diff --git a/content/sdk/10.js/00.ethers/05.api/10.v5/00.providers/01.provider.md b/content/sdk/10.js/00.ethers/05.api/10.v5/00.providers/01.provider.md
index 9c1df100..90c94f52 100644
--- a/content/sdk/10.js/00.ethers/05.api/10.v5/00.providers/01.provider.md
+++ b/content/sdk/10.js/00.ethers/05.api/10.v5/00.providers/01.provider.md
@@ -43,10 +43,8 @@ Returns an estimated [`Fee`](/sdk/js/ethers/api/v5/types#fee) for requested tran
 async estimateFee(transaction: TransactionRequest): Promise<Fee>
 ```
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const fee = await provider.estimateFee({
@@ -54,7 +52,7 @@ const fee = await provider.estimateFee({
   to: "0xa61464658AfeAf65CccaaFD3a512b69A83B77618",
   value: `0x${BigNumber.from(7_000_000_000).toString(16)}`,
 });
-console.log(`Fee: ${toJSON(fee)}`);
+console.log(`Fee: ${utils.toJSON(fee)}`);
 ```
 
 ### `estimateGas`
@@ -131,7 +129,7 @@ async estimateGasL1(transaction: TransactionRequest): Promise<BigNumber>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const gasL1 = await provider.estimateGasL1({
@@ -266,7 +264,7 @@ async estimateL1ToL2Execute(transaction: {
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const gasL1ToL2 = await provider.estimateL1ToL2Execute({
@@ -297,14 +295,12 @@ async getAllAccountBalances(address: Address): Promise<BalancesMap>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const balances = await provider.getAllAccountBalances("0x36615Cf349d7F6344891B1e7CA7C72883F5dc049");
-console.log(`All balances: ${toJSON(balances)}`);
+console.log(`All balances: ${utils.toJSON(balances)}`);
 ```
 
 ### `getBalance`
@@ -328,7 +324,7 @@ async getBalance(address: Address, blockTag?: BlockTag, tokenAddress?: Address)
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const account = "0x36615Cf349d7F6344891B1e7CA7C72883F5dc049";
@@ -350,7 +346,7 @@ async getBaseTokenContractAddress(): Promise<Address>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Base token: ${await provider.getBaseTokenContractAddress()}`);
@@ -366,13 +362,11 @@ async getBlock(blockHashOrBlockTag: BlockTag | string | Promise<BlockTag | strin
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
-console.log(`Block: ${toJSON(await provider.getBlock("latest", true))}`);
+console.log(`Block: ${utils.toJSON(await provider.getBlock("latest", true))}`);
 ```
 
 ### `getBlockDetails`
@@ -393,13 +387,11 @@ async getBlockDetails(number:number): Promise<BlockDetails>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
-console.log(`Block details: ${toJSON(await provider.getBlockDetails(90_000))}`);
+console.log(`Block details: ${utils.toJSON(await provider.getBlockDetails(90_000))}`);
 ```
 
 ### `getBridgehubContractAddress`
@@ -415,7 +407,7 @@ async getBridgehubContractAddress(): Promise<Address>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Bridgehub: ${await provider.getBridgehubContractAddress()}`);
@@ -440,7 +432,7 @@ async getBytecodeByHash(bytecodeHash: BytesLike): Promise<Uint8Array>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 // Bytecode hash can be computed by following these steps:
 // const testnetPaymasterBytecode = await provider.getCode(await provider.getTestnetPaymasterAddress());
@@ -472,8 +464,6 @@ async getConfirmedTokens(start: number = 0, limit: number = 255): Promise<Token[
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
 import { Provider, types, utils } from "zksync-ethers";
 
@@ -498,14 +488,12 @@ async getContractAccountInfo(address:Address): Promise<ContractAccountInfo>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const tokenAddress = "0x927488F48ffbc32112F1fF721759649A89721F8F"; // Crown token which can be minted for free
-console.log(`Contract account info: ${toJSON(await provider.getContractAccountInfo(tokenAddress))}`);
+console.log(`Contract account info: ${utils.toJSON(await provider.getContractAccountInfo(tokenAddress))}`);
 ```
 
