{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:LWVRQJVEQFAWVZNEUMIWEQUZ6H","short_pith_number":"pith:LWVRQJVE","canonical_record":{"source":{"id":"1103.0518","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-03-02T19:16:48Z","cross_cats_sorted":["astro-ph.IM","gr-qc"],"title_canon_sha256":"d986b8886c457a265cb9626ce2c21f2c129a0461107ebfde66448338c66d37a6","abstract_canon_sha256":"ff9c4dca9f7a99a8959acb6b88b4d578cadaeefa50938764bcc5e12f992944b7"},"schema_version":"1.0"},"canonical_sha256":"5dab1826a481416ae5a4a311624299f1e1bb193bf31b46d55dd17cb92b30f196","source":{"kind":"arxiv","id":"1103.0518","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.0518","created_at":"2026-05-18T02:03:00Z"},{"alias_kind":"arxiv_version","alias_value":"1103.0518v1","created_at":"2026-05-18T02:03:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.0518","created_at":"2026-05-18T02:03:00Z"},{"alias_kind":"pith_short_12","alias_value":"LWVRQJVEQFAW","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_16","alias_value":"LWVRQJVEQFAWVZNE","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_8","alias_value":"LWVRQJVE","created_at":"2026-05-18T12:26:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:LWVRQJVEQFAWVZNEUMIWEQUZ6H","target":"record","payload":{"canonical_record":{"source":{"id":"1103.0518","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-03-02T19:16:48Z","cross_cats_sorted":["astro-ph.IM","gr-qc"],"title_canon_sha256":"d986b8886c457a265cb9626ce2c21f2c129a0461107ebfde66448338c66d37a6","abstract_canon_sha256":"ff9c4dca9f7a99a8959acb6b88b4d578cadaeefa50938764bcc5e12f992944b7"},"schema_version":"1.0"},"canonical_sha256":"5dab1826a481416ae5a4a311624299f1e1bb193bf31b46d55dd17cb92b30f196","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:00.836729Z","signature_b64":"vFuYsweAspDBrp0YwZdON0XtlFnWiLJ3UQINccowQTLatq6IZnGDCoKWfO7uR3NvrN3wS0SGaUcW1+0plgP7Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5dab1826a481416ae5a4a311624299f1e1bb193bf31b46d55dd17cb92b30f196","last_reissued_at":"2026-05-18T02:03:00.835969Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:00.835969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1103.0518","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":"2026-05-18T02:03:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oxYiuQz8Rl52hrGekQAvnrS9GYkYl+Pxl5TMV3TqHf2+uvjGrSOh7vXSXZOi+tSWZoWVGMwXMWWtYTY2+hlJCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:41:07.199599Z"},"content_sha256":"021f7935c153013a6d87fa08ea8aff5beab1369107730f06e229d6b3d95bf143","schema_version":"1.0","event_id":"sha256:021f7935c153013a6d87fa08ea8aff5beab1369107730f06e229d6b3d95bf143"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:LWVRQJVEQFAWVZNEUMIWEQUZ6H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Bayesian parameter estimation approach to pulsar time-of-arrival analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"A. Lommen, C. Messenger, P. Demorest, S. Ransom","submitted_at":"2011-03-02T19:16:48Z","abstract_excerpt":"The increasing sensitivities of pulsar timing arrays to ultra-low frequency (nHz) gravitational waves promises to achieve direct gravitational wave detection within the next 5-10 years. While there are many parallel efforts being made in the improvement of telescope sensitivity, the detection of stable millisecond pulsars and the improvement of the timing software, there are reasons to believe that the methods used to accurately determine the time-of-arrival (TOA) of pulses from radio pulsars can be improved upon. More specifically, the determination of the uncertainties on these TOAs, which s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.0518","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":"2026-05-18T02:03:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fwkC95sAsWZvT1pvcN0JWI+MB8J+7VeRfdifMhQXh55tl1yl9MEOHJizOH9dmDBl8uJDH9P4yF0/9RozsNuODQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:41:07.199970Z"},"content_sha256":"df36a7545926b5d13cf773734bdc3b98b712869c429accb76895307bbd8049ef","schema_version":"1.0","event_id":"sha256:df36a7545926b5d13cf773734bdc3b98b712869c429accb76895307bbd8049ef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LWVRQJVEQFAWVZNEUMIWEQUZ6H/bundle.json","state_url":"https://pith.science/pith/LWVRQJVEQFAWVZNEUMIWEQUZ6H