> For the complete documentation index, see [llms.txt](https://experience-digital-transform.gitbook.io/experience-digital-transformation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://experience-digital-transform.gitbook.io/experience-digital-transformation/building-block/the-public-sources.md).
# The public sources
The public sources this guide cites, each with its edition or date and the address where it can be read.
Every source below is public. The short name in the first column is the one the subtopic pages use. Each source is given with its edition or its date, as it was read, and with the address where it can be read.
| Short name | Source, with its edition or date | Address |
| ------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- |
| **PAERA** | *Public Administration Ecosystem Reference Architecture (PAERA)*, version 1.0, GovStack, dated 25.05.2024. Cited by section. The site shows no version or date on its pages, only "Last updated 2 years ago" (read 4 October 2026). | |
| **UNDP DPI page** | UNDP, "Digital public infrastructure", web page | |
| **UNDP Compendium** | UNDP, *Accelerating the SDGs through Digital Public Infrastructure: A Compendium of the Potential of Digital Public Infrastructure*, 21 August 2023 | |
| **REG** | GovStack, Registration Building Block specification, the site's default edition (site label "23Q4", version history to 1.0) | |
| **DR and DRS** | GovStack, Digital Registries Building Block specification, "Version 3.0-alpha; June 2026". DR names a section, DRS a numbered requirement. | |
| **ID** | GovStack, Identity Building Block specification, "Version 2.0; December 2025" | |
| **PAY** | GovStack, Payments Building Block specification, "Version 3.0; December 2025" | |
| **IM** | GovStack, Information Mediator Building Block specification, version 1.1.1 (the page label shows "1.1"; its version history table ends at 1.1.1) | |
| **CON** | GovStack, Consent Building Block specification, version 1.3.0 | |
| **GovStack Architecture** | GovStack, Architecture specification, edition 2.2.0 as the page label shows it on 4 October 2026 (its version history table ends at 2.1.0, released 13 March 2026) | |
| **X-Road documents** | NIIS, X-Road release 7.7.0: Architecture (ARC-G), Message Protocol for REST (PR-REST) | |
| **OpenAPI** | OpenAPI Initiative, OpenAPI Specification, version 3.0.3 | |
| **EIF** | European Commission, European Interoperability Framework, cited through the interoperability course, which teaches its four layers | |
| **Joget documentation** | Joget DX 9 Knowledge Base, the DX9 edition of the platform's published documentation, which lists release 9.0.7, the version the education application runs on (Joget DX 9.0.7 Enterprise); change log page last modified 17 August 2026 | |
| **WF** | GovStack, Workflow Building Block specification, the site's default edition (site label "23Q4", version history to 1.0) | |
| **VC** | W3C, Verifiable Credentials Data Model v2.0, W3C Recommendation, 15 May 2025 | |
| **OIDC** | OpenID Foundation, OpenID Connect Core 1.0 incorporating errata set 2, 15 December 2023, as the Identity specification uses it | |
## How the specifications are cited
References to the GovStack specifications are written as follows: REG ยง6.3.2.7 is the section of that number in the Registration specification; DRS-33 is the Digital Registries requirement of that number; ID 6.2-r2 is the second requirement under heading 6.2 of the Identity specification, which does not number its requirements. Every block is cited by its edition. The Digital Registries edition is an early release whose requirement numbers may change again, so a registry requirement is cited by its number and its short title together. A PAERA section is cited by its number, as in PAERA 2.3.
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