{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:UL7YVT2YDAMB7VNPHL3W7XZGP7","short_pith_number":"pith:UL7YVT2Y","canonical_record":{"source":{"id":"1905.10492","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-05-25T01:17:51Z","cross_cats_sorted":[],"title_canon_sha256":"8bb87ec3ffb94c36cae165b1908aa56ed6476f96deac4d4bc92382f60ff41d5a","abstract_canon_sha256":"10a049bbae127d021c705f5984edffa99d2bf061b6d57e5f61d53be21652a225"},"schema_version":"1.0"},"canonical_sha256":"a2ff8acf5818181fd5af3af76fdf267ffb154e2bb2d515c0a6284059efbe5d55","source":{"kind":"arxiv","id":"1905.10492","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.10492","created_at":"2026-05-17T23:45:08Z"},{"alias_kind":"arxiv_version","alias_value":"1905.10492v1","created_at":"2026-05-17T23:45:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.10492","created_at":"2026-05-17T23:45:08Z"},{"alias_kind":"pith_short_12","alias_value":"UL7YVT2YDAMB","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UL7YVT2YDAMB7VNP","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UL7YVT2Y","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:UL7YVT2YDAMB7VNPHL3W7XZGP7","target":"record","payload":{"canonical_record":{"source":{"id":"1905.10492","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-05-25T01:17:51Z","cross_cats_sorted":[],"title_canon_sha256":"8bb87ec3ffb94c36cae165b1908aa56ed6476f96deac4d4bc92382f60ff41d5a","abstract_canon_sha256":"10a049bbae127d021c705f5984edffa99d2bf061b6d57e5f61d53be21652a225"},"schema_version":"1.0"},"canonical_sha256":"a2ff8acf5818181fd5af3af76fdf267ffb154e2bb2d515c0a6284059efbe5d55","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:45:08.339942Z","signature_b64":"tJRsvc3dqTOtvQq4PD1e25vbYPS8VZ7u2Wvmoz4pXGo01x25QPVJQlzxvx5queop8yyUBy0XkHIiNyLULFBOBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a2ff8acf5818181fd5af3af76fdf267ffb154e2bb2d515c0a6284059efbe5d55","last_reissued_at":"2026-05-17T23:45:08.339360Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:45:08.339360Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.10492","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":"2026-05-17T23:45:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zf56gaHq9HZXjEJ0atTm5yO4PiYFHFJEQKcKnGRqOapNswdEYBzknpKNV4mqnVpBAVYagYliDaUb06+A1jcODw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T06:09:56.420107Z"},"content_sha256":"5f86dea20ae48a67526f46f91513e2c8f019ce8b02218dd04e8b9ae9e4a0d47e","schema_version":"1.0","event_id":"sha256:5f86dea20ae48a67526f46f91513e2c8f019ce8b02218dd04e8b9ae9e4a0d47e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:UL7YVT2YDAMB7VNPHL3W7XZGP7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reconstruction of the Cosmic Equation of State for High Redshift","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. M. Velasquez-Toribio, Julio C. Fabris, M. M. Machado","submitted_at":"2019-05-25T01:17:51Z","abstract_excerpt":"We investigate the possibilities of reconstructing the cosmic equation of state (EoS) for high redshift. In order to obtain general results, we use two model-independent approaches. The first reconstructs the EoS using comoving distance and the second makes use of the Hubble parameter data. To implement the first method, we use a recent set of Gamma-Ray Bursts (GRBs) measures. To implement the second method, we generate simulated data using the Sandage-Loeb ($SL$) effect; for the fiducial model, we use the $\\Lambda CDM$ model. In both cases, the statistical analysis is conducted through the Ga"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.10492","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":"2026-05-17T23:45:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MEG8HMFhil4n4lFRw3X5fhFCB1s3MyT79+0taSTL/xFxcME3LKTs0/jFxilzAOg08qyEzTYVfkXt/Q1Wkl57DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T06:09:56.420544Z"},"content_sha256":"bcb275e66430919db6b1769b6fcc989bf83ea43692cb6934d42ed2cc07105adf","schema_version":"1.0","event_id":"sha256:bcb275e66430919db6b1769b6fcc989bf83ea43692cb6934d42ed2cc07105adf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UL7YVT2YDAMB7VNPHL3W7XZGP7/bundle.json","state_url":"https://pith.science