMultiPartFile = () => {
+
+  const interfacesHint = (
+    <>
+      <span>Add any </span>
+      <Link href="https://docs.vyperlang.org/en/stable/interfaces.html" target="_blank">required interfaces</Link>
+      <span> for the main compiled contract.</span>
+    </>
+  );
+
   return (
     <ContractVerificationMethod title="Contract verification via Vyper (multi-part files)">
       <ContractVerificationFieldCompiler isVyper/>
       <ContractVerificationFieldEvmVersion isVyper/>
       <ContractVerificationFieldSources
-        fileTypes={ FILE_TYPES }
+        name="sources"
+        fileTypes={ MAIN_SOURCES_TYPES }
+        title="Upload main *.vy source"
+        hint={ `
+          Primary compiled Vyper contract. 
+          Only add the main contract here whose bytecode has been deployed, all other files can be uploaded to the interfaces box below.
+        ` }
+        required
+      />
+      <ContractVerificationFieldSources
+        name="interfaces"
+        fileTypes={ INTERFACE_TYPES }
         multiple
-        title="Sources *.vy files"
-        hint="Upload all Vyper contract source files."
+        title="Interfaces (.vy or .json)"
+        hint={ interfacesHint }
       />
     </ContractVerificationMethod>
   );

ui/contractVerification/methods/ContractVerificationVyperStandardInput.tsx

+import React from 'react';
+
+import ContractVerificationMethod from '../ContractVerificationMethod';
+import ContractVerificationFieldCompiler from '../fields/ContractVerificationFieldCompiler';
+import ContractVerificationFieldSources from '../fields/ContractVerificationFieldSources';
+
+const FILE_TYPES = [ '.json' as const ];
+
+const ContractVerificationVyperStandardInput = () => {
+  return (
+    <ContractVerificationMethod title="Contract verification via Vyper (standard JSON input) ">
+      <ContractVerificationFieldCompiler isVyper/>
+      <ContractVerificationFieldSources
+        fileTypes={ FILE_TYPES }
+        title="Standard Input JSON"
+        hint="Upload the standard input JSON file created during contract compilation."
+        required
+      />
+    </ContractVerificationMethod>
+  );
+};
+
+export default React.memo(ContractVerificationVyperStandardInput);

ui/contractVerification/types.ts

@@ -64,7 +64,14 @@ export interface FormFieldsVyperMultiPartFile {
   compiler: Option | null;
   evm_version: Option | null;
   sources: Array<File>;
+  interfaces: Array<File>;
+}
+
+export interface FormFieldsVyperStandardInput {
+  method: MethodOption;
+  compiler: Option | null;
+  sources: Array<File>;
 }
 
 export type FormFields = FormFieldsFlattenSourceCode | FormFieldsStandardInput | FormFieldsSourcify |
-FormFieldsMultiPartFile | FormFieldsVyperContract | FormFieldsVyperMultiPartFile;
+FormFieldsMultiPartFile | FormFieldsVyperContract | FormFieldsVyperMultiPartFile | FormFieldsVyperStandardInput;

ui/contractVerification/utils.ts

@@ -9,6 +9,7 @@ import type {
   FormFieldsStandardInput,
   FormFieldsVyperContract,
   FormFieldsVyperMultiPartFile,
+  FormFieldsVyperStandardInput,
 } from './types';
 import type { SmartContractVerificationMethod, SmartContractVerificationError, SmartContractVerificationConfig } from 'types/api/contract';
 
@@ -21,6 +22,7 @@ export const SUPPORTED_VERIFICATION_METHODS: Array<SmartContractVerificationMeth
   'multi-part',
   'vyper-code',
   'vyper-multi-part',
+  'vyper-standard-input',
 ];
 
 export const METHOD_LABELS: Record<SmartContractVerificationMethod, string> = {
@@ -30,6 +32,7 @@ export const METHOD_LABELS: Record<SmartContractVerificationMethod, string> = {
   'multi-part': 'Solidity (Multi-part files)',
   'vyper-code': 'Vyper (Contract)',
   'vyper-multi-part': 'Vyper (Multi-part files)',
+  'vyper-standard-input': 'Vyper (Standard JSON input)',
 };
 
 export const DEFAULT_VALUES: Record<SmartContractVerificationMethod, FormFields> = {
@@ -84,7 +87,7 @@ export const DEFAULT_VALUES: Record<SmartContractVerificationMethod, FormFields>
       value: 'vyper-code' as const,
       label: METHOD_LABELS['vyper-code'],
     },
-    name: 'Vyper_contract',
+    name: '',
     compiler: null,
     evm_version: null,
     code: '',
@@ -99,6 +102,14 @@ export const DEFAULT_VALUES: Record<SmartContractVerificationMethod, FormFields>
     evm_version: null,
     sources: [],
   },
+  'vyper-standard-input': {
+    method: {
+      value: 'vyper-standard-input' as const,
+      label: METHOD_LABELS['vyper-standard-input'],
+    },
+    compiler: null,
+    sources: [],
+  },
 };
 
