{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:C63ZPSA4CUHX25Q7PTWL2TN2I4","short_pith_number":"pith:C63ZPSA4","canonical_record":{"source":{"id":"1006.5250","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-06-28T01:05:07Z","cross_cats_sorted":[],"title_canon_sha256":"84b33ecae06c3fe506732a2bf49c0f25ae53edb091438e0433524c597a7e600c","abstract_canon_sha256":"f961ba35cd062cf7d5963988b07f73cd868bf3a5c265f9aee6698b47c42d062e"},"schema_version":"1.0"},"canonical_sha256":"17b797c81c150f7d761f7cecbd4dba473de83b45174da5837f891d601796b77b","source":{"kind":"arxiv","id":"1006.5250","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.5250","created_at":"2026-05-18T02:06:35Z"},{"alias_kind":"arxiv_version","alias_value":"1006.5250v1","created_at":"2026-05-18T02:06:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.5250","created_at":"2026-05-18T02:06:35Z"},{"alias_kind":"pith_short_12","alias_value":"C63ZPSA4CUHX","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_16","alias_value":"C63ZPSA4CUHX25Q7","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_8","alias_value":"C63ZPSA4","created_at":"2026-05-18T12:26:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:C63ZPSA4CUHX25Q7PTWL2TN2I4","target":"record","payload":{"canonical_record":{"source":{"id":"1006.5250","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-06-28T01:05:07Z","cross_cats_sorted":[],"title_canon_sha256":"84b33ecae06c3fe506732a2bf49c0f25ae53edb091438e0433524c597a7e600c","abstract_canon_sha256":"f961ba35cd062cf7d5963988b07f73cd868bf3a5c265f9aee6698b47c42d062e"},"schema_version":"1.0"},"canonical_sha256":"17b797c81c150f7d761f7cecbd4dba473de83b45174da5837f891d601796b77b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:35.064169Z","signature_b64":"h3QdytAeo4cbygOH6KnIhyAfVchtvdd0sQ0L2GvAYUmrwtQ1pDNcFLkeYxLBc4S4y2yL69uRoZgrRV8r0sSuCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"17b797c81c150f7d761f7cecbd4dba473de83b45174da5837f891d601796b77b","last_reissued_at":"2026-05-18T02:06:35.063498Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:35.063498Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1006.5250","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":"2026-05-18T02:06:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+5BPiTsJ8SOOoesPvFyIA2UVMdAT/2mERsA2wsUhKbU2AAjsHh8LATwghiGAQInHU702UizhauqNbodVERlkBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T01:21:48.233890Z"},"content_sha256":"516314094e516bddfa884223597293f38ad5236bd5ae1825536bbb3d5b11c160","schema_version":"1.0","event_id":"sha256:516314094e516bddfa884223597293f38ad5236bd5ae1825536bbb3d5b11c160"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:C63ZPSA4CUHX25Q7PTWL2TN2I4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Primordial Origin Model of Magnetic Fields in Spiral Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Mami Machida, Takahiro Kudoh, Yoshiaki SOFUE","submitted_at":"2010-06-28T01:05:07Z","abstract_excerpt":"We propose a primordial-origin model for the composite configurations of global magnetic fields in spiral galaxies. We show that uniform tilted magnetic field wound up into a rotating disk galaxy can evolve into composite magnetic configurations comprising bisymmetric spiral (S=BSS), axisymmetric spiral (A=ASS), plane-reversed spiral (PR), and/or ring (R) fields in the disk, and vertical (V) fields in the center. By MHD simulations we show that these composite galactic fields are indeed created from weak primordial uniform field, and that the different configurations can co-exist in the same g"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.5250","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":"2026-05-18T02:06:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0shJS59ijXuDSNNzoSI9p7kE82xaVHCHLhJKgnJoTDPo41eEONj0fet5FjbrNWW9kjmheHqNtvKC+aghAyPJDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T01:21:48.234241Z"},"content_sha256":"55563ef0261c594974ef7c7e99b7fa407346e9e974e7fc3f5f44293f5380de10","schema_version":"1.0","event_id":"sha256:55563ef0261c594974ef7c7e99b7fa407346e9e974e7fc3f5f44293f5380de10"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C63ZPSA4CUHX25Q7PTWL2TN2I4/bundle.json","state_url":"https://pith.science/