{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:O4MKBR6DWORULOTHCNBNRDFFY7","short_pith_number":"pith:O4MKBR6D","canonical_record":{"source":{"id":"1801.08958","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-01-26T19:51:08Z","cross_cats_sorted":[],"title_canon_sha256":"be654033a24bf0530d8b552015312294aa4093c7aefcfddd5ccc316e7ef24d7b","abstract_canon_sha256":"8ecec94d131ca6705b8fd95e3060b9d354439d9f3ce66c373c39dfc2c528d186"},"schema_version":"1.0"},"canonical_sha256":"7718a0c7c3b3a345ba671342d88ca5c7ed67711bb7ba7325f120ba252508f958","source":{"kind":"arxiv","id":"1801.08958","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.08958","created_at":"2026-05-18T00:10:38Z"},{"alias_kind":"arxiv_version","alias_value":"1801.08958v1","created_at":"2026-05-18T00:10:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.08958","created_at":"2026-05-18T00:10:38Z"},{"alias_kind":"pith_short_12","alias_value":"O4MKBR6DWORU","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"O4MKBR6DWORULOTH","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"O4MKBR6D","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:O4MKBR6DWORULOTHCNBNRDFFY7","target":"record","payload":{"canonical_record":{"source":{"id":"1801.08958","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-01-26T19:51:08Z","cross_cats_sorted":[],"title_canon_sha256":"be654033a24bf0530d8b552015312294aa4093c7aefcfddd5ccc316e7ef24d7b","abstract_canon_sha256":"8ecec94d131ca6705b8fd95e3060b9d354439d9f3ce66c373c39dfc2c528d186"},"schema_version":"1.0"},"canonical_sha256":"7718a0c7c3b3a345ba671342d88ca5c7ed67711bb7ba7325f120ba252508f958","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:10:38.568261Z","signature_b64":"BseBmvM/ltNiiskzoUghER3/19UWOQ38Seq7WMBrDeyCQyfXGzl8OxW5VprHU/u+vgnRCAUrcUlVAx/Y0Ou0AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7718a0c7c3b3a345ba671342d88ca5c7ed67711bb7ba7325f120ba252508f958","last_reissued_at":"2026-05-18T00:10:38.567735Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:10:38.567735Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.08958","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":"2026-05-18T00:10:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M5uP5ljZ+EV63Idg3dI8vJ5ISE+FhNfqiSk1p8XNtfTuAgWq+1olMhHRlFYhW3I02/XDBJkFqeRmBFdkQfq2CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T04:27:43.298129Z"},"content_sha256":"26b1fb92d0d5124d9088ac5a2ebf6ce9b85f3462b00cd070c09bd68238b66d79","schema_version":"1.0","event_id":"sha256:26b1fb92d0d5124d9088ac5a2ebf6ce9b85f3462b00cd070c09bd68238b66d79"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:O4MKBR6DWORULOTHCNBNRDFFY7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The ionizing source of the bipolar HII region S106: a close massive binary","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A.A. Djupvik, C. Schnugg, F. Comer\\'on, N. Schneider","submitted_at":"2018-01-26T19:51:08Z","abstract_excerpt":"S106 is one of the best known bipolar HII regions, thoroughly studied and modelled at infrared, submillimeter and millimeter wavelengths, and it is one of the nearest examples of the late stages of massive star formation in which the newly formed star that ionizes it is still surrounded by vast amounts of gas and dust. However, little is known about its heavily obscured central source, S106IR. The possible binarity of the central source is investigated, which is considered to be likely given the high binarity fraction among massive stars. We have carried out visible and near-infrared photometr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.08958","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":"2026-05-18T00:10:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zqbFperI7efM4X41IV0a3Bn8WK/ghbbSC7Lq9xb4Mp+zAbj6G00+m6cG8iqGFMfzrVE1+J8OESrq+jx1NGqvAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T04:27:43.298561Z"},"content_sha256":"7abb8e8e784b013de8907d41b52f44fb2f65aa26fbad8d42c9f5efec0dea28e4","schema_version":"1.0","event_id":"sha256:7abb8e8e784b013de8907d41b52f44fb2f65aa26fbad8d42c9f5efec0dea28e4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O4MKBR6DWORULOTHCNBNRDFFY7/bundle.json","state_url":"https://pith.science