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LWVRQJVEQFAWVZNEUMIWEQUZ6H/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":"2026-05-29T15:41:07Z","links":{"resolver":"https://pith.science/pith/LWVRQJVEQFAWVZNEUMIWEQUZ6H","bundle":"https://pith.science/pith/LWVRQJVEQFAWVZNEUMIWEQUZ6H/bundle.json","state":"https://pith.science/pith/LWVRQJVEQFAWVZNEUMIWEQUZ6H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LWVRQJVEQFAWVZNEUMIWEQUZ6H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:LWVRQJVEQFAWVZNEUMIWEQUZ6H","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":"ff9c4dca9f7a99a8959acb6b88b4d578cadaeefa50938764bcc5e12f992944b7","cross_cats_sorted":["astro-ph.IM","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-03-02T19:16:48Z","title_canon_sha256":"d986b8886c457a265cb9626ce2c21f2c129a0461107ebfde66448338c66d37a6"},"schema_version":"1.0","source":{"id":"1103.0518","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.0518","created_at":"2026-05-18T02:03:00Z"},{"alias_kind":"arxiv_version","alias_value":"1103.0518v1","created_at":"2026-05-18T02:03:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.0518","created_at":"2026-05-18T02:03:00Z"},{"alias_kind":"pith_short_12","alias_value":"LWVRQJVEQFAW","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_16","alias_value":"LWVRQJVEQFAWVZNE","created_at":"2026-05-18T12:26:34Z"},{"alias_kind":"pith_short_8","alias_value":"LWVRQJVE","created_at":"2026-05-18T12:26:34Z"}],"graph_snapshots":[{"event_id":"sha256:df36a7545926b5d13cf773734bdc3b98b712869c429accb76895307bbd8049ef","target":"graph","created_at":"2026-05-18T02:03:00Z","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":"The increasing sensitivities of pulsar timing arrays to ultra-low frequency (nHz) gravitational waves promises to achieve direct gravitational wave detection within the next 5-10 years. While there are many parallel efforts being made in the improvement of telescope sensitivity, the detection of stable millisecond pulsars and the improvement of the timing software, there are reasons to believe that the methods used to accurately determine the time-of-arrival (TOA) of pulses from radio pulsars can be improved upon. More specifically, the determination of the uncertainties on these TOAs, which s","authors_text":"A. Lommen, C. Messenger, P. Demorest, S. Ransom","cross_cats":["astro-ph.IM","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-03-02T19:16:48Z","title":"A Bayesian parameter estimation approach to pulsar time-of-arrival analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.0518","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":"sha256:021f7935c153013a6d87fa08ea8aff5beab1369107730f06e229d6b3d95bf143","target":"record","created_at":"2026-05-18T02:03:00Z","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":"ff9c4dca9f7a99a8959acb6b88b4d578cadaeefa50938764bcc5e12f992944b7","cross_cats_sorted":["astro-ph.IM","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-03-02T19:16:48Z","title_canon_sha256":"d986b8886c457a265cb9626ce2c21f2c129a0461107ebfde66448338c66d37a6"},"schema_version":"1.0","source":{"id":"1103.0518","kind":"arxiv","version":1}},"canonical_sha256":"5dab1826a481416ae5a4a311624299f1e1bb193bf31b46d55dd17cb92b30f196","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5dab1826a481416ae5a4a311624299f1e1bb193bf31b46d55dd17cb92b30f196","first_computed_at":"2026-05-18T02:03:00.835969Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:00.835969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vFuYsweAspDBrp0YwZdON0XtlFnWiLJ3UQINccowQTLatq6IZnGDCoKWfO7uR3NvrN3wS0SGaUcW1+0plgP7Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:00.836729Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.0518","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:021f7935c153013a6d87fa08ea8aff5beab1369107730f06e229d6b3d95bf143","sha256:df36a7545926b5d13cf773734bdc3b98b712869c429accb76895307bbd8049ef"],"state_sha256":"d57f8cef9b63e898df8637cc52a44d1513c84ade1009206bb8d9e4e3ba7a287a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BZb2VJ9OyK6pw31IjlSZfcVsgCSm8D/Av+uVOhmm2gdRHm14h5VFWs5pmROksjoSvpd07D0tYTTVPmMtOvMRDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T15:41:07.203301Z","bundle_sha256":"7951065f0f5894704a974990c5e74bfd3a10e98d191b7d0107b7d3c6bd35285a"}}