{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GTJPUKN2T5B6QYBHWA64WLZ3O7","short_pith_number":"pith:GTJPUKN2","canonical_record":{"source":{"id":"1805.09385","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-23T19:04:41Z","cross_cats_sorted":[],"title_canon_sha256":"81d8c8c8856566abd0a21ea0d75bba5abb00400b96ec2fa8135c49abec553509","abstract_canon_sha256":"83848ed79b4afad07e05703a971773832d82d193a6aba3fd6ebbfa516ff4d443"},"schema_version":"1.0"},"canonical_sha256":"34d2fa29ba9f43e86027b03dcb2f3b77d74e8f3b00053ed19a310a9ba6d8ee38","source":{"kind":"arxiv","id":"1805.09385","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.09385","created_at":"2026-05-18T00:09:59Z"},{"alias_kind":"arxiv_version","alias_value":"1805.09385v1","created_at":"2026-05-18T00:09:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.09385","created_at":"2026-05-18T00:09:59Z"},{"alias_kind":"pith_short_12","alias_value":"GTJPUKN2T5B6","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GTJPUKN2T5B6QYBH","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GTJPUKN2","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GTJPUKN2T5B6QYBHWA64WLZ3O7","target":"record","payload":{"canonical_record":{"source":{"id":"1805.09385","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-23T19:04:41Z","cross_cats_sorted":[],"title_canon_sha256":"81d8c8c8856566abd0a21ea0d75bba5abb00400b96ec2fa8135c49abec553509","abstract_canon_sha256":"83848ed79b4afad07e05703a971773832d82d193a6aba3fd6ebbfa516ff4d443"},"schema_version":"1.0"},"canonical_sha256":"34d2fa29ba9f43e86027b03dcb2f3b77d74e8f3b00053ed19a310a9ba6d8ee38","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:59.040821Z","signature_b64":"kKqU7Am+qgirddOIT8mpKCqQNqJgcEDMBQVwr3wNtKq1atkFYCZ1bpX/m+Ik4DS5Hv0/koyHL7DZ4O0HyhsYAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"34d2fa29ba9f43e86027b03dcb2f3b77d74e8f3b00053ed19a310a9ba6d8ee38","last_reissued_at":"2026-05-18T00:09:59.040099Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:59.040099Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.09385","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":"2026-05-18T00:09:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cC36dybfKSD3P+Me+Q8in5aJ1/Hi8BRZE7XU6j/GPMN0eq4yhjfy9JphNdRxPVS1NcKQYmqkVf7FYwADkBRIAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T04:29:28.393336Z"},"content_sha256":"d72afe6a26cfefaa6517184f2b192df7811e041a392c211d76ae11caa1f913b0","schema_version":"1.0","event_id":"sha256:d72afe6a26cfefaa6517184f2b192df7811e041a392c211d76ae11caa1f913b0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GTJPUKN2T5B6QYBHWA64WLZ3O7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cyclic Changes of the Sun's Seismic Radius","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alexander Kosovichev, Jean-Pierre Rozelot","submitted_at":"2018-05-23T19:04:41Z","abstract_excerpt":"The questions whether the Sun shrinks with the solar activity and what causes this have been a subject of debate. Helioseismology provides means to measure with high precision the radial displacement of subsurface layers, co-called \"seismic radius\", through analysis of oscillation frequencies of surface gravity (f) modes. Here, we present results of a new analysis of twenty one years of helioseismology data from two space missions, Solar and Heliospheric Observatory (SoHO) and Solar Dynamics Observatory (SDO), which allow us to resolve previous uncertainties and compare variations of the seism"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.09385","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":"2026-05-18T00:09:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PFyvyonVLT7RPhpJN13TMedmwZHVsFTSOFqqq7L6uH5msBaMNZjEGmNXujQOZmyBVMq99MO3jafvBIpUeFS+Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T04:29:28.393692Z"},"content_sha256":"405faa99b07bdf411cf2bf5356bf13936c3dc6a7fd30ca44029080c8e311dc3b","schema_version":"1.0","event_id":"sha256:405faa99b07bdf411cf2bf5356bf13936c3dc6a7fd30ca44029080c8e311dc3b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GTJPUKN2T5B6QYBHWA64WLZ3O7/bundle.json","state_url":"https://pith.