> ## Documentation Index
> Fetch the complete documentation index at: https://www.helius.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Use the Orb Solana Devnet Explorer

> Learn how to use Orb, a new block explorer for Solana Devnet to analyze blocks, inspect on-chain programs, and debug transactions.

Solana’s Devnet environment is a critical part of the Solana development workflow.

This article covers the basics of using Orb, our new [Solana Devnet block explorer](https://orbmarkets.io), including finding programs, inspecting transactions, and debugging errors. 

## Solana Devnet Explorer

The Orb explorer supports all three Solana clusters:

1. [Mainnet-beta](https://orbmarkets.io/?cluster=mainnet-beta)
2. [Devnet](https://orbmarkets.io/?cluster=devnet)
3. [Testnet](https://orbmarkets.io/?cluster=testnet)

To access these clusters, select your cluster in the top-right corner of the UI.

<Frame caption="Changing the Solana cluster to Devnet on Orb">
  <img src="https://mintcdn.com/helius/jzycqvLpitZUgQKU/images/the-orb-solana-devnet-explorer.jpg?fit=max&auto=format&n=jzycqvLpitZUgQKU&q=85&s=5d05b5051a354867760508ac3157418b" alt="The Orb Solana Devnet Explorer Jp" width="1120" height="630" data-path="images/the-orb-solana-devnet-explorer.jpg" />
</Frame>

Alternatively, you can append the cluster's parameter to the end of your URL:

* `?cluster=mainnet-beta`
* `?cluster=devnet`
* `?cluster=testnet`

## How to Look Up a Token Mint Address on Solana Devnet

When testing programs on Solana Devnet, you’ll need to [get Devnet SOL](https://www.helius.dev/docs/rpc/devnet-sol) from a Solana Devnet faucet, or by calling the airdrop method from the Solana CLI. You'll also need a [Solana Devnet RPC endpoint](https://www.helius.dev/docs/api-reference/endpoints), which you can get for free in your Helius Dashboard.

Besides Devnet SOL, you may need other tokens, such as [Devnet USDC](https://orbmarkets.io/address/4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU/history?cluster=devnet). To find a Solana token mint address on Devnet, enter the token’s name in the search bar.

<Frame caption="Searching for a Solana Devnet token on Orb">
  <img src="https://mintcdn.com/helius/2e0Gv0IOvGbdkNUP/images/find-solana-devnet-tokens-on-the-orb-explorer.jpg?fit=max&auto=format&n=2e0Gv0IOvGbdkNUP&q=85&s=d7f03a5a7bc19a4647575249d1113004" alt="Find Solana Devnet Tokens On The Orb Explorer Jp" width="3200" height="1800" data-path="images/find-solana-devnet-tokens-on-the-orb-explorer.jpg" />
</Frame>

In case there are duplicates, verify the token address is correct on the issuer’s documentation, for example, Circle’s [USDC token mint address list](https://developers.circle.com/stablecoins/usdc-contract-addresses#testnet) has all their supported networks and clusters.

The Solana Devnet USDC mint address is: `4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU`

If you’re testing custom token functionality, you will likely need to mint your own tokens using the [Solana Token Program (Devnet)](https://orbmarkets.io/address/TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA/history?cluster=devnet) or [Token 2022 Program (Devnet)](https://orbmarkets.io/address/TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb/history?cluster=devnet).

## How to Debug Failed Transactions on Solana Devnet

A common use case for Devnet Explorers on Solana is troubleshooting transactions for deployed programs on Devnet before deploying them to Mainnet-beta.

For this example, let’s look at a random [failed transaction](https://orbmarkets.io/tx/CHJMcFR5z2VzAe2P3Enu5TpuvtJjRYqNDp6SDxEU3xruF6hXZbcFn7YaxcCDNbKkvhFD4XzSuE4PHLC4ho4E78c?cluster=devnet\&tab=instructions) that involved wrapped SOL.

### Explain with AI

Clicking the “Explain with AI” button, we see a swap using the [Raydium CP Swap Program](https://orbmarkets.io/address/DRaycpLY18LhpbydsBWbVJtxpNv9oXPgjRSfpF2bWpYb/anchor-idl?cluster=devnet) program (`DRay…Wpyb`) failed due to an “insufficient funds” error (`0x1`) that happened during the token transfer.

