{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:QGBYVZHFBQJJCQLRJSORFIPXGF","short_pith_number":"pith:QGBYVZHF","canonical_record":{"source":{"id":"1710.05454","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T16:57:30Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"ac9053a184d6fd21b2e053baa059bd07dec5de1da3ad54d3d71016e27d25a172","abstract_canon_sha256":"e39fba63a641a0400cf02875f5b38cebf6471a6476fae8cc581e820d7a3c6bb0"},"schema_version":"1.0"},"canonical_sha256":"81838ae4e50c129141714c9d12a1f7316536f059ec32bb2d894f40d6f3ec0d02","source":{"kind":"arxiv","id":"1710.05454","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.05454","created_at":"2026-05-18T00:32:49Z"},{"alias_kind":"arxiv_version","alias_value":"1710.05454v1","created_at":"2026-05-18T00:32:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.05454","created_at":"2026-05-18T00:32:49Z"},{"alias_kind":"pith_short_12","alias_value":"QGBYVZHFBQJJ","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"QGBYVZHFBQJJCQLR","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"QGBYVZHF","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:QGBYVZHFBQJJCQLRJSORFIPXGF","target":"record","payload":{"canonical_record":{"source":{"id":"1710.05454","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T16:57:30Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"ac9053a184d6fd21b2e053baa059bd07dec5de1da3ad54d3d71016e27d25a172","abstract_canon_sha256":"e39fba63a641a0400cf02875f5b38cebf6471a6476fae8cc581e820d7a3c6bb0"},"schema_version":"1.0"},"canonical_sha256":"81838ae4e50c129141714c9d12a1f7316536f059ec32bb2d894f40d6f3ec0d02","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:49.413394Z","signature_b64":"d9ffGUA11mczwXRJxXq23pCM/xn2rcfpYm6ciLo/uEGmb99ugg1+teyscLZVuPetiRPJxdSdCs1sBCQOX/p3Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"81838ae4e50c129141714c9d12a1f7316536f059ec32bb2d894f40d6f3ec0d02","last_reissued_at":"2026-05-18T00:32:49.412582Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:49.412582Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.05454","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":"2026-05-18T00:32:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oYQ7qVwChU0sDzWeEoG9h5sPZzFUdJ+Qy0DOmzn+4+JuWqCw6IXN/bOkIPCPl4f3LNUfK4KvP3dFF2AHkQE4DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T05:54:23.584155Z"},"content_sha256":"c3dd256b4c07decdb7366aa66f10cbe85d27105a8334ca31c71b869f1c504d64","schema_version":"1.0","event_id":"sha256:c3dd256b4c07decdb7366aa66f10cbe85d27105a8334ca31c71b869f1c504d64"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:QGBYVZHFBQJJCQLRJSORFIPXGF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. IV. Detection of Near-infrared Signatures of r-process Nucleosynthesis with Gemini-South","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"A. Rest, B. D. Metzger, C. L. Fryer, D. A. Brown, D. Brout, D. E. Holz, D. Kasen, D. M. Scolnic, E. Berger, E. Quataert, H.-Y. Chen, J. A. Frieman, J. Annis, K. D. Alexander, M. Nicholl, M. R. Drout, M. Sako, M. Soares-Santos, N. Smith, P. K. Blanchard, P. K. G. Williams, P. S. Cowperthwaite, R. Chornock (Ohio University), R. J. Foley, R. Margutti, T. Eftekhari, T. Matheson, V. A. Villar, W. Fong","submitted_at":"2017-10-16T16:57:30Z","abstract_excerpt":"We present a near-infrared spectral sequence of the electromagnetic counterpart to the binary neutron star merger GW170817 detected by Advanced LIGO/Virgo. Our dataset comprises seven epochs of J+H spectra taken with FLAMINGOS-2 on Gemini-South between 1.5 and 10.5 days after the merger. In the initial epoch, the spectrum is dominated by a smooth blue continuum due to a high-velocity, lanthanide-poor blue kilonova component. Starting the following night, all subsequent spectra instead show features that are similar to those predicted in model spectra of material with a high concentration of la"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.05454","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":"2026-05-18T00:32:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6bpM42rA5HyxuzJVSMwn4SkrwOy6cLat6iPwnEFjAkYE3xWXoFD4tOuc8jxTq8vn8XRLafDmwqm9/kpDTW4JDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T05:54:23.584519Z"},"content_sha256":"512f7793e1a0fb407eaf222622fbaebb47a10c3821ea0c4d13eaca8e7d05b229","schema_version":"1.0","event_id":"sha256:512f7793e1a0fb407eaf222622fbaebb47a10c3821ea0c4d13eaca8e7d05b229"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QGBYVZHFBQJJCQLRJSORFIPXGF/bundle.json","state_url":"https://pith.science/pith/QGBYVZHFBQJJCQLRJSORFIPXGF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QGBYVZHFBQJJCQLRJSORFIPXGF/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":"2026-05-20T05:54:23Z","links":{"resolver":"https://pith.science/pith/QGBYVZHFBQJJCQLRJSORFIPXGF","bundle":"https://pith.science/pith/QGBYVZHFBQJJCQLRJSORFIPXGF/bundle.json","state":"https://pith.science/pith/QGBYVZHFBQJJCQLRJSORFIPXGF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QGBYVZHFBQJJCQLRJSORFIPXGF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:QGBYVZHFBQJJCQLRJSORFIPXGF","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":"e39fba63a641a0400cf02875f5b38cebf6471a6476fae8cc581e820d7a3c6bb0","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T16:57:30Z","title_canon_sha256":"ac9053a184d6fd21b2e053baa059bd07dec5de1da3ad54d3d71016e27d25a172"},"schema_version":"1.0","source":{"id":"1710.05454","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.05454","created_at":"2026-05-18T00:32:49Z"},{"alias_kind":"arxiv_version","alias_value":"1710.05454v1","created_at":"2026-05-18T00:32:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.05454","created_at":"2026-05-18T00:32:49Z"},{"alias_kind":"pith_short_12","alias_value":"QGBYVZHFBQJJ","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"QGBYVZHFBQJJCQLR","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"QGBYVZHF","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:512f7793e1a0fb407eaf222622fbaebb47a10c3821ea0c4d13eaca8e7d05b229","target":"graph","created_at":"2026-05-18T00:32:49Z","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 a near-infrared spectral sequence of the electromagnetic counterpart to the binary neutron star merger GW170817 detected by Advanced LIGO/Virgo. Our dataset comprises seven epochs of J+H spectra taken with FLAMINGOS-2 on Gemini-South between 1.5 and 10.5 days after the merger. In the initial epoch, the spectrum is dominated by a smooth blue continuum due to a high-velocity, lanthanide-poor blue kilonova component. Starting the following night, all subsequent spectra instead show features that are similar to those predicted in model spectra of material with a high concentration of la","authors_text":"A. Rest, B. D. Metzger, C. L. Fryer, D. A. Brown, D. Brout, D. E. Holz, D. Kasen, D. M. Scolnic, E. Berger, E. Quataert, H.-Y. Chen, J. A. Frieman, J. Annis, K. D. Alexander, M. Nicholl, M. R. Drout, M. Sako, M. Soares-Santos, N. Smith, P. K. Blanchard, P. K. G. Williams, P. S. Cowperthwaite, R. Chornock (Ohio University), R. J. Foley, R. Margutti, T. Eftekhari, T. Matheson, V. A. Villar, W. Fong","cross_cats":["astro-ph.GA","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T16:57:30Z","title":"The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. IV. Detection of Near-infrared Signatures of r-process Nucleosynthesis with Gemini-South"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.05454","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:c3dd256b4c07decdb7366aa66f10cbe85d27105a8334ca31c71b869f1c504d64","target":"record","created_at":"2026-05-18T00:32:49Z","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":"e39fba63a641a0400cf02875f5b38cebf6471a6476fae8cc581e820d7a3c6bb0","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T16:57:30Z","title_canon_sha256":"ac9053a184d6fd21b2e053baa059bd07dec5de1da3ad54d3d71016e27d25a172"},"schema_version":"1.0","source":{"id":"1710.05454","kind":"arxiv","version":1}},"canonical_sha256":"81838ae4e50c129141714c9d12a1f7316536f059ec32bb2d894f40d6f3ec0d02","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"81838ae4e50c129141714c9d12a1f7316536f059ec32bb2d894f40d6f3ec0d02","first_computed_at":"2026-05-18T00:32:49.412582Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:49.412582Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d9ffGUA11mczwXRJxXq23pCM/xn2rcfpYm6ciLo/uEGmb99ugg1+teyscLZVuPetiRPJxdSdCs1sBCQOX/p3Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:49.413394Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.05454","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c3dd256b4c07decdb7366aa66f10cbe85d27105a8334ca31c71b869f1c504d64","sha256:512f7793e1a0fb407eaf222622fbaebb47a10c3821ea0c4d13eaca8e7d05b229"],"state_sha256":"20101840f45c28c944964534edab7e51e2eb2927671d5c90f12f70ca8393807f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MmM0uHGwIuQlQx3frkEnSXMzjm9i8Snpic8Tut0oxgg10jDw9R1qTCNuwf4nJVuZawZALnSLKN/GK+hm2/wJDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T05:54:23.586485Z","bundle_sha256":"d31809f384397dcdb4fbce1b719e9689d8d52caca1c1b0a07f56aaf92b2b21ac"}}