Copyright Policy

1. Didymus Lab's Copyright Compliance Principles

Didymus Lab (the "Service") operates on the fundamental principle that copyright-protected expression is drawn only from openly licensed materials. The expressive portions of the scholarly materials the Service uses are limited to sources whose licenses have been verified in advance, and this policy does not rely on Article 35-5 (Fair Use) of the Korean Copyright Act. The citation or use of facts and ideas not protected by copyright is governed separately (item 5 below).

1. The materials the Service uses are limited to the following licenses:
   • • Public Domain: works for which 70 years have passed since the author's death, or that the rights holder has released into the public domain (e.g., patristic literature, classic preachers and theologians such as Calvin, Spurgeon, and Edwards, Perseus Greek and Roman classics, the Rahlfs LXX)
   • • CC0: works for which the rights holder has waived all rights (e.g., certain DDbDP and EDH inscription materials)
   • • CC-BY 1.0 / 2.0 / 2.5 / 3.0 / 4.0: works permitted for free reuse on condition of attribution (e.g., open-access journal articles such as DOAJ and MDPI Religions)
   Materials whose license cannot be verified, CC-BY-NC (non-commercial) materials, CC-BY-ND (no-derivatives) materials, commercial journal materials, and institutional-subscription materials are automatically blocked at the ingestion stage and are not included in reports.
2. The attribution obligation for CC-BY materials is satisfied through source citations within the report (author, article title, journal, year, pages, DOI, and license notation).
3. Reports are not direct reproductions of the original works, but AI-assisted Korean restructurings, commentary, and meta-analyses.
4. For quality assurance and plagiarism prevention, the operator maintains the following internal guidelines (quality standards distinct from license-compliance obligations):
   • • Direct quotation from any single source is limited to 100 characters or fewer
   • • Korean restatement and commentary must run to at least 300 characters
   • • External quotations make up no more than 30% of the report body
   • • No more than 3 quotations per report are drawn from any single work
5. Use of facts and ideas from journal abstracts (a separate domain): The Service draws on the facts, findings, and views (ideas) of publicly available scholarly research as reflected in its abstracts, and independently restates them with attribution, without reproducing the copyright-protected expression of the original text. Copyright protects only the expression of ideas, not facts and ideas themselves. Specifically, for certain paywalled journal articles, the Service may reference the bibliographic information and abstract metadata provided by public scholarly APIs such as OpenAlex in order to present a single key claim or finding of that article as one factual statement in the report. This is not subject to the license whitelist in item 1 above, and is limited to the use of facts and ideas that copyright does not protect:
   • • The original abstract text is not permanently stored in the operator's database.
   • • The abstract's sentence structure, order of argumentation, condensed phrasing, and layered analysis are not carried over into the report.
   • • Only one key idea per article is presented, once, as a factual statement in the form "○○ argues / holds / proposes / assesses / finds that —." No four-to-six-sentence paraphrase, full summary, or multi-element enumeration is made.
   • • Legal basis: Korean Copyright Act Article 2(1) (the object of protection is the "expression of ideas," not the ideas themselves), U.S. 17 U.S.C. §102(b) (excluding ideas and discoveries from protection), and the consistent interpretation of the EU InfoSoc Directive and the Infopaq doctrine.
   • • A notation (based on a public abstract) is appended at the end of the footnote or bibliographic entry for such material to ensure transparency about the source.

1.1 Sources of Biblical Original-Language Text, Morphology, and Lexical Data

The original-language (Greek and Hebrew) text analysis in reports relies on the following openly licensed data. The attribution obligation for CC-BY materials is satisfied collectively by the source statement on this page (CC BY 4.0 Section 3(a): attribution may be made in any reasonable manner appropriate to the medium, means, and context, and may be satisfied by a central source page):

• • Greek New Testament text — SBL Greek New Testament (SBLGNT). Copyright © 2010 Society of Biblical Literature and Logos Bible Software. CC BY 4.0
• • Greek morphological analysis — unfoldingWord Greek New Testament (UGNT). CC0 1.0 (public domain dedication — no attribution required, but we state the source)
• • Hebrew Old Testament text — Westminster Leningrad Codex (WLC). Public Domain
• • Hebrew morphological analysis — Open Scriptures Hebrew Bible (morphhb). CC BY 4.0
• • Hebrew lexicon — OpenScriptures Hebrew Lexicon. CC BY 4.0

The original-language data above is presented after the operator's own processing — Korean transliteration, grammatical explanation, glossing, editorial layout, and the like (the source data has been partly transformed and restructured) — while the original-language text itself may be displayed verbatim under the open licenses above (CC BY / CC0 / Public Domain). By contrast, the text of copyright-protected translations (such as the Korean Revised Version or the NRSV) is not reproduced in reports, and the word-by-word glosses for original-language terms are written independently by the operator.

2. Copyright Infringement Notice (C&D) Procedure

A rights holder who asserts that their work has been improperly cited or reproduced in a Didymus Lab report may submit an infringement notice in accordance with the following procedure.

2.1 Designated Agent

• Email: copyright@didymuslab.com
• Response hours: weekdays 09:00–18:00 KST

2.2 Required Contents of the Notice

1. Identifying information for the allegedly infringed work (author, title, journal, year, pages)
2. Identifying information for the Didymus Lab report in which the infringement occurred (date received, the passage in the body, and the watermark ID if available)
3. A specific identification of the infringing portion (page, paragraph, and the start and end of the quotation)
4. The notifier's identity and proof of standing (status as copyright holder or agent, and evidence of rights)
5. Contact information (email and phone number)
6. A signed statement that "the contents of this notice are true, and I am the rights holder or a duly authorized agent"

2.3 Processing SLA

1. Within 24 hours: acknowledgment of receipt of the notice, and blocking of the material in question from search results and the new-report generation pipeline
2. Within 48 hours: a reply to the notifier with the outcome (remediation complete / further review required / notice deemed insufficient, with reasons)
3. Within 14 days: notice to members who received existing reports containing the material, together with guidance on remediation of the relevant portion or on the refund procedure

2.4 Record of Processing Outcomes

All infringement notices and their processing outcomes are retained in the operator's internal log (takedown_log). This serves to permanently block any future reuse of the same material, and to evidence the operator's good-faith efforts in the event of a dispute.

3. Member Obligations

1. Members shall not distribute, resell, or post online the reports received from the operator for any purpose other than their own sermon preparation and ministry activities.
2. If a member breaches the above obligation and a third party (such as the original copyright holder) brings an infringement claim against the operator, the member shall indemnify the operator for all damages incurred, in accordance with Article 8 of the Terms of Service.
3. Reports carry visible and invisible watermarks that identify the member to whom they were issued. In the event of an unauthorized leak, the responsible member can be identified.

4. Operator's Disclaimer

1. The operator makes reasonable efforts to stay within the bounds of legitimate citation through the review procedure in Section 1 of this policy.
2. Where the operator promptly handles an infringement notice (the SLA in Section 2.3) and immediately ceases use of the noticed material, the notifier is encouraged to agree not to hold the operator liable for any further infringement arising after the notice.