{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:TV7K37PAOPN354VMYOEQNTU6KZ","short_pith_number":"pith:TV7K37PA","canonical_record":{"source":{"id":"1012.5269","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-12-23T18:12:25Z","cross_cats_sorted":[],"title_canon_sha256":"542bde4eb73e39f5a13ecb314b9fd511000754cbc5374479b61fcac887ba3edf","abstract_canon_sha256":"7f5a016bdc6df66af4e15742e2d866b0a10260c63f417732fe5096d8c08be7e0"},"schema_version":"1.0"},"canonical_sha256":"9d7eadfde073dbbef2acc38906ce9e5656a1a0251f78a059785c5f53bb494dc9","source":{"kind":"arxiv","id":"1012.5269","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.5269","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"arxiv_version","alias_value":"1012.5269v2","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.5269","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"pith_short_12","alias_value":"TV7K37PAOPN3","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"TV7K37PAOPN354VM","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"TV7K37PA","created_at":"2026-05-18T12:26:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:TV7K37PAOPN354VMYOEQNTU6KZ","target":"record","payload":{"canonical_record":{"source":{"id":"1012.5269","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-12-23T18:12:25Z","cross_cats_sorted":[],"title_canon_sha256":"542bde4eb73e39f5a13ecb314b9fd511000754cbc5374479b61fcac887ba3edf","abstract_canon_sha256":"7f5a016bdc6df66af4e15742e2d866b0a10260c63f417732fe5096d8c08be7e0"},"schema_version":"1.0"},"canonical_sha256":"9d7eadfde073dbbef2acc38906ce9e5656a1a0251f78a059785c5f53bb494dc9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:17.959304Z","signature_b64":"OMzN8kbg7pMJJHtg0ovv89zd/NPdkjU5CD3sI0PkUAMdvZo5SL1uxkCMY4rirgJa79umcO6oG207tbiPA6qhAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9d7eadfde073dbbef2acc38906ce9e5656a1a0251f78a059785c5f53bb494dc9","last_reissued_at":"2026-05-18T02:04:17.958756Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:17.958756Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1012.5269","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":"2026-05-18T02:04:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5QLu78C7BO/fsDRUq+b16y4kxtUu5+CCHBzJAo2rg2yjU5VZwxcNn3LNrbrHUODLg6ZG51pxbN9zEUHnYuJTCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T15:41:14.933811Z"},"content_sha256":"6a63d6d926bc8e31ed61aac1f26c1faed73dee099d063946dc901755006e5783","schema_version":"1.0","event_id":"sha256:6a63d6d926bc8e31ed61aac1f26c1faed73dee099d063946dc901755006e5783"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:TV7K37PAOPN354VMYOEQNTU6KZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evolution of Coated Grains in Spiral Shocks of Self-Gravitating Protoplanetary Disks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"L. Mayer, M. Podolak, T. Quinn","submitted_at":"2010-12-23T18:12:25Z","abstract_excerpt":"We investigate the evolution of grains composed of an ice shell surrounding an olivine core as they pass through a spiral shock in a protoplanetary disk. We use published three-dimensional radiation-hydrodynamics simulations of massive self-gravitating protoplanetary disks to extract the thermodynamics of spiral shocks in the region between 10 and 20 AU from the central star. As the density wave passes, it heats the grains, causing them to lose their ice shell and resulting in a lowering of the grain opacity. In addition, since grains of different sizes will have slightly different temperature"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.5269","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":"2026-05-18T02:04:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xXPIA9FlrkxII4moFdCfIAAeuOLuAwnlYNeVV1SDQye76qE2TDAozBxLnpYiyE4KIao1kBSbGlWtj+RUmFHXDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T15:41:14.934546Z"},"content_sha256":"984f7fe20e93974b5ba939d9e963a0d18ab0ca9fa3cf9fdfc8ba1e64dd8f53f3","schema_version":"1.0","event_id":"sha256:984f7fe20e93974b5ba939d9e963a0d18ab0ca9fa3cf9fdfc8ba1e64dd8f53f3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TV7K37PAOPN354VMYOEQNTU6KZ/bundle.json","state_url":"https://pith.science