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# Breaking Changes
This is a history of NIP changes that potentially break pre-existing implementations, in
reverse chronological order.
| Date | Commit | NIP | Change |
| ----------- | --------- | -------- | ------ |
| 2024-02-16 | [cbec02ab ](https://github.com/nostr-protocol/nips/commit/cbec02ab ) | [NIP-49 ](49.md ) | Password first normalized to NFKC |
| 2024-02-15 | [afbb8dd0 ](https://github.com/nostr-protocol/nips/commit/afbb8dd0 ) | [NIP-39 ](39.md ) | PGP identity was removed |
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| 2024-02-07 | [d3dad114 ](https://github.com/nostr-protocol/nips/commit/d3dad114 ) | [NIP-46 ](46.md ) | Connection token format was changed |
| 2024-01-30 | [1a2b21b6 ](https://github.com/nostr-protocol/nips/commit/1a2b21b6 ) | [NIP-59 ](59.md ) | 'p' tag became optional |
| 2023-01-27 | [c2f34817 ](https://github.com/nostr-protocol/nips/commit/c2f34817 ) | [NIP-47 ](47.md ) | optional expiration tag should be honored |
| 2024-01-10 | [3d8652ea ](https://github.com/nostr-protocol/nips/commit/3d8652ea ) | [NIP-02 ](02.md ) | list entries should be chronological |
| 2024-01-10 | [3d8652ea ](https://github.com/nostr-protocol/nips/commit/3d8652ea ) | [NIP-51 ](51.md ) | list entries should be chronological |
| 2023-12-30 | [29869821 ](https://github.com/nostr-protocol/nips/commit/29869821 ) | [NIP-52 ](52.md ) | 'name' tag was removed (use 'title' tag instead) |
| 2023-12-27 | [17c67ef5 ](https://github.com/nostr-protocol/nips/commit/17c67ef5 ) | [NIP-94 ](94.md ) | 'aes-256-gcm' tag was removed |
| 2023-12-03 | [0ba45895 ](https://github.com/nostr-protocol/nips/commit/0ba45895 ) | [NIP-01 ](01.md ) | WebSocket status code `4000` was replaced by 'CLOSED' message |
| 2023-11-28 | [6de35f9e ](https://github.com/nostr-protocol/nips/commit/6de35f9e ) | [NIP-89 ](89.md ) | 'client' tag value was changed |
| 2023-11-20 | [7822a8b1 ](https://github.com/nostr-protocol/nips/commit/7822a8b1 ) | [NIP-51 ](51.md ) | `kind: 30000` `kind: 30001` were deprecated |
| 2023-11-11 | [cbdca1e9 ](https://github.com/nostr-protocol/nips/commit/cbdca1e9 ) | [NIP-84 ](84.md ) | 'range' tag was removed |
| 2023-11-07 | [108b7f16 ](https://github.com/nostr-protocol/nips/commit/108b7f16 ) | [NIP-01 ](01.md ) | 'OK' message must have 4 items |
| 2023-10-17 | [cf672b76 ](https://github.com/nostr-protocol/nips/commit/cf672b76 ) | [NIP-03 ](03.md ) | 'block' tag was removed |
| 2023-09-29 | [7dc6385f ](https://github.com/nostr-protocol/nips/commit/7dc6385f ) | [NIP-57 ](57.md ) | optional 'a' tag was included in `zap receipt` |
| 2023-08-21 | [89915e02 ](https://github.com/nostr-protocol/nips/commit/89915e02 ) | [NIP-11 ](11.md ) | 'min_prefix' was removed |
| 2023-08-20 | [37c4375e ](https://github.com/nostr-protocol/nips/commit/37c4375e ) | [NIP-01 ](01.md ) | replaceable events with same timestamp should be retained event with lowest id |
| 2023-08-15 | [88ee873c ](https://github.com/nostr-protocol/nips/commit/88ee873c ) | [NIP-15 ](15.md ) | 'countries' tag was renamed to 'regions' |
| 2023-08-14 | [72bb8a12 ](https://github.com/nostr-protocol/nips/commit/72bb8a12 ) | [NIP-12 ](12.md ) | NIP-12, 16, 20 and 33 were merged into NIP-01 |
| 2023-08-14 | [72bb8a12 ](https://github.com/nostr-protocol/nips/commit/72bb8a12 ) | [NIP-16 ](16.md ) | NIP-12, 16, 20 and 33 were merged into NIP-01 |
| 2023-08-14 | [72bb8a12 ](https://github.com/nostr-protocol/nips/commit/72bb8a12 ) | [NIP-20 ](20.md ) | NIP-12, 16, 20 and 33 were merged into NIP-01 |
| 2023-08-14 | [72bb8a12 ](https://github.com/nostr-protocol/nips/commit/72bb8a12 ) | [NIP-33 ](33.md ) | NIP-12, 16, 20 and 33 were merged into NIP-01 |
| 2023-08-11 | [d87f8617 ](https://github.com/nostr-protocol/nips/commit/d87f8617 ) | [NIP-25 ](25.md ) | empty `content` should be considered as "+" |
| 2023-08-01 | [5d63b157 ](https://github.com/nostr-protocol/nips/commit/5d63b157 ) | [NIP-57 ](57.md ) | 'zap' tag was changed |
| 2023-07-15 | [d1814405 ](https://github.com/nostr-protocol/nips/commit/d1814405 ) | [NIP-01 ](01.md ) | `since` and `until` filters should `since <= created_at <= until` |
| 2023-07-12 | [a1cd2bd8 ](https://github.com/nostr-protocol/nips/commit/a1cd2bd8 ) | [NIP-25 ](25.md ) | custom emoji was supported |
| 2023-06-18 | [83cbd3e1 ](https://github.com/nostr-protocol/nips/commit/83cbd3e1 ) | [NIP-11 ](11.md ) | 'image' was renamed to 'icon' |
| 2023-04-13 | [bf0a0da6 ](https://github.com/nostr-protocol/nips/commit/bf0a0da6 ) | [NIP-15 ](15.md ) | different
| 2023-04-09 | [fb5b7c73 ](https://github.com/nostr-protocol/nips/commit/fb5b7c73 ) | [NIP-15 ](15.md ) | NIP-15 was merged into NIP-01 |
| 2023-03-15 | [e1004d3d ](https://github.com/nostr-protocol/nips/commit/e1004d3d ) | [NIP-19 ](19.md ) | `1: relay` was changed to optionally |
2024-02-15 20:15:32 -05:00
2024-02-20 15:26:44 -05:00
Breaking changes prior to 2023-03-01 are not yet documented.
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## NOTES
- If it isn't clear that a change is breaking or not, we list it.
- The date is the date it was merged, not necessarily the date of the commit.
