{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:LGCEQM2HEZXHSRJFANVKANCQV4","short_pith_number":"pith:LGCEQM2H","canonical_record":{"source":{"id":"1205.0815","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-03T20:11:33Z","cross_cats_sorted":[],"title_canon_sha256":"b6e288a6fbcff5dd62f455667e04ba99db5c6c423b5eceeec2cfc8ee4b4176a8","abstract_canon_sha256":"9a7903db43316f3d991cc870193812ef46511cfa7f07ceca12dd09846e2e8228"},"schema_version":"1.0"},"canonical_sha256":"5984483347266e794525036aa03450af15d132e1be87b74eb4d9310ea06263fc","source":{"kind":"arxiv","id":"1205.0815","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.0815","created_at":"2026-05-18T01:57:38Z"},{"alias_kind":"arxiv_version","alias_value":"1205.0815v1","created_at":"2026-05-18T01:57:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.0815","created_at":"2026-05-18T01:57:38Z"},{"alias_kind":"pith_short_12","alias_value":"LGCEQM2HEZXH","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LGCEQM2HEZXHSRJF","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LGCEQM2H","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:LGCEQM2HEZXHSRJFANVKANCQV4","target":"record","payload":{"canonical_record":{"source":{"id":"1205.0815","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-03T20:11:33Z","cross_cats_sorted":[],"title_canon_sha256":"b6e288a6fbcff5dd62f455667e04ba99db5c6c423b5eceeec2cfc8ee4b4176a8","abstract_canon_sha256":"9a7903db43316f3d991cc870193812ef46511cfa7f07ceca12dd09846e2e8228"},"schema_version":"1.0"},"canonical_sha256":"5984483347266e794525036aa03450af15d132e1be87b74eb4d9310ea06263fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:38.251551Z","signature_b64":"jOL9iB2zAGwvwWssW7gl1j7Mt1FMlmpfrLHvkBBrkP405z38FIqzUlQEP49aJYkvFU4jxv8Vrvro+Mz8ZoSvBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5984483347266e794525036aa03450af15d132e1be87b74eb4d9310ea06263fc","last_reissued_at":"2026-05-18T01:57:38.250950Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:38.250950Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.0815","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":"2026-05-18T01:57:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UlUgi4NTT3MOLSchWkL5fYYObPChZYnEE4PhghXk7jBd+uU0RC7vylc9EpcsTCG9mxVH3LsokIrK1LpGQ0b5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T17:43:45.488981Z"},"content_sha256":"468b19a0d8799d16d9df67aa21bcf1b7be3a34f8d52eeaa9660d92ff3869ddda","schema_version":"1.0","event_id":"sha256:468b19a0d8799d16d9df67aa21bcf1b7be3a34f8d52eeaa9660d92ff3869ddda"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:LGCEQM2HEZXHSRJFANVKANCQV4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chandra High resolution Observations of CID-42, a candidate recoiling SMBH","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Bongiorno, A. Comastri, A. Fruscione, A. Koekemoer, A. Loeb, C. Vignali, E. Piconcelli, F. Civano, G. Lanzuisi, L. Blecha, M. Brusa, M. Elvis, M. Salvato, M. Trichas, R. Gilli, S. Komossa, T. Aldcroft, V. Mainieri","submitted_at":"2012-05-03T20:11:33Z","abstract_excerpt":"We present Chandra High Resolution Camera observations of CID-42, a candidate recoiling supermassive black hole (SMBH) at z=0.359 in the COSMOS survey. CID-42 shows two optical compact sources resolved in the HST/ACS image embedded in the same galaxy structure and a velocity offset of ~1300 km/s between the H\\beta\\ broad and narrow emission line, as presented by Civano et al. (2010). Two scenarios have been proposed to explain the properties of CID-42: a GW recoiling SMBH and a double Type 1/ Type 2 AGN system, where one of the two is recoiling because of slingshot effect. In both scenario, on"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.0815","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":"2026-05-18T01:57:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sV84haUS+gc2bChRzlWwra3J9U9hPgfaeGCsyFSQ7VM17hderK1l9nOSP5Ka/vnFF4g2Kxz1XuKDUaoZAkhRAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T17:43:45.489345Z"},"content_sha256":"458c47debdc22f944a999646c55d1622f6ddcb5088cafb7963094834dff97a50","schema_version":"1.0","event_id":"sha256:458c47debdc22f944a999646c55d1622f6ddcb5088cafb7963094834dff97a50"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LGCEQM2HEZXHSRJFANVKANCQV4/bundle.json","state_url":"https://pith.science