{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:ZVYTAWGTWOFML4RXUW5ISYVRYN","short_pith_number":"pith:ZVYTAWGT","canonical_record":{"source":{"id":"1010.5794","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-27T20:06:22Z","cross_cats_sorted":[],"title_canon_sha256":"d9bd4e97f72121842064c36e44a39f9abc7bf25586e27a1515775db97646fbfa","abstract_canon_sha256":"ddbfc42f54f1c2293b69fd6a7dd9d46a24499abc3252f1c53cb3247712622283"},"schema_version":"1.0"},"canonical_sha256":"cd713058d3b38ac5f237a5ba8962b1c344ba9f2ed6c3c6b84c5fee501442ede0","source":{"kind":"arxiv","id":"1010.5794","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.5794","created_at":"2026-05-18T02:04:55Z"},{"alias_kind":"arxiv_version","alias_value":"1010.5794v1","created_at":"2026-05-18T02:04:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.5794","created_at":"2026-05-18T02:04:55Z"},{"alias_kind":"pith_short_12","alias_value":"ZVYTAWGTWOFM","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"ZVYTAWGTWOFML4RX","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"ZVYTAWGT","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:ZVYTAWGTWOFML4RXUW5ISYVRYN","target":"record","payload":{"canonical_record":{"source":{"id":"1010.5794","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-27T20:06:22Z","cross_cats_sorted":[],"title_canon_sha256":"d9bd4e97f72121842064c36e44a39f9abc7bf25586e27a1515775db97646fbfa","abstract_canon_sha256":"ddbfc42f54f1c2293b69fd6a7dd9d46a24499abc3252f1c53cb3247712622283"},"schema_version":"1.0"},"canonical_sha256":"cd713058d3b38ac5f237a5ba8962b1c344ba9f2ed6c3c6b84c5fee501442ede0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:55.614057Z","signature_b64":"VkpOt9GtM3c/nTDTFWh4IVyRDDnr/iMbEwfB5+P9CyLK/vvsSHVntpBW1LdsuOBff0Zj8ffmWVlAMseQmW1WCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cd713058d3b38ac5f237a5ba8962b1c344ba9f2ed6c3c6b84c5fee501442ede0","last_reissued_at":"2026-05-18T02:04:55.613546Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:55.613546Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1010.5794","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":"2026-05-18T02:04:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v25XeTE+VHSpJCpC3qnbLRKCA1V+06ZXc+qJObqAyqf3cJSC+S8A/qvdrb5iX6sddhb8YdvukPMpUALlLhdbAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T19:50:11.606594Z"},"content_sha256":"0e65bca95b0dee8c26289351bb6599250bb591ca5d9fdcd82c6d9c3d14185b74","schema_version":"1.0","event_id":"sha256:0e65bca95b0dee8c26289351bb6599250bb591ca5d9fdcd82c6d9c3d14185b74"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:ZVYTAWGTWOFML4RXUW5ISYVRYN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Period Change Similarities among the RR Lyrae Variables in Oosterhoff I and Oosterhoff II Globular Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alessandra Di Cecco, Alistair Walker, Andrea Kunder, Giuseppe Bono, Gloria Andreuzzi, James M. Nemec, Manuela Zoccali, Massimo Dall'Ora, Matteo Monelli, Peter B. Stetson, Roberto De Propris, Santi Cassisi","submitted_at":"2010-10-27T20:06:22Z","abstract_excerpt":"We present period change rates (dP/dt) for 42 RR Lyrae variables in the globular cluster IC$\\,$4499. Despite clear evidence of these period increases or decreases, the observed period change rates are an order of magnitude larger than predicted from theoretical models of this cluster. We find there is a preference for increasing periods, a phenomenon observed in most RR Lyrae stars in Milky Way globular clusters. The period-change rates as a function of position in the period-amplitude plane are used to examine possible evolutionary effects in OoI clusters, OoII clusters, field RR Lyrae stars "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.5794","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":"2026-05-18T02:04:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nb7Z3wfLeLBMp+9TyoXO91kmLhDV5PMqRh814c11dV/uPNLLw+BeJIuUbfNyEcP2I0zVC7gDgFg/25p9gYYjBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T19:50:11.606939Z"},"content_sha256":"bbb0a73e86ca1e031db8f1c360298001fc0c158be1fc6e19580676d0f7e0a6dc","schema_version":"1.0","event_id":"sha256:bbb0a73e86ca1e031db8f1c360298001fc0c158be1fc6e19580676d0f7e0a6dc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZVYTAWGTWOFML4RXUW5ISYVRYN/bundle.json","state_url":"https://pith.science/