 export function getDefaultValues(method: SmartContractVerificationMethod, config: SmartContractVerificationConfig) {
@@ -169,7 +180,7 @@ export function prepareRequestBody(data: FormFields): FetchParams['body'] {
       body.set('contract_name', _data.name);
       body.set('autodetect_constructor_args', String(Boolean(_data.autodetect_constructor_args)));
       body.set('constructor_args', _data.constructor_args);
-      addFilesToFormData(body, _data.sources);
+      addFilesToFormData(body, _data.sources, 'files');
 
       return body;
     }
@@ -177,7 +188,7 @@ export function prepareRequestBody(data: FormFields): FetchParams['body'] {
     case 'sourcify': {
       const _data = data as FormFieldsSourcify;
       const body = new FormData();
-      addFilesToFormData(body, _data.sources);
+      addFilesToFormData(body, _data.sources, 'files');
       _data.contract_index && body.set('chosen_contract_index', _data.contract_index.value);
 
       return body;
@@ -194,7 +205,7 @@ export function prepareRequestBody(data: FormFields): FetchParams['body'] {
 
       const libraries = reduceLibrariesArray(_data.libraries);
       libraries && body.set('libraries', JSON.stringify(libraries));
-      addFilesToFormData(body, _data.sources);
+      addFilesToFormData(body, _data.sources, 'files');
 
       return body;
     }
@@ -217,7 +228,18 @@ export function prepareRequestBody(data: FormFields): FetchParams['body'] {
       const body = new FormData();
       _data.compiler && body.set('compiler_version', _data.compiler.value);
       _data.evm_version && body.set('evm_version', _data.evm_version.value);
-      addFilesToFormData(body, _data.sources);
+      addFilesToFormData(body, _data.sources, 'files');
+      addFilesToFormData(body, _data.interfaces, 'interfaces');
+
+      return body;
+    }
+
+    case 'vyper-standard-input': {
+      const _data = data as FormFieldsVyperStandardInput;
+
+      const body = new FormData();
+      _data.compiler && body.set('compiler_version', _data.compiler.value);
+      addFilesToFormData(body, _data.sources, 'files');
 
       return body;
     }
@@ -239,27 +261,33 @@ function reduceLibrariesArray(libraries: Array<ContractLibrary> | undefined) {
   }, {});
 }
 
-function addFilesToFormData(body: FormData, files: Array<File> | undefined) {
+function addFilesToFormData(body: FormData, files: Array<File> | undefined, fieldName: 'files' | 'interfaces') {
   if (!files) {
     return;
   }
 
   for (let index = 0; index < files.length; index++) {
     const file = files[index];
-    body.set(`files[${ index }]`, file, file.name);
+    body.set(`${ fieldName }[${ index }]`, file, file.name);
   }
 }
 
 const API_ERROR_TO_FORM_FIELD: Record<keyof SmartContractVerificationError, FieldPath<FormFields>> = {
   contract_source_code: 'code',
   files: 'sources',
+  interfaces: 'interfaces',
   compiler_version: 'compiler',
   constructor_arguments: 'constructor_args',
   name: 'name',
 };
 
-export function formatSocketErrors(errors: SmartContractVerificationError): Array<[FieldPath<FormFields>, ErrorOption]> {
+export function formatSocketErrors(errors: SmartContractVerificationError): Array<[FieldPath<FormFields>, ErrorOption] | undefined> {
   return Object.entries(errors).map(([ key, value ]) => {
-    return [ API_ERROR_TO_FORM_FIELD[key as keyof SmartContractVerificationError], { message: value.join(',') } ];
+    const _key = key as keyof SmartContractVerificationError;
+    if (!API_ERROR_TO_FORM_FIELD[_key]) {
+      return;
+    }
+
+    return [ API_ERROR_TO_FORM_FIELD[_key], { message: value.join(',') } ];
   });
 }

ui/pages/ContractVerification.tsx

@@ -15,7 +15,6 @@ import ContentLoader from 'ui/shared/ContentLoader';
 import CopyToClipboard from 'ui/shared/CopyToClipboard';
 import DataFetchAlert from 'ui/shared/DataFetchAlert';
 import HashStringShortenDynamic from 'ui/shared/HashStringShortenDynamic';
-import Page from 'ui/shared/Page/Page';
 import PageTitle from 'ui/shared/Page/PageTitle';
 
 const ContractVerification = () => {
@@ -96,7 +95,7 @@ const ContractVerification = () => {
   }, [ appProps.referrer ]);
 
   return (
-    <Page>
+    <>
       <PageTitle
         title="New smart contract verification"
         backLink={ backLink }
@@ -111,7 +110,7 @@ const ContractVerification = () => {
         </Address>
       ) }
       { content }
-    </Page>
+    </>
   );
 };