{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:NQ57SDNVNHRKSKTNNLMSLAKLDJ","short_pith_number":"pith:NQ57SDNV","canonical_record":{"source":{"id":"1009.4930","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-09-24T20:00:02Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"0a5787d2e64b55f72fe9b0364ed1eef17ec9d2d4d59841fb4bff619e48b015db","abstract_canon_sha256":"e18f04c5689e4ec2892d81e19d0da2e4301ee348ebfbc5c5393e6882eb08fd0d"},"schema_version":"1.0"},"canonical_sha256":"6c3bf90db569e2a92a6d6ad925814b1a79d0c908c2af971183448ad8e2232ec0","source":{"kind":"arxiv","id":"1009.4930","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.4930","created_at":"2026-05-18T02:05:17Z"},{"alias_kind":"arxiv_version","alias_value":"1009.4930v3","created_at":"2026-05-18T02:05:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.4930","created_at":"2026-05-18T02:05:17Z"},{"alias_kind":"pith_short_12","alias_value":"NQ57SDNVNHRK","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"NQ57SDNVNHRKSKTN","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"NQ57SDNV","created_at":"2026-05-18T12:26:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:NQ57SDNVNHRKSKTNNLMSLAKLDJ","target":"record","payload":{"canonical_record":{"source":{"id":"1009.4930","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-09-24T20:00:02Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"0a5787d2e64b55f72fe9b0364ed1eef17ec9d2d4d59841fb4bff619e48b015db","abstract_canon_sha256":"e18f04c5689e4ec2892d81e19d0da2e4301ee348ebfbc5c5393e6882eb08fd0d"},"schema_version":"1.0"},"canonical_sha256":"6c3bf90db569e2a92a6d6ad925814b1a79d0c908c2af971183448ad8e2232ec0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:17.490028Z","signature_b64":"OkkLItZqjhaQbCN9zjws1luZybekGCfU2Ha9MlpGD6273yZtsATwY+3/+wjPehYKFlqId7g9kyjfGzCcsLLVCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c3bf90db569e2a92a6d6ad925814b1a79d0c908c2af971183448ad8e2232ec0","last_reissued_at":"2026-05-18T02:05:17.489297Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:17.489297Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1009.4930","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:05:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3u/KpExCXlFhjOMzIcS0JzoPPcDk/rr2PhWQyK7UOsSiNhhIq3rvdjMtGk4ukHwya1DAn45n8uG7VhZCFvKhAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T18:00:26.643209Z"},"content_sha256":"e6cd2440331e20baa094953036d2858df29311285480ab81d2bda551be2bd760","schema_version":"1.0","event_id":"sha256:e6cd2440331e20baa094953036d2858df29311285480ab81d2bda551be2bd760"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:NQ57SDNVNHRKSKTNNLMSLAKLDJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Surface Layer Accretion in Transitional and Conventional Disks: From Polycyclic Aromatic Hydrocarbons to Planets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.EP","authors_text":"Daniel Perez-Becker, Eugene Chiang (UC Berkeley)","submitted_at":"2010-09-24T20:00:02Z","abstract_excerpt":"Transitional T Tauri disks have optically thin holes with radii > 10 AU, yet accrete up to the median T Tauri rate. Multiple planets inside the hole can torque the gas to high radial speeds over large distances, reducing the local surface density while maintaining accretion. Thus multi-planet systems, together with reductions in disk opacity due to grain growth, can explain how holes can be simultaneously transparent and accreting. There remains the problem of how outer disk gas diffuses into the hole. Here it has been proposed that the magnetorotational instability (MRI) erodes disk surface l"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.4930","kind":"arxiv","version":3},"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":"2026-05-18T02:05:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aXiKCMxuaN5Z169gllMz3R1Cv2JdzHNFUcDfEKa0OjdQYa1TnvAXNLiXhx4FYUNCdXZgGDcojmPjuqPSu29aDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T18:00:26.643581Z"},"content_sha256":"5a469a0f8184c3fb45e984c06fb539c5dd6e1d8f4520b6c99972ccb4e78ba18f","schema_version":"1.0","event_id":"sha256:5a469a0f8184c3fb45e984c06fb539c5dd6e1d8f4520b6c99972ccb4e78ba18f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NQ57SDNVNHRKSKTNNLMSLAKLDJ/bundle.json","state_url":"https://pith.science/pith/NQ57SDNVNHRKSKTNNLMSLAKLDJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NQ57SDNVNHRKSKTNNLMSLAKLDJ/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":"2026-06-09T18:00:26Z","links":{"resolver":"https://pith.science/pith/NQ57SDNVNHRKSKTNNLMSLAKLDJ","bundle":"https://pith.science/pith/NQ57SDNVNHRKSKTNNLMSLAKLDJ/bundle.json","state":"https://pith.science/pith/NQ57SDNVNHRKSKTNNLMSLAKLDJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NQ57SDNVNHRKSKTNNLMSLAKLDJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:NQ57SDNVNHRKSKTNNLMSLAKLDJ","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":"e18f04c5689e4ec2892d81e19d0da2e4301ee348ebfbc5c5393e6882eb08fd0d","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-09-24T20:00:02Z","title_canon_sha256":"0a5787d2e64b55f72fe9b0364ed1eef17ec9d2d4d59841fb4bff619e48b015db"},"schema_version":"1.0","source":{"id":"1009.4930","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.4930","created_at":"2026-05-18T02:05:17Z"},{"alias_kind":"arxiv_version","alias_value":"1009.4930v3","created_at":"2026-05-18T02:05:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.4930","created_at":"2026-05-18T02:05:17Z"},{"alias_kind":"pith_short_12","alias_value":"NQ57SDNVNHRK","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"NQ57SDNVNHRKSKTN","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"NQ57SDNV","created_at":"2026-05-18T12:26:10Z"}],"graph_snapshots":[{"event_id":"sha256:5a469a0f8184c3fb45e984c06fb539c5dd6e1d8f4520b6c99972ccb4e78ba18f","target":"graph","created_at":"2026-05-18T02:05:17Z","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":"Transitional T Tauri disks have optically thin holes with radii > 10 AU, yet accrete up to the median T Tauri rate. Multiple planets inside the hole can torque the gas to high radial speeds over large distances, reducing the local surface density while maintaining accretion. Thus multi-planet systems, together with reductions in disk opacity due to grain growth, can explain how holes can be simultaneously transparent and accreting. There remains the problem of how outer disk gas diffuses into the hole. Here it has been proposed that the magnetorotational instability (MRI) erodes disk surface l","authors_text":"Daniel Perez-Becker, Eugene Chiang (UC Berkeley)","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-09-24T20:00:02Z","title":"Surface Layer Accretion in Transitional and Conventional Disks: From Polycyclic Aromatic Hydrocarbons to Planets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.4930","kind":"arxiv","version":3},"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:e6cd2440331e20baa094953036d2858df29311285480ab81d2bda551be2bd760","target":"record","created_at":"2026-05-18T02:05:17Z","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":"e18f04c5689e4ec2892d81e19d0da2e4301ee348ebfbc5c5393e6882eb08fd0d","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-09-24T20:00:02Z","title_canon_sha256":"0a5787d2e64b55f72fe9b0364ed1eef17ec9d2d4d59841fb4bff619e48b015db"},"schema_version":"1.0","source":{"id":"1009.4930","kind":"arxiv","version":3}},"canonical_sha256":"6c3bf90db569e2a92a6d6ad925814b1a79d0c908c2af971183448ad8e2232ec0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c3bf90db569e2a92a6d6ad925814b1a79d0c908c2af971183448ad8e2232ec0","first_computed_at":"2026-05-18T02:05:17.489297Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:17.489297Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OkkLItZqjhaQbCN9zjws1luZybekGCfU2Ha9MlpGD6273yZtsATwY+3/+wjPehYKFlqId7g9kyjfGzCcsLLVCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:17.490028Z","signed_message":"canonical_sha256_bytes"},"source_id":"1009.4930","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e6cd2440331e20baa094953036d2858df29311285480ab81d2bda551be2bd760","sha256:5a469a0f8184c3fb45e984c06fb539c5dd6e1d8f4520b6c99972ccb4e78ba18f"],"state_sha256":"3189b82dadbae3c8ac1dda50e1710ee2429f631d2a3724195d40ff2772a1a0ab"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"92qPgtlJSAPJe5J6x7VA+GbkHCqUxS6dOxwB1US0mLOahAlhxF7/qH1CWjQ1SxNyuZo5e7lIkS3PlM4Q6nkwDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T18:00:26.645525Z","bundle_sha256":"2f85720d6cb2b4ebb0c04b7336f2c197faa6b8be56a8b355988709fbac034b0c"}}