{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:ZQ4FV6OTZF7EMDXYYYGEBKV4OG","short_pith_number":"pith:ZQ4FV6OT","canonical_record":{"source":{"id":"1007.3312","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-20T00:12:24Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"215c30119c39fff60e865856f335507716e280a435cb0cf6563a4a18f88a6b1e","abstract_canon_sha256":"4fc03ef3bec674088e6628366a0aa96642be35ece273542bf68374e627448054"},"schema_version":"1.0"},"canonical_sha256":"cc385af9d3c97e460ef8c60c40aabc7190ac1caf2cd5ee64e0764eb580f34263","source":{"kind":"arxiv","id":"1007.3312","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.3312","created_at":"2026-05-18T02:06:12Z"},{"alias_kind":"arxiv_version","alias_value":"1007.3312v2","created_at":"2026-05-18T02:06:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.3312","created_at":"2026-05-18T02:06:12Z"},{"alias_kind":"pith_short_12","alias_value":"ZQ4FV6OTZF7E","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"ZQ4FV6OTZF7EMDXY","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"ZQ4FV6OT","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:ZQ4FV6OTZF7EMDXYYYGEBKV4OG","target":"record","payload":{"canonical_record":{"source":{"id":"1007.3312","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-20T00:12:24Z","cross_cats_sorted":["physics.plasm-ph"],"title_canon_sha256":"215c30119c39fff60e865856f335507716e280a435cb0cf6563a4a18f88a6b1e","abstract_canon_sha256":"4fc03ef3bec674088e6628366a0aa96642be35ece273542bf68374e627448054"},"schema_version":"1.0"},"canonical_sha256":"cc385af9d3c97e460ef8c60c40aabc7190ac1caf2cd5ee64e0764eb580f34263","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:12.635846Z","signature_b64":"BHvuMVbxp6+Bv6mgj5u1yaRfASdrKWzfDbMy+0TSj58dKlWZPBIZtRRLeO7GuOBD4P8VgiJYVR1Qsm38L4CvBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cc385af9d3c97e460ef8c60c40aabc7190ac1caf2cd5ee64e0764eb580f34263","last_reissued_at":"2026-05-18T02:06:12.634948Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:12.634948Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1007.3312","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:06:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VVcHJ8zPTMPd7IzjC8jZh7nOfZ4tCkSZlRN+oehcyamwb2hyeuLhzOJWBD5MJG+Knw3qGyo8XmtoqHj76RxyCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:03:45.709098Z"},"content_sha256":"ecc1157c25ccacd18b573d3b7ea15d62b3fc41ddf43b0a48ed3e71a87de76b94","schema_version":"1.0","event_id":"sha256:ecc1157c25ccacd18b573d3b7ea15d62b3fc41ddf43b0a48ed3e71a87de76b94"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:ZQ4FV6OTZF7EMDXYYYGEBKV4OG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evidence for Dynamically Important Magnetic Fields in Molecular Clouds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.plasm-ph"],"primary_cat":"astro-ph.GA","authors_text":"Abigail Hedden, Edward Tong, Hua-bai Li, Jonathan Kawamura, Raymond Blundell, Scott Paine","submitted_at":"2010-07-20T00:12:24Z","abstract_excerpt":"Recent observational evidence that magnetic fields are dynamically important in molecular clouds, compared to self-gravity and turbulence, is reviewed and illustrated with data from the NGC 2024 region. One piece of evidence, turbulence anisotropy, was found in the diffuse envelope of a cloud (Av~1; Heyer et al. 2008); our data further suggests turbulence anisotropy in the cloud (Av >7) and even near the cloud core (Av~100). The data also shows that magnetic fields can channel gravitational contraction even for a region with super-critical N(H2)/2Blos ratio (the ratio between the observed colu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.3312","kind":"arxiv","version":2},"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":"2026-05-18T02:06:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yFQsHHHQWROhynM+gmm9sI26/v2LdFY9mrbidy1w2rWnyFRQgs7tjp+QzbdqCjPWUilTU71WCVupoQqYeGOUBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:03:45.709782Z"},"content_sha256":"e1c64954d65aba3c78e022e6beb05ddb630e334b04b1af39a7e5a127779f11d0","schema_version":"1.0","event_id":"sha256:e1c64954d65aba3c78e022e6beb05ddb630e334b04b1af39a7e5a127779f11d0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZQ4FV6OTZF7EMDXYYYGEBKV4OG/bundle.json","state_url":"https://pith.science/