{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:I5JWMLIVAJTGAKV5Z7MNKD7SCY","short_pith_number":"pith:I5JWMLIV","canonical_record":{"source":{"id":"1605.04799","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-16T15:13:14Z","cross_cats_sorted":[],"title_canon_sha256":"8a994b7d48aa636db8c51499b473837a4c64b09229d5e629584eb9ec60d715eb","abstract_canon_sha256":"602cacc75914775ff30519a877cbc028b9a544b55b7d4f3714f33e5bbe9caa85"},"schema_version":"1.0"},"canonical_sha256":"4753662d150266602abdcfd8d50ff21607cecae7ef551f3817d972505f69fc37","source":{"kind":"arxiv","id":"1605.04799","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.04799","created_at":"2026-05-18T01:11:30Z"},{"alias_kind":"arxiv_version","alias_value":"1605.04799v1","created_at":"2026-05-18T01:11:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.04799","created_at":"2026-05-18T01:11:30Z"},{"alias_kind":"pith_short_12","alias_value":"I5JWMLIVAJTG","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"I5JWMLIVAJTGAKV5","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"I5JWMLIV","created_at":"2026-05-18T12:30:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:I5JWMLIVAJTGAKV5Z7MNKD7SCY","target":"record","payload":{"canonical_record":{"source":{"id":"1605.04799","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-16T15:13:14Z","cross_cats_sorted":[],"title_canon_sha256":"8a994b7d48aa636db8c51499b473837a4c64b09229d5e629584eb9ec60d715eb","abstract_canon_sha256":"602cacc75914775ff30519a877cbc028b9a544b55b7d4f3714f33e5bbe9caa85"},"schema_version":"1.0"},"canonical_sha256":"4753662d150266602abdcfd8d50ff21607cecae7ef551f3817d972505f69fc37","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:30.602776Z","signature_b64":"iEVJWfMHWZ2KI9c4nXexSw0nAiWhvpoz/yXoMFAYqb5d574KFE6ylr3TllUq7m0gBERdXhA7zLmfKN5wRCgUAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4753662d150266602abdcfd8d50ff21607cecae7ef551f3817d972505f69fc37","last_reissued_at":"2026-05-18T01:11:30.602309Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:30.602309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.04799","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":"2026-05-18T01:11:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CFNTkVhslwrXA3CvQ1PbRutALbWcP8p3KHKfnEaBEKxKofqb+j6PynYFIpzTAB0y23LHfXzGAvR2mRf+diNPAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T16:08:25.216348Z"},"content_sha256":"1fb1aaedd63d056324855b0c26abd4ec35cd76ad74fefa3760ef78cb424d1c22","schema_version":"1.0","event_id":"sha256:1fb1aaedd63d056324855b0c26abd4ec35cd76ad74fefa3760ef78cb424d1c22"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:I5JWMLIVAJTGAKV5Z7MNKD7SCY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Orion's Veil: Magnetic field strengths and other properties of a PDR in front of the Trapezium Cluster","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"C. L. Brogan, D. A. Roberts, R. M. Crutcher, T. H. Troland, W. M. Goss","submitted_at":"2016-05-16T15:13:14Z","abstract_excerpt":"We present an analysis of physical conditions in the Orion Veil, a largely atomic PDR that lies just in front (about 2 pc) of the Trapezium stars. We have obtained 21 cm HI and 18 cm OH VLA Zeeman effect data. These data yield images of the line-of-sight magnetic field strength Blos in atomic and molecular regions of the Veil. We find Blos is typically -50 to -75 microgauss in the atomic gas across much of the Veil (25\" resolution); Blos is -350 microgauss at one position in the molecular gas (40\" resolution). The Veil has two principal HI velocity components. Magnetic and kinematical data sug"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.04799","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":"2026-05-18T01:11:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xq+2sQ656Mh3ikm25UIov/kCH867thWAAXXvS39Do8W8E6u8nL3FAQl66n4sZXLQSjhrxrDAlxVHq+z46YbqAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T16:08:25.216702Z"},"content_sha256":"574310c2322a65eebccc1bdcff9907edde3c5d5975415e4d5bb451479e5ff9e0","schema_version":"1.0","event_id":"sha256:574310c2322a65eebccc1bdcff9907edde3c5d5975415e4d5bb451479e5ff9e0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I5JWMLIVAJTGAKV5Z7MNKD7SCY/bundle.json","state_url":"https://pith.