pith/ZVYTAWGTWOFML4RXUW5ISYVRYN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZVYTAWGTWOFML4RXUW5ISYVRYN/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":"2026-06-01T19:50:11Z","links":{"resolver":"https://pith.science/pith/ZVYTAWGTWOFML4RXUW5ISYVRYN","bundle":"https://pith.science/pith/ZVYTAWGTWOFML4RXUW5ISYVRYN/bundle.json","state":"https://pith.science/pith/ZVYTAWGTWOFML4RXUW5ISYVRYN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZVYTAWGTWOFML4RXUW5ISYVRYN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:ZVYTAWGTWOFML4RXUW5ISYVRYN","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":"ddbfc42f54f1c2293b69fd6a7dd9d46a24499abc3252f1c53cb3247712622283","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-27T20:06:22Z","title_canon_sha256":"d9bd4e97f72121842064c36e44a39f9abc7bf25586e27a1515775db97646fbfa"},"schema_version":"1.0","source":{"id":"1010.5794","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.5794","created_at":"2026-05-18T02:04:55Z"},{"alias_kind":"arxiv_version","alias_value":"1010.5794v1","created_at":"2026-05-18T02:04:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.5794","created_at":"2026-05-18T02:04:55Z"},{"alias_kind":"pith_short_12","alias_value":"ZVYTAWGTWOFM","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"ZVYTAWGTWOFML4RX","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"ZVYTAWGT","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:bbb0a73e86ca1e031db8f1c360298001fc0c158be1fc6e19580676d0f7e0a6dc","target":"graph","created_at":"2026-05-18T02:04:55Z","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 present period change rates (dP/dt) for 42 RR Lyrae variables in the globular cluster IC$\\,$4499. Despite clear evidence of these period increases or decreases, the observed period change rates are an order of magnitude larger than predicted from theoretical models of this cluster. We find there is a preference for increasing periods, a phenomenon observed in most RR Lyrae stars in Milky Way globular clusters. The period-change rates as a function of position in the period-amplitude plane are used to examine possible evolutionary effects in OoI clusters, OoII clusters, field RR Lyrae stars ","authors_text":"Alessandra Di Cecco, Alistair Walker, Andrea Kunder, Giuseppe Bono, Gloria Andreuzzi, James M. Nemec, Manuela Zoccali, Massimo Dall'Ora, Matteo Monelli, Peter B. Stetson, Roberto De Propris, Santi Cassisi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-27T20:06:22Z","title":"Period Change Similarities among the RR Lyrae Variables in Oosterhoff I and Oosterhoff II Globular Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.5794","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":"sha256:0e65bca95b0dee8c26289351bb6599250bb591ca5d9fdcd82c6d9c3d14185b74","target":"record","created_at":"2026-05-18T02:04:55Z","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":"ddbfc42f54f1c2293b69fd6a7dd9d46a24499abc3252f1c53cb3247712622283","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-10-27T20:06:22Z","title_canon_sha256":"d9bd4e97f72121842064c36e44a39f9abc7bf25586e27a1515775db97646fbfa"},"schema_version":"1.0","source":{"id":"1010.5794","kind":"arxiv","version":1}},"canonical_sha256":"cd713058d3b38ac5f237a5ba8962b1c344ba9f2ed6c3c6b84c5fee501442ede0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd713058d3b38ac5f237a5ba8962b1c344ba9f2ed6c3c6b84c5fee501442ede0","first_computed_at":"2026-05-18T02:04:55.613546Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:55.613546Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VkpOt9GtM3c/nTDTFWh4IVyRDDnr/iMbEwfB5+P9CyLK/vvsSHVntpBW1LdsuOBff0Zj8ffmWVlAMseQmW1WCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:55.614057Z","signed_message":"canonical_sha256_bytes"},"source_id":"1010.5794","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e65bca95b0dee8c26289351bb6599250bb591ca5d9fdcd82c6d9c3d14185b74","sha256:bbb0a73e86ca1e031db8f1c360298001fc0c158be1fc6e19580676d0f7e0a6dc"],"state_sha256":"c11e836b07fd1f86507017884d71878e31523d9f9f8f142ba7df3a6c46d5d546"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KqmJWml4MbKM/0lR3OO0VGIzu2oBtdPNE4ifjrVwmMhapYThkx7Lv8zFDIkqW82oka9sI13Y5HpWOsTYJ451CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T19:50:11.608795Z","bundle_sha256":"92871f8fe6de4f9d6a4ea92adce5466896f48ca1143d726ef5b7b405202c42bd"}}