{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:CHMJWK2E325CMS5OVC4ZX4RIGI","short_pith_number":"pith:CHMJWK2E","canonical_record":{"source":{"id":"1312.1715","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-12-05T21:44:20Z","cross_cats_sorted":[],"title_canon_sha256":"64c5b78873eb1b012dcaa33450f452904257095723e279897200d115e29f74c3","abstract_canon_sha256":"694553b97977d060c6ef15e6cbcb93b33807f22afbc05ca892cefc738601e2fa"},"schema_version":"1.0"},"canonical_sha256":"11d89b2b44deba264baea8b99bf2283210936e29e541f9feda66e2e860239398","source":{"kind":"arxiv","id":"1312.1715","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.1715","created_at":"2026-05-18T01:45:58Z"},{"alias_kind":"arxiv_version","alias_value":"1312.1715v1","created_at":"2026-05-18T01:45:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.1715","created_at":"2026-05-18T01:45:58Z"},{"alias_kind":"pith_short_12","alias_value":"CHMJWK2E325C","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"CHMJWK2E325CMS5O","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"CHMJWK2E","created_at":"2026-05-18T12:27:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:CHMJWK2E325CMS5OVC4ZX4RIGI","target":"record","payload":{"canonical_record":{"source":{"id":"1312.1715","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-12-05T21:44:20Z","cross_cats_sorted":[],"title_canon_sha256":"64c5b78873eb1b012dcaa33450f452904257095723e279897200d115e29f74c3","abstract_canon_sha256":"694553b97977d060c6ef15e6cbcb93b33807f22afbc05ca892cefc738601e2fa"},"schema_version":"1.0"},"canonical_sha256":"11d89b2b44deba264baea8b99bf2283210936e29e541f9feda66e2e860239398","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:58.044504Z","signature_b64":"r4+dtHOr9QaHapBlDYqp6MUn1/jFCFSippwmgKpmfiwhIIhxC3QZDUA6pZcxKHAkO/i0Y1Ukc7ps0+BkZeVIAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11d89b2b44deba264baea8b99bf2283210936e29e541f9feda66e2e860239398","last_reissued_at":"2026-05-18T01:45:58.044067Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:58.044067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1312.1715","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":"2026-05-18T01:45:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NpsLt/NwndWrhlZhKe1kDhVH0UvXQSUB79RK7ZalZV0QIF09cc4MSkKj6UjmIuo6NYEy4JybaL6ypYM5FeAgDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T13:12:17.033770Z"},"content_sha256":"4dc4a21d8c034ea9d33de59be565c4cdbad26a5093d5537d4ec2b1063e0e70de","schema_version":"1.0","event_id":"sha256:4dc4a21d8c034ea9d33de59be565c4cdbad26a5093d5537d4ec2b1063e0e70de"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:CHMJWK2E325CMS5OVC4ZX4RIGI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Keplerian orbit of G2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Boehle, A. M. Ghez, B. N. Sitarski, E. Becklin, G. Witzel, J. R. Lu, K. Phifer, L. Meyer, M. R. Morris, S. Yelda, T. Do","submitted_at":"2013-12-05T21:44:20Z","abstract_excerpt":"We give an update of the observations and analysis of G2 - the gaseous red emission-line object that is on a very eccentric orbit around the Galaxy's central black hole and predicted to come within 2400 Rs in early 2014. During 2013, the laser guide star adaptive optics systems on the W. M. Keck I and II telescopes were used to obtain three epochs of spectroscopy and imaging at the highest spatial resolution currently possible in the near-IR. The updated orbital solution derived from radial velocities in addition to Br-Gamma line astrometry is consistent with our earlier estimates. Strikingly,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.1715","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":"2026-05-18T01:45:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jQQAU8i+pIwEHGw2gw02LIco/5v8RMXaQy1mLrI1M+wTJlnMG3/2IRVDULo8X+mMiYQiajadvX69bLb24r6PDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T13:12:17.034446Z"},"content_sha256":"4bcbe32309d1fc1b7ee11bc37b0babb092a7a7a0bcfd2e4974c7535cdf3bcf77","schema_version":"1.0","event_id":"sha256:4bcbe32309d1fc1b7ee11bc37b0babb092a7a7a0bcfd2e4974c7535cdf3bcf77"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CHMJWK2E325CMS5OVC4ZX4RIGI/bundle.json","state_url":"https