{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:BCGV6WZ7O6A4GELNHQFFLKXBJS","short_pith_number":"pith:BCGV6WZ7","canonical_record":{"source":{"id":"1805.05428","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-14T20:26:39Z","cross_cats_sorted":[],"title_canon_sha256":"7a508d6dc9fccc4df6a727df3469f40a67e191464a926c5857453093a96b38ac","abstract_canon_sha256":"12bf14e35c226d24a605346c22516141fa3078d6e6b98e6505dbae99f25d4f29"},"schema_version":"1.0"},"canonical_sha256":"088d5f5b3f7781c3116d3c0a55aae14ca234fa872b3aaf587552a2be93a857eb","source":{"kind":"arxiv","id":"1805.05428","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.05428","created_at":"2026-05-18T00:11:49Z"},{"alias_kind":"arxiv_version","alias_value":"1805.05428v1","created_at":"2026-05-18T00:11:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.05428","created_at":"2026-05-18T00:11:49Z"},{"alias_kind":"pith_short_12","alias_value":"BCGV6WZ7O6A4","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"BCGV6WZ7O6A4GELN","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"BCGV6WZ7","created_at":"2026-05-18T12:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:BCGV6WZ7O6A4GELNHQFFLKXBJS","target":"record","payload":{"canonical_record":{"source":{"id":"1805.05428","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-14T20:26:39Z","cross_cats_sorted":[],"title_canon_sha256":"7a508d6dc9fccc4df6a727df3469f40a67e191464a926c5857453093a96b38ac","abstract_canon_sha256":"12bf14e35c226d24a605346c22516141fa3078d6e6b98e6505dbae99f25d4f29"},"schema_version":"1.0"},"canonical_sha256":"088d5f5b3f7781c3116d3c0a55aae14ca234fa872b3aaf587552a2be93a857eb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:11:49.094548Z","signature_b64":"CLc4AWgGvhQHsxI8Hs9Nrd3bJ2ougz97zkSytwg6BF5nQlk7yjcxtVzbOINUJ3CtvbY78tNp4idZ+buLMqiFBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"088d5f5b3f7781c3116d3c0a55aae14ca234fa872b3aaf587552a2be93a857eb","last_reissued_at":"2026-05-18T00:11:49.093888Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:11:49.093888Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.05428","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":"2026-05-18T00:11:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5yJID3IzCwat6bLK0mN1yrRbW+kWF/6BOXy+zX149C2MoIwhHof7OuUVP6GUSqzr5uzJuQEhrsxSBV44djs7Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:48:39.693614Z"},"content_sha256":"9511cbbd11986c81e8be8ae0385271a146d66db6930a85127bb447a39219ea06","schema_version":"1.0","event_id":"sha256:9511cbbd11986c81e8be8ae0385271a146d66db6930a85127bb447a39219ea06"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:BCGV6WZ7O6A4GELNHQFFLKXBJS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Evolving Radio Photospheres of Long-Period Variable Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"K. Akiyama, K. M. Menten, L. D. Matthews, M. J. Reid","submitted_at":"2018-05-14T20:26:39Z","abstract_excerpt":"Observations with the Karl G. Jansky Very Large Array at 46 GHz (7 mm) have been used to measure the size and shape of the radio photospheres of four long-period variable stars: R Leonis (R Leo), IRC+10216 (CW Leo), chi Cygni (chi Cyg), and W Hydrae (W Hya). The shapes of the stars range from nearly round to ellipticities of ~0.15. Comparisons with observations taken several years earlier show that the photospheric parameters (mean diameter, shape, and/or flux density) of each of the stars have changed over time. Evidence for brightness asymmetries and non-uniformities across the radio surface"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.05428","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":"2026-05-18T00:11:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qZa2nWku2dAMJbKvrYVjJ/KDnwK1I/GXzgxFperPUs9knNMJ+9DoHL1r5ArYOOzNl1UnpbcRAYcLV8B1t01BDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:48:39.693969Z"},"content_sha256":"2cd49576102d6935c19698b4e84531ee756085db7ad797d8f7eaea391ed1bad2","schema_version":"1.0","event_id":"sha256:2cd49576102d6935c19698b4e84531ee756085db7ad797d8f7eaea391ed1bad2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BCGV6WZ7O6A4GELNHQFFLKXBJS/bundle.json","state_url":"https://