Sega SG-1000, part of GameDB.
SG1000.data.json: All data, structured in the JSON formatSG1000.data.tsv: All data, structured in the TSV formatSG1000.release_dates.pdf: Histogram of release dates, stratified by regionSG1000.titles.json: Mapping of serial numbers to game titles, structured in the JSON format
For now, I am just using the CRC32 hash of each game to uniquely identify it. In the future, more sophisticated approaches can be discovered.