 ### `getDefaultBridgeAddresses`
@@ -525,13 +513,11 @@ getDefaultBridgeAddresses(): Promise<{
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
-console.log(`Default bridges: ${toJSON(await provider.getDefaultBridgeAddresses())}`);
+console.log(`Default bridges: ${utils.toJSON(await provider.getDefaultBridgeAddresses())}`);
 ```
 
 ### `connectL2Bridge`
@@ -552,7 +538,7 @@ async connectL2Bridge(address: Address): Promise<Il2SharedBridge | Il2Bridge>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const l2Bridge = await provider.connectL2Bridge("<L2_BRIDGE_ADDRESS>");
@@ -575,7 +561,7 @@ async isL2BridgeLegacy(address: Address): Promise<boolean>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const isBridgeLegacy = await provider.isL2BridgeLegacy("<L2_BRIDGE_ADDRESS>");
@@ -599,7 +585,7 @@ static getDefaultProvider(zksyncNetwork: ZkSyncNetwork = ZkSyncNetwork.Localhost
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const providerMainnet = Provider.getDefaultProvider(types.Network.Mainnet);
 const providerTestnet = Provider.getDefaultProvider(types.Network.Sepolia);
@@ -619,8 +605,6 @@ async getFeeParams(): Promise<FeeParams>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
 import { Provider, types, utils } from "zksync-ethers";
 
@@ -668,7 +652,7 @@ static override getFormatter(): Formatter
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const formatter = Provider.getFormatter();
 ```
@@ -684,7 +668,7 @@ async getGasPrice(): Promise<BigNumber>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Gas price: ${await provider.getGasPrice()}`);
@@ -709,14 +693,12 @@ async getL1BatchBlockRange(l1BatchNumber: number): Promise<[number, number] | nu
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const l1BatchNumber = await provider.getL1BatchNumber();
-console.log(`L1 batch block range: ${toJSON(await provider.getL1BatchBlockRange(l1BatchNumber))}`);
+console.log(`L1 batch block range: ${utils.toJSON(await provider.getL1BatchBlockRange(l1BatchNumber))}`);
 ```
 
 ### `getL1BatchDetails`
@@ -737,14 +719,12 @@ async getL1BatchDetails(number: number): Promise<BatchDetails>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const l1BatchNumber = await provider.getL1BatchNumber();
-console.log(`L1 batch details: ${toJSON(await provider.getL1BatchDetails(l1BatchNumber))}`);
+console.log(`L1 batch details: ${utils.toJSON(await provider.getL1BatchDetails(l1BatchNumber))}`);
 ```
 
 ### `getL1BatchNumber`
@@ -760,7 +740,7 @@ async getL1BatchNumber(): Promise<number>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`L1 batch number: ${await provider.getL1BatchNumber()}`);
@@ -782,17 +762,15 @@ async getL2TransactionFromPriorityOp(l1TxResponse: ethers.TransactionResponse):
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const ethProvider = ethers.getDefaultProvider("sepolia");
 const l1Tx = "0xcca5411f3e514052f4a4ae1c2020badec6e0998adb52c09959c5f5ff15fba3a8";
 const l1TxResponse = await ethProvider.getTransaction(l1Tx);
 if (l1TxResponse) {
-  console.log(`Tx: ${toJSON(await provider.getL2TransactionFromPriorityOp(l1TxResponse))}`);
+  console.log(`Tx: ${utils.toJSON(await provider.getL2TransactionFromPriorityOp(l1TxResponse))}`);
 }
 ```
 
@@ -815,16 +793,14 @@ async getLogProof(txHash: BytesLike, index ? : number): Promise<MessageProof | n
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 // Any L2 -> L1 transaction can be used.
 // In this case, withdrawal transaction is used.
 const tx = "0x2a1c6c74b184965c0cb015aae9ea134fd96215d2e4f4979cfec12563295f610e";
-console.log(`Log ${toJSON(await provider.getLogProof(tx, 0))}`);
+console.log(`Log ${utils.toJSON(await provider.getLogProof(tx, 0))}`);
 ```
 
