{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:2FBQVSHTSULFHP5QFITBPNYR3F","short_pith_number":"pith:2FBQVSHT","canonical_record":{"source":{"id":"1604.05682","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-19T18:20:34Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"58f656237fc6142df701b0b73ef027a8b36e25f3d6d16df059f5fd63ab3ebf3e","abstract_canon_sha256":"05d2fd0d26cf0eeeba7be031044c87d30fc95a172c1fb153748ce18e34738dc0"},"schema_version":"1.0"},"canonical_sha256":"d1430ac8f3951653bfb02a2617b711d9741f128a0bbe27e469099667f4e0b414","source":{"kind":"arxiv","id":"1604.05682","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.05682","created_at":"2026-05-18T01:16:12Z"},{"alias_kind":"arxiv_version","alias_value":"1604.05682v1","created_at":"2026-05-18T01:16:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.05682","created_at":"2026-05-18T01:16:12Z"},{"alias_kind":"pith_short_12","alias_value":"2FBQVSHTSULF","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2FBQVSHTSULFHP5Q","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2FBQVSHT","created_at":"2026-05-18T12:29:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:2FBQVSHTSULFHP5QFITBPNYR3F","target":"record","payload":{"canonical_record":{"source":{"id":"1604.05682","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-19T18:20:34Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"58f656237fc6142df701b0b73ef027a8b36e25f3d6d16df059f5fd63ab3ebf3e","abstract_canon_sha256":"05d2fd0d26cf0eeeba7be031044c87d30fc95a172c1fb153748ce18e34738dc0"},"schema_version":"1.0"},"canonical_sha256":"d1430ac8f3951653bfb02a2617b711d9741f128a0bbe27e469099667f4e0b414","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:12.680405Z","signature_b64":"5tz2mgZ3Z35D5V/kPB9iHk12ohsi09iV1HCA5LxzB8j7xYUPJ4DAsn+mi8muT4BwJfMra9aI9z0+TYIuaUqeAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d1430ac8f3951653bfb02a2617b711d9741f128a0bbe27e469099667f4e0b414","last_reissued_at":"2026-05-18T01:16:12.679713Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:12.679713Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.05682","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":"2026-05-18T01:16:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9ehzoUS0pOzZSfOSWFQN20Ym3XssqJ0TaHc9SVrZzOy5h6oeR1DO/qK+bojf7UsRrMhpgazlGM5t9n1Q+Q4pBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T00:06:02.659808Z"},"content_sha256":"31b11b7bf3b9d6969f056679f94e24ea29240a4a585e62d05fbab831cb7aef5f","schema_version":"1.0","event_id":"sha256:31b11b7bf3b9d6969f056679f94e24ea29240a4a585e62d05fbab831cb7aef5f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:2FBQVSHTSULFHP5QFITBPNYR3F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"H2O masers in a jet-driven bowshock: Episodic ejection from a massive young stellar object","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"K. Sunada, R. A. Burns, T. Handa, T. Nagayama, T. Omodaka","submitted_at":"2016-04-19T18:20:34Z","abstract_excerpt":"We report the results of VERA multi-epoch VLBI 22 GHz water maser observations of S255IR-SMA1, a massive young stellar object located in the S255 star forming region. By annual parallax the source distance was measured as D = 1.78 +-0.12 kpc and the source systemic motion was (u alpha cos d, u d) = (-0.13 +- 0.20, -0.06 +- 0.27) mas yr-1. Masers appear to trace a U-shaped bow shock whose morphology and proper motions are well reproduced by a jet-driven outflow model with a jet radius of about 6 AU. The maser data, in the context of other works in the literature, reveal ejections from S255IR-SM"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.05682","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":"2026-05-18T01:16:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2Xv7zSO+7j0sq4yHL7mTCymNzF+c6GCdZeg7cCrtFJ3RLOYcUoJ7vCnIDTQasXUKoCcTK5GZ/RRhPKP3rJXfDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T00:06:02.660168Z"},"content_sha256":"a16981710a743c2ea7787fb89c14931175ec4a7047c5a18934c5745ba45f0df5","schema_version":"1.0","event_id":"sha256:a16981710a743c2ea7787fb89c14931175ec4a7047c5a18934c5745ba45f0df5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2FBQVSHTSULFHP5QFITBPNYR3F/bundle.json","state