{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:N4OCY33OAQJTKQAC2QJOCZCVZL","short_pith_number":"pith:N4OCY33O","canonical_record":{"source":{"id":"2306.16224","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-06-28T13:51:12Z","cross_cats_sorted":["astro-ph.GA","astro-ph.IM","gr-qc"],"title_canon_sha256":"fc98fda608053dc1f73d2ff9359bdc73814e0f291c167539a1c56bc412654b74","abstract_canon_sha256":"d280e3b61427a424d7c29f04816fd1cf56554e31af1d7b2dc20a57f44f784eb9"},"schema_version":"1.0"},"canonical_sha256":"6f1c2c6f6e0413354002d412e16455cacda74cce4c9eae27044bd28f22644342","source":{"kind":"arxiv","id":"2306.16224","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.16224","created_at":"2026-07-05T06:25:52Z"},{"alias_kind":"arxiv_version","alias_value":"2306.16224v1","created_at":"2026-07-05T06:25:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.16224","created_at":"2026-07-05T06:25:52Z"},{"alias_kind":"pith_short_12","alias_value":"N4OCY33OAQJT","created_at":"2026-07-05T06:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"N4OCY33OAQJTKQAC","created_at":"2026-07-05T06:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"N4OCY33O","created_at":"2026-07-05T06:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:N4OCY33OAQJTKQAC2QJOCZCVZL","target":"record","payload":{"canonical_record":{"source":{"id":"2306.16224","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-06-28T13:51:12Z","cross_cats_sorted":["astro-ph.GA","astro-ph.IM","gr-qc"],"title_canon_sha256":"fc98fda608053dc1f73d2ff9359bdc73814e0f291c167539a1c56bc412654b74","abstract_canon_sha256":"d280e3b61427a424d7c29f04816fd1cf56554e31af1d7b2dc20a57f44f784eb9"},"schema_version":"1.0"},"canonical_sha256":"6f1c2c6f6e0413354002d412e16455cacda74cce4c9eae27044bd28f22644342","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:25:52.430368Z","signature_b64":"+QCYJXvvgO4SgeMNkCKqxVwL0xKV3l5a2sAMeaYzuTZ+jRI84us75J2PkwupQt4tNn8kZoKVgC3N13K8RzRZCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6f1c2c6f6e0413354002d412e16455cacda74cce4c9eae27044bd28f22644342","last_reissued_at":"2026-07-05T06:25:52.429835Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:25:52.429835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2306.16224","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":"2026-07-05T06:25:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PKjRyiJcHHXBg2gKWiwki09c0lzR/qgH+ZQi9nH2uFRivNVQKdyrpW7FB0hAa06NgrkgHMvjzdYxj/LzGf8XCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T01:03:23.826356Z"},"content_sha256":"11cce1259401d129843c9fa3381ed54ac4aec5b3ebef59f6676db6c7785998dc","schema_version":"1.0","event_id":"sha256:11cce1259401d129843c9fa3381ed54ac4aec5b3ebef59f6676db6c7785998dc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:N4OCY33OAQJTKQAC2QJOCZCVZL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The second data release from the European Pulsar Timing Array I. The dataset and timing analysis","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.IM","gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"A. Berthereau, A. Chalumeau, A. Franchini, A. G. Lyne, A. Jessner, A. Parthasarathy, A. Petiteau, A. Possenti, A.-S. Bak Nielsen, A. Sesana, A. Vecchio, B. B. P. Perera, B. Goncharov, B. W. Stappers, C. G. Bassa, C. Tiburzi, D. Izquierdo-Villalba, D. J. Champion, D. Perrodin, E. Bortolas, E. F. Keane, E. Graikou, E. van der Wateren, F. Iraci, G. Desvignes, G. H. Janssen, G. Shaifullah, G. Theureau, H. Hu, H. Quelquejay Leclere A. Samajdar, I. C. Nitu, I. Cognard, J. Antoniadis, J. Jang, J. Jawor, J.