{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:KFE22IZ7QPYNRJFTGQUHYPABW2","short_pith_number":"pith:KFE22IZ7","canonical_record":{"source":{"id":"1607.04285","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-07-14T20:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"dae8c4940b577c6508d84c14c24b5c2dc3d0817dda3d738e05fb658e0eb37456","abstract_canon_sha256":"da388a30e2a19d86b189aedecce209eed1b35a13020a121b28280e1d7663b45b"},"schema_version":"1.0"},"canonical_sha256":"5149ad233f83f0d8a4b334287c3c01b6aa152a574d9e476b4bf43ebf3bea435f","source":{"kind":"arxiv","id":"1607.04285","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.04285","created_at":"2026-05-18T01:10:45Z"},{"alias_kind":"arxiv_version","alias_value":"1607.04285v2","created_at":"2026-05-18T01:10:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.04285","created_at":"2026-05-18T01:10:45Z"},{"alias_kind":"pith_short_12","alias_value":"KFE22IZ7QPYN","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"KFE22IZ7QPYNRJFT","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"KFE22IZ7","created_at":"2026-05-18T12:30:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:KFE22IZ7QPYNRJFTGQUHYPABW2","target":"record","payload":{"canonical_record":{"source":{"id":"1607.04285","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-07-14T20:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"dae8c4940b577c6508d84c14c24b5c2dc3d0817dda3d738e05fb658e0eb37456","abstract_canon_sha256":"da388a30e2a19d86b189aedecce209eed1b35a13020a121b28280e1d7663b45b"},"schema_version":"1.0"},"canonical_sha256":"5149ad233f83f0d8a4b334287c3c01b6aa152a574d9e476b4bf43ebf3bea435f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:45.425999Z","signature_b64":"QGlG8lEGYMUpECtdJZ4Y0DG+P9e9zWWJ2Vuj4DXRgocxuajrF9eW1Tg6hKnQo1uq0Xxc8c7L29fkR8xHMtl4Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5149ad233f83f0d8a4b334287c3c01b6aa152a574d9e476b4bf43ebf3bea435f","last_reissued_at":"2026-05-18T01:10:45.425597Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:45.425597Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.04285","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:10:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rTiIlb4BrhnHufKaQYY4f/UFdMlZeP+8vsoh4Ub9XCUEO1eV+6B/Mzbl4zS5QQ1vvRsCGlQxYAAOBUhRhIyJAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T08:02:46.968771Z"},"content_sha256":"f1cac6f30065387e752d07bb593a923500e3d1df582fa8bbb6d0beebf76141ae","schema_version":"1.0","event_id":"sha256:f1cac6f30065387e752d07bb593a923500e3d1df582fa8bbb6d0beebf76141ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:KFE22IZ7QPYNRJFTGQUHYPABW2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interpreting the evolution of galaxy colours from $z = 8$ to $z = 5$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Benedetta Ciardi, Luca Graziani, Mattia Mancini, Pratika Dayal, Raffaella Schneider, Rosa Valiante, Umberto Maio","submitted_at":"2016-07-14T20:00:03Z","abstract_excerpt":"We attempt to interpret existing data on the evolution of the UV luminosity function and UV colours, $\\beta$, of galaxies at $5 \\leq z \\leq 8$, to improve our understanding of their dust content and ISM properties. To this aim, we post-process the results of a cosmological hydrodynamical simulation with a chemical evolution model, which includes dust formation by supernovae and intermediate mass stars, dust destruction in supernova shocks, and grain growth by accretion of gas-phase elements in dense gas. We find that observations require a steep, Small Magellanic Cloud-like extinction curve an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.04285","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:10:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9Jp7R8Oj5Tqi1B69JavAqTrLgqy2QPbBP7hn30osKy8T+D/Rvvq73mxUmN0vpS/H+VQGbHvIdDeg47+EMPboDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T08:02:46.969400Z"},"content_sha256":"87f50af2cf2220dfbe9e3a902037115b059c14354908e4ded62d8f806c5fa5dc","schema_version":"1.0","event_id":"sha256:87f50af2cf2220dfbe9e3a902037115b059c14354908e4ded62d8f806c5fa5dc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KFE22IZ7QPYNRJFTGQUHYPABW2/bundle.json","state_url":"https://pith.science