{"count":1,"since":null,"types":["price_drop","price_increase","new_price","new_product","new_ai_agent","new_integration","new_alternative","security_certification","product_change","documented","research_update","funding","acquisition","source_changed"],"statement_id":"st_4a833c59c5ce735f2ee5","contract":"A change to a state that describes our research (unknown, estimated) is a research_update, never a change to the product. source_changed is a hash difference of the page text and carries no judgement.","changes":[{"id":"75890","type":"documented","label":"First documented","material":true,"sentence":"Barnes & Noble: Headquarters documented as US (verified). A first finding of ours, not a change at the vendor.","noticed_at":"2026-09-04T12:52:25.298Z","subject":{"kind":"organization","slug":"barnes-and-noble","name":"Barnes & Noble"},"before":{"value":null,"verification_state":"unknown","confidence":0},"after":{"value":"US","verification_state":"verified","confidence":90},"claim_id":"5473fee4-4ef4-4b4a-8040-1ae53c8917e4","statement_id":"st_4a833c59c5ce735f2ee5","corrected":null}]}