{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:T2KZNND322DNAYGNEFG74ZBKN7","short_pith_number":"pith:T2KZNND3","canonical_record":{"source":{"id":"1710.05459","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T16:57:27Z","cross_cats_sorted":[],"title_canon_sha256":"11533b850dc701dd4902f24b493a77ead8c6a363b09dd458ba1daa26e26162e4","abstract_canon_sha256":"c9e8cc559141a6f89c7d7aa83888d240559492ce9d7059f36ca87c2e6cf4cb4f"},"schema_version":"1.0"},"canonical_sha256":"9e9596b47bd686d060cd214dfe642a6ff18d69a9c03b1d0ef093a04f4f58cdc9","source":{"kind":"arxiv","id":"1710.05459","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.05459","created_at":"2026-05-18T00:32:49Z"},{"alias_kind":"arxiv_version","alias_value":"1710.05459v1","created_at":"2026-05-18T00:32:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.05459","created_at":"2026-05-18T00:32:49Z"},{"alias_kind":"pith_short_12","alias_value":"T2KZNND322DN","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"T2KZNND322DNAYGN","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"T2KZNND3","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:T2KZNND322DNAYGNEFG74ZBKN7","target":"record","payload":{"canonical_record":{"source":{"id":"1710.05459","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T16:57:27Z","cross_cats_sorted":[],"title_canon_sha256":"11533b850dc701dd4902f24b493a77ead8c6a363b09dd458ba1daa26e26162e4","abstract_canon_sha256":"c9e8cc559141a6f89c7d7aa83888d240559492ce9d7059f36ca87c2e6cf4cb4f"},"schema_version":"1.0"},"canonical_sha256":"9e9596b47bd686d060cd214dfe642a6ff18d69a9c03b1d0ef093a04f4f58cdc9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:49.357924Z","signature_b64":"mVupjF8EIKuHhOF0H+lJOvgq3+1Sm6yn+R0r1i5KDNG5/MFqXtXgKzCVLG4zyki/s8KM3wkNOLHP5lKfHGe9AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e9596b47bd686d060cd214dfe642a6ff18d69a9c03b1d0ef093a04f4f58cdc9","last_reissued_at":"2026-05-18T00:32:49.357149Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:49.357149Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.05459","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":"N7CPv+oHk4CnSWDdL/84Je0NmhssR/5T/E4PFCD03F8YqJGDmqtC4XbcM+W6TCnLeVMx83nbOZ2LQXpuJ9sLDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T05:02:47.740201Z"},"content_sha256":"9f7d3db718cd1ae51ebbd614205690b843b98578dda2cf1d884a4d2168f7d459","schema_version":"1.0","event_id":"sha256:9f7d3db718cd1ae51ebbd614205690b843b98578dda2cf1d884a4d2168f7d459"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:T2KZNND322DNAYGNEFG74ZBKN7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. I. Dark Energy Camera Discovery of the Optical Counterpart","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. A. Plazas, A. Benoit-L\\'evy, A. Carnero Rosell, A. C. C. Louren\\c{c}o, A. Drlica-Wagner, A. K. Romer, A. Palmese, A. Rest, A. Roodman, A. R. Walker, A. Stebbins, A. Zenteno, B. D. Metzger, B. Farr, B. Flaugher, B. Jain, B. Nord, B. Yanny, C. B. D'Andrea, C. Conselice, C. Davis, C. E. Cunha, C. Hanna, C. L. Fryer, D. A. Brown, D. A. Finley, D. A. Goldstein, D. Brooks, D. Brout, D. E. Holz, D. Gruen, D. J. James, D. J. Schlegel, D. Kasen, D. L. Burke, D. L. Tucker, D. Petravick, D. Scolnic, D. Thomas, D. W. Gerdes, E. Balbinot, E. Berger, E. Bertin, E. Buckley-Geer, E. Fernandez, E. Gaztanaga, E. Krause, E. Neilsen, E. Quataert, E. R. Cook, E. Sanchez, E. S. Rykoff, E. Suchyta, F. B. Abdalla, F. Durret, Fermilab), F. J. Castander, F. Menanteau, F. Paz-Chinch\\'on, F. Sobreira, G. E. Medina, G. Gutierrez, G. Tarle, H. Chen, H. Lin, H. T. Diehl, I. Sevilla-Noarbe, J. Annis, J. Carretero, J. Frieman, J. Garc\\'ia-Bellido, J. Gschwend, J. J. Mohr, J. L. Carlin, J. L. Marshall, J. Marriner, J. Muir, J. P. Dietrich, J. Weller, K. Bechtol, K. D. Alexander, K. Herner, K. Honscheid, K. Kuehn, L. F. Secco, L. N. da Costa, M. A. G. Maia, M. A. Troxel, M. Banerji, M. Carrasco