<Frame caption="Using Orb’s AI Explainer to understand a failed transaction on Solana Devnet">
  <img src="https://mintcdn.com/helius/2e0Gv0IOvGbdkNUP/images/ai-explanation-of-a-failed-solana-devnet-transaction-on-the-orb-explorer.jpg?fit=max&auto=format&n=2e0Gv0IOvGbdkNUP&q=85&s=e49c65ca39cf4e7f5b6e00eb09f3297d" alt="Ai Explanation Of A Failed Solana Devnet Transaction On The Orb Explorer Jp" width="2304" height="1296" data-path="images/ai-explanation-of-a-failed-solana-devnet-transaction-on-the-orb-explorer.jpg" />
</Frame>

### Check Logs

To debug the transaction more, click the **Logs** tab. This view shows a list of programs invoked during the transaction, the instructions they called, the number of compute units they consumed, and their status (i.e., success or failure). 

<Frame caption="Finding failed transaction logs on Orb’s Solana Devnet explorer">
  <img src="https://mintcdn.com/helius/2e0Gv0IOvGbdkNUP/images/debug-on-chain-program-errors-on-the-orb-solana-devnet-explorer.jpg?fit=max&auto=format&n=2e0Gv0IOvGbdkNUP&q=85&s=9581dd520a964aeed31a09f829a97baf" alt="Debug On Chain Program Errors On The Orb Solana Devnet Explorer Jp" width="3200" height="1800" data-path="images/debug-on-chain-program-errors-on-the-orb-solana-devnet-explorer.jpg" />
</Frame>

In this specific example, we see during the Token Program's `TransferChecked` instruction, the program logged an "insufficient funds" error and returned the `0x1` error.

### Inspect the Raw Output

To debug this further, let’s look at the raw output to identify what wallet was at fault, the token they were trying to transfer, and the pre-transaction balances.

<Frame caption="Reading the raw JSON outputs of a Solana Devnet transaction on Orb">
  <img src="https://mintcdn.com/helius/jzycqvLpitZUgQKU/images/solana-devnet-token-transfer-raw-instruction-logs-on-the-orb-explorer.jpg?fit=max&auto=format&n=jzycqvLpitZUgQKU&q=85&s=54b415fb98a35a2165f7f3cf235a2be5" alt="Solana Devnet Token Transfer Raw Instruction Logs On The Orb Explorer Jp" width="1824" height="1026" data-path="images/solana-devnet-token-transfer-raw-instruction-logs-on-the-orb-explorer.jpg" />
</Frame>

Here, we can see `innerInstruction` (index 2, or the 3rd instruction) is of the type `TransferChecked` and it is attempting to send 26,874,347.041642 units of the `DaHE...8R8i` token (Wildlife Conservation Coin) from the `GVBbU...5TUP` token account of the `Bzi4...tuvF` wallet to the `2yXu...qsTP` destination token account.

Scrolling down, we can see the instruction logs confirmed that inner instruction at index 2 logged an insufficient funds error on the Token Program’s `TransferChecked` instruction.

<Frame caption="Finding an “insufficient funds” error logged for Solana’s Token Program on the Orb Devnet explorer">
  <img src="https://mintcdn.com/helius/jzycqvLpitZUgQKU/images/raw-json-parsed-instruction-logs-on-the-orb-solana-devnet-explorer.jpg?fit=max&auto=format&n=jzycqvLpitZUgQKU&q=85&s=16e074e619a4342d8fb75303cd31c297" alt="Raw Json Parsed Instruction Logs On The Orb Solana Devnet Explorer Jp" width="1696" height="954" data-path="images/raw-json-parsed-instruction-logs-on-the-orb-solana-devnet-explorer.jpg" />
</Frame>

Because we know the `DRay…WpYb` is the [<u>Raydium CP Swap Program</u>](https://orbmarkets.io/address/DRaycpLY18LhpbydsBWbVJtxpNv9oXPgjRSfpF2bWpYb/anchor-idl?cluster=devnet) program, we can assume that the liquidity pool holding the `DaHE...8R8i` token didn’t have enough to complete the requested swap size.

## How to Find Solana Devnet Program Addresses

Another common use case for Solana Devnet explorers is finding the Program IDs for programs deployed on Devnet for testing purposes.

Just like [exploring programs on Solana Mainnet-beta](https://www.helius.dev/docs/orb/explore-programs), simply change your cluster to Devnet, lookup the program by name, and click the results.

