{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:QZ7QISCNIK7P7GWPJOLIOZVBYF","short_pith_number":"pith:QZ7QISCN","canonical_record":{"source":{"id":"1804.03649","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-10T17:51:31Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"b45fc9c559c7e35587b26d44ee2d87766bae6cf50b635e873007a6c518bbc964","abstract_canon_sha256":"85ea0aa31575d8ba601f8a6657b660cb0be482ddca7f24b9858a92e582ece2a1"},"schema_version":"1.0"},"canonical_sha256":"867f04484d42beff9acf4b968766a1c16d453e4c471d87de55bf37bd72ecf858","source":{"kind":"arxiv","id":"1804.03649","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.03649","created_at":"2026-05-18T00:17:03Z"},{"alias_kind":"arxiv_version","alias_value":"1804.03649v1","created_at":"2026-05-18T00:17:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.03649","created_at":"2026-05-18T00:17:03Z"},{"alias_kind":"pith_short_12","alias_value":"QZ7QISCNIK7P","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"QZ7QISCNIK7P7GWP","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"QZ7QISCN","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:QZ7QISCNIK7P7GWPJOLIOZVBYF","target":"record","payload":{"canonical_record":{"source":{"id":"1804.03649","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-10T17:51:31Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"b45fc9c559c7e35587b26d44ee2d87766bae6cf50b635e873007a6c518bbc964","abstract_canon_sha256":"85ea0aa31575d8ba601f8a6657b660cb0be482ddca7f24b9858a92e582ece2a1"},"schema_version":"1.0"},"canonical_sha256":"867f04484d42beff9acf4b968766a1c16d453e4c471d87de55bf37bd72ecf858","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:17:03.408079Z","signature_b64":"9Ov9DltpBqGyJIj/p5r+tyn5g7uBLnJW9DwYqFD2AtYWTDiuo2jZAXIUTrP+eqgesikFR/uMF+BlcdxHWVsNCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"867f04484d42beff9acf4b968766a1c16d453e4c471d87de55bf37bd72ecf858","last_reissued_at":"2026-05-18T00:17:03.407367Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:17:03.407367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.03649","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":"2026-05-18T00:17:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GVp4e48ZwIiCWaNHIcjvfjVSAnfpOoEzjW8jdcB19JhwIfnAzacejmjMFmuN+WPijt1cVchhI+3sufNJXtmBCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T01:11:52.887204Z"},"content_sha256":"c2961fa8cf841bbb00dbbb6d1c6b2bc1295396a441e504d5f400545c4fb72ee8","schema_version":"1.0","event_id":"sha256:c2961fa8cf841bbb00dbbb6d1c6b2bc1295396a441e504d5f400545c4fb72ee8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:QZ7QISCNIK7P7GWPJOLIOZVBYF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmic acceleration in non-flat $f(T)$ cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"gr-qc","authors_text":"Arvin Ravanpak, Orlando Luongo, Richard Pincak, Salvatore Capozziello","submitted_at":"2018-04-10T17:51:31Z","abstract_excerpt":"We study $f(T)$ cosmological models inserting a non-vanishing spatial curvature and discuss its consequences on cosmological dynamics. To figure this out, a polynomial $f(T)$ model and a double torsion model are considered. We first analyze those models with cosmic data, employing the recent surveys of Union 2.1, baryonic acoustic oscillation and cosmic microwave background measurements. We then emphasize that the two popular $f(T)$ models enable the crossing of the phantom divide line due to dark torsion. Afterwards, we compute numerical bounds up to 3-$\\sigma$ confidence level, emphasizing t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.03649","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":"2026-05-18T00:17:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AlXXOIjxFMQXtbMCYvUJV9YGCIwVgNdvvoPk2bVwexqxQxgQvcgEilyCRaPMOShWav5Fc+uV65xIv6dbKZ7+DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T01:11:52.887930Z"},"content_sha256":"fd92cab9273e57e281eb363d2fac37950aecc4ce3fd7b6c006048036023a74fc","schema_version":"1.0","event_id":"sha256:fd92cab9273e57e281eb363d2fac37950aecc4ce3fd7b6c006048036023a74fc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QZ7QISCNIK7P7GWPJOLIOZVBYF/bundle.json","state_url":