{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:G2ACQRAQKXWFLTO4BCHSMQLHRD","short_pith_number":"pith:G2ACQRAQ","canonical_record":{"source":{"id":"1303.0961","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-03-05T09:22:38Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"b10e2ff247863c292411f2f3981cff614df1decc102c0abad8f3acd1a3ca6969","abstract_canon_sha256":"fe325cc2d521fd4dbee0bde076683d20dd753881d264ecd0f1f9e76ab1aba442"},"schema_version":"1.0"},"canonical_sha256":"368028441055ec55cddc088f26416788c3d9445fe3dc75b8cbb3ab1e28a2870b","source":{"kind":"arxiv","id":"1303.0961","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.0961","created_at":"2026-05-18T03:19:01Z"},{"alias_kind":"arxiv_version","alias_value":"1303.0961v4","created_at":"2026-05-18T03:19:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.0961","created_at":"2026-05-18T03:19:01Z"},{"alias_kind":"pith_short_12","alias_value":"G2ACQRAQKXWF","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"G2ACQRAQKXWFLTO4","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"G2ACQRAQ","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:G2ACQRAQKXWFLTO4BCHSMQLHRD","target":"record","payload":{"canonical_record":{"source":{"id":"1303.0961","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-03-05T09:22:38Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"b10e2ff247863c292411f2f3981cff614df1decc102c0abad8f3acd1a3ca6969","abstract_canon_sha256":"fe325cc2d521fd4dbee0bde076683d20dd753881d264ecd0f1f9e76ab1aba442"},"schema_version":"1.0"},"canonical_sha256":"368028441055ec55cddc088f26416788c3d9445fe3dc75b8cbb3ab1e28a2870b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:19:01.297404Z","signature_b64":"sSF1Olrkqlodj5ZDD+AEHMolIpS2QG9HGGvnNTEK8sAqNnAmzVBAJ2Mwm6VhGUlQuWkBGk2XQ6WjAts+12vXDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"368028441055ec55cddc088f26416788c3d9445fe3dc75b8cbb3ab1e28a2870b","last_reissued_at":"2026-05-18T03:19:01.296506Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:19:01.296506Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1303.0961","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:19:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rB8ZEZ1MoHcMWdNDinthpDeQg08y/kPKH/XOk3h5b0XBFE4pa4pUTPO/uYR8LrAPPf0ZVEUbxM97YX84o/GZBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T22:13:28.643410Z"},"content_sha256":"26079e1f1984784d93b69116a839ef9c12eac2d3efe758b501b0b5348cbbdda7","schema_version":"1.0","event_id":"sha256:26079e1f1984784d93b69116a839ef9c12eac2d3efe758b501b0b5348cbbdda7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:G2ACQRAQKXWFLTO4BCHSMQLHRD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraining the Anisotropic Expansion of Universe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.CO","authors_text":"Bo Tang, Rong-Gen Cai, Yin-Zhe Ma, Zhong-Liang Tuo","submitted_at":"2013-03-05T09:22:38Z","abstract_excerpt":"We study the possibly existing anisotropy in the accelerating expansion universe with the Union2 Type Ia supernovae data and Gamma-ray burst data. We construct a direction-dependent dark energy model and constrain the anisotropy direction and strength of modulation. We find that the maximum anisotropic deviation direction is $(l,\\,b)=(126^{\\circ},\\,13^{\\circ})$ (or equivalently $(l,\\,b)=(306^{\\circ},\\,-13^{\\circ})$), and the current anisotropy level is $g_0=0.030_{+0.010}^{-0.030}$ ($1\\sigma$ confidence level with Union2 data). Our results do not show strong evidence for the anisotropic dark e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.0961","kind":"arxiv","version":4},"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":"2026-05-18T03:19:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nirx/9dTbzvODDwjmlqa2QfXwC2DmDZTewdLWKiIcdY7dflMwc3jKeyutAcYhdsX8SSBPqh8z6Yy0G2Za3FhDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T22:13:28.644019Z"},"content_sha256":"aad43ff4031e778f4a4fe507eff64b1717c40986a1c874678214c9b117ec2522","schema_version":"1.0","event_id":"sha256:aad43ff4031e778f4a4fe507eff64b1717c40986a1c874678214c9b117ec2522"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G2ACQRAQKXWFLTO4BCHSMQLHRD/bundle.json","state_url":"https://