{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:EXH4EYKAGAGUMKZJOR7QJV36HG","short_pith_number":"pith:EXH4EYKA","canonical_record":{"source":{"id":"1301.2337","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-01-10T21:33:59Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"7a898fcfdfdf06185c30d7ce5825ca5b59f2132ac966cad81e5255c4cd6dc824","abstract_canon_sha256":"85bbc0fe6c091b85b3e3478fb9d60b19c94f8c9a3e3444441b5475a89bfb286b"},"schema_version":"1.0"},"canonical_sha256":"25cfc26140300d462b29747f04d77e39aa7da022020a12541846655a8697f4ba","source":{"kind":"arxiv","id":"1301.2337","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.2337","created_at":"2026-05-18T03:20:45Z"},{"alias_kind":"arxiv_version","alias_value":"1301.2337v1","created_at":"2026-05-18T03:20:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.2337","created_at":"2026-05-18T03:20:45Z"},{"alias_kind":"pith_short_12","alias_value":"EXH4EYKAGAGU","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"EXH4EYKAGAGUMKZJ","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"EXH4EYKA","created_at":"2026-05-18T12:27:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:EXH4EYKAGAGUMKZJOR7QJV36HG","target":"record","payload":{"canonical_record":{"source":{"id":"1301.2337","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-01-10T21:33:59Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"7a898fcfdfdf06185c30d7ce5825ca5b59f2132ac966cad81e5255c4cd6dc824","abstract_canon_sha256":"85bbc0fe6c091b85b3e3478fb9d60b19c94f8c9a3e3444441b5475a89bfb286b"},"schema_version":"1.0"},"canonical_sha256":"25cfc26140300d462b29747f04d77e39aa7da022020a12541846655a8697f4ba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:20:45.218012Z","signature_b64":"GpaaxpsrOmmYRNVRHcqQM2e6wcxrV2QD+/7z3+KyctS+rT9wGIsXOxoAtDZskEg6IURB5r1/chOx7N/Y7rGBAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"25cfc26140300d462b29747f04d77e39aa7da022020a12541846655a8697f4ba","last_reissued_at":"2026-05-18T03:20:45.217403Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:20:45.217403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1301.2337","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":"2026-05-18T03:20:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mEDeHumxXV1eJuGqDQDgPu9qcfemjE/meGHw1lvFaxUhB/b9mT7Pa0IXjmnetXGxv3dGBd0aOFwj8kt/LR/IDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T11:02:46.741069Z"},"content_sha256":"61cff77a7a4a8277c6162a3ae9d46c69f70aa955c45dd3320d727d039491145b","schema_version":"1.0","event_id":"sha256:61cff77a7a4a8277c6162a3ae9d46c69f70aa955c45dd3320d727d039491145b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:EXH4EYKAGAGUMKZJOR7QJV36HG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Type I planet migration in weakly magnetised laminar discs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Clement Baruteau, Jerome Guilet, John C. B. Papaloizou","submitted_at":"2013-01-10T21:33:59Z","abstract_excerpt":"[Abridged] The migration of low mass planets has been studied in hydrodynamical disc models for more than three decades, but the impact of a magnetic field in the protoplanetary disc is less known. When the disc's magnetic field is strong enough to prevent horseshoe motion, the corotation torque is replaced by a torque arising from magnetic resonances. For weak enough magnetic fields, horseshoe motion and a corotation torque exist, and recent turbulent MHD simulations have reported the existence of a new component of the corotation torque in the presence of a mean toroidal field. The aim of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.2337","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":"2026-05-18T03:20:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"53n/2UQmlHQ0PDQIQLOJP5RTtRYkthjHDZfOMNRUequx7BaLu+02xrm1d/YcYRrcPvalGXJ8cFxzIeNHp5HGCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T11:02:46.741418Z"},"content_sha256":"c94c14d7c4d68158b7eec93f488fcecc0ac372fea6455fd5babe39663af37c9b","schema_version":"1.0","event_id":"sha256:c94c14d7c4d68158b7eec93f488fcecc0ac372fea6455fd5babe39663af37c9b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EXH4EYKAGAGUMKZJOR7QJV36HG/bundle.json","state_url":"https