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whats-new-entropyv2.mdx

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  1. ---
    2. 

  2. title: What's New in Entropy v2
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  3. description: New features and improvements in Entropy v2
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  4. icon: Sparkle
    5. 

  5. ---
    6. 

  6. 

  7. ## Key Improvements
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  8. 

  9. Pyth Entropy v2 brings new features and improvements that make random number generation more flexible, efficient, and easier to integrate.
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  10. 

  11. ### 1. Multiple Request Variants
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  12. 

  13. Entropy v2 provides multiple ways to request random numbers:
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  14. 

  15. - **Basic Request**: Simplest implementation with default settings
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  16. - **Custom Gas Limit**: Specify gas limits for complex callbacks
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  17. - **Custom Provider**: Choose specific entropy providers
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  18. - **Full Control**: Specify all parameters (provider, gas limit, user random number)
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  19. 

  20. Each of these request types is described in more detail with examples in [Request Callback Variants](./entropy/request-callback-variants).
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  21. 

  22. ### 2. Enhanced Callback Status
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  23. 

  24. Entropy V2 introduces callback statuses, which allow users to track the status of their callbacks.
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  25. [Pyth Dev-Forum Announcement](https://dev-forum.pyth.network/t/announcing-entropy-v2/324#p-649-enhanced-callback-statuses-2) provides more details on enhanced callback statuses.
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  26. 

  27. ### 3. Entropy Explorer
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  28. 

  29. Entropy V2 includes a public Entropy Explorer, that lets teams easily track the status of their callbacks and re-request them if they fail on-chain.
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  30. See [Entropy Explorer](https://entropy-explorer.pyth.network/) to search and debug your callbacks.
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  31. 

  32. ## Migration Guide
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  33. 

  34. If you're upgrading from Entropy v1 to v2:
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  35. 

  36. 1. Update your imports to use [`IEntropyV2`](https://github.com/pyth-network/pyth-crosschain/blob/main/target_chains/ethereum/entropy_sdk/solidity/IEntropyV2.sol).
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  37. 2. Replace `request()` calls with [`requestV2()`](https://github.com/pyth-network/pyth-crosschain/blob/f5402df8e44158c519496bcd2fac5d3afe856a0e/target_chains/ethereum/entropy_sdk/solidity/IEntropyV2.sol#L26)
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  38. 3. Update fee calculation to use [`getFeeV2()`](https://github.com/pyth-network/pyth-crosschain/blob/f5402df8e44158c519496bcd2fac5d3afe856a0e/target_chains/ethereum/entropy_sdk/solidity/IEntropyV2.sol#L135)
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  39. 4. Test thoroughly with the new interface
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  40. 

  41. ## Backward Compatibility
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  42. 

  43. Entropy v2 maintains backward compatibility with v1 for existing applications. However, we recommend migrating to v2 for new applications to take advantage of the improved features.
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