{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GC4HKCR25KIXQIYBP3UURHW424","short_pith_number":"pith:GC4HKCR2","canonical_record":{"source":{"id":"1812.07054","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-17T21:12:01Z","cross_cats_sorted":[],"title_canon_sha256":"88c46eed4bfcf66fe12800fbf6bbfaee91dc63647ea5845d6ec98813466c9049","abstract_canon_sha256":"b2af31d6fafc9e3c0e9430041bf21b8cfdf8e21b2d59dfbf8747a5bb801ec50d"},"schema_version":"1.0"},"canonical_sha256":"30b8750a3aea917823017ee9489edcd70fea13a9d36923dce8f29443cd9bee22","source":{"kind":"arxiv","id":"1812.07054","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.07054","created_at":"2026-05-17T23:55:18Z"},{"alias_kind":"arxiv_version","alias_value":"1812.07054v3","created_at":"2026-05-17T23:55:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.07054","created_at":"2026-05-17T23:55:18Z"},{"alias_kind":"pith_short_12","alias_value":"GC4HKCR25KIX","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GC4HKCR25KIXQIYB","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GC4HKCR2","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GC4HKCR25KIXQIYBP3UURHW424","target":"record","payload":{"canonical_record":{"source":{"id":"1812.07054","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-17T21:12:01Z","cross_cats_sorted":[],"title_canon_sha256":"88c46eed4bfcf66fe12800fbf6bbfaee91dc63647ea5845d6ec98813466c9049","abstract_canon_sha256":"b2af31d6fafc9e3c0e9430041bf21b8cfdf8e21b2d59dfbf8747a5bb801ec50d"},"schema_version":"1.0"},"canonical_sha256":"30b8750a3aea917823017ee9489edcd70fea13a9d36923dce8f29443cd9bee22","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:18.774598Z","signature_b64":"VH9A+aE9zP4MgJOWA2JfYaeXFdZ3E+GyjKc6kTn3VEyJRJjJTxE3+Qr9nYHU9kNMHJ05ABhs8tJV313KLoRzDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"30b8750a3aea917823017ee9489edcd70fea13a9d36923dce8f29443cd9bee22","last_reissued_at":"2026-05-17T23:55:18.773986Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:18.773986Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.07054","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:55:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7aCe2bcpHX2/4nJ03e/erYJia9al+wY89DIvGetJauXSd6UTxlTkQiAFnIkW3o14W6EZyD+SA8TlPDwEAE6KAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T22:44:25.001369Z"},"content_sha256":"9b98506fe31c2f23c0019e02de8e840ae17a614a54a82a4a66caf82d4855c882","schema_version":"1.0","event_id":"sha256:9b98506fe31c2f23c0019e02de8e840ae17a614a54a82a4a66caf82d4855c882"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GC4HKCR25KIXQIYBP3UURHW424","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Preperihelion Outbursts and Disintegration of Comet C/2017 S3 (Pan-STARRS)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Rainer Kracht, Zdenek Sekanina","submitted_at":"2018-12-17T21:12:01Z","abstract_excerpt":"A sequence of events, dominated by two outbursts and ending with the preperihelion disintegration of comet C/2017 S3, is examined. The onset times of the outbursts are determined with high accuracy from the light curve of the nuclear condensation before it disappeared following the second outburst. While the brightness of the condensation was declining precipitously, the total brightness continued to grow in the STEREO-A's HI1 images until two days before perihelion. The red magnitudes measured in these images refer to a uniform cloud of nuclear fragments, 2200 km^2 in projected area, that beg"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.07054","kind":"arxiv","version":3},"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":"2026-05-17T23:55:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"luWdS1GGRNHjHQMX89PAh8VcK6Ix1trz57V5yIdIVZg2cDlr7+GE0WWDS4TBzvQsYa5PTOW8P5QxEnYlaYYdDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T22:44:25.001719Z"},"content_sha256":"e182a1d74da1f81abf9c627407c0d19da00333d381053119b192adb97befdb16","schema_version":"1.0","event_id":"sha256:e182a1d74da1f81abf9c627407c0d19da00333d381053119b192adb97befdb16"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GC4HKCR25KIXQIYBP3UURHW424/bundle.json","state_url":"https://pith.science/pith