 ### `getLogs`
@@ -844,13 +820,11 @@ getLogs(filter: Filter | FilterByBlockHash | Promise<Filter | FilterByBlockHash>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
-console.log(`Logs: ${toJSON(await provider.getLogs({ fromBlock: 0, toBlock: 5, address: utils.L2_ETH_TOKEN_ADDRESS }))}`);
+console.log(`Logs: ${utils.toJSON(await provider.getLogs({ fromBlock: 0, toBlock: 5, address: utils.L2_ETH_TOKEN_ADDRESS }))}`);
 ```
 
 ### `getMainContractAddress`
@@ -866,7 +840,7 @@ async getMainContractAddress(): Promise<Address>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Main contract: ${await provider.getMainContractAddress()}`);
@@ -894,8 +868,6 @@ async getPriorityOpConfirmation(txHash: string, index: number = 0): Promise<{
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
 import { Provider, types, utils } from "zksync-ethers";
 
@@ -923,17 +895,15 @@ async getPriorityOpResponse(l1TxResponse: ethers.TransactionResponse): Promise<P
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const ethProvider = ethers.getDefaultProvider("sepolia");
 const l1Tx = "0xcca5411f3e514052f4a4ae1c2020badec6e0998adb52c09959c5f5ff15fba3a8";
 const l1TxResponse = await ethProvider.getTransaction(l1Tx);
 if (l1TxResponse) {
-  console.log(`Tx: ${toJSON(await provider.getPriorityOpResponse(l1TxResponse))}`);
+  console.log(`Tx: ${utils.toJSON(await provider.getPriorityOpResponse(l1TxResponse))}`);
 }
 ```
 
@@ -958,8 +928,6 @@ async getProof(address: Address, keys: string[], l1BatchNumber: number): Promise
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
 import { Provider, types, utils } from "zksync-ethers";
 
@@ -984,7 +952,7 @@ const storageKey = ethers.utils.keccak256(concatenated);
 
 const l1BatchNumber = await provider.getL1BatchNumber();
 const storageProof = await provider.getProof(utils.NONCE_HOLDER_ADDRESS, [storageKey], l1BatchNumber);
-console.log(`Storage proof: ${toJSON(storageProof)}`);
+console.log(`Storage proof: ${utils.toJSON(storageProof)}`);
 ```
 
 ### `getProtocolVersion`
@@ -1006,7 +974,7 @@ async getProtocolVersion(id?: number): Promise<ProtocolVersion>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Protocol version: ${await provider.getProtocolVersion()}`);
@@ -1031,13 +999,11 @@ async getRawBlockTransactions(number: number): Promise<RawBlockTransaction[]>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
-console.log(`Raw block transactions: ${toJSON(await provider.getRawBlockTransactions(90_000))}`);
+console.log(`Raw block transactions: ${utils.toJSON(await provider.getRawBlockTransactions(90_000))}`);
 ```
 
 ### `getTestnetPaymasterAddress`
@@ -1052,7 +1018,7 @@ async getTestnetPaymasterAddress(): Promise<Address | null>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Testnet paymaster: ${await provider.getTestnetPaymasterAddress()}`);
@@ -1076,7 +1042,7 @@ async getTransaction(hash: string | Promise<string>): Promise<TransactionRespons
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 
@@ -1108,15 +1074,13 @@ async getTransactionDetails(txHash: BytesLike): Promise<TransactionDetails>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 
 const TX_HASH = "<YOUR_TX_HASH_ADDRESS>";
-console.log(`Transaction details: ${toJSON(await provider.getTransactionDetails(TX_HASH))}`);
+console.log(`Transaction details: ${utils.toJSON(await provider.getTransactionDetails(TX_HASH))}`);
 ```
 
 ### `getTransactionReceipt`
@@ -1137,14 +1101,12 @@ async getTransactionReceipt(transactionHash: string | Promise<string>): Promise<
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const TX_HASH = "<YOUR_TX_HASH_ADDRESS>";
-console.log(`Transaction receipt: ${toJSON(await provider.getTransactionReceipt(TX_HASH))}`);
+console.log(`Transaction receipt: ${utils.toJSON(await provider.getTransactionReceipt(TX_HASH))}`);
 ```
 