_url":"https://pith.science/pith/2FBQVSHTSULFHP5QFITBPNYR3F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2FBQVSHTSULFHP5QFITBPNYR3F/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":"2026-05-30T00:06:02Z","links":{"resolver":"https://pith.science/pith/2FBQVSHTSULFHP5QFITBPNYR3F","bundle":"https://pith.science/pith/2FBQVSHTSULFHP5QFITBPNYR3F/bundle.json","state":"https://pith.science/pith/2FBQVSHTSULFHP5QFITBPNYR3F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2FBQVSHTSULFHP5QFITBPNYR3F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:2FBQVSHTSULFHP5QFITBPNYR3F","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":"05d2fd0d26cf0eeeba7be031044c87d30fc95a172c1fb153748ce18e34738dc0","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-19T18:20:34Z","title_canon_sha256":"58f656237fc6142df701b0b73ef027a8b36e25f3d6d16df059f5fd63ab3ebf3e"},"schema_version":"1.0","source":{"id":"1604.05682","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.05682","created_at":"2026-05-18T01:16:12Z"},{"alias_kind":"arxiv_version","alias_value":"1604.05682v1","created_at":"2026-05-18T01:16:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.05682","created_at":"2026-05-18T01:16:12Z"},{"alias_kind":"pith_short_12","alias_value":"2FBQVSHTSULF","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2FBQVSHTSULFHP5Q","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2FBQVSHT","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:a16981710a743c2ea7787fb89c14931175ec4a7047c5a18934c5745ba45f0df5","target":"graph","created_at":"2026-05-18T01:16:12Z","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 results of VERA multi-epoch VLBI 22 GHz water maser observations of S255IR-SMA1, a massive young stellar object located in the S255 star forming region. By annual parallax the source distance was measured as D = 1.78 +-0.12 kpc and the source systemic motion was (u alpha cos d, u d) = (-0.13 +- 0.20, -0.06 +- 0.27) mas yr-1. Masers appear to trace a U-shaped bow shock whose morphology and proper motions are well reproduced by a jet-driven outflow model with a jet radius of about 6 AU. The maser data, in the context of other works in the literature, reveal ejections from S255IR-SM","authors_text":"K. Sunada, R. A. Burns, T. Handa, T. Nagayama, T. Omodaka","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-19T18:20:34Z","title":"H2O masers in a jet-driven bowshock: Episodic ejection from a massive young stellar object"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.05682","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":"sha256:31b11b7bf3b9d6969f056679f94e24ea29240a4a585e62d05fbab831cb7aef5f","target":"record","created_at":"2026-05-18T01:16:12Z","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":"05d2fd0d26cf0eeeba7be031044c87d30fc95a172c1fb153748ce18e34738dc0","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-19T18:20:34Z","title_canon_sha256":"58f656237fc6142df701b0b73ef027a8b36e25f3d6d16df059f5fd63ab3ebf3e"},"schema_version":"1.0","source":{"id":"1604.05682","kind":"arxiv","version":1}},"canonical_sha256":"d1430ac8f3951653bfb02a2617b711d9741f128a0bbe27e469099667f4e0b414","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d1430ac8f3951653bfb02a2617b711d9741f128a0bbe27e469099667f4e0b414","first_computed_at":"2026-05-18T01:16:12.679713Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:12.679713Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5tz2mgZ3Z35D5V/kPB9iHk12ohsi09iV1HCA5LxzB8j7xYUPJ4DAsn+mi8muT4BwJfMra9aI9z0+TYIuaUqeAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:12.680405Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.05682","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:31b11b7bf3b9d6969f056679f94e24ea29240a4a585e62d05fbab831cb7aef5f","sha256:a16981710a743c2ea7787fb89c14931175ec4a7047c5a18934c5745ba45f0df5"],"state_sha256":"f9c487e3873063eeb3e1a0e3e47dd0a49a2846a38784f946884b663edcfdcdc9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MrvLQffHupybs0iLGtAPodjHPGWSuB4gw9u/RHxH7AfYzIZYzmElaWiEg6ze9FP8HDGLcp91+ZiVamcZdq1aCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T00:06:02.662298Z","bundle_sha256":"55616f6f816762d7398c34f9ef6c2551b90f11a30a2c98f3756c7e0def0b05e5"}}