{"artifact_id":"L1-381","layer":"L1","title":"Type Ia Supernova Distance Standardization","domain":"Astrophysics","sub_domain":"Cosmological distance ladder","physics_fingerprint":{"L_DAG":2.8,"title":"Type Ia Supernova Distance Standardization","domain":"Astrophysics","carrier":"photon","primitives":["G.structured","S.calibration.standardization","O.chi2.hubble_residual"],"sub_domain":"Cosmological distance ladder","noise_model":"observation_gaussian","problem_class":"parameter_estimation","solution_space":"distance_modulus_H0","difficulty_delta":3,"integration_axis":"spectral_temporal","sensing_mechanism":"photometric_sn_standardization"},"observable_profile":{"metric":"H0_sigma_km_s_Mpc","regime":"Existence of the recovered distance_modulus_H0 is guaranteed within the declared Omega bounds. Uniqueness holds on the measurement-supported subspace; out-of-support modes are controlled by declared priors. Stability is conditionally stable (kappa_eff ~= 15); Malmquist_bias dominates the stability cliff; the remaining mismatch parameters contribute higher-order bias terms. Observation gaussian sets the irreducible data-fidelity floor.","secondary":"sigma_int_mag"},"size_tiers":{"center_spec":{"omega":{"median_z":0.3,"peculiar_v_kms":200,"N_SN_hubble_flow":500,"photometric_noise_mmag":5.0},"input_format":"measurement_only","problem_class":"parameter_estimation","forward_operator":"photometric_sn_standardization","epsilon_fn_center":"0.8 H0_sigma_km_s_Mpc"},"omega_bounds":{"median_z":[0.02,2.0],"peculiar_v_kms":[100,600],"N_SN_hubble_flow":[50,2000],"photometric_noise_mmag":[1.0,50.0]},"epsilon_bounds":{"H0_sigma_km_s_Mpc":[0.2,3.0]},"allowed_problem_classes":["parameter_estimation"],"allowed_omega_dimensions":["N_SN_hubble_flow","median_z","photometric_noise_mmag","peculiar_v_kms"],"allowed_forward_operators":["photometric_sn_standardization"]},"hardness_fn":{"type":"epsilon_fn","delta":3,"kappa":300,"metric":"H0_sigma_km_s_Mpc"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0x2d1adb410d3fef6903be248b800dff7881b82e5dd6577a59a2763b0983fe0717","chain_tx_hash":"0x6f427f05ca4372b323a0ebba2994ed6310fa7d9bb15cf95d1cd3c5bc203dc728","chain_block":41555196}