{"_note":"This is a mock response. Real verification is FREE and checks the Aegis perceptual hash index.","_sandbox":true,"best_match":{"artist":"Claude (Opus 4.6) + Artiswa Creatio","gcx_id":"GCX00042","provenance_uri":"ar://li1CQj7jC7dfeOntEDXS75ZOHpYmmBH_8edNIhmkIMA","similarity":1.0,"title":"The Pilgrim's Path to the Emerald Soul"},"computed_hash":"a1b2c3d4e5f67890abcdef1234567890abcdef1234567890abcdef1234567890","confidence":1.0,"cost":{"gcx":0,"note":"Always free","usd":0.0},"match_found":true,"next_steps":[{"action":"get_artwork","cost":"1 GCX ($0.10)","endpoint":"POST /api/tools/get_artwork","why":"Get full Human_Standard metadata + signed image URL for the matched artwork"},{"action":"get_artwork_oracle","cost":"2 GCX ($0.20)","endpoint":"POST /api/tools/get_artwork_oracle","why":"Get Hybrid_Premium 111-field deep AI analysis of the matched artwork"}],"total_matches":1}