/pith/KFE22IZ7QPYNRJFTGQUHYPABW2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KFE22IZ7QPYNRJFTGQUHYPABW2/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-03T08:02:46Z","links":{"resolver":"https://pith.science/pith/KFE22IZ7QPYNRJFTGQUHYPABW2","bundle":"https://pith.science/pith/KFE22IZ7QPYNRJFTGQUHYPABW2/bundle.json","state":"https://pith.science/pith/KFE22IZ7QPYNRJFTGQUHYPABW2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KFE22IZ7QPYNRJFTGQUHYPABW2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:KFE22IZ7QPYNRJFTGQUHYPABW2","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"da388a30e2a19d86b189aedecce209eed1b35a13020a121b28280e1d7663b45b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-07-14T20:00:03Z","title_canon_sha256":"dae8c4940b577c6508d84c14c24b5c2dc3d0817dda3d738e05fb658e0eb37456"},"schema_version":"1.0","source":{"id":"1607.04285","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.04285","created_at":"2026-05-18T01:10:45Z"},{"alias_kind":"arxiv_version","alias_value":"1607.04285v2","created_at":"2026-05-18T01:10:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.04285","created_at":"2026-05-18T01:10:45Z"},{"alias_kind":"pith_short_12","alias_value":"KFE22IZ7QPYN","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"KFE22IZ7QPYNRJFT","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"KFE22IZ7","created_at":"2026-05-18T12:30:25Z"}],"graph_snapshots":[{"event_id":"sha256:87f50af2cf2220dfbe9e3a902037115b059c14354908e4ded62d8f806c5fa5dc","target":"graph","created_at":"2026-05-18T01:10:45Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We attempt to interpret existing data on the evolution of the UV luminosity function and UV colours, $\\beta$, of galaxies at $5 \\leq z \\leq 8$, to improve our understanding of their dust content and ISM properties. To this aim, we post-process the results of a cosmological hydrodynamical simulation with a chemical evolution model, which includes dust formation by supernovae and intermediate mass stars, dust destruction in supernova shocks, and grain growth by accretion of gas-phase elements in dense gas. We find that observations require a steep, Small Magellanic Cloud-like extinction curve an","authors_text":"Benedetta Ciardi, Luca Graziani, Mattia Mancini, Pratika Dayal, Raffaella Schneider, Rosa Valiante, Umberto Maio","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-07-14T20:00:03Z","title":"Interpreting the evolution of galaxy colours from $z = 8$ to $z = 5$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.04285","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f1cac6f30065387e752d07bb593a923500e3d1df582fa8bbb6d0beebf76141ae","target":"record","created_at":"2026-05-18T01:10:45Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"da388a30e2a19d86b189aedecce209eed1b35a13020a121b28280e1d7663b45b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-07-14T20:00:03Z","title_canon_sha256":"dae8c4940b577c6508d84c14c24b5c2dc3d0817dda3d738e05fb658e0eb37456"},"schema_version":"1.0","source":{"id":"1607.04285","kind":"arxiv","version":2}},"canonical_sha256":"5149ad233f83f0d8a4b334287c3c01b6aa152a574d9e476b4bf43ebf3bea435f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5149ad233f83f0d8a4b334287c3c01b6aa152a574d9e476b4bf43ebf3bea435f","first_computed_at":"2026-05-18T01:10:45.425597Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:45.425597Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QGlG8lEGYMUpECtdJZ4Y0DG+P9e9zWWJ2Vuj4DXRgocxuajrF9eW1Tg6hKnQo1uq0Xxc8c7L29fkR8xHMtl4Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:45.425999Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.04285","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f1cac6f30065387e752d07bb593a923500e3d1df582fa8bbb6d0beebf76141ae","sha256:87f50af2cf2220dfbe9e3a902037115b059c14354908e4ded62d8f806c5fa5dc"],"state_sha256":"4239b26364bc7ea28e47e40c221fe213ea88f956e3e6e51a6470edb4c5fedf7f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AUMa8aYLSnZz245jJlJ8UgaUhpKc8ox3fiK9+9VqFoUrBxJVmi6p7/OtBg1pvuPuyBL3Dyi7pohwF76ewO/GDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T08:02:46.972629Z","bundle_sha256":"78c797f89aa7294b4ddd6116462b76fdc545af358326a16a4e4b3bfa2e832eba"}}