{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:6COW6A36TA7AHOAODBSU455Z25","short_pith_number":"pith:6COW6A36","canonical_record":{"source":{"id":"1509.07606","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-09-25T07:32:37Z","cross_cats_sorted":[],"title_canon_sha256":"ed0907483095fe072d8f8a5aa5d2a6fe093d3adc4647ed03e10eb2cf5b1387e1","abstract_canon_sha256":"e536dae7d1a05255a9497bef872057f469b55883a30889d709dc6c488d9dd7e9"},"schema_version":"1.0"},"canonical_sha256":"f09d6f037e983e03b80e18654e77b9d74c98806e3fb5f758575fc12ff41d57f7","source":{"kind":"arxiv","id":"1509.07606","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.07606","created_at":"2026-05-18T01:27:56Z"},{"alias_kind":"arxiv_version","alias_value":"1509.07606v1","created_at":"2026-05-18T01:27:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.07606","created_at":"2026-05-18T01:27:56Z"},{"alias_kind":"pith_short_12","alias_value":"6COW6A36TA7A","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6COW6A36TA7AHOAO","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6COW6A36","created_at":"2026-05-18T12:29:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:6COW6A36TA7AHOAODBSU455Z25","target":"record","payload":{"canonical_record":{"source":{"id":"1509.07606","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-09-25T07:32:37Z","cross_cats_sorted":[],"title_canon_sha256":"ed0907483095fe072d8f8a5aa5d2a6fe093d3adc4647ed03e10eb2cf5b1387e1","abstract_canon_sha256":"e536dae7d1a05255a9497bef872057f469b55883a30889d709dc6c488d9dd7e9"},"schema_version":"1.0"},"canonical_sha256":"f09d6f037e983e03b80e18654e77b9d74c98806e3fb5f758575fc12ff41d57f7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:56.997298Z","signature_b64":"uc5Lr6xhpCw/0LO1APxtCrG083a3/Js4MMSuoqlRqbZG9UpQKEzt4VDfFF2dd09Kh14P6bIQQWcreX4uC0rZAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f09d6f037e983e03b80e18654e77b9d74c98806e3fb5f758575fc12ff41d57f7","last_reissued_at":"2026-05-18T01:27:56.996626Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:56.996626Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.07606","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":"2026-05-18T01:27:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cLWeV4G28bzlkBQ8r0pugDO99ZmmmSpoOXdwaumZbvBuBwohBXUFCZEWIb7MkrRkMtu4bdzyJcw5bTY6E1ZBBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:28:23.841698Z"},"content_sha256":"c5dd26f524e1c05c06e3d12dd25b05d28c5af06e43029c2322c8e51777df6855","schema_version":"1.0","event_id":"sha256:c5dd26f524e1c05c06e3d12dd25b05d28c5af06e43029c2322c8e51777df6855"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:6COW6A36TA7AHOAODBSU455Z25","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gone in a Blaze of Glory: the Demise of Comet C/2015 D1 (SOHO)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"David Clark, Karl Battams, Man-To Hui, Matthew Knight, Quan-Zhi Ye","submitted_at":"2015-09-25T07:32:37Z","abstract_excerpt":"We present studies of C/2015 D1 (SOHO), the first sunskirting comet ever seen from ground stations over the past half century. The Solar and Heliospheric Observatory (SOHO) witnessed its peculiar light curve with a huge dip followed by a flareup around perihelion: the dip was likely caused by sublimation of olivines, directly evidenced by a coincident temporary disappearance of the tail. The flareup likely reflects a disintegration event, which we suggest was triggered by intense thermal stress established within the nucleus interior. Photometric data reveal an increasingly dusty coma, indicat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.07606","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":"2026-05-18T01:27:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"smjwp5yGXHwR7IN/7Ir/uP01dnK2UUXdhvgYzXMEq8MjBOPI0iqjhV8YH+0QdYB8upoRnePh2XXTGvt2Gan6CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:28:23.842352Z"},"content_sha256":"2eedc78255da4e5e231de376e26ca94b7f2fc36f14c936d3e06c5a674531fbd7","schema_version":"1.0","event_id":"sha256:2eedc78255da4e5e231de376e26ca94b7f2fc36f14c936d3e06c5a674531fbd7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6COW6A36TA7AHOAODBSU455Z25/bundle.json","state_url