If the program you're looking for has not been tagged, please contact our team.

### **Core Solana Devnet Program IDs**

Here are a few of the most important core Solana programs deployed on Devnet:

| Program Name                                                                                                                          | Solana Program ID                              |
| ------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------- |
| [System Program](https://orbmarkets.io/address/11111111111111111111111111111111/history?cluster=devnet)                               | `1111111111111111111111111111111`              |
| [Token Program](https://orbmarkets.io/address/TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA/history?cluster=devnet)                     | `TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA`  |
| [Token 2022 Program](https://orbmarkets.io/address/TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb/history?cluster=devnet)                | `TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb`  |
| [Vote Program](https://orbmarkets.io/address/Vote111111111111111111111111111111111111111/history?cluster=devnet)                      | `Vote111111111111111111111111111111111111111`  |
| [Compute Budget Program](https://orbmarkets.io/address/ComputeBudget111111111111111111111111111111/history?cluster=devnet)            | `ComputeBudget111111111111111111111111111111`  |
| [Associated Token Account Program](https://orbmarkets.io/address/ATokenGPvbdGVxr1b2hvZbsiqW5xWH25efTNsLJA8knL/history?cluster=devnet) | `ATokenGPvbdGVxr1b2hvZbsiqW5xWH25efTNsLJA8knL` |
| [Address Lookup Table Program](https://orbmarkets.io/address/AddressLookupTab1e1111111111111111111111111/history?cluster=devnet)      | `AddressLookupTab1e1111111111111111111111111`  |
| [Memo Program](https://orbmarkets.io/address/MemoSq4gqABAXKb96qnH8TysNcWxMyWCqXgDLGmfcHr/history?cluster=devnet)                      | `MemoSq4gqABAXKb96qnH8TysNcWxMyWCqXgDLGmfcHr`  |
| [Memo Program V1](https://orbmarkets.io/address/Memo1UhkJRfHyvLMcVucJwxXeuD728EqVDDwQDxFMNo/history?cluster=devnet)                   | `Memo1UhkJRfHyvLMcVucJwxXeuD728EqVDDwQDxFMNo`  |
| [Config Program](https://orbmarkets.io/address/Config1111111111111111111111111111111111111/history?cluster=devnet)                    | `Config111111111111111111111111111111111111`   |
| [Ed25519 SigVerify Precompile](https://orbmarkets.io/address/Ed25519SigVerify111111111111111111111111111/history?cluster=devnet)      | `Ed25519SigVerify111111111111111111111111111`  |
| [Secp256k1 SigVerify Precompile](https://orbmarkets.io/address/KeccakSecp256k11111111111111111111111111111/history?cluster=devnet)    | `KeccakSecp256k11111111111111111111111111111`  |
| [Stake Program](https://orbmarkets.io/address/Stake11111111111111111111111111111111111111/history?cluster=devnet)                     | `Stake11111111111111111111111111111111111111`  |
| [Stake Pool Program](https://orbmarkets.io/address/SPoo1Ku8WFXoNDMHPsrGSTSG1Y47rzgn41SLUNakuHy/history?cluster=devnet)                | `SPoo1Ku8WFXoNDMHPsrGSTSG1Y47rzgn41SLUNakuHy`  |

### **Solana Devnet App Program IDs**

For testing integrations, developers will also want to test with popular on-chain programs such as Metaplex, Jupiter, Pyth, Wormhole, Pump.fun, and many others.

Here are some of the most popular Solana Devnet program IDs:

