{"artifact_id":"L2-911","layer":"L2","parent_l1":"L1-911","title":"Boundary-to-Bulk Reconstruction Twin","omega":{"dims":{"state":"vacuum|thermal|excited","cutoff":[0.01,0.2],"central_charge":[1,100]},"type":"range"},"epsilon":{"type":"fn","expression":"≤ 5% bulk-metric error; RT inequalities (strong subadditivity) respected"},"difficulty_score":0.9,"delta_tier":50,"fingerprint":"6d2ee8780052cae4e184566f4eeffb5223cfde421d1a903141ff612a1ad8d35f","status":"testnet","submitted_by":"grand_challenge_genesis","chain_hash":null,"chain_tx_hash":null,"chain_block":null,"plain_intro":"Boundary-to-Bulk Reconstruction Twin is a digital twin specification derived from principle L1-911. It defines the forward operator and a 3-dimensional parameter space Ω over which benchmarks are seeded. Each benchmark drawn from this twin is a concrete measurement instance with fixed Ω values; solvers must invert that specific measurement."}