://pith.science/pith/CHMJWK2E325CMS5OVC4ZX4RIGI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CHMJWK2E325CMS5OVC4ZX4RIGI/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":"2026-05-26T13:12:17Z","links":{"resolver":"https://pith.science/pith/CHMJWK2E325CMS5OVC4ZX4RIGI","bundle":"https://pith.science/pith/CHMJWK2E325CMS5OVC4ZX4RIGI/bundle.json","state":"https://pith.science/pith/CHMJWK2E325CMS5OVC4ZX4RIGI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CHMJWK2E325CMS5OVC4ZX4RIGI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:CHMJWK2E325CMS5OVC4ZX4RIGI","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":"694553b97977d060c6ef15e6cbcb93b33807f22afbc05ca892cefc738601e2fa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-12-05T21:44:20Z","title_canon_sha256":"64c5b78873eb1b012dcaa33450f452904257095723e279897200d115e29f74c3"},"schema_version":"1.0","source":{"id":"1312.1715","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.1715","created_at":"2026-05-18T01:45:58Z"},{"alias_kind":"arxiv_version","alias_value":"1312.1715v1","created_at":"2026-05-18T01:45:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.1715","created_at":"2026-05-18T01:45:58Z"},{"alias_kind":"pith_short_12","alias_value":"CHMJWK2E325C","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"CHMJWK2E325CMS5O","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"CHMJWK2E","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:4bcbe32309d1fc1b7ee11bc37b0babb092a7a7a0bcfd2e4974c7535cdf3bcf77","target":"graph","created_at":"2026-05-18T01:45:58Z","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 give an update of the observations and analysis of G2 - the gaseous red emission-line object that is on a very eccentric orbit around the Galaxy's central black hole and predicted to come within 2400 Rs in early 2014. During 2013, the laser guide star adaptive optics systems on the W. M. Keck I and II telescopes were used to obtain three epochs of spectroscopy and imaging at the highest spatial resolution currently possible in the near-IR. The updated orbital solution derived from radial velocities in addition to Br-Gamma line astrometry is consistent with our earlier estimates. Strikingly,","authors_text":"A. Boehle, A. M. Ghez, B. N. Sitarski, E. Becklin, G. Witzel, J. R. Lu, K. Phifer, L. Meyer, M. R. Morris, S. Yelda, T. Do","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-12-05T21:44:20Z","title":"The Keplerian orbit of G2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.1715","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":"sha256:4dc4a21d8c034ea9d33de59be565c4cdbad26a5093d5537d4ec2b1063e0e70de","target":"record","created_at":"2026-05-18T01:45:58Z","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":"694553b97977d060c6ef15e6cbcb93b33807f22afbc05ca892cefc738601e2fa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-12-05T21:44:20Z","title_canon_sha256":"64c5b78873eb1b012dcaa33450f452904257095723e279897200d115e29f74c3"},"schema_version":"1.0","source":{"id":"1312.1715","kind":"arxiv","version":1}},"canonical_sha256":"11d89b2b44deba264baea8b99bf2283210936e29e541f9feda66e2e860239398","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11d89b2b44deba264baea8b99bf2283210936e29e541f9feda66e2e860239398","first_computed_at":"2026-05-18T01:45:58.044067Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:58.044067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r4+dtHOr9QaHapBlDYqp6MUn1/jFCFSippwmgKpmfiwhIIhxC3QZDUA6pZcxKHAkO/i0Y1Ukc7ps0+BkZeVIAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:58.044504Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.1715","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4dc4a21d8c034ea9d33de59be565c4cdbad26a5093d5537d4ec2b1063e0e70de","sha256:4bcbe32309d1fc1b7ee11bc37b0babb092a7a7a0bcfd2e4974c7535cdf3bcf77"],"state_sha256":"62020742d00198aebd347b0197051349a24c3494b8e2521d41a186d9354b3897"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8EteHa76XdaU8/KsIvBVVvoLziAaFqdGxYThBZgi/b1Bjhbq6+UUIva4emQ0NwXf/oqrgA/YUwz0CKFZumI3Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T13:12:17.037720Z","bundle_sha256":"227d17f36f53a63506c375f45d8820a37cac834c531f60424a2a1459bb7106f1"}}