 ### `getTransactionStatus`
@@ -1163,15 +1125,13 @@ async getTransactionStatus(txHash: string): Promise<TransactionStatus>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 
 const TX_HASH = "<YOUR_TX_HASH_ADDRESS>";
-console.log(`Transaction status: ${toJSON(await provider.getTransactionStatus(TX_HASH))}`);
+console.log(`Transaction status: ${utils.toJSON(await provider.getTransactionStatus(TX_HASH))}`);
 ```
 
 ### `getTransferTx`
@@ -1329,7 +1289,7 @@ async isBaseToken(token: Address): Promise<string>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Is base token: ${await provider.isBaseToken("0x5C221E77624690fff6dd741493D735a17716c26B")}`);
@@ -1346,7 +1306,7 @@ async isEthBasedChain(): Promise<boolean>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Is ETH based chain: ${await provider.isEthBasedChain()}`);
@@ -1365,7 +1325,7 @@ async l1ChainId(): Promise<number>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`L1 chain ID: ${await provider.l1ChainId()}`);
@@ -1393,7 +1353,7 @@ async l1TokenAddress(token: Address): Promise<string>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`L1 token address: ${await provider.l1TokenAddress("0x3e7676937A7E96CFB7616f255b9AD9FF47363D4b")}`);
@@ -1422,7 +1382,7 @@ async l2TokenAddress(token: Address): Promise<string>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`L2 token address: ${await provider.l2TokenAddress("0x5C221E77624690fff6dd741493D735a17716c26B")}`);
@@ -1440,7 +1400,7 @@ async newBlockFilter(): Promise<BigNumber>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`New block filter: ${await provider.newBlockFilter()}`);
@@ -1490,7 +1450,7 @@ async newPendingTransactionsFilter(): Promise<BigNumber>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`New pending transaction filter: ${await provider.newPendingTransactionsFilter()}`);
@@ -1523,8 +1483,6 @@ async sendRawTransactionWithDetailedOutput(signedTx: string): Promise<Transactio
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
 import { Provider, Wallet, types, utils } from "zksync-ethers";
 import { ethers } from "ethers";
diff --git a/content/sdk/10.js/00.ethers/05.api/10.v5/00.providers/02.web3provider.md b/content/sdk/10.js/00.ethers/05.api/10.v5/00.providers/02.web3provider.md
index 13f4ff03..07edf812 100644
--- a/content/sdk/10.js/00.ethers/05.api/10.v5/00.providers/02.web3provider.md
+++ b/content/sdk/10.js/00.ethers/05.api/10.v5/00.providers/02.web3provider.md
@@ -839,20 +839,3 @@ const message = "Hello, ZKsync!";
 const signature = await signer.signMessage(message);
 console.log(`Signature: ${signature}`);
 ```
-
-## Appendix
-
-### toJSON
-
-Helper function to convert objects to JSON string with BigInt support.
-
-```ts
-function toJSON(object: any): string {
-  return JSON.stringify(object, (key, value) => {
-    if (typeof value === "bigint") {
-      return value.toString(); // Convert BigInt to string
-    }
-    return value;
-  });
-}
-```
diff --git a/content/sdk/10.js/00.ethers/05.api/10.v5/01.accounts/01.wallet.md b/content/sdk/10.js/00.ethers/05.api/10.v5/01.accounts/01.wallet.md
index 15bd23bf..8248dc33 100644
--- a/content/sdk/10.js/00.ethers/05.api/10.v5/01.accounts/01.wallet.md
+++ b/content/sdk/10.js/00.ethers/05.api/10.v5/01.accounts/01.wallet.md
@@ -1919,8 +1919,6 @@ async getPriorityOpConfirmation(txHash: string, index: number = 0): Promise<{
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
 import { Wallet, Provider, types, utils } from "zksync-ethers";
 import { ethers } from "ethers";
diff --git a/content/sdk/10.js/00.ethers/05.api/10.v5/01.accounts/03.l1signer.md b/content/sdk/10.js/00.ethers/05.api/10.v5/01.accounts/03.l1signer.md
index ce9cc61b..df37efc9 100644
--- a/content/sdk/10.js/00.ethers/05.api/10.v5/01.accounts/03.l1signer.md
+++ b/content/sdk/10.js/00.ethers/05.api/10.v5/01.accounts/03.l1signer.md
@@ -10,7 +10,7 @@ This class extends `ethers.providers.JsonRpcSigner` and so supports all the meth
 The easiest way to construct it is from an `Web3Provider` object.
 
 ```ts
-import { Provider, L1Signer, types } from "zksync-ethers";
+import { Provider, L1Signer, types, utils } from "zksync-ethers";
 import { ethers } from "ethers";
 
 const provider = new ethers.providers.Web3Provider(window.ethereum);
@@ -1073,8 +1073,6 @@ async getPriorityOpConfirmation(txHash: string, index: number = 0): Promise<{
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v5/providers/web3provider#tojson).
-
 ```ts
 import { Provider, L1Signer, types } from "zksync-ethers";
 import { ethers } from "ethers";
diff --git a/content/sdk/10.js/00.ethers/05.api/20.v6/00.providers/01.provider.md b/content/sdk/10.js/00.ethers/05.api/20.v6/00.providers/01.provider.md
index 79e4f0b6..ccd43f13 100644
--- a/content/sdk/10.js/00.ethers/05.api/20.v6/00.providers/01.provider.md
+++ b/content/sdk/10.js/00.ethers/05.api/20.v6/00.providers/01.provider.md
@@ -91,7 +91,7 @@ async estimateFee(transaction: TransactionRequest): Promise<Fee>
 **Example:**
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const fee = await provider.estimateFee({
@@ -99,7 +99,7 @@ const fee = await provider.estimateFee({
   to: "0xa61464658AfeAf65CccaaFD3a512b69A83B77618",
   value: `0x${BigInt(7_000_000_000).toString(16)}`,
 });
-console.log(`Fee: ${toJSON(fee)}`);
+console.log(`Fee: ${utils.toJSON(fee)}`);
 ```
 
 The `estimateFee` method estimates the fee required for a transaction. This is important for users to know how much they
@@ -154,7 +154,7 @@ async estimateGasL1(transaction: TransactionRequest): Promise<bigint>
 **Example:**
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const gasL1 = await provider.estimateGasL1({
@@ -289,7 +289,7 @@ async estimateL1ToL2Execute(transaction: {
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const gasL1ToL2 = await provider.estimateL1ToL2Execute({
@@ -320,14 +320,12 @@ async getAllAccountBalances(address: Address): Promise<BalancesMap>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const balances = await provider.getAllAccountBalances("0x36615Cf349d7F6344891B1e7CA7C72883F5dc049");
-console.log(`All balances: ${toJSON(balances)}`);
+console.log(`All balances: ${utils.toJSON(balances)}`);
 ```
 
