{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:B3ENGBVB7OJWKHAC6J46ZWKQWT","short_pith_number":"pith:B3ENGBVB","canonical_record":{"source":{"id":"1904.08821","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-18T14:55:47Z","cross_cats_sorted":[],"title_canon_sha256":"56e63273747a8c736decbbb4c7161374588617e200cf42ea4584de5ace18748f","abstract_canon_sha256":"d84e8d3fa621601e59520143108d9862b90a9b6f3e14a74d390d225fdefbf7e0"},"schema_version":"1.0"},"canonical_sha256":"0ec8d306a1fb93651c02f279ecd950b4c60110e8908250c9520db8836a6b9204","source":{"kind":"arxiv","id":"1904.08821","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.08821","created_at":"2026-05-17T23:47:24Z"},{"alias_kind":"arxiv_version","alias_value":"1904.08821v2","created_at":"2026-05-17T23:47:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.08821","created_at":"2026-05-17T23:47:24Z"},{"alias_kind":"pith_short_12","alias_value":"B3ENGBVB7OJW","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"B3ENGBVB7OJWKHAC","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"B3ENGBVB","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:B3ENGBVB7OJWKHAC6J46ZWKQWT","target":"record","payload":{"canonical_record":{"source":{"id":"1904.08821","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-18T14:55:47Z","cross_cats_sorted":[],"title_canon_sha256":"56e63273747a8c736decbbb4c7161374588617e200cf42ea4584de5ace18748f","abstract_canon_sha256":"d84e8d3fa621601e59520143108d9862b90a9b6f3e14a74d390d225fdefbf7e0"},"schema_version":"1.0"},"canonical_sha256":"0ec8d306a1fb93651c02f279ecd950b4c60110e8908250c9520db8836a6b9204","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:47:24.799625Z","signature_b64":"dlBaA5dG5ljMdTE9D4VCc5vHycZFZGMRlUF+59XkMQwJKAIJdTbITROwGsmAdSD++bafG/9lMumhj+t2uEQHCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0ec8d306a1fb93651c02f279ecd950b4c60110e8908250c9520db8836a6b9204","last_reissued_at":"2026-05-17T23:47:24.799110Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:47:24.799110Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.08821","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:47:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9I+zkpZey1WkwwQVVMTGJRcTzUnJsnUE/6qZ7a3wmoMtscMNog10DiFVetqn9uP26ShYhTxmMYPdt/hh7TTFCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:08:50.893739Z"},"content_sha256":"90c887253880ef7f0f6a807b76c7adcb60c6b2ee21c5e46ea421786220b18394","schema_version":"1.0","event_id":"sha256:90c887253880ef7f0f6a807b76c7adcb60c6b2ee21c5e46ea421786220b18394"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:B3ENGBVB7OJWKHAC6J46ZWKQWT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Confirming interstellar C$_{60}^+$ using the Hubble Space Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"B. H. Foing, C. R. Proffitt, F. Najarro, H. Linnartz, J. Cami, M. A. Cordiner, N. L. J. Cox, P. Ehrenfreund, P. J. Sarre, R. Lallement, S. B. Charnley, T. R. Gull","submitted_at":"2019-04-18T14:55:47Z","abstract_excerpt":"Recent advances in laboratory spectroscopy lead to the claim of ionized Buckminsterfullerene (C60+) as the carrier of two diffuse interstellar bands (DIBs) in the near-infrared. However, irrefutable identification of interstellar C60+ requires a match between the wavelengths and the expected strengths of all absorption features detectable in the laboratory and in space. Here we present Hubble Space Telescope (HST) spectra of the region covering the C60+ 9348, 9365, 9428 and 9577 {\\AA} absorption bands toward seven heavily-reddened stars. We focus in particular on searching for the weaker labor"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.08821","kind":"arxiv","version":2},"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":"2026-05-17T23:47:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8M7lAXFSxIPpdBnkzLx/imEftVjS9VytuZyTbwkC6qQPwP7vU1qmJO8aETCJAlXt2USwSRW+fJnlGAE9XaGsDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:08:50.894100Z"},"content_sha256":"0087dac30bf0359608340715227312a1996be2403fc22f30c6730211ea930d80","schema_version":"1.0","event_id":"sha256:0087dac30bf0359608340715227312a1996be2403fc22f30c6730211ea930d80"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B3ENGBVB7OJWKHAC6J46ZWKQWT/bundle.json","state_url":"https://pith.science/pith