/pith/TV7K37PAOPN354VMYOEQNTU6KZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TV7K37PAOPN354VMYOEQNTU6KZ/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":"2026-06-08T15:41:14Z","links":{"resolver":"https://pith.science/pith/TV7K37PAOPN354VMYOEQNTU6KZ","bundle":"https://pith.science/pith/TV7K37PAOPN354VMYOEQNTU6KZ/bundle.json","state":"https://pith.science/pith/TV7K37PAOPN354VMYOEQNTU6KZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TV7K37PAOPN354VMYOEQNTU6KZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:TV7K37PAOPN354VMYOEQNTU6KZ","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":"7f5a016bdc6df66af4e15742e2d866b0a10260c63f417732fe5096d8c08be7e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-12-23T18:12:25Z","title_canon_sha256":"542bde4eb73e39f5a13ecb314b9fd511000754cbc5374479b61fcac887ba3edf"},"schema_version":"1.0","source":{"id":"1012.5269","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.5269","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"arxiv_version","alias_value":"1012.5269v2","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.5269","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"pith_short_12","alias_value":"TV7K37PAOPN3","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"TV7K37PAOPN354VM","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"TV7K37PA","created_at":"2026-05-18T12:26:15Z"}],"graph_snapshots":[{"event_id":"sha256:984f7fe20e93974b5ba939d9e963a0d18ab0ca9fa3cf9fdfc8ba1e64dd8f53f3","target":"graph","created_at":"2026-05-18T02:04:17Z","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":"We investigate the evolution of grains composed of an ice shell surrounding an olivine core as they pass through a spiral shock in a protoplanetary disk. We use published three-dimensional radiation-hydrodynamics simulations of massive self-gravitating protoplanetary disks to extract the thermodynamics of spiral shocks in the region between 10 and 20 AU from the central star. As the density wave passes, it heats the grains, causing them to lose their ice shell and resulting in a lowering of the grain opacity. In addition, since grains of different sizes will have slightly different temperature","authors_text":"L. Mayer, M. Podolak, T. Quinn","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-12-23T18:12:25Z","title":"Evolution of Coated Grains in Spiral Shocks of Self-Gravitating Protoplanetary Disks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.5269","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":"sha256:6a63d6d926bc8e31ed61aac1f26c1faed73dee099d063946dc901755006e5783","target":"record","created_at":"2026-05-18T02:04:17Z","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":"7f5a016bdc6df66af4e15742e2d866b0a10260c63f417732fe5096d8c08be7e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2010-12-23T18:12:25Z","title_canon_sha256":"542bde4eb73e39f5a13ecb314b9fd511000754cbc5374479b61fcac887ba3edf"},"schema_version":"1.0","source":{"id":"1012.5269","kind":"arxiv","version":2}},"canonical_sha256":"9d7eadfde073dbbef2acc38906ce9e5656a1a0251f78a059785c5f53bb494dc9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9d7eadfde073dbbef2acc38906ce9e5656a1a0251f78a059785c5f53bb494dc9","first_computed_at":"2026-05-18T02:04:17.958756Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:17.958756Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OMzN8kbg7pMJJHtg0ovv89zd/NPdkjU5CD3sI0PkUAMdvZo5SL1uxkCMY4rirgJa79umcO6oG207tbiPA6qhAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:17.959304Z","signed_message":"canonical_sha256_bytes"},"source_id":"1012.5269","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6a63d6d926bc8e31ed61aac1f26c1faed73dee099d063946dc901755006e5783","sha256:984f7fe20e93974b5ba939d9e963a0d18ab0ca9fa3cf9fdfc8ba1e64dd8f53f3"],"state_sha256":"f760641f97b1551cffad2112caaf9639ce4a3c9b063b292a9579e334e5af1528"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BaDj6h6IXDGSP5O8K8yovVsG3wzUAK0Od9+j3GufD2iPun9Cs+oLXooyALcSHwzbmnWmU9l9JQpe+wAFhfJ3Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T15:41:14.938066Z","bundle_sha256":"9fb88ce9855210cddce9df569d04acd6cc140d900db155f795ff7e00f103b25b"}}