":"https://pith.science/pith/6COW6A36TA7AHOAODBSU455Z25/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6COW6A36TA7AHOAODBSU455Z25/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":"2026-05-27T04:28:23Z","links":{"resolver":"https://pith.science/pith/6COW6A36TA7AHOAODBSU455Z25","bundle":"https://pith.science/pith/6COW6A36TA7AHOAODBSU455Z25/bundle.json","state":"https://pith.science/pith/6COW6A36TA7AHOAODBSU455Z25/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6COW6A36TA7AHOAODBSU455Z25/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:6COW6A36TA7AHOAODBSU455Z25","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":"e536dae7d1a05255a9497bef872057f469b55883a30889d709dc6c488d9dd7e9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-09-25T07:32:37Z","title_canon_sha256":"ed0907483095fe072d8f8a5aa5d2a6fe093d3adc4647ed03e10eb2cf5b1387e1"},"schema_version":"1.0","source":{"id":"1509.07606","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.07606","created_at":"2026-05-18T01:27:56Z"},{"alias_kind":"arxiv_version","alias_value":"1509.07606v1","created_at":"2026-05-18T01:27:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.07606","created_at":"2026-05-18T01:27:56Z"},{"alias_kind":"pith_short_12","alias_value":"6COW6A36TA7A","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6COW6A36TA7AHOAO","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6COW6A36","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:2eedc78255da4e5e231de376e26ca94b7f2fc36f14c936d3e06c5a674531fbd7","target":"graph","created_at":"2026-05-18T01:27:56Z","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 studies of C/2015 D1 (SOHO), the first sunskirting comet ever seen from ground stations over the past half century. The Solar and Heliospheric Observatory (SOHO) witnessed its peculiar light curve with a huge dip followed by a flareup around perihelion: the dip was likely caused by sublimation of olivines, directly evidenced by a coincident temporary disappearance of the tail. The flareup likely reflects a disintegration event, which we suggest was triggered by intense thermal stress established within the nucleus interior. Photometric data reveal an increasingly dusty coma, indicat","authors_text":"David Clark, Karl Battams, Man-To Hui, Matthew Knight, Quan-Zhi Ye","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-09-25T07:32:37Z","title":"Gone in a Blaze of Glory: the Demise of Comet C/2015 D1 (SOHO)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.07606","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:c5dd26f524e1c05c06e3d12dd25b05d28c5af06e43029c2322c8e51777df6855","target":"record","created_at":"2026-05-18T01:27:56Z","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":"e536dae7d1a05255a9497bef872057f469b55883a30889d709dc6c488d9dd7e9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-09-25T07:32:37Z","title_canon_sha256":"ed0907483095fe072d8f8a5aa5d2a6fe093d3adc4647ed03e10eb2cf5b1387e1"},"schema_version":"1.0","source":{"id":"1509.07606","kind":"arxiv","version":1}},"canonical_sha256":"f09d6f037e983e03b80e18654e77b9d74c98806e3fb5f758575fc12ff41d57f7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f09d6f037e983e03b80e18654e77b9d74c98806e3fb5f758575fc12ff41d57f7","first_computed_at":"2026-05-18T01:27:56.996626Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:56.996626Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uc5Lr6xhpCw/0LO1APxtCrG083a3/Js4MMSuoqlRqbZG9UpQKEzt4VDfFF2dd09Kh14P6bIQQWcreX4uC0rZAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:56.997298Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.07606","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c5dd26f524e1c05c06e3d12dd25b05d28c5af06e43029c2322c8e51777df6855","sha256:2eedc78255da4e5e231de376e26ca94b7f2fc36f14c936d3e06c5a674531fbd7"],"state_sha256":"cf1992df4258a821d520a47977f9032ced8211386b1cc4ddb08c7a21b1cef502"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yMJrs9FkyVcB4YTb844UEUo2aSJ7760eMj4L60+OfUJF892x2rkf24QpObDYLr2OjcWEoUdjest5KNM1o7FuAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T04:28:23.845748Z","bundle_sha256":"57201f52a29e1c865d429d1633be253cdb80527b3e8a919de5108539b2417e1c"}}