{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:VCG7JNJSKWZZGUBUNT2IWDPWOZ","short_pith_number":"pith:VCG7JNJS","canonical_record":{"source":{"id":"1702.03322","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-02-10T20:37:18Z","cross_cats_sorted":[],"title_canon_sha256":"0b9cf300f347a32694fdc68d3df60f0b07a3f88f213d34dce19a24c2bded8023","abstract_canon_sha256":"8b9dd57bbcb9d83bdf49091f193cbe838295c9f6f972cfa3c92f3af8f3cb8e92"},"schema_version":"1.0"},"canonical_sha256":"a88df4b53255b39350346cf48b0df6767ffc7908b9b75c2ec2383d649a21a030","source":{"kind":"arxiv","id":"1702.03322","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.03322","created_at":"2026-05-18T00:46:37Z"},{"alias_kind":"arxiv_version","alias_value":"1702.03322v1","created_at":"2026-05-18T00:46:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.03322","created_at":"2026-05-18T00:46:37Z"},{"alias_kind":"pith_short_12","alias_value":"VCG7JNJSKWZZ","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VCG7JNJSKWZZGUBU","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VCG7JNJS","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:VCG7JNJSKWZZGUBUNT2IWDPWOZ","target":"record","payload":{"canonical_record":{"source":{"id":"1702.03322","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-02-10T20:37:18Z","cross_cats_sorted":[],"title_canon_sha256":"0b9cf300f347a32694fdc68d3df60f0b07a3f88f213d34dce19a24c2bded8023","abstract_canon_sha256":"8b9dd57bbcb9d83bdf49091f193cbe838295c9f6f972cfa3c92f3af8f3cb8e92"},"schema_version":"1.0"},"canonical_sha256":"a88df4b53255b39350346cf48b0df6767ffc7908b9b75c2ec2383d649a21a030","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:46:37.596137Z","signature_b64":"aoxjTiQ59OmHtG/vOiR6uC1WpdXfv9s8dI+yEzVqWOEy0OCVOhm2NgiVGLYjJSd6WXWHkj//tMpipttL7JLlAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a88df4b53255b39350346cf48b0df6767ffc7908b9b75c2ec2383d649a21a030","last_reissued_at":"2026-05-18T00:46:37.595608Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:46:37.595608Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1702.03322","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":"2026-05-18T00:46:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Sp5hrt6cZmU5MY2hjPnIS7fmlG3swLZRdN0ec0MFhiEzzKH2r2qI5MPH2NpkeljDpoJEd6cwhy6+UK348m0TCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T12:43:55.908619Z"},"content_sha256":"50b862362e8e53c9874d807cd7aa4bc42a24167992e905ec6955c0cb25784f45","schema_version":"1.0","event_id":"sha256:50b862362e8e53c9874d807cd7aa4bc42a24167992e905ec6955c0cb25784f45"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:VCG7JNJSKWZZGUBUNT2IWDPWOZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"ALMA mapping of rapid gas and dust variations in comet C/2012 S1 (ISON): new insights into the origin of cometary HNC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. J. Remijan, D. Bockelee-Morvan, D. C. Lis, G. Villanueva, I. M. Coulson, J. Boissier, J. Crovisier, L. Paganini, M. A. Cordiner, M. J. Mumma, N. Biver, S. B. Charnley, S. N. Milam, Y.-J. Kuan","submitted_at":"2017-02-10T20:37:18Z","abstract_excerpt":"Observations of the sungrazing comet C/2012 S1 (ISON) were carried out using the Atacama Large Millimeter/submillimeter Array (ALMA) at a heliocentric distance of 0.58-0.54 AU (pre-perihelion) on 2013 November 16-17. Temporally resolved measurements of the coma distributions of HNC, CH$_3$OH, H$_2$CO and dust were obtained over the course of about an hour on each day. During the period UT 10:10-11:00 on Nov. 16, the comet displayed a remarkable drop in activity, manifested as a $>42$% decline in the molecular line and continuum fluxes. The H$_2$CO observations are consistent with an abrupt, $\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.03322","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":"2026-05-18T00:46:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JeiEmE9Pi4Zm2UB5yhZz4n/tB1U/7NXXpimYAS+6sWyCK3sj8P2Ff3Se04k2Q12vbUHYqbH4qVdqLUjSDdVBAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T12:43:55.908988Z"},"content_sha256":"3293f29e634a2b7c48fe0cd1253e611089b6a408c1a32f6f34460fe20729b24b","schema_version":"1.0","event_id":"sha256:3293f29e634a2b7c48fe0cd1253e611089b6a408c1a32f6f34460fe20729b24b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VCG7JNJSKWZZGUBUNT2IWDPWOZ/bundle.json","state_url":"https://pith.science