| **Program Name**                                                                                                                     | **Solana Program ID**                          |
| :----------------------------------------------------------------------------------------------------------------------------------- | :--------------------------------------------- |
| [CCTP Message Minter](https://orbmarkets.io/address/CCTPiPYPc6AsJuwueEnWgSgucamXDZwBd53dQ11YiKX3/history?cluster=devnet)             | `CCTPiPYPc6AsJuwueEnWgSgucamXDZwBd53dQ11YiKX3` |
| [Circle CCTP Message Transmitter](https://orbmarkets.io/address/CCTPmbSD7gX1bxKPAmg77w8oFzNFpaQiQUWD43TKaecd/history?cluster=devnet) | `CCTPmbSD7gX1bxKPAmg77w8oFzNFpaQiQUWD43TKaecd` |
| [Chainlink OCR2 Oracle Program](https://orbmarkets.io/address/cjg3oHmg9uuPsP8D6g29NWvhySJkdYdAo9D25PRbKXJ/history?cluster=devnet)    | `cjg3oHmg9uuPsP8D6g29NWvhySJkdYdAo9D25PRbKXJ`  |
| [Metaplex Program](https://orbmarkets.io/address/p1exdMJcjVao65QdewkaZRUnU6VPSXhus9n2GzWfh98/history?cluster=devnet)                 | `p1exdMJcjVao65QdewkaZRUnU6VPSXhus9n2GzWfh98`  |
| [Metaplex Token Metadata Program](https://orbmarkets.io/address/metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s/history?cluster=devnet)  | `metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s`  |
| [Name Service Program](https://orbmarkets.io/address/namesLPneVptA9Z5rqUDD9tMTWEJwofgaYwp8cawRkX/history?cluster=devnet)             | `namesLPneVptA9Z5rqUDD9tMTWEJwofgaYwp8cawRkX`  |
| [NFT Candy Machine Program V2](https://orbmarkets.io/address/cndy3Z4yapfJBmL3ShUp5exZKqR3z33thTzeNMm2gRZ/history?cluster=devnet)     | `cndy3Z4yapfJBmL3ShUp5exZKqR3z33thTzeNMm2gRZ`  |
| [Pump.fun AMM](https://orbmarkets.io/address/pAMMBay6oceH9fJKBRHGP5D4bD4sWpmSwMn52FMfXEA/history?cluster=devnet)                     | `pAMMBay6oceH9fJKBRHGP5D4bD4sWpmSwMn52FMfXEA`  |
| [Pyth Oracle Program](https://orbmarkets.io/address/gSbePebfvPy7tRqimPoVecS2UsBvYv46ynrzWocc92s/history?cluster=devnet)              | `gSbePebfvPy7tRqimPoVecS2UsBvYv46ynrzWocc92s`  |
| [State Compression Program](https://orbmarkets.io/address/cmtDvXumGCrqC1Age74AVPhSRVXJMd8PJS91L8KbNCK/history?cluster=devnet)        | `cmtDvXumGCrqC1Age74AVPhSRVXJMd8PJS91L8KbNCK`  |
| [Wormhole Core Bridge](https://orbmarkets.io/address/HDwcJBJXjL9FpJ7UBsYBtaDjsBUhuLCUYoz3zr8SWWaQ/history?cluster=devnet)            | `HDwcJBJXjL9FpJ7UBsYBtaDjsBUhuLCUYoz3zr8SWWaQ` |
| [Wormhole Token Bridge](https://orbmarkets.io/address/DZnkkTmCiFWfYTfT41X3Rd1kDgozqzxWaHqsw6W4x2oe/history?cluster=devnet)           | `DZnkkTmCiFWfYTfT41X3Rd1kDgozqzxWaHqsw6W4x2oe` |

Just like researching Solana programs on Mainnet-beta, Orb's Devnet program viewer provides transaction histories, IDLs, verification details, security information, and authorities.

<Frame caption="The IDL for Wormhole’s Core Bridge program deployed on Solana Devnet in the Orb explorer">
  <img src="https://mintcdn.com/helius/jzycqvLpitZUgQKU/images/solana-devnet-program-idl-explorer-on-orb-for-the-wormhole-core-bridge-contract.jpg?fit=max&auto=format&n=jzycqvLpitZUgQKU&q=85&s=b146ff409942f670b32af6367cb7228d" alt="Solana Devnet Program Idl Explorer On Orb For The Wormhole Core Bridge Contract Jp" width="2976" height="1674" data-path="images/solana-devnet-program-idl-explorer-on-orb-for-the-wormhole-core-bridge-contract.jpg" />
</Frame>

## Conclusion

Deploying programs and debugging errors on Solana Devnet is a critical step in the Solana development lifecycle. Orb is a fast, human-readable [Solana Devnet blockchain explorer](https://orbmarkets.io) that makes it easy for developers to understand what is happening on-chain, find issues, and fix them.

For more information about Orb, read our [announcement](https://www.helius.dev/blog/orb-block-explorer) and [user guides](https://www.helius.dev/docs/orb).

For Solana Devnet alternatives, explore new developer tools like [Surfpool](https://www.helius.dev/blog/surfpool).