{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:C7WFZVHLSPM4CGLK36P5C554L4","short_pith_number":"pith:C7WFZVHL","canonical_record":{"source":{"id":"1701.03362","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-01-11T05:38:50Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"7a591dab88a01af76a02867e69a6e334be00bde0a354c41688e8696740cacf56","abstract_canon_sha256":"8a35d9d3664e4051c9f3d661bf52b50e84a3b321538ec9403463c1fd5d0903b5"},"schema_version":"1.0"},"canonical_sha256":"17ec5cd4eb93d9c1196adf9fd177bc5f0247d2690d39792d2c7ad899cfa7ce8d","source":{"kind":"arxiv","id":"1701.03362","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.03362","created_at":"2026-05-18T00:43:35Z"},{"alias_kind":"arxiv_version","alias_value":"1701.03362v1","created_at":"2026-05-18T00:43:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.03362","created_at":"2026-05-18T00:43:35Z"},{"alias_kind":"pith_short_12","alias_value":"C7WFZVHLSPM4","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"C7WFZVHLSPM4CGLK","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"C7WFZVHL","created_at":"2026-05-18T12:31:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:C7WFZVHLSPM4CGLK36P5C554L4","target":"record","payload":{"canonical_record":{"source":{"id":"1701.03362","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-01-11T05:38:50Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"7a591dab88a01af76a02867e69a6e334be00bde0a354c41688e8696740cacf56","abstract_canon_sha256":"8a35d9d3664e4051c9f3d661bf52b50e84a3b321538ec9403463c1fd5d0903b5"},"schema_version":"1.0"},"canonical_sha256":"17ec5cd4eb93d9c1196adf9fd177bc5f0247d2690d39792d2c7ad899cfa7ce8d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:43:35.329605Z","signature_b64":"4IHyaSzC19ub8UUuS48zlrmSnc9wz1M9mI/JlZ+5q+o7QiP8SCtuH6Lb3jUOcZZkXUg7rQYyZ8yomsiCXzToAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"17ec5cd4eb93d9c1196adf9fd177bc5f0247d2690d39792d2c7ad899cfa7ce8d","last_reissued_at":"2026-05-18T00:43:35.329195Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:43:35.329195Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.03362","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":"2026-05-18T00:43:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0p5Yk7Y4lBUwr6wUm9uxgr6vSHj39D3U8mMJ1r9CVfmbMfO+Ue3IKhh0ORZh9Yw5ioZ5MH0vdCko2UI7F3QtAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:46:04.598010Z"},"content_sha256":"e66e72cbe2e8654c2c1d2fdb8c60d2735877a36f02cb8649934b341d288dc6e1","schema_version":"1.0","event_id":"sha256:e66e72cbe2e8654c2c1d2fdb8c60d2735877a36f02cb8649934b341d288dc6e1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:C7WFZVHLSPM4CGLK36P5C554L4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A new pressure-parametrization unified dark fluid model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Deng Wang, Xin-he Meng, Yang-Jie Yan","submitted_at":"2017-01-11T05:38:50Z","abstract_excerpt":"We propose a new pressure-parametrization model to explain the accelerated expansion of the late-time Universe by considering the dark contents (dark matter and dark energy) as a unified dark fluid. To realize this model more physically, we reconstruct it with the quintessence and phantom scalar fields, respectively. We use the recent cosmological data to constrain this model, distinguish it from the standard cosmological model and find that the value of the Hubble constant $H_0=68.34^{+0.53}_{-0.92}$ supports the global measurement by the Planck satellite at the $1\\sigma$ confidence level."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.03362","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":"2026-05-18T00:43:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U7GDxbn/IhmyylNvZ9gxCpW/uOkOhYEtAlEiAl+rLczkrEO5yh3UsTF0TcllYSXD6HEW9KM28G6U42cq6ejqBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:46:04.598739Z"},"content_sha256":"01292ec7eecfa038047ab5ff48f06d4225c4f29e183ce32539c3c7a9eecb0b5f","schema_version":"1.0","event_id":"sha256:01292ec7eecfa038047ab5ff48f06d4225c4f29e183ce32539c3c7a9eecb0b5f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C7WFZVHLSPM4CGLK36P5C554L4/bundle.json","state_url":"https://