{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:7UKGOLGLF6QTFZLJWSVQETVLFB","short_pith_number":"pith:7UKGOLGL","canonical_record":{"source":{"id":"2111.13482","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-11-26T12:56:40Z","cross_cats_sorted":[],"title_canon_sha256":"902102cfe5b484edf1ea02737f7bb6cc9870c9eeaf16eec407fe7599f1c474a2","abstract_canon_sha256":"493428289b84ceb7e94df63fdfa867848621b47fa87ec7fc7f46a8588a3dd19a"},"schema_version":"1.0"},"canonical_sha256":"fd14672ccb2fa132e569b4ab024eab286f66b5465c40bd49dbac4a20e38a340e","source":{"kind":"arxiv","id":"2111.13482","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.13482","created_at":"2026-07-05T04:04:25Z"},{"alias_kind":"arxiv_version","alias_value":"2111.13482v1","created_at":"2026-07-05T04:04:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.13482","created_at":"2026-07-05T04:04:25Z"},{"alias_kind":"pith_short_12","alias_value":"7UKGOLGLF6QT","created_at":"2026-07-05T04:04:25Z"},{"alias_kind":"pith_short_16","alias_value":"7UKGOLGLF6QTFZLJ","created_at":"2026-07-05T04:04:25Z"},{"alias_kind":"pith_short_8","alias_value":"7UKGOLGL","created_at":"2026-07-05T04:04:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:7UKGOLGLF6QTFZLJWSVQETVLFB","target":"record","payload":{"canonical_record":{"source":{"id":"2111.13482","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-11-26T12:56:40Z","cross_cats_sorted":[],"title_canon_sha256":"902102cfe5b484edf1ea02737f7bb6cc9870c9eeaf16eec407fe7599f1c474a2","abstract_canon_sha256":"493428289b84ceb7e94df63fdfa867848621b47fa87ec7fc7f46a8588a3dd19a"},"schema_version":"1.0"},"canonical_sha256":"fd14672ccb2fa132e569b4ab024eab286f66b5465c40bd49dbac4a20e38a340e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:04:25.748018Z","signature_b64":"vi405l+5ztFmftdeplzLKd2+3AAwPxNQ4rSGFxXoAoij3YnoitMpK1Bb3z4J+rDO65Ggy1/jNrtpsRYYOTcMAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd14672ccb2fa132e569b4ab024eab286f66b5465c40bd49dbac4a20e38a340e","last_reissued_at":"2026-07-05T04:04:25.747541Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:04:25.747541Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.13482","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":"2026-07-05T04:04:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EVG2ZQw+B5zHh1vpbBEpNQMu0aBiRObev9AcGevbqnm/kLe4qqagNpYH/Cl2Ht2qdGUc5J4e2uXQsFGCrgrfDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T00:44:46.148574Z"},"content_sha256":"3ef36569be2faf4c00c32654a55af71a9d6302a12b6136a7a70b90f0bb85abee","schema_version":"1.0","event_id":"sha256:3ef36569be2faf4c00c32654a55af71a9d6302a12b6136a7a70b90f0bb85abee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:7UKGOLGLF6QTFZLJWSVQETVLFB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A comparative analysis of pulse time-of-arrival creation methods","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. G. Lyne, B. W. Stappers, C. Tiburzi, D. J. Champion, E. Graikou, G. M. Shaifullah, G. Theureau, H. Hu, I. Cognard, J. P. W. Verbiest, J. Wang, L. Guillemot, M. B. Mickaliger, M. Gaikwad, Michael J. Keith, Michael Kramer, R. Karuppusamy, Y. Liu","submitted_at":"2021-11-26T12:56:40Z","abstract_excerpt":"Extracting precise pulse times of arrival (TOAs) and their uncertainties is the first and most fundamental step in high-precision pulsar timing. In the classical method, TOAs are derived from total intensity pulse profiles of pulsars via cross-correlation with an idealised `1D' template of that profile. While a number of results have been presented in the literature relying on the ever increasing sensitivity of such pulsar timing experiments, there is no consensus on the most reliable methods for TOA creation and, more importantly, the associated TOA uncertainties for each scheme.\n  In this ar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.13482","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/2111.13482/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":"2026-07-05T04:04:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CdktUqMKOx5ngImnQaNVLErq3lHw/60ViaK3oDUoTrDdR2c9+o3KU4UUxxT5Rm3O6nB81lpJl6TypvOAJhN5Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T00:44:46.148958Z"},"content_sha256":"a25fe816f25bb3f71b1a576b2ae3858bba93b6355290f4ddfb476aa17dfc0b57","schema_version":"1.0","event_id":"sha256:a25fe816f25bb3f71b1a576b2ae3858bba93b6355290f4ddfb476aa17dfc0b57"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7UKGOLGLF6QTFZLJWSVQETVLFB/bundle.json","state_url":"https://pith