science/pith/I5JWMLIVAJTGAKV5Z7MNKD7SCY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I5JWMLIVAJTGAKV5Z7MNKD7SCY/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":"2026-06-27T16:08:25Z","links":{"resolver":"https://pith.science/pith/I5JWMLIVAJTGAKV5Z7MNKD7SCY","bundle":"https://pith.science/pith/I5JWMLIVAJTGAKV5Z7MNKD7SCY/bundle.json","state":"https://pith.science/pith/I5JWMLIVAJTGAKV5Z7MNKD7SCY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I5JWMLIVAJTGAKV5Z7MNKD7SCY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:I5JWMLIVAJTGAKV5Z7MNKD7SCY","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":"602cacc75914775ff30519a877cbc028b9a544b55b7d4f3714f33e5bbe9caa85","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-16T15:13:14Z","title_canon_sha256":"8a994b7d48aa636db8c51499b473837a4c64b09229d5e629584eb9ec60d715eb"},"schema_version":"1.0","source":{"id":"1605.04799","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.04799","created_at":"2026-05-18T01:11:30Z"},{"alias_kind":"arxiv_version","alias_value":"1605.04799v1","created_at":"2026-05-18T01:11:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.04799","created_at":"2026-05-18T01:11:30Z"},{"alias_kind":"pith_short_12","alias_value":"I5JWMLIVAJTG","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"I5JWMLIVAJTGAKV5","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"I5JWMLIV","created_at":"2026-05-18T12:30:22Z"}],"graph_snapshots":[{"event_id":"sha256:574310c2322a65eebccc1bdcff9907edde3c5d5975415e4d5bb451479e5ff9e0","target":"graph","created_at":"2026-05-18T01:11:30Z","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 present an analysis of physical conditions in the Orion Veil, a largely atomic PDR that lies just in front (about 2 pc) of the Trapezium stars. We have obtained 21 cm HI and 18 cm OH VLA Zeeman effect data. These data yield images of the line-of-sight magnetic field strength Blos in atomic and molecular regions of the Veil. We find Blos is typically -50 to -75 microgauss in the atomic gas across much of the Veil (25\" resolution); Blos is -350 microgauss at one position in the molecular gas (40\" resolution). The Veil has two principal HI velocity components. Magnetic and kinematical data sug","authors_text":"C. L. Brogan, D. A. Roberts, R. M. Crutcher, T. H. Troland, W. M. Goss","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-16T15:13:14Z","title":"Orion's Veil: Magnetic field strengths and other properties of a PDR in front of the Trapezium Cluster"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.04799","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":"sha256:1fb1aaedd63d056324855b0c26abd4ec35cd76ad74fefa3760ef78cb424d1c22","target":"record","created_at":"2026-05-18T01:11:30Z","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":"602cacc75914775ff30519a877cbc028b9a544b55b7d4f3714f33e5bbe9caa85","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-16T15:13:14Z","title_canon_sha256":"8a994b7d48aa636db8c51499b473837a4c64b09229d5e629584eb9ec60d715eb"},"schema_version":"1.0","source":{"id":"1605.04799","kind":"arxiv","version":1}},"canonical_sha256":"4753662d150266602abdcfd8d50ff21607cecae7ef551f3817d972505f69fc37","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4753662d150266602abdcfd8d50ff21607cecae7ef551f3817d972505f69fc37","first_computed_at":"2026-05-18T01:11:30.602309Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:30.602309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iEVJWfMHWZ2KI9c4nXexSw0nAiWhvpoz/yXoMFAYqb5d574KFE6ylr3TllUq7m0gBERdXhA7zLmfKN5wRCgUAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:30.602776Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.04799","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1fb1aaedd63d056324855b0c26abd4ec35cd76ad74fefa3760ef78cb424d1c22","sha256:574310c2322a65eebccc1bdcff9907edde3c5d5975415e4d5bb451479e5ff9e0"],"state_sha256":"4623aabb7e0466aff9aee3a1d2d1a1d5f8113db2754c7164364447e26433b33c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"65JI0AeVvr4m9AgbFUKvo9mjnrNwAylQUtc/ywRAVef5A+193IbZ0TTfUwGmowUlL7OYkmX9gL+JI2EqdVNUDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T16:08:25.218578Z","bundle_sha256":"ae88e66e709a381cebe9434dccb30154ef8e2ae9e6812ba17110844a73b218fc"}}