 ### `getBalance`
@@ -351,7 +349,7 @@ async getBalance(address: Address, blockTag?: BlockTag, tokenAddress?: Address)
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const account = "0x36615Cf349d7F6344891B1e7CA7C72883F5dc049";
@@ -373,7 +371,7 @@ async getBaseTokenContractAddress(): Promise<Address>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Base token: ${await provider.getBaseTokenContractAddress()}`);
@@ -396,13 +394,11 @@ async getBlock(blockHashOrBlockTag: BlockTag, includeTxs?: boolean): Promise<Blo
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
-console.log(`Block: ${toJSON(await provider.getBlock("latest", true))}`);
+console.log(`Block: ${utils.toJSON(await provider.getBlock("latest", true))}`);
 ```
 
 ### `getBlockDetails`
@@ -423,13 +419,11 @@ async getBlockDetails(number:number): Promise<BlockDetails>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
-console.log(`Block details: ${toJSON(await provider.getBlockDetails(90_000))}`);
+console.log(`Block details: ${utils.toJSON(await provider.getBlockDetails(90_000))}`);
 ```
 
 ### `getBridgehubContractAddress`
@@ -445,7 +439,7 @@ async getBridgehubContractAddress(): Promise<Address>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Bridgehub: ${await provider.getBridgehubContractAddress()}`);
@@ -470,7 +464,7 @@ async getBytecodeByHash(bytecodeHash: BytesLike): Promise<Uint8Array>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 // Bytecode hash can be computed by following these steps:
 // const testnetPaymasterBytecode = await provider.getCode(await provider.getTestnetPaymasterAddress());
@@ -502,8 +496,6 @@ async getConfirmedTokens(start: number = 0, limit: number = 255): Promise<Token[
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
 import { Provider, types, utils } from "zksync-ethers";
 
@@ -528,14 +520,12 @@ async getContractAccountInfo(address:Address): Promise<ContractAccountInfo>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const tokenAddress = "0x927488F48ffbc32112F1fF721759649A89721F8F"; // Crown token which can be minted for free
-console.log(`Contract account info: ${toJSON(await provider.getContractAccountInfo(tokenAddress))}`);
+console.log(`Contract account info: ${utils.toJSON(await provider.getContractAccountInfo(tokenAddress))}`);
 ```
 
 ### `getDefaultBridgeAddresses`
@@ -555,13 +545,11 @@ getDefaultBridgeAddresses(): Promise<{
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
-console.log(`Default bridges: ${toJSON(await provider.getDefaultBridgeAddresses())}`);
+console.log(`Default bridges: ${utils.toJSON(await provider.getDefaultBridgeAddresses())}`);
 ```
 