pith/ZQ4FV6OTZF7EMDXYYYGEBKV4OG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZQ4FV6OTZF7EMDXYYYGEBKV4OG/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":"2026-05-28T00:03:45Z","links":{"resolver":"https://pith.science/pith/ZQ4FV6OTZF7EMDXYYYGEBKV4OG","bundle":"https://pith.science/pith/ZQ4FV6OTZF7EMDXYYYGEBKV4OG/bundle.json","state":"https://pith.science/pith/ZQ4FV6OTZF7EMDXYYYGEBKV4OG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZQ4FV6OTZF7EMDXYYYGEBKV4OG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:ZQ4FV6OTZF7EMDXYYYGEBKV4OG","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":"4fc03ef3bec674088e6628366a0aa96642be35ece273542bf68374e627448054","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-20T00:12:24Z","title_canon_sha256":"215c30119c39fff60e865856f335507716e280a435cb0cf6563a4a18f88a6b1e"},"schema_version":"1.0","source":{"id":"1007.3312","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.3312","created_at":"2026-05-18T02:06:12Z"},{"alias_kind":"arxiv_version","alias_value":"1007.3312v2","created_at":"2026-05-18T02:06:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.3312","created_at":"2026-05-18T02:06:12Z"},{"alias_kind":"pith_short_12","alias_value":"ZQ4FV6OTZF7E","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"ZQ4FV6OTZF7EMDXY","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"ZQ4FV6OT","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:e1c64954d65aba3c78e022e6beb05ddb630e334b04b1af39a7e5a127779f11d0","target":"graph","created_at":"2026-05-18T02:06:12Z","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":"Recent observational evidence that magnetic fields are dynamically important in molecular clouds, compared to self-gravity and turbulence, is reviewed and illustrated with data from the NGC 2024 region. One piece of evidence, turbulence anisotropy, was found in the diffuse envelope of a cloud (Av~1; Heyer et al. 2008); our data further suggests turbulence anisotropy in the cloud (Av >7) and even near the cloud core (Av~100). The data also shows that magnetic fields can channel gravitational contraction even for a region with super-critical N(H2)/2Blos ratio (the ratio between the observed colu","authors_text":"Abigail Hedden, Edward Tong, Hua-bai Li, Jonathan Kawamura, Raymond Blundell, Scott Paine","cross_cats":["physics.plasm-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-20T00:12:24Z","title":"Evidence for Dynamically Important Magnetic Fields in Molecular Clouds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.3312","kind":"arxiv","version":2},"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:ecc1157c25ccacd18b573d3b7ea15d62b3fc41ddf43b0a48ed3e71a87de76b94","target":"record","created_at":"2026-05-18T02:06:12Z","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":"4fc03ef3bec674088e6628366a0aa96642be35ece273542bf68374e627448054","cross_cats_sorted":["physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-07-20T00:12:24Z","title_canon_sha256":"215c30119c39fff60e865856f335507716e280a435cb0cf6563a4a18f88a6b1e"},"schema_version":"1.0","source":{"id":"1007.3312","kind":"arxiv","version":2}},"canonical_sha256":"cc385af9d3c97e460ef8c60c40aabc7190ac1caf2cd5ee64e0764eb580f34263","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc385af9d3c97e460ef8c60c40aabc7190ac1caf2cd5ee64e0764eb580f34263","first_computed_at":"2026-05-18T02:06:12.634948Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:06:12.634948Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BHvuMVbxp6+Bv6mgj5u1yaRfASdrKWzfDbMy+0TSj58dKlWZPBIZtRRLeO7GuOBD4P8VgiJYVR1Qsm38L4CvBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:06:12.635846Z","signed_message":"canonical_sha256_bytes"},"source_id":"1007.3312","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ecc1157c25ccacd18b573d3b7ea15d62b3fc41ddf43b0a48ed3e71a87de76b94","sha256:e1c64954d65aba3c78e022e6beb05ddb630e334b04b1af39a7e5a127779f11d0"],"state_sha256":"0319d3736ac87cbaadddae815c3a13b59a2d9aaa7e54a9bf8628016fb3822275"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Asu01Pzk+rrJgfr6KcYeX+wZJmsqMXujC5FC4kJ0tGQmC68BN9s3DifsG/imaS7OVGhtgL0jT/42OFnu9Ww8CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T00:03:45.713099Z","bundle_sha256":"f9a8a3817abc8f85c46e6fd6d5ea2054eb5a2f8698fcc6c63a3c2a76904780fb"}}