/pith/O4MKBR6DWORULOTHCNBNRDFFY7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O4MKBR6DWORULOTHCNBNRDFFY7/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":"2026-08-04T04:27:43Z","links":{"resolver":"https://pith.science/pith/O4MKBR6DWORULOTHCNBNRDFFY7","bundle":"https://pith.science/pith/O4MKBR6DWORULOTHCNBNRDFFY7/bundle.json","state":"https://pith.science/pith/O4MKBR6DWORULOTHCNBNRDFFY7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O4MKBR6DWORULOTHCNBNRDFFY7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:O4MKBR6DWORULOTHCNBNRDFFY7","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":"8ecec94d131ca6705b8fd95e3060b9d354439d9f3ce66c373c39dfc2c528d186","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-01-26T19:51:08Z","title_canon_sha256":"be654033a24bf0530d8b552015312294aa4093c7aefcfddd5ccc316e7ef24d7b"},"schema_version":"1.0","source":{"id":"1801.08958","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.08958","created_at":"2026-05-18T00:10:38Z"},{"alias_kind":"arxiv_version","alias_value":"1801.08958v1","created_at":"2026-05-18T00:10:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.08958","created_at":"2026-05-18T00:10:38Z"},{"alias_kind":"pith_short_12","alias_value":"O4MKBR6DWORU","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"O4MKBR6DWORULOTH","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"O4MKBR6D","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:7abb8e8e784b013de8907d41b52f44fb2f65aa26fbad8d42c9f5efec0dea28e4","target":"graph","created_at":"2026-05-18T00:10:38Z","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":"S106 is one of the best known bipolar HII regions, thoroughly studied and modelled at infrared, submillimeter and millimeter wavelengths, and it is one of the nearest examples of the late stages of massive star formation in which the newly formed star that ionizes it is still surrounded by vast amounts of gas and dust. However, little is known about its heavily obscured central source, S106IR. The possible binarity of the central source is investigated, which is considered to be likely given the high binarity fraction among massive stars. We have carried out visible and near-infrared photometr","authors_text":"A.A. Djupvik, C. Schnugg, F. Comer\\'on, N. Schneider","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-01-26T19:51:08Z","title":"The ionizing source of the bipolar HII region S106: a close massive binary"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.08958","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":"sha256:26b1fb92d0d5124d9088ac5a2ebf6ce9b85f3462b00cd070c09bd68238b66d79","target":"record","created_at":"2026-05-18T00:10:38Z","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":"8ecec94d131ca6705b8fd95e3060b9d354439d9f3ce66c373c39dfc2c528d186","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-01-26T19:51:08Z","title_canon_sha256":"be654033a24bf0530d8b552015312294aa4093c7aefcfddd5ccc316e7ef24d7b"},"schema_version":"1.0","source":{"id":"1801.08958","kind":"arxiv","version":1}},"canonical_sha256":"7718a0c7c3b3a345ba671342d88ca5c7ed67711bb7ba7325f120ba252508f958","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7718a0c7c3b3a345ba671342d88ca5c7ed67711bb7ba7325f120ba252508f958","first_computed_at":"2026-05-18T00:10:38.567735Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:38.567735Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BseBmvM/ltNiiskzoUghER3/19UWOQ38Seq7WMBrDeyCQyfXGzl8OxW5VprHU/u+vgnRCAUrcUlVAx/Y0Ou0AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:38.568261Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.08958","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:26b1fb92d0d5124d9088ac5a2ebf6ce9b85f3462b00cd070c09bd68238b66d79","sha256:7abb8e8e784b013de8907d41b52f44fb2f65aa26fbad8d42c9f5efec0dea28e4"],"state_sha256":"392aae0cbab9302b9be480a5c38b629c7d7982780f50319b714d58147b94ecb7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+Px2qy0kVuQqZWQArteM/HfY3RFtw9m2A5OlvMhirhSDiFGH175SV9ftfTNGIBpLLeR1CqwG2JE9bUmcDrFZAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T04:27:43.303814Z","bundle_sha256":"0360cacad40e224409ce11f2d6ecd8913a0e04f477d7ec9542011b08df8cc438"}}