{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:ZMUBIRBTJ7A2ADKUKQVJEAKIO6","short_pith_number":"pith:ZMUBIRBT","canonical_record":{"source":{"id":"1902.02351","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-06T19:00:01Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"c1c2e00a57a6356565cf1dbf00440d7966b10e63938e27a82b8ef7d0fbc7910e","abstract_canon_sha256":"570f45ab7df9d2b5092f66479109c4504752a923216b677f5bc8d2c62b7d5144"},"schema_version":"1.0"},"canonical_sha256":"cb281444334fc1a00d54542a92014877a68484a821354b0487253813a9663ca4","source":{"kind":"arxiv","id":"1902.02351","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.02351","created_at":"2026-05-17T23:52:01Z"},{"alias_kind":"arxiv_version","alias_value":"1902.02351v1","created_at":"2026-05-17T23:52:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.02351","created_at":"2026-05-17T23:52:01Z"},{"alias_kind":"pith_short_12","alias_value":"ZMUBIRBTJ7A2","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"ZMUBIRBTJ7A2ADKU","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"ZMUBIRBT","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:ZMUBIRBTJ7A2ADKUKQVJEAKIO6","target":"record","payload":{"canonical_record":{"source":{"id":"1902.02351","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-06T19:00:01Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"c1c2e00a57a6356565cf1dbf00440d7966b10e63938e27a82b8ef7d0fbc7910e","abstract_canon_sha256":"570f45ab7df9d2b5092f66479109c4504752a923216b677f5bc8d2c62b7d5144"},"schema_version":"1.0"},"canonical_sha256":"cb281444334fc1a00d54542a92014877a68484a821354b0487253813a9663ca4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:52:01.259325Z","signature_b64":"qx0U9DIUTj2KttguVzZWYnlVZ8yCt8Vh9XevvkgmOARcAqbIAR0WQZ9Dorhxa0W0nZ2wcv8pWNM7k9acWWUQAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb281444334fc1a00d54542a92014877a68484a821354b0487253813a9663ca4","last_reissued_at":"2026-05-17T23:52:01.258937Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:52:01.258937Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.02351","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":"2026-05-17T23:52:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CjSgN8PGw4hYOEf1jDQnOSucJtjKaFfGZPx96SQ5vVmn0oLkRPcYt24wGc4OFa15zHtjMgsTucqZVbu0agAgBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T01:23:33.453011Z"},"content_sha256":"8ac222b668e50860f68ba0aa44e942a06fb7ef26c61ed9583bf5bde88192e4df","schema_version":"1.0","event_id":"sha256:8ac222b668e50860f68ba0aa44e942a06fb7ef26c61ed9583bf5bde88192e4df"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:ZMUBIRBTJ7A2ADKUKQVJEAKIO6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of a putative supernova remnant around the long-period X-ray pulsar SXP 1323 in the Small Magellanic Cloud","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"A.Y. Kniazev, L.M. Oskinova, V.V. Gvaramadze","submitted_at":"2019-02-06T19:00:01Z","abstract_excerpt":"We report the discovery of a circular shell centred on the Be X-ray binary (BeXB) SXP 1323 in the Small Magellanic Cloud (SMC). The shell was detected in an Halpha image obtained with the Very Large Telescope (VLT). Follow-up spectroscopy with the Southern African Large Telescope (SALT) showed that the shell expands with a velocity of $\\approx$ 100 km/s and that its emission is due to shock excitation. We suggest that this shell is the remnant of the supernova explosion that led to the formation of the SXP 1323's neutron star $\\approx$ 40 000 yr ago. SXP 1323 represents the second known case o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.02351","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":"2026-05-17T23:52:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UnBzsOaf0g0ICnpARMLQzFRoqUxgAGv46Z333vZoXJmu3e6EyLezW5pSxhaS0AMcc4hSeb/KZ+zrckic5doYBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T01:23:33.453741Z"},"content_sha256":"9c7dc07bf7d89f57916d56b62050fbd6d9a3586ce0a702f447d7d87676af667c","schema_version":"1.0","event_id":"sha256:9c7dc07bf7d89f57916d56b62050fbd6d9a3586ce0a702f447d7d87676af667c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZMUBIRBTJ7A2ADKUKQVJEAKIO6/bundle.json","state_url":"https://pith