/GC4HKCR25KIXQIYBP3UURHW424/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GC4HKCR25KIXQIYBP3UURHW424/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":"2026-05-28T22:44:25Z","links":{"resolver":"https://pith.science/pith/GC4HKCR25KIXQIYBP3UURHW424","bundle":"https://pith.science/pith/GC4HKCR25KIXQIYBP3UURHW424/bundle.json","state":"https://pith.science/pith/GC4HKCR25KIXQIYBP3UURHW424/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GC4HKCR25KIXQIYBP3UURHW424/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GC4HKCR25KIXQIYBP3UURHW424","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":"b2af31d6fafc9e3c0e9430041bf21b8cfdf8e21b2d59dfbf8747a5bb801ec50d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-17T21:12:01Z","title_canon_sha256":"88c46eed4bfcf66fe12800fbf6bbfaee91dc63647ea5845d6ec98813466c9049"},"schema_version":"1.0","source":{"id":"1812.07054","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.07054","created_at":"2026-05-17T23:55:18Z"},{"alias_kind":"arxiv_version","alias_value":"1812.07054v3","created_at":"2026-05-17T23:55:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.07054","created_at":"2026-05-17T23:55:18Z"},{"alias_kind":"pith_short_12","alias_value":"GC4HKCR25KIX","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GC4HKCR25KIXQIYB","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GC4HKCR2","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:e182a1d74da1f81abf9c627407c0d19da00333d381053119b192adb97befdb16","target":"graph","created_at":"2026-05-17T23:55:18Z","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":"A sequence of events, dominated by two outbursts and ending with the preperihelion disintegration of comet C/2017 S3, is examined. The onset times of the outbursts are determined with high accuracy from the light curve of the nuclear condensation before it disappeared following the second outburst. While the brightness of the condensation was declining precipitously, the total brightness continued to grow in the STEREO-A's HI1 images until two days before perihelion. The red magnitudes measured in these images refer to a uniform cloud of nuclear fragments, 2200 km^2 in projected area, that beg","authors_text":"Rainer Kracht, Zdenek Sekanina","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-17T21:12:01Z","title":"Preperihelion Outbursts and Disintegration of Comet C/2017 S3 (Pan-STARRS)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.07054","kind":"arxiv","version":3},"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":"sha256:9b98506fe31c2f23c0019e02de8e840ae17a614a54a82a4a66caf82d4855c882","target":"record","created_at":"2026-05-17T23:55:18Z","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":"b2af31d6fafc9e3c0e9430041bf21b8cfdf8e21b2d59dfbf8747a5bb801ec50d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-17T21:12:01Z","title_canon_sha256":"88c46eed4bfcf66fe12800fbf6bbfaee91dc63647ea5845d6ec98813466c9049"},"schema_version":"1.0","source":{"id":"1812.07054","kind":"arxiv","version":3}},"canonical_sha256":"30b8750a3aea917823017ee9489edcd70fea13a9d36923dce8f29443cd9bee22","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"30b8750a3aea917823017ee9489edcd70fea13a9d36923dce8f29443cd9bee22","first_computed_at":"2026-05-17T23:55:18.773986Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:18.773986Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VH9A+aE9zP4MgJOWA2JfYaeXFdZ3E+GyjKc6kTn3VEyJRJjJTxE3+Qr9nYHU9kNMHJ05ABhs8tJV313KLoRzDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:18.774598Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.07054","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9b98506fe31c2f23c0019e02de8e840ae17a614a54a82a4a66caf82d4855c882","sha256:e182a1d74da1f81abf9c627407c0d19da00333d381053119b192adb97befdb16"],"state_sha256":"941c5b11a0e1d1fec49b79d1f474acd2162b7e646e447b3dd204e8a2041cf56d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PwtW9hMU4dMNCEftN611qO8Y2VHOWmuHUCnGgjkdCgxB6MIFlMN8RmzLUypdy0foaD2MWboOjrQWQtMNcx0sDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T22:44:25.003629Z","bundle_sha256":"15322f15be4e93483728480956d6fdaf794e7ebc23feb3d70d1fe05c683d122a"}}