stage	experiment_id	marketplace	asin	child_asin	experiment_type	image_slot	hypothesis	control_asset	treatment_asset	immutable_fields	primary_metric	commercial_threshold	guardrails	start_at_utc	platform_result_at_utc	merchant_decision_at_utc	result	decision	owner
preregister	example-amz-img-001	US	EXAMPLE-NTH-PLN-001	EXAMPLE-NTH-PLN-001	product_image	main	Increasing measured product width from 71.75% to 84.75% improves units sold per unique visitor without product-truth or return harm	control-a-v1.webp	treatment-b-v1.webp	child ASIN; sold product; source pixels; price; offer; inventory policy; traffic plan	units sold per unique visitor	positive contribution scenario after fees and expected returns	product truth; image-role policy; wrong-item contacts; refunds; matured returns				preregistered	await eligibility and review	marketplace-growth
scheduled	example-amz-img-001	US	EXAMPLE-NTH-PLN-001	EXAMPLE-NTH-PLN-001	product_image	main	Increasing measured product width from 71.75% to 84.75% improves units sold per unique visitor without product-truth or return harm	control-a-v1.webp	treatment-b-v1.webp	child ASIN; sold product; source pixels; price; offer; inventory policy; traffic plan	units sold per unique visitor	positive contribution scenario after fees and expected returns	product truth; image-role policy; wrong-item contacts; refunds; matured returns	2026-09-01T16:00:00Z			scheduled example	wait for Amazon completion	marketplace-growth
decision	example-amz-img-001	US	EXAMPLE-NTH-PLN-001	EXAMPLE-NTH-PLN-001	product_image	main	Increasing measured product width from 71.75% to 84.75% improves units sold per unique visitor without product-truth or return harm	control-a-v1.webp	treatment-b-v1.webp	child ASIN; sold product; source pixels; price; offer; inventory policy; traffic plan	units sold per unique visitor	positive contribution scenario after fees and expected returns	product truth; image-role policy; wrong-item contacts; refunds; matured returns	2026-09-01T16:00:00Z	2026-10-20T16:00:00Z	2026-11-17T16:00:00Z	fictional example; no Amazon result	keep control until real evidence	marketplace-growth