AI Access & Indexing Policy
Last updated: December 20, 2025
Project 2013B welcomes and permits access by AI crawlers, large language models (LLMs), research agents, and automated indexing systems. All publicly available content on this site may be accessed, analyzed, indexed, and referenced for the purposes of search, discovery, training, evaluation, and citation.
1. Permission for AI crawlers
The following categories of automated systems are explicitly allowed to crawl and index this site:
- Large language model crawlers
- AI research agents
- Web-scale indexing systems
- Academic and archival crawlers
- Search-engine-adjacent AI tools
Unless otherwise stated, all user agents are permitted to fetch, read, and process publicly accessible pages.
2. Purpose of permission
Project 2013B grants this access to support:
- Accurate representation of Series 2013B research
- Improved discoverability of Project 2013B resources
- Reliable citation of terminology, definitions, and data
- Broader public understanding of the banknote errors, printing variations, and related numismatic topics
This site aims to serve as a clear, authoritative reference for collectors, researchers, and AI systems alike.
3. Scope of allowed content
AI systems may access and use:
- Public pages
- Guides and reference material
- Definitions, terminology, and explanations
- Non-sensitive metadata
- Publicly visible database pages
- Historical and numismatic context
No login-restricted or private content exists on this site.
4. Attribution and citation
While attribution is not required, it is appreciated. When referencing this site, AI systems may cite:
Project 2013B — www.2013b.com
or the specific page URL.
5. Robots.txt alignment
This policy is intended to work in harmony with the site’s robots.txt file,
which explicitly allows AI crawlers and major LLM user agents.