/pith/VCG7JNJSKWZZGUBUNT2IWDPWOZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VCG7JNJSKWZZGUBUNT2IWDPWOZ/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":"2026-05-20T12:43:55Z","links":{"resolver":"https://pith.science/pith/VCG7JNJSKWZZGUBUNT2IWDPWOZ","bundle":"https://pith.science/pith/VCG7JNJSKWZZGUBUNT2IWDPWOZ/bundle.json","state":"https://pith.science/pith/VCG7JNJSKWZZGUBUNT2IWDPWOZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VCG7JNJSKWZZGUBUNT2IWDPWOZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VCG7JNJSKWZZGUBUNT2IWDPWOZ","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":"8b9dd57bbcb9d83bdf49091f193cbe838295c9f6f972cfa3c92f3af8f3cb8e92","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-02-10T20:37:18Z","title_canon_sha256":"0b9cf300f347a32694fdc68d3df60f0b07a3f88f213d34dce19a24c2bded8023"},"schema_version":"1.0","source":{"id":"1702.03322","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.03322","created_at":"2026-05-18T00:46:37Z"},{"alias_kind":"arxiv_version","alias_value":"1702.03322v1","created_at":"2026-05-18T00:46:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.03322","created_at":"2026-05-18T00:46:37Z"},{"alias_kind":"pith_short_12","alias_value":"VCG7JNJSKWZZ","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VCG7JNJSKWZZGUBU","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VCG7JNJS","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:3293f29e634a2b7c48fe0cd1253e611089b6a408c1a32f6f34460fe20729b24b","target":"graph","created_at":"2026-05-18T00:46:37Z","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":"Observations of the sungrazing comet C/2012 S1 (ISON) were carried out using the Atacama Large Millimeter/submillimeter Array (ALMA) at a heliocentric distance of 0.58-0.54 AU (pre-perihelion) on 2013 November 16-17. Temporally resolved measurements of the coma distributions of HNC, CH$_3$OH, H$_2$CO and dust were obtained over the course of about an hour on each day. During the period UT 10:10-11:00 on Nov. 16, the comet displayed a remarkable drop in activity, manifested as a $>42$% decline in the molecular line and continuum fluxes. The H$_2$CO observations are consistent with an abrupt, $\\","authors_text":"A. J. Remijan, D. Bockelee-Morvan, D. C. Lis, G. Villanueva, I. M. Coulson, J. Boissier, J. Crovisier, L. Paganini, M. A. Cordiner, M. J. Mumma, N. Biver, S. B. Charnley, S. N. Milam, Y.-J. Kuan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-02-10T20:37:18Z","title":"ALMA mapping of rapid gas and dust variations in comet C/2012 S1 (ISON): new insights into the origin of cometary HNC"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.03322","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":"sha256:50b862362e8e53c9874d807cd7aa4bc42a24167992e905ec6955c0cb25784f45","target":"record","created_at":"2026-05-18T00:46:37Z","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":"8b9dd57bbcb9d83bdf49091f193cbe838295c9f6f972cfa3c92f3af8f3cb8e92","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-02-10T20:37:18Z","title_canon_sha256":"0b9cf300f347a32694fdc68d3df60f0b07a3f88f213d34dce19a24c2bded8023"},"schema_version":"1.0","source":{"id":"1702.03322","kind":"arxiv","version":1}},"canonical_sha256":"a88df4b53255b39350346cf48b0df6767ffc7908b9b75c2ec2383d649a21a030","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a88df4b53255b39350346cf48b0df6767ffc7908b9b75c2ec2383d649a21a030","first_computed_at":"2026-05-18T00:46:37.595608Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:46:37.595608Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aoxjTiQ59OmHtG/vOiR6uC1WpdXfv9s8dI+yEzVqWOEy0OCVOhm2NgiVGLYjJSd6WXWHkj//tMpipttL7JLlAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:46:37.596137Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.03322","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:50b862362e8e53c9874d807cd7aa4bc42a24167992e905ec6955c0cb25784f45","sha256:3293f29e634a2b7c48fe0cd1253e611089b6a408c1a32f6f34460fe20729b24b"],"state_sha256":"6e751113b3a64304405f5acc3ac00bdfb8d774119ec8d7e8c2e6788a9b241cc4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3iS/S1HeL3/3F33LkEdSV1HMLacq0OHyHbIPZXAIBPLv45THnhqEzNc3dpJJPrLZzYbxp8B9PO2yFMFVz3AiDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T12:43:55.911709Z","bundle_sha256":"451a79bdec8e06e1096ad80ccc83b9a48051ec39d5c184cd49bf378e001a9f12"}}