-M. Grie{\\ss}meier, J. P. W. Verbiest, J. R. Gair, J. Wang, J. W. McKee, K. J. Lee, K. Lackeos, K. Liu, L. Guillemot, L. Speri, L. Wang, M. A. Krishnakumar, M. B. Mickaliger, M. Bonetti, M. Burgay, M. Falxa, M. J. Keith, M. Kramer, N. K. Porayko, P. R. Brook, R. A. Main, R. D. Ferdman, R. Karuppusamy, R. N. Caballero, R. Spiewak, S. A. Sanidas, S. Babak, S. Chanlaridis, S. Chen, S. C. Susarla, V. Venkatraman Krishnan, Y. J. Guo, Y. Liu, Z. Wu","submitted_at":"2023-06-28T13:51:12Z","abstract_excerpt":"Pulsar timing arrays offer a probe of the low-frequency gravitational wave spectrum (1 - 100 nanohertz), which is intimately connected to a number of markers that can uniquely trace the formation and evolution of the Universe. We present the dataset and the results of the timing analysis from the second data release of the European Pulsar Timing Array (EPTA). The dataset contains high-precision pulsar timing data from 25 millisecond pulsars collected with the five largest radio telescopes in Europe, as well as the Large European Array for Pulsars. The dataset forms the foundation for the searc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.16224","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2306.16224/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T06:25:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9J3PKRR9jCHyC7g0iqIkqaCBnOtKIUeGz+V2d9tlerLQ9QdeB9r+nF76z0PhB1SVCJ50hR6kOxqc7w5HKaoXAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T01:03:23.827020Z"},"content_sha256":"b9e20337720b12cb06ec59de4095daff5d1b072cdc54c7b52e7157933690b6ac","schema_version":"1.0","event_id":"sha256:b9e20337720b12cb06ec59de4095daff5d1b072cdc54c7b52e7157933690b6ac"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/N4OCY33OAQJTKQAC2QJOCZCVZL/bundle.json","state_url":"https://pith.science/pith/N4OCY33OAQJTKQAC2QJOCZCVZL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/N4OCY33OAQJTKQAC2QJOCZCVZL/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":"2026-07-13T01:03:23Z","links":{"resolver":"https://pith.science/pith/N4OCY33OAQJTKQAC2QJOCZCVZL","bundle":"https://pith.science/pith/N4OCY33OAQJTKQAC2QJOCZCVZL/bundle.json","state":"https://pith.science/pith/N4OCY33OAQJTKQAC2QJOCZCVZL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/N4OCY33OAQJTKQAC2QJOCZCVZL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:N4OCY33OAQJTKQAC2QJOCZCVZL","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":"d280e3b61427a424d7c29f04816fd1cf56554e31af1d7b2dc20a57f44f784eb9","cross_cats_sorted":["astro-ph.GA","astro-ph.IM","gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-06-28T13:51:12Z","title_canon_sha256":"fc98fda608053dc1f73d2ff9359bdc73814e0f291c167539a1c56bc412654b74"},"schema_version":"1.0","source":{"id":"2306.16224","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.16224","created_at":"2026-07-05T06:25:52Z"},{"alias_kind":"arxiv_version","alias_value":"2306.16224v1","created_at":"2026-07-05T06:25:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.16224","created_at":"2026-07-05T06:25:52Z"},{"alias_kind":"pith_short_12","alias_value":"N4OCY33OAQJT","created_at":"2026-07-05T06:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"N4OCY33OAQJTKQAC","created_at":"2026-07-05T06:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"N4OCY33O","created_at":"2026-07-05T06:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:b9e20337720b12cb06ec59de4095daff5d1b072cdc54c7b52e7157933690b6ac","target":"graph","created_at":"2026-07-05T06:25:52Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2306.16224/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Pulsar timing