pith.science/pith/G2ACQRAQKXWFLTO4BCHSMQLHRD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G2ACQRAQKXWFLTO4BCHSMQLHRD/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":"2026-05-22T22:13:28Z","links":{"resolver":"https://pith.science/pith/G2ACQRAQKXWFLTO4BCHSMQLHRD","bundle":"https://pith.science/pith/G2ACQRAQKXWFLTO4BCHSMQLHRD/bundle.json","state":"https://pith.science/pith/G2ACQRAQKXWFLTO4BCHSMQLHRD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G2ACQRAQKXWFLTO4BCHSMQLHRD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:G2ACQRAQKXWFLTO4BCHSMQLHRD","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":"fe325cc2d521fd4dbee0bde076683d20dd753881d264ecd0f1f9e76ab1aba442","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-03-05T09:22:38Z","title_canon_sha256":"b10e2ff247863c292411f2f3981cff614df1decc102c0abad8f3acd1a3ca6969"},"schema_version":"1.0","source":{"id":"1303.0961","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.0961","created_at":"2026-05-18T03:19:01Z"},{"alias_kind":"arxiv_version","alias_value":"1303.0961v4","created_at":"2026-05-18T03:19:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.0961","created_at":"2026-05-18T03:19:01Z"},{"alias_kind":"pith_short_12","alias_value":"G2ACQRAQKXWF","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"G2ACQRAQKXWFLTO4","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"G2ACQRAQ","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:aad43ff4031e778f4a4fe507eff64b1717c40986a1c874678214c9b117ec2522","target":"graph","created_at":"2026-05-18T03:19:01Z","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 possibly existing anisotropy in the accelerating expansion universe with the Union2 Type Ia supernovae data and Gamma-ray burst data. We construct a direction-dependent dark energy model and constrain the anisotropy direction and strength of modulation. We find that the maximum anisotropic deviation direction is $(l,\\,b)=(126^{\\circ},\\,13^{\\circ})$ (or equivalently $(l,\\,b)=(306^{\\circ},\\,-13^{\\circ})$), and the current anisotropy level is $g_0=0.030_{+0.010}^{-0.030}$ ($1\\sigma$ confidence level with Union2 data). Our results do not show strong evidence for the anisotropic dark e","authors_text":"Bo Tang, Rong-Gen Cai, Yin-Zhe Ma, Zhong-Liang Tuo","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-03-05T09:22:38Z","title":"Constraining the Anisotropic Expansion of Universe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.0961","kind":"arxiv","version":4},"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":"sha256:26079e1f1984784d93b69116a839ef9c12eac2d3efe758b501b0b5348cbbdda7","target":"record","created_at":"2026-05-18T03:19:01Z","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":"fe325cc2d521fd4dbee0bde076683d20dd753881d264ecd0f1f9e76ab1aba442","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-03-05T09:22:38Z","title_canon_sha256":"b10e2ff247863c292411f2f3981cff614df1decc102c0abad8f3acd1a3ca6969"},"schema_version":"1.0","source":{"id":"1303.0961","kind":"arxiv","version":4}},"canonical_sha256":"368028441055ec55cddc088f26416788c3d9445fe3dc75b8cbb3ab1e28a2870b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"368028441055ec55cddc088f26416788c3d9445fe3dc75b8cbb3ab1e28a2870b","first_computed_at":"2026-05-18T03:19:01.296506Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:19:01.296506Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sSF1Olrkqlodj5ZDD+AEHMolIpS2QG9HGGvnNTEK8sAqNnAmzVBAJ2Mwm6VhGUlQuWkBGk2XQ6WjAts+12vXDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:19:01.297404Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.0961","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:26079e1f1984784d93b69116a839ef9c12eac2d3efe758b501b0b5348cbbdda7","sha256:aad43ff4031e778f4a4fe507eff64b1717c40986a1c874678214c9b117ec2522"],"state_sha256":"79c0a3212e371d6ba6fc9f83ea3fb10d11ccd04b7a82c403bd7f6047ccace0b9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"USjp36/p6ButOk7JasbI+aoVvhT7mpp33p1d5iEQvSdYGuu8Do8Q17N5BaGgaESHS+tUEGW1vkce2IlFirgpCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T22:13:28.647013Z","bundle_sha256":"6791184ecde9e37a440edc290552d42301fef5d657f1b2077f7e35278bbf55f9"}}