{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:2PPLBF6IN747TTFULWHHLEWZ2X","short_pith_number":"pith:2PPLBF6I","canonical_record":{"source":{"id":"1101.0514","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-01-03T13:06:46Z","cross_cats_sorted":[],"title_canon_sha256":"99eb947875de80dbddb17553248200c8c11bec65864bc73cb04b5b5e1bdbc331","abstract_canon_sha256":"0438504140a471fd708575676ec748324253f9b44159ad120c79870dbf896997"},"schema_version":"1.0"},"canonical_sha256":"d3deb097c86ff9f9ccb45d8e7592d9d5f67586d156568d062c3e958dc4b72c2a","source":{"kind":"arxiv","id":"1101.0514","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.0514","created_at":"2026-05-18T02:04:13Z"},{"alias_kind":"arxiv_version","alias_value":"1101.0514v1","created_at":"2026-05-18T02:04:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.0514","created_at":"2026-05-18T02:04:13Z"},{"alias_kind":"pith_short_12","alias_value":"2PPLBF6IN747","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2PPLBF6IN747TTFU","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2PPLBF6I","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:2PPLBF6IN747TTFULWHHLEWZ2X","target":"record","payload":{"canonical_record":{"source":{"id":"1101.0514","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-01-03T13:06:46Z","cross_cats_sorted":[],"title_canon_sha256":"99eb947875de80dbddb17553248200c8c11bec65864bc73cb04b5b5e1bdbc331","abstract_canon_sha256":"0438504140a471fd708575676ec748324253f9b44159ad120c79870dbf896997"},"schema_version":"1.0"},"canonical_sha256":"d3deb097c86ff9f9ccb45d8e7592d9d5f67586d156568d062c3e958dc4b72c2a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:13.901219Z","signature_b64":"RwQBZgQYWh9ma7bktUjk77d0YhbGneQc3EyEw2SALrguKk8OoOpGq4JpTUd2w+4WMKaNUG4Roiy/ZBcrPNLUBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3deb097c86ff9f9ccb45d8e7592d9d5f67586d156568d062c3e958dc4b72c2a","last_reissued_at":"2026-05-18T02:04:13.900383Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:13.900383Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1101.0514","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":"2026-05-18T02:04:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wpTVjk6AHNw7OlWp6XgNZ4rHrCgeue2Psdc4glctAesmbnU5AW3NmTqQOvC5uPw7uwFdKlm4IkeYXBjqUs5mBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T13:43:57.573956Z"},"content_sha256":"03588ce1869d40d38f97f6d3f3187819caedae4783896afab76e99e27f0b05db","schema_version":"1.0","event_id":"sha256:03588ce1869d40d38f97f6d3f3187819caedae4783896afab76e99e27f0b05db"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:2PPLBF6IN747TTFULWHHLEWZ2X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evolution of PAHs in protoplanetary disks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Inga Kamp","submitted_at":"2011-01-03T13:06:46Z","abstract_excerpt":"Depending on whom you ask, PAHs are either the smallest dust particles or the largest gas-phase molecules in space. Whether referred to as gas or dust, these PAHs can contain up to 20% of the total cosmic carbon abundance and as such also play an important role in the carbon chemistry of protoplanetary disks. The interpretation of PAH bands is often a complex procedure involving not only gas physics to determine their ionization stage and temperature, but also radiative transfer effects that can bury these bands in a strong thermal continuum from a population of larger dust particles.\n  PAHs a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.0514","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":"2026-05-18T02:04:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"86HmEi1Zm5Xy6BhJ0z8sX0MdRzvtyXU2seQZ4DA9tjLU/gQR/kYAjEjjnJV4+XHXHMtRM3KTNlpCvfy6DpyUBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T13:43:57.574646Z"},"content_sha256":"c6d9538ac6b59c64a86ddca2a8ab5acc418b469289cea40e63ac1a232006c029","schema_version":"1.0","event_id":"sha256:c6d9538ac6b59c64a86ddca2a8ab5acc418b469289cea40e63ac1a232006c029"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2PPLBF6IN747TTFULWHHLEWZ2X/bundle.json","state_url":"https://pith.science