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+
+# Fatcat Production Import CHANGELOG
+
+This file tracks major content (metadata) imports to the Fatcat production
+database (at https://fatcat.wiki). It complements the code CHANGELOG file.
+
+In general, changes that impact more than 50k entities will get logged here;
+this file should probably get merged into the guide at some point.
+
+This file should not turn in to a TODO list!
+
+## 2019-09
+
+Created and updated metadata for tens of thousands of containers, using
+"chocula" pipeline.
+
+
+## 2019-08
+
+Merged/fixed roughly 100 container entities with invalid ISSN-L numbers (eg,
+invalid ISSN checksum).
+
+## 2019-04
+
+Imported files (matched to releases by DOI) from Semantic Scholar
+(`DIRECT-OA-CRAWL-2019` crawl).
+
+    Arabesque importer
+    crawl-bot
+    `s2_doi.sqlite`
+    TODO: archive.org link
+    TODO: rough count
+    TODO: date
+
+Imported files (matched to releases by DOI) from pre-1923/pre-1909 items uploaded
+by a user to archive.org.
+
+    Matched importer
+    internetarchive-bot (TODO:)
+    TODO: archive.org link
+    TODO: counts
+    TODO: date
+
+Imported files (matched to releases by DOI) from CORE.ac.uk
+(`DIRECT-OA-CRAWL-2019` crawl).
+
+Imported files (matched to releases by DOI) from the public web (including many
+repositories) from the `UNPAYWALL` 2018 crawl.
+
+## 2019-02
+
+Bootstrapped!