/pith/UL7YVT2YDAMB7VNPHL3W7XZGP7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UL7YVT2YDAMB7VNPHL3W7XZGP7/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":"2026-05-31T06:09:56Z","links":{"resolver":"https://pith.science/pith/UL7YVT2YDAMB7VNPHL3W7XZGP7","bundle":"https://pith.science/pith/UL7YVT2YDAMB7VNPHL3W7XZGP7/bundle.json","state":"https://pith.science/pith/UL7YVT2YDAMB7VNPHL3W7XZGP7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UL7YVT2YDAMB7VNPHL3W7XZGP7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UL7YVT2YDAMB7VNPHL3W7XZGP7","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":"10a049bbae127d021c705f5984edffa99d2bf061b6d57e5f61d53be21652a225","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-05-25T01:17:51Z","title_canon_sha256":"8bb87ec3ffb94c36cae165b1908aa56ed6476f96deac4d4bc92382f60ff41d5a"},"schema_version":"1.0","source":{"id":"1905.10492","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.10492","created_at":"2026-05-17T23:45:08Z"},{"alias_kind":"arxiv_version","alias_value":"1905.10492v1","created_at":"2026-05-17T23:45:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.10492","created_at":"2026-05-17T23:45:08Z"},{"alias_kind":"pith_short_12","alias_value":"UL7YVT2YDAMB","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UL7YVT2YDAMB7VNP","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UL7YVT2Y","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:bcb275e66430919db6b1769b6fcc989bf83ea43692cb6934d42ed2cc07105adf","target":"graph","created_at":"2026-05-17T23:45:08Z","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 investigate the possibilities of reconstructing the cosmic equation of state (EoS) for high redshift. In order to obtain general results, we use two model-independent approaches. The first reconstructs the EoS using comoving distance and the second makes use of the Hubble parameter data. To implement the first method, we use a recent set of Gamma-Ray Bursts (GRBs) measures. To implement the second method, we generate simulated data using the Sandage-Loeb ($SL$) effect; for the fiducial model, we use the $\\Lambda CDM$ model. In both cases, the statistical analysis is conducted through the Ga","authors_text":"A. M. Velasquez-Toribio, Julio C. Fabris, M. M. Machado","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-05-25T01:17:51Z","title":"Reconstruction of the Cosmic Equation of State for High Redshift"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.10492","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":"sha256:5f86dea20ae48a67526f46f91513e2c8f019ce8b02218dd04e8b9ae9e4a0d47e","target":"record","created_at":"2026-05-17T23:45:08Z","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":"10a049bbae127d021c705f5984edffa99d2bf061b6d57e5f61d53be21652a225","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-05-25T01:17:51Z","title_canon_sha256":"8bb87ec3ffb94c36cae165b1908aa56ed6476f96deac4d4bc92382f60ff41d5a"},"schema_version":"1.0","source":{"id":"1905.10492","kind":"arxiv","version":1}},"canonical_sha256":"a2ff8acf5818181fd5af3af76fdf267ffb154e2bb2d515c0a6284059efbe5d55","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2ff8acf5818181fd5af3af76fdf267ffb154e2bb2d515c0a6284059efbe5d55","first_computed_at":"2026-05-17T23:45:08.339360Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:08.339360Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tJRsvc3dqTOtvQq4PD1e25vbYPS8VZ7u2Wvmoz4pXGo01x25QPVJQlzxvx5queop8yyUBy0XkHIiNyLULFBOBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:08.339942Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.10492","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f86dea20ae48a67526f46f91513e2c8f019ce8b02218dd04e8b9ae9e4a0d47e","sha256:bcb275e66430919db6b1769b6fcc989bf83ea43692cb6934d42ed2cc07105adf"],"state_sha256":"11f37f26d45915f4d1f0f7e8a6f7d80a742f2aa52d6cac7ac7aac660e38b556c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FmGX9enpdR8j12gyHyN5NEvlUcBUFj2FjGph6mY9cd3YPlep8ar0IKikNmIvyy0ZH3dppBl/Y6R/3anm2gNADQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T06:09:56.423122Z","bundle_sha256":"9906c5ae3c6e4e200a15177ab2e28d54a2bf4be8d9c26212c5b17a59b82600c9"}}