# \[Proposal\] Iron Fish Hard Fork 1

**URL:** <https://discourse.ironfish.network/t/proposal-iron-fish-hard-fork-1/74>\
**Category:** General\
**Created:** [September 19, 2023, 6:32pm UTC](https://discourse.ironfish.network/t/proposal-iron-fish-hard-fork-1/74 "2023-09-19T18:32:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![yajun](https://avatars.discourse-cdn.com/v4/letter/y/eada6e/32.png) [@yajun](https://discourse.ironfish.network/u/yajun)\
**Post date:** [September 19, 2023, 6:32pm UTC](https://discourse.ironfish.network/t/proposal-iron-fish-hard-fork-1/74/1 "2023-09-19T18:32:20Z")

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This proposal is for the first hard fork on Iron Fish network since mainnet launch.  
Hardfork 1 Activation:

- 
  - `Block >= 246_468` on the Iron Fish [Testnet](https://testnet.explorer.ironfish.network/), estimated October 18 2023

- 
  - `Block >= 302_464` on the Iron Fish [Mainnet](https://explorer.ironfish.network/), estimated November 15 2023

Hardfork 1 will include following FIPs:

- [FIP-1](https://fips.ironfish.network/fips/fip-allow-asset-owners-to-change-owner-key) Allow asset owners to change owner key
- [FIP-2](https://fips.ironfish.network/fips/fip-2) Enforce Sequential Block Time