{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:VXCMP7CHNGQPVYYLYQOUZLV3MN","short_pith_number":"pith:VXCMP7CH","canonical_record":{"source":{"id":"1704.03700","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-12T11:05:40Z","cross_cats_sorted":[],"title_canon_sha256":"b022b9c3dbd26c25f65e7e8fc161bd555b4d3b861917bbf7522e035a05ffa363","abstract_canon_sha256":"243c2a5c204e39a48017472afd1c0b5d09908198daf62affe1e833dadd7c8ccf"},"schema_version":"1.0"},"canonical_sha256":"adc4c7fc4769a0fae30bc41d4caebb6350897be607c0b21902c46a0d3c8becfa","source":{"kind":"arxiv","id":"1704.03700","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.03700","created_at":"2026-05-18T00:46:27Z"},{"alias_kind":"arxiv_version","alias_value":"1704.03700v1","created_at":"2026-05-18T00:46:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.03700","created_at":"2026-05-18T00:46:27Z"},{"alias_kind":"pith_short_12","alias_value":"VXCMP7CHNGQP","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VXCMP7CHNGQPVYYL","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VXCMP7CH","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:VXCMP7CHNGQPVYYLYQOUZLV3MN","target":"record","payload":{"canonical_record":{"source":{"id":"1704.03700","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-12T11:05:40Z","cross_cats_sorted":[],"title_canon_sha256":"b022b9c3dbd26c25f65e7e8fc161bd555b4d3b861917bbf7522e035a05ffa363","abstract_canon_sha256":"243c2a5c204e39a48017472afd1c0b5d09908198daf62affe1e833dadd7c8ccf"},"schema_version":"1.0"},"canonical_sha256":"adc4c7fc4769a0fae30bc41d4caebb6350897be607c0b21902c46a0d3c8becfa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:46:27.095430Z","signature_b64":"qNXErgw2lzNcJtAVW8wmhtIa1QHPux9n44pK3lw2Hh3YVW+srQgbpSh9moEcSgyr4SB45X8Cw6Dg580cySgzBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"adc4c7fc4769a0fae30bc41d4caebb6350897be607c0b21902c46a0d3c8becfa","last_reissued_at":"2026-05-18T00:46:27.094952Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:46:27.094952Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.03700","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":"2026-05-18T00:46:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0T2Js9JJ6Nsarjc5W2WWA/70d1xzIffuhVyjV1wefiaUIHQ2S2SzYY+9UXn1+ZlYOzzI/xEFMGaUNtlDGYI/BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T22:40:00.668955Z"},"content_sha256":"31a2579b64973d8bbefc178c1070526258e61e620c07390941751f261f5aa623","schema_version":"1.0","event_id":"sha256:31a2579b64973d8bbefc178c1070526258e61e620c07390941751f261f5aa623"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:VXCMP7CHNGQPVYYLYQOUZLV3MN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Polarimetry narrows down the possibilities for the Dusty S-cluster Object (DSO/G2) in the Galactic centre","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Andreas Eckart, Banafsheh Shahzamanian, Michal Zaja\\v{c}ek","submitted_at":"2017-04-12T11:05:40Z","abstract_excerpt":"There have been many speculations about the character of the dusty object moving fast in the vicinity of the Galactic centre black hole. The recent detection of polarized continuum emission provides new constraints for the models. The fact that the object is intrinsically polarized implies that it is non-spherical. The authors propose that a young star developing a bow shock can explain the main characteristics. However, more observations in the future are needed for the final confirmation of the nature of the source."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.03700","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":"2026-05-18T00:46:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AW8jhjn/dR3lLSBP77ndWVBCf6VoGv6eK6j0399D42UMY44nXS6qAJo7H5kx60Wu0/e1cerzVOLqfS29P/m9Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T22:40:00.669531Z"},"content_sha256":"1f32e060d1c13ac10d9e3a4dd0ddc2456c66dc600e1d1b832837d0f50910a79a","schema_version":"1.0","event_id":"sha256:1f32e060d1c13ac10d9e3a4dd0ddc2456c66dc600e1d1b832837d0f50910a79a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VXCMP7CHNGQPVYYLYQOUZLV3MN/bundle.json","state_url":"https://pith.science