From e7c41ece774d9d73e2f83af797ccf73cbbf4a266 Mon Sep 17 00:00:00 2001
From: Rowan Cockett <rowanc1@gmail.com>
Date: Thu, 17 Oct 2024 11:02:44 -0600
Subject: [PATCH] =?UTF-8?q?=F0=9F=94=BD=20Lowercase=20DOI?=
MIME-Version: 1.0
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---
 .changeset/mighty-houses-whisper.md | 5 +++++
 src/utils.ts                        | 4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/mighty-houses-whisper.md

diff --git a/.changeset/mighty-houses-whisper.md b/.changeset/mighty-houses-whisper.md
new file mode 100644
index 0000000..2fe93ca
--- /dev/null
+++ b/.changeset/mighty-houses-whisper.md
@@ -0,0 +1,5 @@
+---
+"crossref-utils": patch
+---
+
+Lowercase DOI
diff --git a/src/utils.ts b/src/utils.ts
index e2b60d4..eac7c66 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -24,8 +24,8 @@ export function e(name: string, attributes = {}, children?: string | any[]): Ele
 
 // For letters and numbers that conflict, the letters were eliminated:
 // 0 not O/Q, 1 not I/L, 2 not Z, 5 not S, 8 not B
-const alpha = 'ACDEFGHJKMNPRTUVWXY';
-const numbers = '0123456789';
+const alpha = 'acdefghjkmnprtuvwxy';
+const numbers = '23456789';
 const nanoidAZ = customAlphabet(alpha, 4);
 const nanoidAZ9 = customAlphabet(numbers, 4);