arrays offer a probe of the low-frequency gravitational wave spectrum (1 - 100 nanohertz), which is intimately connected to a number of markers that can uniquely trace the formation and evolution of the Universe. We present the dataset and the results of the timing analysis from the second data release of the European Pulsar Timing Array (EPTA). The dataset contains high-precision pulsar timing data from 25 millisecond pulsars collected with the five largest radio telescopes in Europe, as well as the Large European Array for Pulsars. The dataset forms the foundation for the searc","authors_text":"A. Berthereau, A. Chalumeau, A. Franchini, A. G. Lyne, A. Jessner, A. Parthasarathy, A. Petiteau, A. Possenti, A.-S. Bak Nielsen, A. Sesana, A. Vecchio, B. B. P. Perera, B. Goncharov, B. W. Stappers, C. G. Bassa, C. Tiburzi, D. Izquierdo-Villalba, D. J. Champion, D. Perrodin, E. Bortolas, E. F. Keane, E. Graikou, E. van der Wateren, F. Iraci, G. Desvignes, G. H. Janssen, G. Shaifullah, G. Theureau, H. Hu, H. Quelquejay Leclere A. Samajdar, I. C. Nitu, I. Cognard, J. Antoniadis, J. Jang, J. Jawor, J.-M. Grie{\\ss}meier, J. P. W. Verbiest, J. R. Gair, J. Wang, J. W. McKee, K. J. Lee, K. Lackeos, K. Liu, L. Guillemot, L. Speri, L. Wang, M. A. Krishnakumar, M. B. Mickaliger, M. Bonetti, M. Burgay, M. Falxa, M. J. Keith, M. Kramer, N. K. Porayko, P. R. Brook, R. A. Main, R. D. Ferdman, R. Karuppusamy, R. N. Caballero, R. Spiewak, S. A. Sanidas, S. Babak, S. Chanlaridis, S. Chen, S. C. Susarla, V. Venkatraman Krishnan, Y. J. Guo, Y. Liu, Z. Wu","cross_cats":["astro-ph.GA","astro-ph.IM","gr-qc"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-06-28T13:51:12Z","title":"The second data release from the European Pulsar Timing Array I. The dataset and timing analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.16224","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":"sha256:11cce1259401d129843c9fa3381ed54ac4aec5b3ebef59f6676db6c7785998dc","target":"record","created_at":"2026-07-05T06:25:52Z","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":"d280e3b61427a424d7c29f04816fd1cf56554e31af1d7b2dc20a57f44f784eb9","cross_cats_sorted":["astro-ph.GA","astro-ph.IM","gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-06-28T13:51:12Z","title_canon_sha256":"fc98fda608053dc1f73d2ff9359bdc73814e0f291c167539a1c56bc412654b74"},"schema_version":"1.0","source":{"id":"2306.16224","kind":"arxiv","version":1}},"canonical_sha256":"6f1c2c6f6e0413354002d412e16455cacda74cce4c9eae27044bd28f22644342","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f1c2c6f6e0413354002d412e16455cacda74cce4c9eae27044bd28f22644342","first_computed_at":"2026-07-05T06:25:52.429835Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:25:52.429835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+QCYJXvvgO4SgeMNkCKqxVwL0xKV3l5a2sAMeaYzuTZ+jRI84us75J2PkwupQt4tNn8kZoKVgC3N13K8RzRZCg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:25:52.430368Z","signed_message":"canonical_sha256_bytes"},"source_id":"2306.16224","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:11cce1259401d129843c9fa3381ed54ac4aec5b3ebef59f6676db6c7785998dc","sha256:b9e20337720b12cb06ec59de4095daff5d1b072cdc54c7b52e7157933690b6ac"],"state_sha256":"5216317d804b83a7c283f7ca4940c928b8279eef81f653d4f7234d3b5b30f02a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dsjNiJohI74PkIzCie0TBz7tazjO/0l2gvZjAKBPcrs7ALRXlzuTr19mQN1IrShn/E0Mams/5aHE3BkZW9UTAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-13T01:03:23.830690Z","bundle_sha256":"36ba44b640acc2e5c60f2e9e60dea7b99339d4412ccdedf092eee590f70423e8"}}