science/pith/GTJPUKN2T5B6QYBHWA64WLZ3O7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GTJPUKN2T5B6QYBHWA64WLZ3O7/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":"2026-05-31T04:29:28Z","links":{"resolver":"https://pith.science/pith/GTJPUKN2T5B6QYBHWA64WLZ3O7","bundle":"https://pith.science/pith/GTJPUKN2T5B6QYBHWA64WLZ3O7/bundle.json","state":"https://pith.science/pith/GTJPUKN2T5B6QYBHWA64WLZ3O7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GTJPUKN2T5B6QYBHWA64WLZ3O7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GTJPUKN2T5B6QYBHWA64WLZ3O7","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":"83848ed79b4afad07e05703a971773832d82d193a6aba3fd6ebbfa516ff4d443","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-23T19:04:41Z","title_canon_sha256":"81d8c8c8856566abd0a21ea0d75bba5abb00400b96ec2fa8135c49abec553509"},"schema_version":"1.0","source":{"id":"1805.09385","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.09385","created_at":"2026-05-18T00:09:59Z"},{"alias_kind":"arxiv_version","alias_value":"1805.09385v1","created_at":"2026-05-18T00:09:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.09385","created_at":"2026-05-18T00:09:59Z"},{"alias_kind":"pith_short_12","alias_value":"GTJPUKN2T5B6","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GTJPUKN2T5B6QYBH","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GTJPUKN2","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:405faa99b07bdf411cf2bf5356bf13936c3dc6a7fd30ca44029080c8e311dc3b","target":"graph","created_at":"2026-05-18T00:09:59Z","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 questions whether the Sun shrinks with the solar activity and what causes this have been a subject of debate. Helioseismology provides means to measure with high precision the radial displacement of subsurface layers, co-called \"seismic radius\", through analysis of oscillation frequencies of surface gravity (f) modes. Here, we present results of a new analysis of twenty one years of helioseismology data from two space missions, Solar and Heliospheric Observatory (SoHO) and Solar Dynamics Observatory (SDO), which allow us to resolve previous uncertainties and compare variations of the seism","authors_text":"Alexander Kosovichev, Jean-Pierre Rozelot","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-23T19:04:41Z","title":"Cyclic Changes of the Sun's Seismic Radius"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.09385","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:d72afe6a26cfefaa6517184f2b192df7811e041a392c211d76ae11caa1f913b0","target":"record","created_at":"2026-05-18T00:09:59Z","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":"83848ed79b4afad07e05703a971773832d82d193a6aba3fd6ebbfa516ff4d443","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-23T19:04:41Z","title_canon_sha256":"81d8c8c8856566abd0a21ea0d75bba5abb00400b96ec2fa8135c49abec553509"},"schema_version":"1.0","source":{"id":"1805.09385","kind":"arxiv","version":1}},"canonical_sha256":"34d2fa29ba9f43e86027b03dcb2f3b77d74e8f3b00053ed19a310a9ba6d8ee38","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34d2fa29ba9f43e86027b03dcb2f3b77d74e8f3b00053ed19a310a9ba6d8ee38","first_computed_at":"2026-05-18T00:09:59.040099Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:59.040099Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kKqU7Am+qgirddOIT8mpKCqQNqJgcEDMBQVwr3wNtKq1atkFYCZ1bpX/m+Ik4DS5Hv0/koyHL7DZ4O0HyhsYAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:59.040821Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.09385","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d72afe6a26cfefaa6517184f2b192df7811e041a392c211d76ae11caa1f913b0","sha256:405faa99b07bdf411cf2bf5356bf13936c3dc6a7fd30ca44029080c8e311dc3b"],"state_sha256":"bcff0274de0209256d797de0fc4b292461f12568a9640efeb34eceb3a0d09082"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zhKwkExGhM77MW+pKEC62c6vpv2WayEF6hxlVESNXcvSuTtgXe4EwjlhgrmlsqCAen3gmbmO6TJHaRS/5QZMAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T04:29:28.395674Z","bundle_sha256":"40350dac12a8a6d9a50467018ab4d8d0238f1872ff60a0164809ddb6764ae352"}}