{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:RGXBMFWECL6TVAHNBECU6CBJ7H","short_pith_number":"pith:RGXBMFWE","canonical_record":{"source":{"id":"0811.4004","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-25T01:25:37Z","cross_cats_sorted":[],"title_canon_sha256":"c6c38036b869071c77955c6ed5979155c5ba99292a2485c5c27b8c2058a94471","abstract_canon_sha256":"b4e92caf6037719557440a7c0d79cf85fba7f857aebd437c1ed40c0dc764a14b"},"schema_version":"1.0"},"canonical_sha256":"89ae1616c412fd3a80ed09054f0829f9fdf2e566eea43018b5bab60bb2a82396","source":{"kind":"arxiv","id":"0811.4004","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0811.4004","created_at":"2026-05-18T02:15:13Z"},{"alias_kind":"arxiv_version","alias_value":"0811.4004v1","created_at":"2026-05-18T02:15:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.4004","created_at":"2026-05-18T02:15:13Z"},{"alias_kind":"pith_short_12","alias_value":"RGXBMFWECL6T","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"RGXBMFWECL6TVAHN","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"RGXBMFWE","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:RGXBMFWECL6TVAHNBECU6CBJ7H","target":"record","payload":{"canonical_record":{"source":{"id":"0811.4004","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-25T01:25:37Z","cross_cats_sorted":[],"title_canon_sha256":"c6c38036b869071c77955c6ed5979155c5ba99292a2485c5c27b8c2058a94471","abstract_canon_sha256":"b4e92caf6037719557440a7c0d79cf85fba7f857aebd437c1ed40c0dc764a14b"},"schema_version":"1.0"},"canonical_sha256":"89ae1616c412fd3a80ed09054f0829f9fdf2e566eea43018b5bab60bb2a82396","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:15:13.267203Z","signature_b64":"pbwt/cDgN8tre3Y3AQ+bkq0amnfPDkxvZyJmzNIjRkcomw8e4r0HdQIoJv0aSXpPCoGUdgwI8FJPZlOhBRImDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"89ae1616c412fd3a80ed09054f0829f9fdf2e566eea43018b5bab60bb2a82396","last_reissued_at":"2026-05-18T02:15:13.266654Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:15:13.266654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0811.4004","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":"2026-05-18T02:15:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sCUOwdkBw0czs5t6zuZVImkHJVbCsJTIu2e/esSN30gz4i5UCy8BEesr1lUuKJhILU5J4LhGbpC9nBmILwGlCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T20:47:50.588352Z"},"content_sha256":"e3c7ed85b51a22b6ba1ce974d7af08ff738139a3f4018dee406b4cd8e35f168f","schema_version":"1.0","event_id":"sha256:e3c7ed85b51a22b6ba1ce974d7af08ff738139a3f4018dee406b4cd8e35f168f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:RGXBMFWECL6TVAHNBECU6CBJ7H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A new determination of the orbit and masses of the Be binary system delta Scorpii","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Mendez, A. P. Jacob, E. B. Seneta, J. Davis, J. R. North, J. W. O'Byrne, P. G. Tuthill, W. J. Tango","submitted_at":"2008-11-25T01:25:37Z","abstract_excerpt":"The binary star delta Sco (HD143275) underwent remarkable brightening in the visible in 2000, and continues to be irregularly variable. The system was observed with the Sydney University Stellar Interferometer (SUSI) in 1999, 2000, 2001, 2006 and 2007. The 1999 observations were consistent with predictions based on the previously published orbital elements. The subsequent observations can only be explained by assuming that an optically bright emission region with an angular size of > 2 +/- 1 mas formed around the primary in 2000. By 2006/2007 the size of this region grew to an estimated > 4 ma"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.4004","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":"2026-05-18T02:15:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8XXybM2Cu/eeChUrZoCEuAb1YUWwdtoHmmQpucPexST8Bwtpm43JGpkadBVci6+9HluliDGtwV1HwNGzkRgJAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T20:47:50.589002Z"},"content_sha256":"967bc2d29c005f8ad26620881360b9e430a9497fe1f7e00b67d02db74aef220f","schema_version":"1.0","event_id":"sha256:967bc2d29c005f8ad26620881360b9e430a9497fe1f7e00b67d02db74aef220f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RGXBMFWECL6TVAHNBECU6CBJ7H/bundle.json","state_url":"https://pith.science/pith/RGXBMFWECL6TVAHNBECU6CBJ7H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RGXBMFWECL6TVAHNBECU6CBJ7H/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":"2026-05-27T20:47:50Z","links":{"resolver":"https://pith.science/pith/RGXBMFWECL6TVAHNBECU6CBJ7H","bundle":"https://pith.science/pith/RGXBMFWECL6TVAHNBECU6CBJ7H/bundle.json","state":"https://pith.science/pith/RGXBMFWECL6TVAHNBECU6CBJ7H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RGXBMFWECL6TVAHNBECU6CBJ7H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:RGXBMFWECL6TVAHNBECU6CBJ7H","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":"b4e92caf6037719557440a7c0d79cf85fba7f857aebd437c1ed40c0dc764a14b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-25T01:25:37Z","title_canon_sha256":"c6c38036b869071c77955c6ed5979155c5ba99292a2485c5c27b8c2058a94471"},"schema_version":"1.0","source":{"id":"0811.4004","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0811.4004","created_at":"2026-05-18T02:15:13Z"},{"alias_kind":"arxiv_version","alias_value":"0811.4004v1","created_at":"2026-05-18T02:15:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.4004","created_at":"2026-05-18T02:15:13Z"},{"alias_kind":"pith_short_12","alias_value":"RGXBMFWECL6T","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"RGXBMFWECL6TVAHN","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"RGXBMFWE","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:967bc2d29c005f8ad26620881360b9e430a9497fe1f7e00b67d02db74aef220f","target":"graph","created_at":"2026-05-18T02:15:13Z","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":"The binary star delta Sco (HD143275) underwent remarkable brightening in the visible in 2000, and continues to be irregularly variable. The system was observed with the Sydney University Stellar Interferometer (SUSI) in 1999, 2000, 2001, 2006 and 2007. The 1999 observations were consistent with predictions based on the previously published orbital elements. The subsequent observations can only be explained by assuming that an optically bright emission region with an angular size of > 2 +/- 1 mas formed around the primary in 2000. By 2006/2007 the size of this region grew to an estimated > 4 ma","authors_text":"A. Mendez, A. P. Jacob, E. B. Seneta, J. Davis, J. R. North, J. W. O'Byrne, P. G. Tuthill, W. J. Tango","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-25T01:25:37Z","title":"A new determination of the orbit and masses of the Be binary system delta Scorpii"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.4004","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:e3c7ed85b51a22b6ba1ce974d7af08ff738139a3f4018dee406b4cd8e35f168f","target":"record","created_at":"2026-05-18T02:15:13Z","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":"b4e92caf6037719557440a7c0d79cf85fba7f857aebd437c1ed40c0dc764a14b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-25T01:25:37Z","title_canon_sha256":"c6c38036b869071c77955c6ed5979155c5ba99292a2485c5c27b8c2058a94471"},"schema_version":"1.0","source":{"id":"0811.4004","kind":"arxiv","version":1}},"canonical_sha256":"89ae1616c412fd3a80ed09054f0829f9fdf2e566eea43018b5bab60bb2a82396","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"89ae1616c412fd3a80ed09054f0829f9fdf2e566eea43018b5bab60bb2a82396","first_computed_at":"2026-05-18T02:15:13.266654Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:15:13.266654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pbwt/cDgN8tre3Y3AQ+bkq0amnfPDkxvZyJmzNIjRkcomw8e4r0HdQIoJv0aSXpPCoGUdgwI8FJPZlOhBRImDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:15:13.267203Z","signed_message":"canonical_sha256_bytes"},"source_id":"0811.4004","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e3c7ed85b51a22b6ba1ce974d7af08ff738139a3f4018dee406b4cd8e35f168f","sha256:967bc2d29c005f8ad26620881360b9e430a9497fe1f7e00b67d02db74aef220f"],"state_sha256":"d5748456d0433c682220f5e746c16f9f9d27cc41070a5afd162db7acdc8e4466"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qQcWnleoh5ND4GWtbBi7446KboG+uObxhQDBD71TDXE7WkQ1+8JP4YHUBPkQRCcb8FqAeK5CaWdA5oiycioQAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T20:47:50.592181Z","bundle_sha256":"cba3fed2d2b63a019a09df3f6bd7d9977d2b1e23f7144fc96522de938d8eb7ce"}}