pith.science/pith/C7WFZVHLSPM4CGLK36P5C554L4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C7WFZVHLSPM4CGLK36P5C554L4/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":"2026-05-25T13:46:04Z","links":{"resolver":"https://pith.science/pith/C7WFZVHLSPM4CGLK36P5C554L4","bundle":"https://pith.science/pith/C7WFZVHLSPM4CGLK36P5C554L4/bundle.json","state":"https://pith.science/pith/C7WFZVHLSPM4CGLK36P5C554L4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C7WFZVHLSPM4CGLK36P5C554L4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:C7WFZVHLSPM4CGLK36P5C554L4","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":"8a35d9d3664e4051c9f3d661bf52b50e84a3b321538ec9403463c1fd5d0903b5","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-01-11T05:38:50Z","title_canon_sha256":"7a591dab88a01af76a02867e69a6e334be00bde0a354c41688e8696740cacf56"},"schema_version":"1.0","source":{"id":"1701.03362","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.03362","created_at":"2026-05-18T00:43:35Z"},{"alias_kind":"arxiv_version","alias_value":"1701.03362v1","created_at":"2026-05-18T00:43:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.03362","created_at":"2026-05-18T00:43:35Z"},{"alias_kind":"pith_short_12","alias_value":"C7WFZVHLSPM4","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"C7WFZVHLSPM4CGLK","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"C7WFZVHL","created_at":"2026-05-18T12:31:10Z"}],"graph_snapshots":[{"event_id":"sha256:01292ec7eecfa038047ab5ff48f06d4225c4f29e183ce32539c3c7a9eecb0b5f","target":"graph","created_at":"2026-05-18T00:43:35Z","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 propose a new pressure-parametrization model to explain the accelerated expansion of the late-time Universe by considering the dark contents (dark matter and dark energy) as a unified dark fluid. To realize this model more physically, we reconstruct it with the quintessence and phantom scalar fields, respectively. We use the recent cosmological data to constrain this model, distinguish it from the standard cosmological model and find that the value of the Hubble constant $H_0=68.34^{+0.53}_{-0.92}$ supports the global measurement by the Planck satellite at the $1\\sigma$ confidence level.","authors_text":"Deng Wang, Xin-he Meng, Yang-Jie Yan","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-01-11T05:38:50Z","title":"A new pressure-parametrization unified dark fluid model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.03362","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:e66e72cbe2e8654c2c1d2fdb8c60d2735877a36f02cb8649934b341d288dc6e1","target":"record","created_at":"2026-05-18T00:43:35Z","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":"8a35d9d3664e4051c9f3d661bf52b50e84a3b321538ec9403463c1fd5d0903b5","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-01-11T05:38:50Z","title_canon_sha256":"7a591dab88a01af76a02867e69a6e334be00bde0a354c41688e8696740cacf56"},"schema_version":"1.0","source":{"id":"1701.03362","kind":"arxiv","version":1}},"canonical_sha256":"17ec5cd4eb93d9c1196adf9fd177bc5f0247d2690d39792d2c7ad899cfa7ce8d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"17ec5cd4eb93d9c1196adf9fd177bc5f0247d2690d39792d2c7ad899cfa7ce8d","first_computed_at":"2026-05-18T00:43:35.329195Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:43:35.329195Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4IHyaSzC19ub8UUuS48zlrmSnc9wz1M9mI/JlZ+5q+o7QiP8SCtuH6Lb3jUOcZZkXUg7rQYyZ8yomsiCXzToAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:43:35.329605Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.03362","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e66e72cbe2e8654c2c1d2fdb8c60d2735877a36f02cb8649934b341d288dc6e1","sha256:01292ec7eecfa038047ab5ff48f06d4225c4f29e183ce32539c3c7a9eecb0b5f"],"state_sha256":"5ffaad836efb39092031b08fd904805cecd993558e6e2f88db19361a6c9cdacb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6efTMbB/VFHm1axuOINb1j1Zra505qIDBcz3wQuwFJBjGIBROvLpgvMFRqhdRCvHS23Hs9MbM01Lig2rJryYBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T13:46:04.602533Z","bundle_sha256":"9ee6437ff2c77366d0092a95b599ea2b6c361e7cc0f3835b5f44042577d47c7b"}}