/pith/VXCMP7CHNGQPVYYLYQOUZLV3MN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VXCMP7CHNGQPVYYLYQOUZLV3MN/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":"2026-05-27T22:40:00Z","links":{"resolver":"https://pith.science/pith/VXCMP7CHNGQPVYYLYQOUZLV3MN","bundle":"https://pith.science/pith/VXCMP7CHNGQPVYYLYQOUZLV3MN/bundle.json","state":"https://pith.science/pith/VXCMP7CHNGQPVYYLYQOUZLV3MN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VXCMP7CHNGQPVYYLYQOUZLV3MN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VXCMP7CHNGQPVYYLYQOUZLV3MN","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":"243c2a5c204e39a48017472afd1c0b5d09908198daf62affe1e833dadd7c8ccf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-12T11:05:40Z","title_canon_sha256":"b022b9c3dbd26c25f65e7e8fc161bd555b4d3b861917bbf7522e035a05ffa363"},"schema_version":"1.0","source":{"id":"1704.03700","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.03700","created_at":"2026-05-18T00:46:27Z"},{"alias_kind":"arxiv_version","alias_value":"1704.03700v1","created_at":"2026-05-18T00:46:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.03700","created_at":"2026-05-18T00:46:27Z"},{"alias_kind":"pith_short_12","alias_value":"VXCMP7CHNGQP","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VXCMP7CHNGQPVYYL","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VXCMP7CH","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:1f32e060d1c13ac10d9e3a4dd0ddc2456c66dc600e1d1b832837d0f50910a79a","target":"graph","created_at":"2026-05-18T00:46:27Z","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":"There have been many speculations about the character of the dusty object moving fast in the vicinity of the Galactic centre black hole. The recent detection of polarized continuum emission provides new constraints for the models. The fact that the object is intrinsically polarized implies that it is non-spherical. The authors propose that a young star developing a bow shock can explain the main characteristics. However, more observations in the future are needed for the final confirmation of the nature of the source.","authors_text":"Andreas Eckart, Banafsheh Shahzamanian, Michal Zaja\\v{c}ek","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-12T11:05:40Z","title":"Polarimetry narrows down the possibilities for the Dusty S-cluster Object (DSO/G2) in the Galactic centre"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.03700","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":"sha256:31a2579b64973d8bbefc178c1070526258e61e620c07390941751f261f5aa623","target":"record","created_at":"2026-05-18T00:46:27Z","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":"243c2a5c204e39a48017472afd1c0b5d09908198daf62affe1e833dadd7c8ccf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-12T11:05:40Z","title_canon_sha256":"b022b9c3dbd26c25f65e7e8fc161bd555b4d3b861917bbf7522e035a05ffa363"},"schema_version":"1.0","source":{"id":"1704.03700","kind":"arxiv","version":1}},"canonical_sha256":"adc4c7fc4769a0fae30bc41d4caebb6350897be607c0b21902c46a0d3c8becfa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"adc4c7fc4769a0fae30bc41d4caebb6350897be607c0b21902c46a0d3c8becfa","first_computed_at":"2026-05-18T00:46:27.094952Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:46:27.094952Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qNXErgw2lzNcJtAVW8wmhtIa1QHPux9n44pK3lw2Hh3YVW+srQgbpSh9moEcSgyr4SB45X8Cw6Dg580cySgzBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:46:27.095430Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.03700","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:31a2579b64973d8bbefc178c1070526258e61e620c07390941751f261f5aa623","sha256:1f32e060d1c13ac10d9e3a4dd0ddc2456c66dc600e1d1b832837d0f50910a79a"],"state_sha256":"a68c46ab5ad3a3f0b98e971562796929b4b29dc7cc2a8c82d595edb642841863"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LLUJX+QQBljBS8Iq+CKEQmq9PXf/Tgr1EumUs37vo5eUkvyd167G2XqwP4pikx8I6L2UnGk8u+9VBLLEtw0SDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T22:40:00.673054Z","bundle_sha256":"d71caa7fc41e274d078047c651bc8d8183c096db13ba433a44432bee4a99c5ad"}}