.science/pith/ZMUBIRBTJ7A2ADKUKQVJEAKIO6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZMUBIRBTJ7A2ADKUKQVJEAKIO6/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":"2026-06-05T01:23:33Z","links":{"resolver":"https://pith.science/pith/ZMUBIRBTJ7A2ADKUKQVJEAKIO6","bundle":"https://pith.science/pith/ZMUBIRBTJ7A2ADKUKQVJEAKIO6/bundle.json","state":"https://pith.science/pith/ZMUBIRBTJ7A2ADKUKQVJEAKIO6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZMUBIRBTJ7A2ADKUKQVJEAKIO6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ZMUBIRBTJ7A2ADKUKQVJEAKIO6","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":"570f45ab7df9d2b5092f66479109c4504752a923216b677f5bc8d2c62b7d5144","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-06T19:00:01Z","title_canon_sha256":"c1c2e00a57a6356565cf1dbf00440d7966b10e63938e27a82b8ef7d0fbc7910e"},"schema_version":"1.0","source":{"id":"1902.02351","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.02351","created_at":"2026-05-17T23:52:01Z"},{"alias_kind":"arxiv_version","alias_value":"1902.02351v1","created_at":"2026-05-17T23:52:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.02351","created_at":"2026-05-17T23:52:01Z"},{"alias_kind":"pith_short_12","alias_value":"ZMUBIRBTJ7A2","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"ZMUBIRBTJ7A2ADKU","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"ZMUBIRBT","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:9c7dc07bf7d89f57916d56b62050fbd6d9a3586ce0a702f447d7d87676af667c","target":"graph","created_at":"2026-05-17T23:52:01Z","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 report the discovery of a circular shell centred on the Be X-ray binary (BeXB) SXP 1323 in the Small Magellanic Cloud (SMC). The shell was detected in an Halpha image obtained with the Very Large Telescope (VLT). Follow-up spectroscopy with the Southern African Large Telescope (SALT) showed that the shell expands with a velocity of $\\approx$ 100 km/s and that its emission is due to shock excitation. We suggest that this shell is the remnant of the supernova explosion that led to the formation of the SXP 1323's neutron star $\\approx$ 40 000 yr ago. SXP 1323 represents the second known case o","authors_text":"A.Y. Kniazev, L.M. Oskinova, V.V. Gvaramadze","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-06T19:00:01Z","title":"Discovery of a putative supernova remnant around the long-period X-ray pulsar SXP 1323 in the Small Magellanic Cloud"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.02351","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":"sha256:8ac222b668e50860f68ba0aa44e942a06fb7ef26c61ed9583bf5bde88192e4df","target":"record","created_at":"2026-05-17T23:52:01Z","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":"570f45ab7df9d2b5092f66479109c4504752a923216b677f5bc8d2c62b7d5144","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-06T19:00:01Z","title_canon_sha256":"c1c2e00a57a6356565cf1dbf00440d7966b10e63938e27a82b8ef7d0fbc7910e"},"schema_version":"1.0","source":{"id":"1902.02351","kind":"arxiv","version":1}},"canonical_sha256":"cb281444334fc1a00d54542a92014877a68484a821354b0487253813a9663ca4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb281444334fc1a00d54542a92014877a68484a821354b0487253813a9663ca4","first_computed_at":"2026-05-17T23:52:01.258937Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:01.258937Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qx0U9DIUTj2KttguVzZWYnlVZ8yCt8Vh9XevvkgmOARcAqbIAR0WQZ9Dorhxa0W0nZ2wcv8pWNM7k9acWWUQAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:01.259325Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.02351","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ac222b668e50860f68ba0aa44e942a06fb7ef26c61ed9583bf5bde88192e4df","sha256:9c7dc07bf7d89f57916d56b62050fbd6d9a3586ce0a702f447d7d87676af667c"],"state_sha256":"2b56004777c4609e735369627ecc649d1a0139f743f11c141ed5aba762570a53"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vF7H5V43DHS/Zo4VOEwiyPBZfNhYcNKBEIgC531cJDhxFTpmShNRMq89NifkN3tsXdry9QFBy3mkgjRgFydkDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T01:23:33.457249Z","bundle_sha256":"bead0a715f8e28e98f334aa9068b402150b82ec95266862319aa5c60db0029c3"}}