{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:UYZWBUIVXBYVMKOVGEMPOYCUR7","short_pith_number":"pith:UYZWBUIV","canonical_record":{"source":{"id":"1210.2805","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-10-10T05:08:31Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"79c64e3db0d5d43aa2a9e09a0aacfe3c583d01433ada1ba7c4b7dd43b0c2e2fe","abstract_canon_sha256":"97b8a824e68e591079b7dc5a53f8936f5feac19017e65f99e1f49fb4ba4dc79c"},"schema_version":"1.0"},"canonical_sha256":"a63360d115b8715629d53118f760548fd00472f22fe49565841ef8ee0c19dfc4","source":{"kind":"arxiv","id":"1210.2805","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.2805","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"arxiv_version","alias_value":"1210.2805v1","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.2805","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"pith_short_12","alias_value":"UYZWBUIVXBYV","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"UYZWBUIVXBYVMKOV","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"UYZWBUIV","created_at":"2026-05-18T12:27:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:UYZWBUIVXBYVMKOVGEMPOYCUR7","target":"record","payload":{"canonical_record":{"source":{"id":"1210.2805","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-10-10T05:08:31Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"79c64e3db0d5d43aa2a9e09a0aacfe3c583d01433ada1ba7c4b7dd43b0c2e2fe","abstract_canon_sha256":"97b8a824e68e591079b7dc5a53f8936f5feac19017e65f99e1f49fb4ba4dc79c"},"schema_version":"1.0"},"canonical_sha256":"a63360d115b8715629d53118f760548fd00472f22fe49565841ef8ee0c19dfc4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:03.640443Z","signature_b64":"CYgSIABV9o2InA4eWiQ6qIvKFuUuMC+Rx4Wtff9whjVz59iXdfThrvp9Z+exmtkt1LHAtTg+viGZdG4P1MLyAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a63360d115b8715629d53118f760548fd00472f22fe49565841ef8ee0c19dfc4","last_reissued_at":"2026-05-18T01:54:03.639949Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:03.639949Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.2805","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:54:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nvAOWJ1srhFCW3jyoeYK7C77Cp6Hmxjgx3uHs7lGQ9mWCUKdYUVA35QO/bZaNV0+5XKAtMfcK1+5fpNS1LgBCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T00:40:14.462108Z"},"content_sha256":"70880246bfebc0c6827c4218bf5adc318bb5e00c22cc2f231d28b53575113a22","schema_version":"1.0","event_id":"sha256:70880246bfebc0c6827c4218bf5adc318bb5e00c22cc2f231d28b53575113a22"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:UYZWBUIVXBYVMKOVGEMPOYCUR7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Is the Cosmic Transparency Spatially Homogeneous?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"gr-qc","authors_text":"Hongwei Yu, Jun Chen, Puxun Wu, Zhengxiang Li","submitted_at":"2012-10-10T05:08:31Z","abstract_excerpt":"We study the constraints on the cosmic opacity using the latest BAO and Union2 SNIa data in this paper and find that the best fit values seem to indicate that an opaque universe is preferred in redshift regions $0.20-0.35$, $0.35-0.44$ and $0.60-0.73$, whereas, a transparent universe is favored in redshift regions $0.106-0.20$, $0.44-0.57$and $0.57-0.60$. However, our result is still consistent with a transparent universe at the 1$\\sigma$ confidence level, even though the best-fit cosmic opacity oscillates between zero and some nonzero values as the redshift varies."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.2805","kind":"arxiv","version":1},"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":"2026-05-18T01:54:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6s+FdJM0UBzb7dNYNIboufx+yt+Mp3SJHdQYtrAIrYl6Qe4D8nA5KPzg2Hr/s5raYzIJUUwKalgBD+37ylKuAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T00:40:14.462816Z"},"content_sha256":"018e3f0ee8651f26dc2dd36dcdd85c177507c2141fc440031f5b67a167e7824d","schema_version":"1.0","event_id":"sha256:018e3f0ee8651f26dc2dd36dcdd85c177507c2141fc440031f5b67a167e7824d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UYZWBUIVXBYVMKOVGEMPOYCUR7/bundle.json","state_url":"https