OpenChain Japan Advent Calendar 2025

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21 followers

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Category：Organization

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OpenChain Project

OpenChain Project を支援しています。

OpenChain JapanWGによるアドベントカレンダーです。今年もOSSコンプライアンスやSBOM、SPDX、ツールやセキュリティなどに関する様々な情報を投稿していきますのでお楽しみに！
　・OpenChainのWebサイトはこちら
　・OpenChain JapanWGのGitリポジトリはこちら
　・OpenChain JapanWGのSlackはこちら、参加希望の方はこちら
　・OpenChain仕様の参照はこちら
　・2024年のアドベントカレンダーはこちら
　・2023年のアドベントカレンダーはこちら
　・2022年のアドベントカレンダーはこちら
　・2021年のアドベントカレンダーはこちら
　・2020年のアドベントカレンダーはこちら
　・2019年のアドベントカレンダーはこちら

How to join the calendar

You can join the calendar by selecting an available date and registering the URL of the article you wish to link to. If a slot is available, you can go back to a past date to join!

Series 1

Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
30	@AyumiWatanabe Happy Holidays 2025 from OpenChain Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@matt_zeus LF Japan Community Days 2025に参加してOpenChainについて分かったこと Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@AyumiWatanabe Building Trust in the Supply Chain Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@MasatoENDO LF Japan Community Days「基調講演日本のOSPOの拡がり」(Keynote Address: The Expansion of Japan's OSPOs) Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@owada-k LFJ Community Days - 「OSPOの進化～使用から参加、貢献、リーダーシップにどう進むか」 Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@owada-k LFJ Community DaysでのSBOM Basicsについて書きます。 Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use
@AyumiWatanabe Are you ready for CRA ? – SBOM –SBOM Format Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@Tsukasa2021 CRAの話を諸々書きます。 Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@koizumistr ある日突然、ライセンス教育の講師になったら?! - 誌上LF Japan Community Days Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@n-shima 「誰に聞けばいい？」OSSライセンスの疑問を持ち寄ろう！適切な解釈と実践知を協働で議論・共有するFAQサブグループ Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@MasatoENDO OpenChain Specについて（About OpenChain Spec） Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@yuichi-nakamura CNCJの活動について何か書きます Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@sfuji822 Blockchainと分散トラスト@Community Days in Osaka Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use
@Muuhh LF Japan Community Days "Security Track" 振り返り Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@MakotoKobara 仮：LF Japan Community Days 2025 大阪 - FinOpsトラック振り返り Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use		@TaikiKawamura AGL Assessment Automationについて書きます。 Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@ouchi-ogojo InnerSource Summit 2025 ：国際イベントのご紹介 Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@nori0428 今年のSBOM関連の話題について津々浦々 / SBOM Topics for this year Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@K-Hama ORTの最近の更新情報とか？ Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use
@yum41 Open Source Summit Korea 参加レポート Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@gucci56 OSSJイベントレポートかきます Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@ShinsukeKato Open Compliance Summit 参加レポート Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@fukuyasu 総括：open source 2025 Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@MasatoENDO 締めの記事を書きます！ Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	26	27