"https://pith.science/pith/QZ7QISCNIK7P7GWPJOLIOZVBYF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QZ7QISCNIK7P7GWPJOLIOZVBYF/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":"2026-05-25T01:11:52Z","links":{"resolver":"https://pith.science/pith/QZ7QISCNIK7P7GWPJOLIOZVBYF","bundle":"https://pith.science/pith/QZ7QISCNIK7P7GWPJOLIOZVBYF/bundle.json","state":"https://pith.science/pith/QZ7QISCNIK7P7GWPJOLIOZVBYF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QZ7QISCNIK7P7GWPJOLIOZVBYF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QZ7QISCNIK7P7GWPJOLIOZVBYF","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":"85ea0aa31575d8ba601f8a6657b660cb0be482ddca7f24b9858a92e582ece2a1","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-10T17:51:31Z","title_canon_sha256":"b45fc9c559c7e35587b26d44ee2d87766bae6cf50b635e873007a6c518bbc964"},"schema_version":"1.0","source":{"id":"1804.03649","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.03649","created_at":"2026-05-18T00:17:03Z"},{"alias_kind":"arxiv_version","alias_value":"1804.03649v1","created_at":"2026-05-18T00:17:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.03649","created_at":"2026-05-18T00:17:03Z"},{"alias_kind":"pith_short_12","alias_value":"QZ7QISCNIK7P","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"QZ7QISCNIK7P7GWP","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"QZ7QISCN","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:fd92cab9273e57e281eb363d2fac37950aecc4ce3fd7b6c006048036023a74fc","target":"graph","created_at":"2026-05-18T00:17:03Z","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 $f(T)$ cosmological models inserting a non-vanishing spatial curvature and discuss its consequences on cosmological dynamics. To figure this out, a polynomial $f(T)$ model and a double torsion model are considered. We first analyze those models with cosmic data, employing the recent surveys of Union 2.1, baryonic acoustic oscillation and cosmic microwave background measurements. We then emphasize that the two popular $f(T)$ models enable the crossing of the phantom divide line due to dark torsion. Afterwards, we compute numerical bounds up to 3-$\\sigma$ confidence level, emphasizing t","authors_text":"Arvin Ravanpak, Orlando Luongo, Richard Pincak, Salvatore Capozziello","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-10T17:51:31Z","title":"Cosmic acceleration in non-flat $f(T)$ cosmology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.03649","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:c2961fa8cf841bbb00dbbb6d1c6b2bc1295396a441e504d5f400545c4fb72ee8","target":"record","created_at":"2026-05-18T00:17:03Z","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":"85ea0aa31575d8ba601f8a6657b660cb0be482ddca7f24b9858a92e582ece2a1","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-10T17:51:31Z","title_canon_sha256":"b45fc9c559c7e35587b26d44ee2d87766bae6cf50b635e873007a6c518bbc964"},"schema_version":"1.0","source":{"id":"1804.03649","kind":"arxiv","version":1}},"canonical_sha256":"867f04484d42beff9acf4b968766a1c16d453e4c471d87de55bf37bd72ecf858","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"867f04484d42beff9acf4b968766a1c16d453e4c471d87de55bf37bd72ecf858","first_computed_at":"2026-05-18T00:17:03.407367Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:17:03.407367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Ov9DltpBqGyJIj/p5r+tyn5g7uBLnJW9DwYqFD2AtYWTDiuo2jZAXIUTrP+eqgesikFR/uMF+BlcdxHWVsNCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:17:03.408079Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.03649","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c2961fa8cf841bbb00dbbb6d1c6b2bc1295396a441e504d5f400545c4fb72ee8","sha256:fd92cab9273e57e281eb363d2fac37950aecc4ce3fd7b6c006048036023a74fc"],"state_sha256":"7710abc4cededbf1249c44b49ca9dfd51c50b6e2f74b16deb404079c6ee88246"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3v5SsPXvau1786K7myK1k6GbhF8sRi3euaSnwLI/hOURWd+6SybyhOoiCXsPG32KZ6FM+3gJB0OPjY9dlUDMAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T01:11:52.891156Z","bundle_sha256":"cf7efc9d441ded8ab5e2b80dfb3bd6706d659cb72b76883f337fb1e8d81b1a8b"}}