/pith/LGCEQM2HEZXHSRJFANVKANCQV4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LGCEQM2HEZXHSRJFANVKANCQV4/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":"2026-05-28T17:43:45Z","links":{"resolver":"https://pith.science/pith/LGCEQM2HEZXHSRJFANVKANCQV4","bundle":"https://pith.science/pith/LGCEQM2HEZXHSRJFANVKANCQV4/bundle.json","state":"https://pith.science/pith/LGCEQM2HEZXHSRJFANVKANCQV4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LGCEQM2HEZXHSRJFANVKANCQV4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:LGCEQM2HEZXHSRJFANVKANCQV4","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":"9a7903db43316f3d991cc870193812ef46511cfa7f07ceca12dd09846e2e8228","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-03T20:11:33Z","title_canon_sha256":"b6e288a6fbcff5dd62f455667e04ba99db5c6c423b5eceeec2cfc8ee4b4176a8"},"schema_version":"1.0","source":{"id":"1205.0815","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.0815","created_at":"2026-05-18T01:57:38Z"},{"alias_kind":"arxiv_version","alias_value":"1205.0815v1","created_at":"2026-05-18T01:57:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.0815","created_at":"2026-05-18T01:57:38Z"},{"alias_kind":"pith_short_12","alias_value":"LGCEQM2HEZXH","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LGCEQM2HEZXHSRJF","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LGCEQM2H","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:458c47debdc22f944a999646c55d1622f6ddcb5088cafb7963094834dff97a50","target":"graph","created_at":"2026-05-18T01:57:38Z","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 Chandra High Resolution Camera observations of CID-42, a candidate recoiling supermassive black hole (SMBH) at z=0.359 in the COSMOS survey. CID-42 shows two optical compact sources resolved in the HST/ACS image embedded in the same galaxy structure and a velocity offset of ~1300 km/s between the H\\beta\\ broad and narrow emission line, as presented by Civano et al. (2010). Two scenarios have been proposed to explain the properties of CID-42: a GW recoiling SMBH and a double Type 1/ Type 2 AGN system, where one of the two is recoiling because of slingshot effect. In both scenario, on","authors_text":"A. Bongiorno, A. Comastri, A. Fruscione, A. Koekemoer, A. Loeb, C. Vignali, E. Piconcelli, F. Civano, G. Lanzuisi, L. Blecha, M. Brusa, M. Elvis, M. Salvato, M. Trichas, R. Gilli, S. Komossa, T. Aldcroft, V. Mainieri","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-03T20:11:33Z","title":"Chandra High resolution Observations of CID-42, a candidate recoiling SMBH"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.0815","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":"sha256:468b19a0d8799d16d9df67aa21bcf1b7be3a34f8d52eeaa9660d92ff3869ddda","target":"record","created_at":"2026-05-18T01:57:38Z","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":"9a7903db43316f3d991cc870193812ef46511cfa7f07ceca12dd09846e2e8228","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-03T20:11:33Z","title_canon_sha256":"b6e288a6fbcff5dd62f455667e04ba99db5c6c423b5eceeec2cfc8ee4b4176a8"},"schema_version":"1.0","source":{"id":"1205.0815","kind":"arxiv","version":1}},"canonical_sha256":"5984483347266e794525036aa03450af15d132e1be87b74eb4d9310ea06263fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5984483347266e794525036aa03450af15d132e1be87b74eb4d9310ea06263fc","first_computed_at":"2026-05-18T01:57:38.250950Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:38.250950Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jOL9iB2zAGwvwWssW7gl1j7Mt1FMlmpfrLHvkBBrkP405z38FIqzUlQEP49aJYkvFU4jxv8Vrvro+Mz8ZoSvBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:38.251551Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.0815","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:468b19a0d8799d16d9df67aa21bcf1b7be3a34f8d52eeaa9660d92ff3869ddda","sha256:458c47debdc22f944a999646c55d1622f6ddcb5088cafb7963094834dff97a50"],"state_sha256":"7cc819bbd9ca88267413b2cf79fdad9cb8a9c10bc65057bcd0f8a15723179392"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yyW5NGS+/gZL8csye1a3ufiiVwCTWirahspGSEPV8EM589Wq00yyiI7v1WbIw5e9J7nqTbRESPyMEGRxkgRRAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T17:43:45.492368Z","bundle_sha256":"dc2e5ff8d1410f0f3a0237e56e9e2438a6c224dbadcf10f283cfc5c4d9f7fa69"}}