pith.science/pith/BCGV6WZ7O6A4GELNHQFFLKXBJS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BCGV6WZ7O6A4GELNHQFFLKXBJS/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":"2026-06-02T06:48:39Z","links":{"resolver":"https://pith.science/pith/BCGV6WZ7O6A4GELNHQFFLKXBJS","bundle":"https://pith.science/pith/BCGV6WZ7O6A4GELNHQFFLKXBJS/bundle.json","state":"https://pith.science/pith/BCGV6WZ7O6A4GELNHQFFLKXBJS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BCGV6WZ7O6A4GELNHQFFLKXBJS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:BCGV6WZ7O6A4GELNHQFFLKXBJS","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":"12bf14e35c226d24a605346c22516141fa3078d6e6b98e6505dbae99f25d4f29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-14T20:26:39Z","title_canon_sha256":"7a508d6dc9fccc4df6a727df3469f40a67e191464a926c5857453093a96b38ac"},"schema_version":"1.0","source":{"id":"1805.05428","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.05428","created_at":"2026-05-18T00:11:49Z"},{"alias_kind":"arxiv_version","alias_value":"1805.05428v1","created_at":"2026-05-18T00:11:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.05428","created_at":"2026-05-18T00:11:49Z"},{"alias_kind":"pith_short_12","alias_value":"BCGV6WZ7O6A4","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"BCGV6WZ7O6A4GELN","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"BCGV6WZ7","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:2cd49576102d6935c19698b4e84531ee756085db7ad797d8f7eaea391ed1bad2","target":"graph","created_at":"2026-05-18T00:11:49Z","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":"Observations with the Karl G. Jansky Very Large Array at 46 GHz (7 mm) have been used to measure the size and shape of the radio photospheres of four long-period variable stars: R Leonis (R Leo), IRC+10216 (CW Leo), chi Cygni (chi Cyg), and W Hydrae (W Hya). The shapes of the stars range from nearly round to ellipticities of ~0.15. Comparisons with observations taken several years earlier show that the photospheric parameters (mean diameter, shape, and/or flux density) of each of the stars have changed over time. Evidence for brightness asymmetries and non-uniformities across the radio surface","authors_text":"K. Akiyama, K. M. Menten, L. D. Matthews, M. J. Reid","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-14T20:26:39Z","title":"The Evolving Radio Photospheres of Long-Period Variable Stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.05428","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":"sha256:9511cbbd11986c81e8be8ae0385271a146d66db6930a85127bb447a39219ea06","target":"record","created_at":"2026-05-18T00:11:49Z","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":"12bf14e35c226d24a605346c22516141fa3078d6e6b98e6505dbae99f25d4f29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-05-14T20:26:39Z","title_canon_sha256":"7a508d6dc9fccc4df6a727df3469f40a67e191464a926c5857453093a96b38ac"},"schema_version":"1.0","source":{"id":"1805.05428","kind":"arxiv","version":1}},"canonical_sha256":"088d5f5b3f7781c3116d3c0a55aae14ca234fa872b3aaf587552a2be93a857eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"088d5f5b3f7781c3116d3c0a55aae14ca234fa872b3aaf587552a2be93a857eb","first_computed_at":"2026-05-18T00:11:49.093888Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:49.093888Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CLc4AWgGvhQHsxI8Hs9Nrd3bJ2ougz97zkSytwg6BF5nQlk7yjcxtVzbOINUJ3CtvbY78tNp4idZ+buLMqiFBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:49.094548Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.05428","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9511cbbd11986c81e8be8ae0385271a146d66db6930a85127bb447a39219ea06","sha256:2cd49576102d6935c19698b4e84531ee756085db7ad797d8f7eaea391ed1bad2"],"state_sha256":"88d2388756c4745f82ba2e4239deed87f4f4c514759f8ce0c5deb34d188a5da7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PPipfNxH9qLEiScR4lZUb8WSRdTQD+NZJ5ziDPU6BoVuzucqHzhbgQH5KP0RL/acxzdQuogko9y27I95hzMXBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T06:48:39.695929Z","bundle_sha256":"7a34fbb9c663bbfdeb510edc61f99eb595057def625f9b66d1337ebb8e5bb84c"}}