Kind, M. Crocce, M. D. Johnson, M. E. C. Swanson, M. Lima, M. March, M. Nicholl, M. R. Drout, M. Sako, M. Sauseda, M. Schubnell, M. Smith, M. Soares-Santos (Brandeis, M. S .S. Gill, M. W. G. Johnson, N. Kuropatkin, O. Lahav, P. A. A. Lopes, P. Blanchard, P. Cowperthwaite, P. Doel, P. Fosalba, P. K. G. Williams, R. A. Gruendl, R. Chornock, R. C. Nichol, R. C. Smith, R. C. Thomas, R. E. Butler, R. G. McMahon, R. H. Wechsler, R. J. Foley, R. Kessler, R. Kron, R. L. C. Ogando, R. Margutti, R. Miquel, R. R. Mu\\~noz, S. Allam, S. Desai, S. Kent, S. Kuhlmann, T. Eftekhari, T. F. Eifler, T. Giannantonio, T. Jeltema, T. Matheson, T. M. C. Abbott, T. S. Li, V. A. Villar, V. Scarpine, V. Vikram, W. Fong, W. G. Hartley, W. Wester, Y. Zhang, Z. Doctor","submitted_at":"2017-10-16T16:57:27Z","abstract_excerpt":"We present the Dark Energy Camera (DECam) discovery of the optical counterpart of the first binary neutron star merger detected through gravitational wave emission, GW170817. Our observations commenced 10.5 hours post-merger, as soon as the localization region became accessible from Chile. We imaged 70 deg$^2$ in the $i$ and $z$ bands, covering 93\\% of the initial integrated localization probability, to a depth necessary to identify likely optical counterparts (e.g., a kilonova). At 11.4 hours post-merger we detected a bright optical transient located $10.6''$ from the nucleus of NGC\\,4993 at "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.05459","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":"Sz+XOeHoncb7tCX3zcIpugHCSwKEajx/kiQDAIJTp7Zn1RVxe4ZcT2VVAObZi1YIcRcEhnt8ozN8XCaR96ebDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T05:02:47.740958Z"},"content_sha256":"b36fc8fdc5bdb3230a1b94bc25aed14573c75495429b2ab5b0691d107061db2a","schema_version":"1.0","event_id":"sha256:b36fc8fdc5bdb3230a1b94bc25aed14573c75495429b2ab5b0691d107061db2a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T2KZNND322DNAYGNEFG74ZBKN7/bundle.json","state_url":"https://pith.science/pith/T2KZNND322DNAYGNEFG74ZBKN7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T2KZNND322DNAYGNEFG74ZBKN7/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":"2026-05-26T05:02:47Z","links":{"resolver":"https://pith.science/pith/T2KZNND322DNAYGNEFG74ZBKN7","bundle":"https://pith.science/pith/T2KZNND322DNAYGNEFG74ZBKN7/bundle.json","state":"https://pith.science/pith/T2KZNND322DNAYGNEFG74ZBKN7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T2KZNND322DNAYGNEFG74ZBKN7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:T2KZNND322DNAYGNEFG74ZBKN7","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":"c9e8cc559141a6f89c7d7aa83888d240559492ce9d7059f36ca87c2e6cf4cb4f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T16:57:27Z","title_canon_sha256":"11533b850dc701dd4902f24b493a77ead8c6a363b09dd458ba1daa26e26162e4"},"schema_version":"1.0","source":{"id":"1710.05459","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.05459","created_at":"2026-05-18T00:32:49Z"},{"alias_kind":"arxiv_version","alias_value":"1710.05459v1","created_at":"2026-05-18T00:32:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.05459","created_at":"2026-05-18T00:32:49Z"},{"alias_kind":"pith_short_12","alias_value":"T2KZNND322DN","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"T2KZNND322DNAYGN","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"T2KZNND3","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:b36fc8fdc5bdb3230a1b94bc25aed14573c75495429b2ab5b0691d107061db2a","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 the Dark Energy Camera (DECam) discovery of the optical counterpart of the first binary neutron star merger detected through gravitational wave emission, GW170817. Our observations commenced 10.5 hours post-merger, as soon as the localization region became accessible from Chile. We imaged 70 deg$^2$ in the $i$ and $z$ bands, covering 93\\% of the initial integrated localization probability, to a depth necessary to identify likely optical counterparts (e.g., a