@AyumiWatanabe
Happy Holidays 2025 from OpenChain
Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here
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Title
URL
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About reserved posting
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@matt_zeus
LF Japan Community Days 2025に参加してOpenChainについて分かったこと
Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here
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About reserved posting
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@AyumiWatanabe
Building Trust in the Supply Chain
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About reserved posting
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@MasatoENDO
LF Japan Community Days「基調講演日本のOSPOの拡がり」(Keynote Address: The Expansion of Japan's OSPOs)
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@owada-k
LFJ Community Days - 「OSPOの進化～使用から参加、貢献、リーダーシップにどう進むか」
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About reserved posting
If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.
About posting period
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@owada-k
LFJ Community DaysでのSBOM Basicsについて書きます。
Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here
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You can post either your article on Qiita or your blog post.
About reserved posting
If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.
About posting period
Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.)
When you participate, we will assume that you have agreed to the terms of use
@AyumiWatanabe
Are you ready for CRA ? – SBOM –SBOM Format
Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here
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When you participate, we will assume that you have agreed to the terms of use
@Tsukasa2021
CRAの話を諸々書きます。
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When you participate, we will assume that you have agreed to the terms of use
@koizumistr
ある日突然、ライセンス教育の講師になったら?! - 誌上LF Japan Community Days
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About reserved posting
If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.
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When you participate, we will assume that you have agreed to the terms of use
@n-shima
「誰に聞けばいい？」OSSライセンスの疑問を持ち寄ろう！適切な解釈と実践知を協働で議論・共有するFAQサブグループ
Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here
Overwrite
Title
URL
You can post either your article on Qiita or your blog post.
About reserved posting
If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.
About posting period
Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.)
When you participate, we will assume that you have agreed to the terms of use
@MasatoENDO
OpenChain Specについて（About OpenChain Spec）
Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here
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You can post either your article on Qiita or your blog post.
About reserved posting
If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.
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When you participate, we will assume that you have agreed to the terms of use
@yuichi-nakamura
CNCJの活動について何か書きます
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@sfuji822
Blockchainと分散トラスト@Community Days in Osaka
Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here
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When you participate, we will assume that you have agreed to the terms of use
@Muuhh
LF Japan Community Days "Security Track" 振り返り
Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here
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If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day.
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When you participate, we will assume that you have agreed to the terms of use
@MakotoKobara
仮：LF Japan Community Days 2025 大阪 - FinOpsトラック振り返り
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When you participate, we will assume that you have agreed to the terms of use
@TaikiKawamura
AGL Assessment Automationについて書きます。
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@ouchi-ogojo
InnerSource Summit 2025 ：国際イベントのご紹介
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@nori0428
今年のSBOM関連の話題について津々浦々 / SBOM Topics for this year
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@K-Hama
ORTの最近の更新情報とか？
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@yum41
Open Source Summit Korea 参加レポート
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@gucci56
OSSJイベントレポートかきます
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@ShinsukeKato
Open Compliance Summit 参加レポート
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@fukuyasu
総括：open source 2025
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@MasatoENDO
締めの記事を書きます！
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Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
30	@AyumiWatanabe Happy Holidays 2025 from OpenChain Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@matt_zeus LF Japan Community Days 2025に参加してOpenChainについて分かったこと Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@AyumiWatanabe Building Trust in the Supply Chain Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@MasatoENDO LF Japan Community Days「基調講演日本のOSPOの拡がり」(Keynote Address: The Expansion of Japan's OSPOs) Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@owada-k LFJ Community Days - 「OSPOの進化～使用から参加、貢献、リーダーシップにどう進むか」 Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@owada-k LFJ Community DaysでのSBOM Basicsについて書きます。 Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use
@AyumiWatanabe Are you ready for CRA ? – SBOM –SBOM Format Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@Tsukasa2021 CRAの話を諸々書きます。 Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@koizumistr ある日突然、ライセンス教育の講師になったら?! - 誌上LF Japan Community Days Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@n-shima 「誰に聞けばいい？」OSSライセンスの疑問を持ち寄ろう！適切な解釈と実践知を協働で議論・共有するFAQサブグループ Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@MasatoENDO OpenChain Specについて（About OpenChain Spec） Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@yuichi-nakamura CNCJの活動について何か書きます Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@sfuji822 Blockchainと分散トラスト@Community Days in Osaka Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use
@Muuhh LF Japan Community Days "Security Track" 振り返り Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@MakotoKobara 仮：LF Japan Community Days 2025 大阪 - FinOpsトラック振り返り Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use		@TaikiKawamura AGL Assessment Automationについて書きます。 Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@ouchi-ogojo InnerSource Summit 2025 ：国際イベントのご紹介 Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@nori0428 今年のSBOM関連の話題について津々浦々 / SBOM Topics for this year Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@K-Hama ORTの最近の更新情報とか？ Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use
@yum41 Open Source Summit Korea 参加レポート Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@gucci56 OSSJイベントレポートかきます Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@ShinsukeKato Open Compliance Summit 参加レポート Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@fukuyasu 総括：open source 2025 Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@MasatoENDO 締めの記事を書きます！ Articles registered in the organization calendar can also be registered in other calendars! 🚀 See details here Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	26	27

@AyumiWatanabe
Happy Holidays 2025 from OpenChain
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@matt_zeus
LF Japan Community Days 2025に参加してOpenChainについて分かったこと
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@AyumiWatanabe
Building Trust in the Supply Chain
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@MasatoENDO
LF Japan Community Days「基調講演日本のOSPOの拡がり」(Keynote Address: The Expansion of Japan's OSPOs)
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@owada-k
LFJ Community Days - 「OSPOの進化～使用から参加、貢献、リーダーシップにどう進むか」
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@owada-k
LFJ Community DaysでのSBOM Basicsについて書きます。
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@AyumiWatanabe
Are you ready for CRA ? – SBOM –SBOM Format
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@Tsukasa2021
CRAの話を諸々書きます。
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@koizumistr
ある日突然、ライセンス教育の講師になったら?! - 誌上LF Japan Community Days
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@n-shima
「誰に聞けばいい？」OSSライセンスの疑問を持ち寄ろう！適切な解釈と実践知を協働で議論・共有するFAQサブグループ
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@MasatoENDO
OpenChain Specについて（About OpenChain Spec）
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@yuichi-nakamura
CNCJの活動について何か書きます
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@sfuji822
Blockchainと分散トラスト@Community Days in Osaka
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@Muuhh
LF Japan Community Days "Security Track" 振り返り
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@MakotoKobara
仮：LF Japan Community Days 2025 大阪 - FinOpsトラック振り返り
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@TaikiKawamura
AGL Assessment Automationについて書きます。
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@ouchi-ogojo
InnerSource Summit 2025 ：国際イベントのご紹介
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@nori0428
今年のSBOM関連の話題について津々浦々 / SBOM Topics for this year
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@K-Hama
ORTの最近の更新情報とか？
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@yum41
Open Source Summit Korea 参加レポート
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@gucci56
OSSJイベントレポートかきます
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@ShinsukeKato
Open Compliance Summit 参加レポート
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@fukuyasu
総括：open source 2025
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@MasatoENDO
締めの記事を書きます！
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OpenChain Japan Advent Calendar 2025

OpenChain Project

edit_calendarHow to join the calendar

Series 1

How to join the calendar