pith/C63ZPSA4CUHX25Q7PTWL2TN2I4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C63ZPSA4CUHX25Q7PTWL2TN2I4/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":"2026-06-02T01:21:48Z","links":{"resolver":"https://pith.science/pith/C63ZPSA4CUHX25Q7PTWL2TN2I4","bundle":"https://pith.science/pith/C63ZPSA4CUHX25Q7PTWL2TN2I4/bundle.json","state":"https://pith.science/pith/C63ZPSA4CUHX25Q7PTWL2TN2I4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C63ZPSA4CUHX25Q7PTWL2TN2I4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:C63ZPSA4CUHX25Q7PTWL2TN2I4","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":"f961ba35cd062cf7d5963988b07f73cd868bf3a5c265f9aee6698b47c42d062e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-06-28T01:05:07Z","title_canon_sha256":"84b33ecae06c3fe506732a2bf49c0f25ae53edb091438e0433524c597a7e600c"},"schema_version":"1.0","source":{"id":"1006.5250","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.5250","created_at":"2026-05-18T02:06:35Z"},{"alias_kind":"arxiv_version","alias_value":"1006.5250v1","created_at":"2026-05-18T02:06:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.5250","created_at":"2026-05-18T02:06:35Z"},{"alias_kind":"pith_short_12","alias_value":"C63ZPSA4CUHX","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_16","alias_value":"C63ZPSA4CUHX25Q7","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_8","alias_value":"C63ZPSA4","created_at":"2026-05-18T12:26:05Z"}],"graph_snapshots":[{"event_id":"sha256:55563ef0261c594974ef7c7e99b7fa407346e9e974e7fc3f5f44293f5380de10","target":"graph","created_at":"2026-05-18T02:06:35Z","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 propose a primordial-origin model for the composite configurations of global magnetic fields in spiral galaxies. We show that uniform tilted magnetic field wound up into a rotating disk galaxy can evolve into composite magnetic configurations comprising bisymmetric spiral (S=BSS), axisymmetric spiral (A=ASS), plane-reversed spiral (PR), and/or ring (R) fields in the disk, and vertical (V) fields in the center. By MHD simulations we show that these composite galactic fields are indeed created from weak primordial uniform field, and that the different configurations can co-exist in the same g","authors_text":"Mami Machida, Takahiro Kudoh, Yoshiaki SOFUE","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-06-28T01:05:07Z","title":"The Primordial Origin Model of Magnetic Fields in Spiral Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.5250","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":"sha256:516314094e516bddfa884223597293f38ad5236bd5ae1825536bbb3d5b11c160","target":"record","created_at":"2026-05-18T02:06:35Z","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":"f961ba35cd062cf7d5963988b07f73cd868bf3a5c265f9aee6698b47c42d062e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-06-28T01:05:07Z","title_canon_sha256":"84b33ecae06c3fe506732a2bf49c0f25ae53edb091438e0433524c597a7e600c"},"schema_version":"1.0","source":{"id":"1006.5250","kind":"arxiv","version":1}},"canonical_sha256":"17b797c81c150f7d761f7cecbd4dba473de83b45174da5837f891d601796b77b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"17b797c81c150f7d761f7cecbd4dba473de83b45174da5837f891d601796b77b","first_computed_at":"2026-05-18T02:06:35.063498Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:06:35.063498Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h3QdytAeo4cbygOH6KnIhyAfVchtvdd0sQ0L2GvAYUmrwtQ1pDNcFLkeYxLBc4S4y2yL69uRoZgrRV8r0sSuCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:06:35.064169Z","signed_message":"canonical_sha256_bytes"},"source_id":"1006.5250","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:516314094e516bddfa884223597293f38ad5236bd5ae1825536bbb3d5b11c160","sha256:55563ef0261c594974ef7c7e99b7fa407346e9e974e7fc3f5f44293f5380de10"],"state_sha256":"aa659a5f692c5c7b3bf1c528f159c1c5eafb2b558faf0801dc5047d1ec21eba3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KjzCqtHUKaYnQ4Cviq6Mq/OTXI9sLDDppLC1NQRtuqemaEDZW06ny+8uUej1w0l0/X+6kNer3RdwHYM5uV1eAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T01:21:48.236256Z","bundle_sha256":"6895077faf6ec5f6d16e8ea22fab9ccc2e35e69ccad5be829c290c3373ff7ccf"}}