Auteurs : Romein, C. Annemieke ¹; Hodel, Tobias ²; Gordijn, Femke ³; Zundert, Joris J. van ³; Chagué, Alix ⁴; Lange, Milan van ⁵; Jensen, Helle Strandgaard ⁶; Stauder, Andy ⁷; Purcell, Jake ⁸; Terras, Melissa M. ⁹; Heuvel, Pauline van den ¹⁰; Keijzer, Carlijn ⁵; Rabus, Achim ¹¹; Sitaram, Chantal ¹²; Bhatia, Aakriti ¹²; Depuydt, Katrien ¹³; Afolabi-Adeolu, Mary Aderonke ¹⁴; Anikina, Anastasiia ¹⁵; Bastianello, Elisa ¹⁶; Benzinger, Lukas Vincent ¹⁷; Bosse, Arno ¹⁸; Brown, David ¹⁹; Charlton, Ash ²⁰; Dannevig, André Nilsson ²¹; Gelder, Klaas van ²²; Go, Sabine C.P.J. ¹⁷; Goh, Marcus J.C. ¹⁷; Gstrein, Silvia ²³; Hasan, Sewa ¹⁷; Heide, Stefan von der ²⁴; Hindermann, Maximilian ²⁵; Huff, Dorothee ²⁶; Huysman, Ineke ³; Idris, Ali ¹⁷; Keijzer, Liesbeth ²⁷; Kemper, Simon ²⁷; Koenders, Sanne ¹⁷; Kuijpers, Erika ¹⁷; Rønsig Larsen, Lisette ²⁸; Lepa, Sven ²⁹; Link, Tommy O. ¹⁷; Nispen, Annelies van ⁵; Nockels, Joe ²⁰; Noort, Laura M. van ¹⁷; Oosterhuis, Joost Johannes ³⁰; Popken, Vivien ³¹; Estrella Puertollano, María ¹⁷; Puusaag, Joosep J. ¹⁷; Sheta, Ahmed ³²; Stoop, Lex ³³; Strutzenbladh, Ebba ³⁴; Sijs, Nicoline van der ¹³; Spek, Jan Paul van der ³³; Trouw, Barry Benaissa ³³; Van Synghel, Geertrui ³; Vučković, Vladimir ¹⁷; Wilbrink, Heleen ³⁵; Weiss, Sonia ⁷; Wrisley, David Joseph ³⁶; Zweistra, Riet ³³

• 1 Huygens Institute for the History and Culture of the Netherlands; Vrije Universiteit Amsterdam
• 2 University of Bern
• 3 Huygens Institute for the History and Culture of the Netherlands
• 4 ALMAnaCH, Inria, Paris; Université de Montréal
• 5 NIOD Institute for War, Holocaust, and Genocide Studies
• 6 Aarhus Universitet/ Aarhus University
• 7 READ-COOP SCE
• 8 American Historical Association
• 9 University of Edinburgh
• 10 Amsterdam City Archives
• 11 Albert-Ludwigs-Universität: Freiburg im Breisgau
• 12 KNAW Humanities Cluster Amsterdam
• 13 Instituut voor de Nederlandse Taal
• 14 Bonn Center for Dependency and Slavery Studies at the University of Bonn
• 15 Universiteit van Amsterdam
• 16 Bibliotheca Hertziana – Max Planck Institute for Art History
• 17 Vrije Universiteit Amsterdam
• 18 KNAW Humanities Cluster, Amsterdam
• 19 Trinity College Dublin
• 20 University of Edinburgh; National Library of Scotland
• 21 National Archives of Norway
• 22 Vrije Universiteit Brussel; State Archives Brussels
• 23 University of Innsbruck; State Library of Tyrol
• 24 CCS Content Conversion Specialists GmbH
• 25 University of Basel
• 26 University Library of Tübingen
• 27 Dutch National Archives
• 28 Danish National Archives
• 29 Rahvusarhiiv Estonia
• 30 University of Amsterdam
• 31 Research Centre for Hanse and Baltic History (FGHO)
• 32 Friedrich Alexander Universität Erlangen-Nürnberg
• 33 independent citizen scientist
• 34 University of Aberdeen
• 35 Utrechts Archief
• 36 NYU Abu Dhabi

This paper discusses best practices for sharing and reusing Ground Truth in Handwritten Text Recognition infrastructures, as well as ways to reference and acknowledge contributions to the creation and enrichment of data within these systems. We discuss how one can place Ground Truth data in a repository and, subsequently, inform others through HTR-United. Furthermore, we want to suggest appropriate citation methods for ATR data, models, and contributions made by volunteers. Moreover, when using digitised sources (digital facsimiles), it becomes increasingly important to distinguish between the physical object and the digital collection. These topics all relate to the proper acknowledgement of labour put into digitising, transcribing, and sharing Ground Truth HTR data. This also points to broader issues surrounding the use of machine learning in archival and library contexts, and how the community should begin to acknowledge and record both contributions and data provenance.