 ### `connectL2Bridge`
@@ -582,7 +570,7 @@ async connectL2Bridge(address: Address): Promise<Il2SharedBridge | Il2Bridge>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const l2Bridge = await provider.connectL2Bridge("<L2_BRIDGE_ADDRESS>");
@@ -605,7 +593,7 @@ async isL2BridgeLegacy(address: Address): Promise<boolean>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const isBridgeLegacy = await provider.isL2BridgeLegacy("<L2_BRIDGE_ADDRESS>");
@@ -629,7 +617,7 @@ static getDefaultProvider(zksyncNetwork: ZkSyncNetwork = ZkSyncNetwork.Localhost
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const providerMainnet = Provider.getDefaultProvider(types.Network.Mainnet);
 const providerTestnet = Provider.getDefaultProvider(types.Network.Sepolia);
@@ -649,8 +637,6 @@ async getFeeParams(): Promise<FeeParams>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
 import { Provider, types, utils } from "zksync-ethers";
 
@@ -697,7 +683,7 @@ async getGasPrice(): Promise<bigint>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Gas price: ${await provider.getGasPrice()}`);
@@ -722,14 +708,12 @@ async getL1BatchBlockRange(l1BatchNumber: number): Promise<[number, number] | nu
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const l1BatchNumber = await provider.getL1BatchNumber();
-console.log(`L1 batch block range: ${toJSON(await provider.getL1BatchBlockRange(l1BatchNumber))}`);
+console.log(`L1 batch block range: ${utils.toJSON(await provider.getL1BatchBlockRange(l1BatchNumber))}`);
 ```
 
 ### `getL1BatchDetails`
@@ -750,14 +734,12 @@ async getL1BatchDetails(number: number): Promise<BatchDetails>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const l1BatchNumber = await provider.getL1BatchNumber();
-console.log(`L1 batch details: ${toJSON(await provider.getL1BatchDetails(l1BatchNumber))}`);
+console.log(`L1 batch details: ${utils.toJSON(await provider.getL1BatchDetails(l1BatchNumber))}`);
 ```
 
 ### `getL1BatchNumber`
@@ -773,7 +755,7 @@ async getL1BatchNumber(): Promise<number>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`L1 batch number: ${await provider.getL1BatchNumber()}`);
@@ -795,17 +777,15 @@ async getL2TransactionFromPriorityOp(l1TxResponse: ethers.TransactionResponse):
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const ethProvider = ethers.getDefaultProvider("sepolia");
 const l1Tx = "0xcca5411f3e514052f4a4ae1c2020badec6e0998adb52c09959c5f5ff15fba3a8";
 const l1TxResponse = await ethProvider.getTransaction(l1Tx);
 if (l1TxResponse) {
-  console.log(`Tx: ${toJSON(await provider.getL2TransactionFromPriorityOp(l1TxResponse))}`);
+  console.log(`Tx: ${utils.toJSON(await provider.getL2TransactionFromPriorityOp(l1TxResponse))}`);
 }
 ```
 
@@ -828,16 +808,14 @@ async getLogProof(txHash: BytesLike, index ? : number): Promise<MessageProof | n
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 // Any L2 -> L1 transaction can be used.
 // In this case, withdrawal transaction is used.
 const tx = "0x2a1c6c74b184965c0cb015aae9ea134fd96215d2e4f4979cfec12563295f610e";
-console.log(`Log ${toJSON(await provider.getLogProof(tx, 0))}`);
+console.log(`Log ${utils.toJSON(await provider.getLogProof(tx, 0))}`);
 ```
 
