{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:EEAPYJF5U37VBUW6RSWGACQLD3","short_pith_number":"pith:EEAPYJF5","canonical_record":{"source":{"id":"1810.07739","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-17T19:08:23Z","cross_cats_sorted":[],"title_canon_sha256":"1118824bad293bac0f1f0d2c13b5a586bc51ea3c5ad6a01e308972dc3ab7a55e","abstract_canon_sha256":"e4f72e07cf796a5638e753230879c08ac87dad71236144e26e0c526735538300"},"schema_version":"1.0"},"canonical_sha256":"2100fc24bda6ff50d2de8cac600a0b1ec8812e85af5adfe4c5566fd7b6b6f2ec","source":{"kind":"arxiv","id":"1810.07739","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.07739","created_at":"2026-05-18T00:02:54Z"},{"alias_kind":"arxiv_version","alias_value":"1810.07739v1","created_at":"2026-05-18T00:02:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.07739","created_at":"2026-05-18T00:02:54Z"},{"alias_kind":"pith_short_12","alias_value":"EEAPYJF5U37V","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"EEAPYJF5U37VBUW6","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"EEAPYJF5","created_at":"2026-05-18T12:32:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:EEAPYJF5U37VBUW6RSWGACQLD3","target":"record","payload":{"canonical_record":{"source":{"id":"1810.07739","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-17T19:08:23Z","cross_cats_sorted":[],"title_canon_sha256":"1118824bad293bac0f1f0d2c13b5a586bc51ea3c5ad6a01e308972dc3ab7a55e","abstract_canon_sha256":"e4f72e07cf796a5638e753230879c08ac87dad71236144e26e0c526735538300"},"schema_version":"1.0"},"canonical_sha256":"2100fc24bda6ff50d2de8cac600a0b1ec8812e85af5adfe4c5566fd7b6b6f2ec","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:02:54.357267Z","signature_b64":"TNXsVXSd6kHLcucTQeZlKQWobTv/+Vf9QK3ZeV8jasRCGMu0ul6Zx2wa+lVRAlZ8hnNoUEaPOK4YbJxfkiRyBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2100fc24bda6ff50d2de8cac600a0b1ec8812e85af5adfe4c5566fd7b6b6f2ec","last_reissued_at":"2026-05-18T00:02:54.356449Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:02:54.356449Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.07739","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":"2026-05-18T00:02:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FSepnrcR3NaEGwcFNMTBuZ7QmaishB3teTR0FU215IVmStKZH2i8lhtL2mBhW2aNVZxLbulfwxyuvpjQ2we/BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:24:52.981608Z"},"content_sha256":"d9cce02b3c919e07d408e37472411889b621b36a9e1711b59f41ee78e4501c2e","schema_version":"1.0","event_id":"sha256:d9cce02b3c919e07d408e37472411889b621b36a9e1711b59f41ee78e4501c2e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:EEAPYJF5U37VBUW6RSWGACQLD3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simultaneous VLBI Astrometry of H2O and SiO Masers toward the Semiregular Variable R Crateris","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Dong-Hwan Yoon, Dong-Jin Kim, Haneul Yang, Jaeheon Kim, Mar\\'ia J. Rioja, Richard Dodson, Se-Hyung Cho, Suk-Jin Yoon, Yoon Kyung Choi, Youngjoo Yun","submitted_at":"2018-10-17T19:08:23Z","abstract_excerpt":"We obtained, for the first time, astrometrically registered maps of the 22.2 GHz H2O and 42.8, 43.1, and 86.2 GHz SiO maser emission toward the semiregular b-type variable (SRb) R Crateris, at three epochs (2015 May 21, and 2016 January 7 and 26) using the Korean Very-long-baseline Interferometry Network. The SiO masers show a ring-like spatial structure, while the H2O maser shows a very asymmetric one-side outflow structure, which is located at the southern part of the ring-like SiO maser feature. We also found that the 86.2 GHz SiO maser spots are distributed in an inner region, compared to "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.07739","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":"2026-05-18T00:02:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+8ZjZpA4Tomgzzd0/9CVm7IO2S85NYM1hDCXUw+E11BuwaxmCPqzssQYA1d61tA/IqpcPSsHKh6mnZgwCanWAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:24:52.982301Z"},"content_sha256":"6fb36424d38ee5bcf28efe1bd86997c95ac17698e08f34725501b1be4fdc8cff","schema_version":"1.0","event_id":"sha256:6fb36424d38ee5bcf28efe1bd86997c95ac17698e08f34725501b1be4fdc8cff"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EEAPYJF5U37VBUW6RSWGACQLD3/bundle.json","state_url":"https://pith.science/pith/EEAPYJF5U37VBUW6RSWGACQLD3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EEAPYJF5U37VBUW6RSWGACQLD3/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":"2026-05-25T15:24:52Z","links":{"resolver":"https://pith.science/pith/EEAPYJF5U37VBUW6RSWGACQLD3","bundle":"https://pith.science/pith/EEAPYJF5U37VBUW6RSWGACQLD3/bundle.json","state":"https://pith.science/pith/EEAPYJF5U37VBUW6RSWGACQLD3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EEAPYJF5U37VBUW6RSWGACQLD3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:EEAPYJF5U37VBUW6RSWGACQLD3","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":"e4f72e07cf796a5638e753230879c08ac87dad71236144e26e0c526735538300","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-17T19:08:23Z","title_canon_sha256":"1118824bad293bac0f1f0d2c13b5a586bc51ea3c5ad6a01e308972dc3ab7a55e"},"schema_version":"1.0","source":{"id":"1810.07739","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.07739","created_at":"2026-05-18T00:02:54Z"},{"alias_kind":"arxiv_version","alias_value":"1810.07739v1","created_at":"2026-05-18T00:02:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.07739","created_at":"2026-05-18T00:02:54Z"},{"alias_kind":"pith_short_12","alias_value":"EEAPYJF5U37V","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"EEAPYJF5U37VBUW6","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"EEAPYJF5","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:6fb36424d38ee5bcf28efe1bd86997c95ac17698e08f34725501b1be4fdc8cff","target":"graph","created_at":"2026-05-18T00:02:54Z","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 obtained, for the first time, astrometrically registered maps of the 22.2 GHz H2O and 42.8, 43.1, and 86.2 GHz SiO maser emission toward the semiregular b-type variable (SRb) R Crateris, at three epochs (2015 May 21, and 2016 January 7 and 26) using the Korean Very-long-baseline Interferometry Network. The SiO masers show a ring-like spatial structure, while the H2O maser shows a very asymmetric one-side outflow structure, which is located at the southern part of the ring-like SiO maser feature. We also found that the 86.2 GHz SiO maser spots are distributed in an inner region, compared to ","authors_text":"Dong-Hwan Yoon, Dong-Jin Kim, Haneul Yang, Jaeheon Kim, Mar\\'ia J. Rioja, Richard Dodson, Se-Hyung Cho, Suk-Jin Yoon, Yoon Kyung Choi, Youngjoo Yun","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-17T19:08:23Z","title":"Simultaneous VLBI Astrometry of H2O and SiO Masers toward the Semiregular Variable R Crateris"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.07739","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:d9cce02b3c919e07d408e37472411889b621b36a9e1711b59f41ee78e4501c2e","target":"record","created_at":"2026-05-18T00:02:54Z","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":"e4f72e07cf796a5638e753230879c08ac87dad71236144e26e0c526735538300","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-17T19:08:23Z","title_canon_sha256":"1118824bad293bac0f1f0d2c13b5a586bc51ea3c5ad6a01e308972dc3ab7a55e"},"schema_version":"1.0","source":{"id":"1810.07739","kind":"arxiv","version":1}},"canonical_sha256":"2100fc24bda6ff50d2de8cac600a0b1ec8812e85af5adfe4c5566fd7b6b6f2ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2100fc24bda6ff50d2de8cac600a0b1ec8812e85af5adfe4c5566fd7b6b6f2ec","first_computed_at":"2026-05-18T00:02:54.356449Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:02:54.356449Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TNXsVXSd6kHLcucTQeZlKQWobTv/+Vf9QK3ZeV8jasRCGMu0ul6Zx2wa+lVRAlZ8hnNoUEaPOK4YbJxfkiRyBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:02:54.357267Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.07739","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9cce02b3c919e07d408e37472411889b621b36a9e1711b59f41ee78e4501c2e","sha256:6fb36424d38ee5bcf28efe1bd86997c95ac17698e08f34725501b1be4fdc8cff"],"state_sha256":"8d70782467f46583be655a16fd47a93a71e8e0a28a184b49dfe917bd66fb878f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GeauJfuMpkxMQkoU3WI4OIgra77M14MuqVUyjTcSmit2T9l6NawKx8j0cYpdSwDb8ondmadEUy5gApO5pfoyCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T15:24:52.986138Z","bundle_sha256":"db1a1c00f061424eac755504814f5a7377e686849f3cdcd2517adcb701a13cfd"}}