/B3ENGBVB7OJWKHAC6J46ZWKQWT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B3ENGBVB7OJWKHAC6J46ZWKQWT/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":"2026-05-30T11:08:50Z","links":{"resolver":"https://pith.science/pith/B3ENGBVB7OJWKHAC6J46ZWKQWT","bundle":"https://pith.science/pith/B3ENGBVB7OJWKHAC6J46ZWKQWT/bundle.json","state":"https://pith.science/pith/B3ENGBVB7OJWKHAC6J46ZWKQWT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B3ENGBVB7OJWKHAC6J46ZWKQWT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:B3ENGBVB7OJWKHAC6J46ZWKQWT","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":"d84e8d3fa621601e59520143108d9862b90a9b6f3e14a74d390d225fdefbf7e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-18T14:55:47Z","title_canon_sha256":"56e63273747a8c736decbbb4c7161374588617e200cf42ea4584de5ace18748f"},"schema_version":"1.0","source":{"id":"1904.08821","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.08821","created_at":"2026-05-17T23:47:24Z"},{"alias_kind":"arxiv_version","alias_value":"1904.08821v2","created_at":"2026-05-17T23:47:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.08821","created_at":"2026-05-17T23:47:24Z"},{"alias_kind":"pith_short_12","alias_value":"B3ENGBVB7OJW","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"B3ENGBVB7OJWKHAC","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"B3ENGBVB","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:0087dac30bf0359608340715227312a1996be2403fc22f30c6730211ea930d80","target":"graph","created_at":"2026-05-17T23:47:24Z","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":"Recent advances in laboratory spectroscopy lead to the claim of ionized Buckminsterfullerene (C60+) as the carrier of two diffuse interstellar bands (DIBs) in the near-infrared. However, irrefutable identification of interstellar C60+ requires a match between the wavelengths and the expected strengths of all absorption features detectable in the laboratory and in space. Here we present Hubble Space Telescope (HST) spectra of the region covering the C60+ 9348, 9365, 9428 and 9577 {\\AA} absorption bands toward seven heavily-reddened stars. We focus in particular on searching for the weaker labor","authors_text":"B. H. Foing, C. R. Proffitt, F. Najarro, H. Linnartz, J. Cami, M. A. Cordiner, N. L. J. Cox, P. Ehrenfreund, P. J. Sarre, R. Lallement, S. B. Charnley, T. R. Gull","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-18T14:55:47Z","title":"Confirming interstellar C$_{60}^+$ using the Hubble Space Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.08821","kind":"arxiv","version":2},"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":"sha256:90c887253880ef7f0f6a807b76c7adcb60c6b2ee21c5e46ea421786220b18394","target":"record","created_at":"2026-05-17T23:47:24Z","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":"d84e8d3fa621601e59520143108d9862b90a9b6f3e14a74d390d225fdefbf7e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-04-18T14:55:47Z","title_canon_sha256":"56e63273747a8c736decbbb4c7161374588617e200cf42ea4584de5ace18748f"},"schema_version":"1.0","source":{"id":"1904.08821","kind":"arxiv","version":2}},"canonical_sha256":"0ec8d306a1fb93651c02f279ecd950b4c60110e8908250c9520db8836a6b9204","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ec8d306a1fb93651c02f279ecd950b4c60110e8908250c9520db8836a6b9204","first_computed_at":"2026-05-17T23:47:24.799110Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:24.799110Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dlBaA5dG5ljMdTE9D4VCc5vHycZFZGMRlUF+59XkMQwJKAIJdTbITROwGsmAdSD++bafG/9lMumhj+t2uEQHCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:24.799625Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.08821","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:90c887253880ef7f0f6a807b76c7adcb60c6b2ee21c5e46ea421786220b18394","sha256:0087dac30bf0359608340715227312a1996be2403fc22f30c6730211ea930d80"],"state_sha256":"3c59e11505cf5dbaca919a3e9338e20cbbd6fc18616a5cd7436a22db23e88236"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pZkKLLmY1di1FteDV0U3U9F3RXoXRURdH3i93LX+J4B8GjSZIGc8BwqklitLaLimWxg05eG98Ul10oPb0F/4Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T11:08:50.896288Z","bundle_sha256":"8ac2048dfdefaa4ec8e5d664137211f8725975e3755de79dabab18fefb172cfd"}}