/pith/2PPLBF6IN747TTFULWHHLEWZ2X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2PPLBF6IN747TTFULWHHLEWZ2X/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":"2026-05-27T13:43:57Z","links":{"resolver":"https://pith.science/pith/2PPLBF6IN747TTFULWHHLEWZ2X","bundle":"https://pith.science/pith/2PPLBF6IN747TTFULWHHLEWZ2X/bundle.json","state":"https://pith.science/pith/2PPLBF6IN747TTFULWHHLEWZ2X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2PPLBF6IN747TTFULWHHLEWZ2X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:2PPLBF6IN747TTFULWHHLEWZ2X","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":"0438504140a471fd708575676ec748324253f9b44159ad120c79870dbf896997","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-01-03T13:06:46Z","title_canon_sha256":"99eb947875de80dbddb17553248200c8c11bec65864bc73cb04b5b5e1bdbc331"},"schema_version":"1.0","source":{"id":"1101.0514","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.0514","created_at":"2026-05-18T02:04:13Z"},{"alias_kind":"arxiv_version","alias_value":"1101.0514v1","created_at":"2026-05-18T02:04:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.0514","created_at":"2026-05-18T02:04:13Z"},{"alias_kind":"pith_short_12","alias_value":"2PPLBF6IN747","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2PPLBF6IN747TTFU","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2PPLBF6I","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:c6d9538ac6b59c64a86ddca2a8ab5acc418b469289cea40e63ac1a232006c029","target":"graph","created_at":"2026-05-18T02:04:13Z","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":"Depending on whom you ask, PAHs are either the smallest dust particles or the largest gas-phase molecules in space. Whether referred to as gas or dust, these PAHs can contain up to 20% of the total cosmic carbon abundance and as such also play an important role in the carbon chemistry of protoplanetary disks. The interpretation of PAH bands is often a complex procedure involving not only gas physics to determine their ionization stage and temperature, but also radiative transfer effects that can bury these bands in a strong thermal continuum from a population of larger dust particles.\n  PAHs a","authors_text":"Inga Kamp","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-01-03T13:06:46Z","title":"Evolution of PAHs in protoplanetary disks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.0514","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":"sha256:03588ce1869d40d38f97f6d3f3187819caedae4783896afab76e99e27f0b05db","target":"record","created_at":"2026-05-18T02:04:13Z","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":"0438504140a471fd708575676ec748324253f9b44159ad120c79870dbf896997","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-01-03T13:06:46Z","title_canon_sha256":"99eb947875de80dbddb17553248200c8c11bec65864bc73cb04b5b5e1bdbc331"},"schema_version":"1.0","source":{"id":"1101.0514","kind":"arxiv","version":1}},"canonical_sha256":"d3deb097c86ff9f9ccb45d8e7592d9d5f67586d156568d062c3e958dc4b72c2a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3deb097c86ff9f9ccb45d8e7592d9d5f67586d156568d062c3e958dc4b72c2a","first_computed_at":"2026-05-18T02:04:13.900383Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:13.900383Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RwQBZgQYWh9ma7bktUjk77d0YhbGneQc3EyEw2SALrguKk8OoOpGq4JpTUd2w+4WMKaNUG4Roiy/ZBcrPNLUBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:13.901219Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.0514","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:03588ce1869d40d38f97f6d3f3187819caedae4783896afab76e99e27f0b05db","sha256:c6d9538ac6b59c64a86ddca2a8ab5acc418b469289cea40e63ac1a232006c029"],"state_sha256":"2b31ad7f91355993800ccc565749df5ec22fb43bb7015a1d077626b472a8862a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fSDB9SnYJx/f5iAW7WYiEP6P2/GG0pfWeyZXvXBy00xah2JByc1BF9PNsq2Lk8QtA6EpRPSSEh+42AcrpYI4Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T13:43:57.577728Z","bundle_sha256":"fe7790da2881672c112e41d31dc0f439b941d65e08705cf1ff3252ed340c4f15"}}