://pith.science/pith/EXH4EYKAGAGUMKZJOR7QJV36HG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EXH4EYKAGAGUMKZJOR7QJV36HG/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":"2026-06-05T11:02:46Z","links":{"resolver":"https://pith.science/pith/EXH4EYKAGAGUMKZJOR7QJV36HG","bundle":"https://pith.science/pith/EXH4EYKAGAGUMKZJOR7QJV36HG/bundle.json","state":"https://pith.science/pith/EXH4EYKAGAGUMKZJOR7QJV36HG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EXH4EYKAGAGUMKZJOR7QJV36HG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:EXH4EYKAGAGUMKZJOR7QJV36HG","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":"85bbc0fe6c091b85b3e3478fb9d60b19c94f8c9a3e3444441b5475a89bfb286b","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-01-10T21:33:59Z","title_canon_sha256":"7a898fcfdfdf06185c30d7ce5825ca5b59f2132ac966cad81e5255c4cd6dc824"},"schema_version":"1.0","source":{"id":"1301.2337","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.2337","created_at":"2026-05-18T03:20:45Z"},{"alias_kind":"arxiv_version","alias_value":"1301.2337v1","created_at":"2026-05-18T03:20:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.2337","created_at":"2026-05-18T03:20:45Z"},{"alias_kind":"pith_short_12","alias_value":"EXH4EYKAGAGU","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"EXH4EYKAGAGUMKZJ","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"EXH4EYKA","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:c94c14d7c4d68158b7eec93f488fcecc0ac372fea6455fd5babe39663af37c9b","target":"graph","created_at":"2026-05-18T03:20:45Z","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":"[Abridged] The migration of low mass planets has been studied in hydrodynamical disc models for more than three decades, but the impact of a magnetic field in the protoplanetary disc is less known. When the disc's magnetic field is strong enough to prevent horseshoe motion, the corotation torque is replaced by a torque arising from magnetic resonances. For weak enough magnetic fields, horseshoe motion and a corotation torque exist, and recent turbulent MHD simulations have reported the existence of a new component of the corotation torque in the presence of a mean toroidal field. The aim of th","authors_text":"Clement Baruteau, Jerome Guilet, John C. B. Papaloizou","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-01-10T21:33:59Z","title":"Type I planet migration in weakly magnetised laminar discs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.2337","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":"sha256:61cff77a7a4a8277c6162a3ae9d46c69f70aa955c45dd3320d727d039491145b","target":"record","created_at":"2026-05-18T03:20:45Z","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":"85bbc0fe6c091b85b3e3478fb9d60b19c94f8c9a3e3444441b5475a89bfb286b","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-01-10T21:33:59Z","title_canon_sha256":"7a898fcfdfdf06185c30d7ce5825ca5b59f2132ac966cad81e5255c4cd6dc824"},"schema_version":"1.0","source":{"id":"1301.2337","kind":"arxiv","version":1}},"canonical_sha256":"25cfc26140300d462b29747f04d77e39aa7da022020a12541846655a8697f4ba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25cfc26140300d462b29747f04d77e39aa7da022020a12541846655a8697f4ba","first_computed_at":"2026-05-18T03:20:45.217403Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:20:45.217403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GpaaxpsrOmmYRNVRHcqQM2e6wcxrV2QD+/7z3+KyctS+rT9wGIsXOxoAtDZskEg6IURB5r1/chOx7N/Y7rGBAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:20:45.218012Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.2337","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:61cff77a7a4a8277c6162a3ae9d46c69f70aa955c45dd3320d727d039491145b","sha256:c94c14d7c4d68158b7eec93f488fcecc0ac372fea6455fd5babe39663af37c9b"],"state_sha256":"de3c235f47ee06599b0f55a6cc6116940437ebc68e898269fbbf6318c7bf114a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jpX12II3CHxt4lIzSnFs1QuC1tv/NVk4cGnB2Q7OWDIvvOwA0KyvDOcyi+sQ9kgLGrRmV43O5Hq0l2Yjg/1HAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T11:02:46.743338Z","bundle_sha256":"066d6158e6e290ffa44314c6960800f36fad3f25f9e85eba2e3f7c4bfe301d5e"}}