 ### `getLogs`
@@ -856,13 +834,11 @@ async getLogs(filter: Filter | FilterByBlockHash): Promise<Log[]>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
 import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
-console.log(`Logs: ${toJSON(await provider.getLogs({ fromBlock: 0, toBlock: 5, address: utils.L2_ETH_TOKEN_ADDRESS }))}`);
+console.log(`Logs: ${utils.toJSON(await provider.getLogs({ fromBlock: 0, toBlock: 5, address: utils.L2_ETH_TOKEN_ADDRESS }))}`);
 ```
 
 ### `getMainContractAddress`
@@ -878,7 +854,7 @@ async getMainContractAddress(): Promise<Address>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Main contract: ${await provider.getMainContractAddress()}`);
@@ -906,8 +882,6 @@ async getPriorityOpConfirmation(txHash: string, index: number = 0): Promise<{
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
 import { Provider, types, utils } from "zksync-ethers";
 
@@ -935,17 +909,15 @@ async getPriorityOpResponse(l1TxResponse: ethers.TransactionResponse): Promise<P
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const ethProvider = ethers.getDefaultProvider("sepolia");
 const l1Tx = "0xcca5411f3e514052f4a4ae1c2020badec6e0998adb52c09959c5f5ff15fba3a8";
 const l1TxResponse = await ethProvider.getTransaction(l1Tx);
 if (l1TxResponse) {
-  console.log(`Tx: ${toJSON(await provider.getPriorityOpResponse(l1TxResponse))}`);
+  console.log(`Tx: ${utils.toJSON(await provider.getPriorityOpResponse(l1TxResponse))}`);
 }
 ```
 
@@ -970,8 +942,6 @@ async getProof(address: Address, keys: string[], l1BatchNumber: number): Promise
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
 import { Provider, types, utils } from "zksync-ethers";
 
@@ -996,7 +966,7 @@ const storageKey = ethers.keccak256(concatenated);
 
 const l1BatchNumber = await provider.getL1BatchNumber();
 const storageProof = await provider.getProof(utils.NONCE_HOLDER_ADDRESS, [storageKey], l1BatchNumber);
-console.log(`Storage proof: ${toJSON(storageProof)}`);
+console.log(`Storage proof: ${utils.toJSON(storageProof)}`);
 ```
 
 ### `getProtocolVersion`
@@ -1018,7 +988,7 @@ async getProtocolVersion(id?: number): Promise<ProtocolVersion>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Protocol version: ${await provider.getProtocolVersion()}`);
@@ -1043,13 +1013,11 @@ async getRawBlockTransactions(number: number): Promise<RawBlockTransaction[]>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
-console.log(`Raw block transactions: ${toJSON(await provider.getRawBlockTransactions(90_000))}`);
+console.log(`Raw block transactions: ${utils.toJSON(await provider.getRawBlockTransactions(90_000))}`);
 ```
 
 ### `getTestnetPaymasterAddress`
@@ -1064,7 +1032,7 @@ async getTestnetPaymasterAddress(): Promise<Address | null>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Testnet paymaster: ${await provider.getTestnetPaymasterAddress()}`);
@@ -1088,7 +1056,7 @@ async getTransaction(txHash: string): Promise<TransactionResponse>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 
@@ -1120,15 +1088,13 @@ async getTransactionDetails(txHash: BytesLike): Promise<TransactionDetails>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 
 const TX_HASH = "<YOUR_TX_HASH_ADDRESS>";
-console.log(`Transaction details: ${toJSON(await provider.getTransactionDetails(TX_HASH))}`);
+console.log(`Transaction details: ${utils.toJSON(await provider.getTransactionDetails(TX_HASH))}`);
 ```
 
 ### `getTransactionReceipt`
@@ -1149,14 +1115,12 @@ async getTransactionReceipt(txHash: string): Promise<TransactionReceipt>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 const TX_HASH = "<YOUR_TX_HASH_ADDRESS>";
-console.log(`Transaction receipt: ${toJSON(await provider.getTransactionReceipt(TX_HASH))}`);
+console.log(`Transaction receipt: ${utils.toJSON(await provider.getTransactionReceipt(TX_HASH))}`);
 ```
 
 ### `getTransactionStatus`
@@ -1175,15 +1139,13 @@ async getTransactionStatus(txHash: string): Promise<TransactionStatus>
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 
 const TX_HASH = "<YOUR_TX_HASH_ADDRESS>";
-console.log(`Transaction status: ${toJSON(await provider.getTransactionStatus(TX_HASH))}`);
+console.log(`Transaction status: ${utils.toJSON(await provider.getTransactionStatus(TX_HASH))}`);
 ```
 
 ### `getTransferTx`
@@ -1341,7 +1303,7 @@ async isBaseToken(token: Address): Promise<string>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Is base token: ${await provider.isBaseToken("0x5C221E77624690fff6dd741493D735a17716c26B")}`);
@@ -1358,7 +1320,7 @@ async isEthBasedChain(): Promise<boolean>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`Is ETH based chain: ${await provider.isEthBasedChain()}`);
@@ -1377,7 +1339,7 @@ async l1ChainId(): Promise<number>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`L1 chain ID: ${await provider.l1ChainId()}`);
@@ -1404,7 +1366,7 @@ async l1TokenAddress(token: Address): Promise<string>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`L1 token address: ${await provider.l1TokenAddress("0x3e7676937A7E96CFB7616f255b9AD9FF47363D4b")}`);
@@ -1432,7 +1394,7 @@ async l2TokenAddress(token: Address): Promise<string>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`L2 token address: ${await provider.l2TokenAddress("0x5C221E77624690fff6dd741493D735a17716c26B")}`);
@@ -1449,7 +1411,7 @@ async newBlockFilter(): Promise<bigint>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`New block filter: ${await provider.newBlockFilter()}`);
@@ -1499,7 +1461,7 @@ async newPendingTransactionsFilter(): Promise<bigint>
 #### Example
 