kilonova). At 11.4 hours post-merger we detected a bright optical transient located $10.6''$ from the nucleus of NGC\\,4993 at ","authors_text":"A. A. Plazas, A. Benoit-L\\'evy, A. Carnero Rosell, A. C. C. Louren\\c{c}o, A. Drlica-Wagner, A. K. Romer, A. Palmese, A. Rest, A. Roodman, A. R. Walker, A. Stebbins, A. Zenteno, B. D. Metzger, B. Farr, B. Flaugher, B. Jain, B. Nord, B. Yanny, C. B. D'Andrea, C. Conselice, C. Davis, C. E. Cunha, C. Hanna, C. L. Fryer, D. A. Brown, D. A. Finley, D. A. Goldstein, D. Brooks, D. Brout, D. E. Holz, D. Gruen, D. J. James, D. J. Schlegel, D. Kasen, D. L. Burke, D. L. Tucker, D. Petravick, D. Scolnic, D. Thomas, D. W. Gerdes, E. Balbinot, E. Berger, E. Bertin, E. Buckley-Geer, E. Fernandez, E. Gaztanaga, E. Krause, E. Neilsen, E. Quataert, E. R. Cook, E. Sanchez, E. S. Rykoff, E. Suchyta, F. B. Abdalla, F. Durret, Fermilab), F. J. Castander, F. Menanteau, F. Paz-Chinch\\'on, F. Sobreira, G. E. Medina, G. Gutierrez, G. Tarle, H. Chen, H. Lin, H. T. Diehl, I. Sevilla-Noarbe, J. Annis, J. Carretero, J. Frieman, J. Garc\\'ia-Bellido, J. Gschwend, J. J. Mohr, J. L. Carlin, J. L. Marshall, J. Marriner, J. Muir, J. P. Dietrich, J. Weller, K. Bechtol, K. D. Alexander, K. Herner, K. Honscheid, K. Kuehn, L. F. Secco, L. N. da Costa, M. A. G. Maia, M. A. Troxel, M. Banerji, M. Carrasco Kind, M. Crocce, M. D. Johnson, M. E. C. Swanson, M. Lima, M. March, M. Nicholl, M. R. Drout, M. Sako, M. Sauseda, M. Schubnell, M. Smith, M. Soares-Santos (Brandeis, M. S .S. Gill, M. W. G. Johnson, N. Kuropatkin, O. Lahav, P. A. A. Lopes, P. Blanchard, P. Cowperthwaite, P. Doel, P. Fosalba, P. K. G. Williams, R. A. Gruendl, R. Chornock, R. C. Nichol, R. C. Smith, R. C. Thomas, R. E. Butler, R. G. McMahon, R. H. Wechsler, R. J. Foley, R. Kessler, R. Kron, R. L. C. Ogando, R. Margutti, R. Miquel, R. R. Mu\\~noz, S. Allam, S. Desai, S. Kent, S. Kuhlmann, T. Eftekhari, T. F. Eifler, T. Giannantonio, T. Jeltema, T. Matheson, T. M. C. Abbott, T. S. Li, V. A. Villar, V. Scarpine, V. Vikram, W. Fong, W. G. Hartley, W. Wester, Y. Zhang, Z. Doctor","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T16:57:27Z","title":"The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. I. Dark Energy Camera Discovery of the Optical Counterpart"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.05459","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":"sha256:9f7d3db718cd1ae51ebbd614205690b843b98578dda2cf1d884a4d2168f7d459","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":"c9e8cc559141a6f89c7d7aa83888d240559492ce9d7059f36ca87c2e6cf4cb4f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T16:57:27Z","title_canon_sha256":"11533b850dc701dd4902f24b493a77ead8c6a363b09dd458ba1daa26e26162e4"},"schema_version":"1.0","source":{"id":"1710.05459","kind":"arxiv","version":1}},"canonical_sha256":"9e9596b47bd686d060cd214dfe642a6ff18d69a9c03b1d0ef093a04f4f58cdc9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e9596b47bd686d060cd214dfe642a6ff18d69a9c03b1d0ef093a04f4f58cdc9","first_computed_at":"2026-05-18T00:32:49.357149Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:49.357149Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mVupjF8EIKuHhOF0H+lJOvgq3+1Sm6yn+R0r1i5KDNG5/MFqXtXgKzCVLG4zyki/s8KM3wkNOLHP5lKfHGe9AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:49.357924Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.05459","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f7d3db718cd1ae51ebbd614205690b843b98578dda2cf1d884a4d2168f7d459","sha256:b36fc8fdc5bdb3230a1b94bc25aed14573c75495429b2ab5b0691d107061db2a"],"state_sha256":"6b1a59c094aefe09779dd62b364af4b90c9f5fedb3385cd6f0b5ec6dcfcc805d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RhmBb8U/4jcabuGH/9Fx7BRWo5T1BBA39ONfl6nu9HMbTwJnI9OyjBdWzHlhvRyheOWcrcxItsYs1ogVJlD8BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T05:02:47.744886Z","bundle_sha256":"4d1393878cb75845020d5fc169b7ef33b0eaae8df42aee6f4fa8c7e8900469ad"}}