.science/pith/7UKGOLGLF6QTFZLJWSVQETVLFB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7UKGOLGLF6QTFZLJWSVQETVLFB/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":"2026-08-18T00:44:46Z","links":{"resolver":"https://pith.science/pith/7UKGOLGLF6QTFZLJWSVQETVLFB","bundle":"https://pith.science/pith/7UKGOLGLF6QTFZLJWSVQETVLFB/bundle.json","state":"https://pith.science/pith/7UKGOLGLF6QTFZLJWSVQETVLFB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7UKGOLGLF6QTFZLJWSVQETVLFB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:7UKGOLGLF6QTFZLJWSVQETVLFB","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":"493428289b84ceb7e94df63fdfa867848621b47fa87ec7fc7f46a8588a3dd19a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-11-26T12:56:40Z","title_canon_sha256":"902102cfe5b484edf1ea02737f7bb6cc9870c9eeaf16eec407fe7599f1c474a2"},"schema_version":"1.0","source":{"id":"2111.13482","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.13482","created_at":"2026-07-05T04:04:25Z"},{"alias_kind":"arxiv_version","alias_value":"2111.13482v1","created_at":"2026-07-05T04:04:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.13482","created_at":"2026-07-05T04:04:25Z"},{"alias_kind":"pith_short_12","alias_value":"7UKGOLGLF6QT","created_at":"2026-07-05T04:04:25Z"},{"alias_kind":"pith_short_16","alias_value":"7UKGOLGLF6QTFZLJ","created_at":"2026-07-05T04:04:25Z"},{"alias_kind":"pith_short_8","alias_value":"7UKGOLGL","created_at":"2026-07-05T04:04:25Z"}],"graph_snapshots":[{"event_id":"sha256:a25fe816f25bb3f71b1a576b2ae3858bba93b6355290f4ddfb476aa17dfc0b57","target":"graph","created_at":"2026-07-05T04:04:25Z","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/2111.13482/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Extracting precise pulse times of arrival (TOAs) and their uncertainties is the first and most fundamental step in high-precision pulsar timing. In the classical method, TOAs are derived from total intensity pulse profiles of pulsars via cross-correlation with an idealised `1D' template of that profile. While a number of results have been presented in the literature relying on the ever increasing sensitivity of such pulsar timing experiments, there is no consensus on the most reliable methods for TOA creation and, more importantly, the associated TOA uncertainties for each scheme.\n  In this ar","authors_text":"A. G. Lyne, B. W. Stappers, C. Tiburzi, D. J. Champion, E. Graikou, G. M. Shaifullah, G. Theureau, H. Hu, I. Cognard, J. P. W. Verbiest, J. Wang, L. Guillemot, M. B. Mickaliger, M. Gaikwad, Michael J. Keith, Michael Kramer, R. Karuppusamy, Y. Liu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-11-26T12:56:40Z","title":"A comparative analysis of pulse time-of-arrival creation methods"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.13482","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":"sha256:3ef36569be2faf4c00c32654a55af71a9d6302a12b6136a7a70b90f0bb85abee","target":"record","created_at":"2026-07-05T04:04:25Z","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":"493428289b84ceb7e94df63fdfa867848621b47fa87ec7fc7f46a8588a3dd19a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-11-26T12:56:40Z","title_canon_sha256":"902102cfe5b484edf1ea02737f7bb6cc9870c9eeaf16eec407fe7599f1c474a2"},"schema_version":"1.0","source":{"id":"2111.13482","kind":"arxiv","version":1}},"canonical_sha256":"fd14672ccb2fa132e569b4ab024eab286f66b5465c40bd49dbac4a20e38a340e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd14672ccb2fa132e569b4ab024eab286f66b5465c40bd49dbac4a20e38a340e","first_computed_at":"2026-07-05T04:04:25.747541Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:04:25.747541Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vi405l+5ztFmftdeplzLKd2+3AAwPxNQ4rSGFxXoAoij3YnoitMpK1Bb3z4J+rDO65Ggy1/jNrtpsRYYOTcMAA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:04:25.748018Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.13482","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3ef36569be2faf4c00c32654a55af71a9d6302a12b6136a7a70b90f0bb85abee","sha256:a25fe816f25bb3f71b1a576b2ae3858bba93b6355290f4ddfb476aa17dfc0b57"],"state_sha256":"a3e427e6fa09845e13290a6ce9c2551e2f734bdad35a78a3677ad0f45c50548d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TXBzQHhGWIFSNVz/f9lMJa6sBDAljvn96B/n4xyFQbwofb++TEI+WfFwjtocoPvuBvZZFYsKWQC+A1fjMhGxCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T00:44:46.151885Z","bundle_sha256":"1470b0d645601d02a017e6702121f39e822cfa4585127c1f80cc084faf5af0bb"}}