 ```ts
-import { Provider, types } from "zksync-ethers";
+import { Provider, types, utils } from "zksync-ethers";
 
 const provider = Provider.getDefaultProvider(types.Network.Sepolia);
 console.log(`New pending transaction filter: ${await provider.newPendingTransactionsFilter()}`);
@@ -1532,8 +1494,6 @@ async sendRawTransactionWithDetailedOutput(signedTx: string): Promise<Transactio
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
 import { Provider, Wallet, types, utils } from "zksync-ethers";
 import { ethers } from "ethers";
diff --git a/content/sdk/10.js/00.ethers/05.api/20.v6/00.providers/02.browser-provider.md b/content/sdk/10.js/00.ethers/05.api/20.v6/00.providers/02.browser-provider.md
index 22cf0302..d0fa5dc1 100644
--- a/content/sdk/10.js/00.ethers/05.api/20.v6/00.providers/02.browser-provider.md
+++ b/content/sdk/10.js/00.ethers/05.api/20.v6/00.providers/02.browser-provider.md
@@ -791,18 +791,3 @@ const signer = await provider.getSigner();
 // Verify that signer matches the expected wallet address.
 console.log(`Signer address: ${await signer.getAddress()}`);
 ```
-
-## Appendix
-
-### toJSON
-
-```ts
-function toJSON(object: any): string {
-  return JSON.stringify(object, (key, value) => {
-    if (typeof value === "bigint") {
-      return value.toString(); // Convert BigInt to string
-    }
-    return value;
-  });
-}
-```
diff --git a/content/sdk/10.js/00.ethers/05.api/20.v6/01.accounts/01.wallet.md b/content/sdk/10.js/00.ethers/05.api/20.v6/01.accounts/01.wallet.md
index f7883bca..65145015 100644
--- a/content/sdk/10.js/00.ethers/05.api/20.v6/01.accounts/01.wallet.md
+++ b/content/sdk/10.js/00.ethers/05.api/20.v6/01.accounts/01.wallet.md
@@ -1830,8 +1830,6 @@ async getPriorityOpConfirmation(txHash: string, index: number = 0): Promise<{
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
 import { Wallet, Provider, types, utils } from "zksync-ethers";
 import { ethers } from "ethers";
diff --git a/content/sdk/10.js/00.ethers/05.api/20.v6/01.accounts/03.l1signer.md b/content/sdk/10.js/00.ethers/05.api/20.v6/01.accounts/03.l1signer.md
index 28352263..ed5173d0 100644
--- a/content/sdk/10.js/00.ethers/05.api/20.v6/01.accounts/03.l1signer.md
+++ b/content/sdk/10.js/00.ethers/05.api/20.v6/01.accounts/03.l1signer.md
@@ -10,7 +10,7 @@ This class extends `ethers.JsonRpcSigner` and so supports all the methods availa
 The easiest way to construct it is from an `BrowserProvider` object.
 
 ```ts
-import { Provider, L1Signer, types } from "zksync-ethers";
+import { Provider, L1Signer, types, utils } from "zksync-ethers";
 import { ethers } from "ethers";
 
 const provider = new ethers.BrowserProvider(window.ethereum);
@@ -1084,8 +1084,6 @@ async getPriorityOpConfirmation(txHash: string, index: number = 0): Promise<{
 
 #### Example
 
-Helper function: [toJSON](/sdk/js/ethers/api/v6/providers/browser-provider#tojson).
-
 ```ts
 import { Provider, L1Signer, types } from "zksync-ethers";
 import { ethers } from "ethers";