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Update ENSIP-15: Unicode 17 #45

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14a6147
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adraffy Aug 6, 2025
149fa01
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adraffy Sep 18, 2025
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15 changes: 12 additions & 3 deletions ensips/15.md
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Original file line number Diff line number Diff line change
@@ -1,11 +1,11 @@
---
description: A standard for ENS name normalization.
description: ENS name normalization.
contributors:
- raffy.eth
ensip:
status: final
created: 2023-04-03
ignoredRules: ["heading:description-of-", "heading:derivation", "heading:appendix:-reference-specifications", "heading:appendix:-additional-resources", "heading:appendix:-validation-tests", "heading:annex:-beautification"]
ignoredRules: ["heading:description-of-", "heading:derivation", "heading:appendix:-reference-specifications", "heading:appendix:-additional-resources", "heading:appendix:-validation-tests", "heading:annex:-beautification", "heading:appendix:-updates"]
---

# ENSIP-15: ENS Name Normalization Standard
Expand All @@ -30,7 +30,7 @@ This ENSIP standardizes Ethereum Name Service (ENS) name normalization process o

## Specification

* Unicode version `16.0.0`
* Unicode version [`17.0.0`](#appendix-updates)
* Normalization is a living specification and should use the latest stable version of Unicode.
* [`spec.json`](https://github.com/adraffy/ens-normalize.js/blob/main/derive/output/spec.json) contains all [necessary data](#description-of-specjson) for normalization.
* [`nf.json`](https://github.com/adraffy/ens-normalize.js/blob/main/derive/output/nf.json) contains all [necessary data](#description-of-nfjson) for [Unicode Normalization Forms](https://unicode.org/reports/tr15/) NFC and NFD.
Expand Down Expand Up @@ -493,3 +493,12 @@ Follow [algorithm](#algorithm), except:
* Replace `3BE (ξ) GREEK SMALL LETTER XI` with `39E (Ξ) GREEK CAPITAL LETTER XI` if the label isn't *Greek*.
* Example: `normalize("‐Ξ1️⃣") [2010 39E 31 FE0F 20E3]` is `"-ξ1⃣" [2D 3BE 31 20E3]`
* Example: `beautify("-ξ1⃣") [2D 3BE 31 20E3]"` is `"-Ξ1️⃣" [2D 39E 31 FE0F 20E3]`

## Appendix: Updates

| Unicode | [Release](https://www.unicode.org/history/publicationdates.html#Release_Dates) | Updated | [SHA-256 of `spec.json`](https://github.com/adraffy/ens-normalize.js/blob/main/derive/data/releases.json)
| :-: | :-- | :-- | :--
| `15.0.0` | 2022-09-13 | 2023-02-21 | `962316964553fce6188e25a5166a4c1e906333adf53bdf2964c71dedc0f8e2c8`
| `15.1.0` | 2023-09-12 | 2024-01-25 | `1f6d3bdb7a724fe3b91f6d73ab14defcb719e0f4ab79022089c940e7e9c56b9c`
| `16.0.0` | 2024-09-10 | 2024-09-14 | `4b3c5210a328d7097500b413bf075ec210bbac045cd804deae5d1ed771304825`
| `17.0.0` | 2025-09-09 | 2025-09-18 | `4febc8f5d285cbf80d2320fb0c1777ac25e378eb72910c34ec963d0a4e319c84`