://pith.science/pith/UYZWBUIVXBYVMKOVGEMPOYCUR7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UYZWBUIVXBYVMKOVGEMPOYCUR7/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":"2026-06-11T00:40:14Z","links":{"resolver":"https://pith.science/pith/UYZWBUIVXBYVMKOVGEMPOYCUR7","bundle":"https://pith.science/pith/UYZWBUIVXBYVMKOVGEMPOYCUR7/bundle.json","state":"https://pith.science/pith/UYZWBUIVXBYVMKOVGEMPOYCUR7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UYZWBUIVXBYVMKOVGEMPOYCUR7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:UYZWBUIVXBYVMKOVGEMPOYCUR7","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":"97b8a824e68e591079b7dc5a53f8936f5feac19017e65f99e1f49fb4ba4dc79c","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-10-10T05:08:31Z","title_canon_sha256":"79c64e3db0d5d43aa2a9e09a0aacfe3c583d01433ada1ba7c4b7dd43b0c2e2fe"},"schema_version":"1.0","source":{"id":"1210.2805","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.2805","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"arxiv_version","alias_value":"1210.2805v1","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.2805","created_at":"2026-05-18T01:54:03Z"},{"alias_kind":"pith_short_12","alias_value":"UYZWBUIVXBYV","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"UYZWBUIVXBYVMKOV","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"UYZWBUIV","created_at":"2026-05-18T12:27:25Z"}],"graph_snapshots":[{"event_id":"sha256:018e3f0ee8651f26dc2dd36dcdd85c177507c2141fc440031f5b67a167e7824d","target":"graph","created_at":"2026-05-18T01:54:03Z","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 study the constraints on the cosmic opacity using the latest BAO and Union2 SNIa data in this paper and find that the best fit values seem to indicate that an opaque universe is preferred in redshift regions $0.20-0.35$, $0.35-0.44$ and $0.60-0.73$, whereas, a transparent universe is favored in redshift regions $0.106-0.20$, $0.44-0.57$and $0.57-0.60$. However, our result is still consistent with a transparent universe at the 1$\\sigma$ confidence level, even though the best-fit cosmic opacity oscillates between zero and some nonzero values as the redshift varies.","authors_text":"Hongwei Yu, Jun Chen, Puxun Wu, Zhengxiang Li","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-10-10T05:08:31Z","title":"Is the Cosmic Transparency Spatially Homogeneous?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.2805","kind":"arxiv","version":1},"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":"sha256:70880246bfebc0c6827c4218bf5adc318bb5e00c22cc2f231d28b53575113a22","target":"record","created_at":"2026-05-18T01:54:03Z","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":"97b8a824e68e591079b7dc5a53f8936f5feac19017e65f99e1f49fb4ba4dc79c","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-10-10T05:08:31Z","title_canon_sha256":"79c64e3db0d5d43aa2a9e09a0aacfe3c583d01433ada1ba7c4b7dd43b0c2e2fe"},"schema_version":"1.0","source":{"id":"1210.2805","kind":"arxiv","version":1}},"canonical_sha256":"a63360d115b8715629d53118f760548fd00472f22fe49565841ef8ee0c19dfc4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a63360d115b8715629d53118f760548fd00472f22fe49565841ef8ee0c19dfc4","first_computed_at":"2026-05-18T01:54:03.639949Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:03.639949Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CYgSIABV9o2InA4eWiQ6qIvKFuUuMC+Rx4Wtff9whjVz59iXdfThrvp9Z+exmtkt1LHAtTg+viGZdG4P1MLyAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:03.640443Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.2805","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:70880246bfebc0c6827c4218bf5adc318bb5e00c22cc2f231d28b53575113a22","sha256:018e3f0ee8651f26dc2dd36dcdd85c177507c2141fc440031f5b67a167e7824d"],"state_sha256":"33726a7e1dcad32ff6226a86c9246a4b86f54cc573e58d8bcc38f91278f99e85"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CGbUrbswkEqY/gffczS5jLNxv6lmiPBvnZplOaajdoaC+rKBTfe35/dQjgVVjl2DUVCgdMq/sJrP2m/Kzw85BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T00:40:14.466680Z","bundle_sha256":"fbc3c84493ce81c02ff8f44b000f4a411be9eb98d9e493f6862cd53b13563c5b"}}