{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:6FGG7PQJ2OSHDDREC2VHMF7XQZ","short_pith_number":"pith:6FGG7PQJ","canonical_record":{"source":{"id":"2505.20427","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-05-26T18:24:52Z","cross_cats_sorted":[],"title_canon_sha256":"80f9d2a2831dd2a24b9889f89dc58c24ce41028a976edf8bd3fe46b61b0897dd","abstract_canon_sha256":"6bc08b9bbe00f1ee1b588379e7d178e3854445a6175dd3abdbe21e06c7893c1a"},"schema_version":"1.0"},"canonical_sha256":"f14c6fbe09d3a4718e2416aa7617f78655310345b5f92357fc3b20224de0e4af","source":{"kind":"arxiv","id":"2505.20427","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.20427","created_at":"2026-07-05T11:37:21Z"},{"alias_kind":"arxiv_version","alias_value":"2505.20427v1","created_at":"2026-07-05T11:37:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.20427","created_at":"2026-07-05T11:37:21Z"},{"alias_kind":"pith_short_12","alias_value":"6FGG7PQJ2OSH","created_at":"2026-07-05T11:37:21Z"},{"alias_kind":"pith_short_16","alias_value":"6FGG7PQJ2OSHDDRE","created_at":"2026-07-05T11:37:21Z"},{"alias_kind":"pith_short_8","alias_value":"6FGG7PQJ","created_at":"2026-07-05T11:37:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:6FGG7PQJ2OSHDDREC2VHMF7XQZ","target":"record","payload":{"canonical_record":{"source":{"id":"2505.20427","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-05-26T18:24:52Z","cross_cats_sorted":[],"title_canon_sha256":"80f9d2a2831dd2a24b9889f89dc58c24ce41028a976edf8bd3fe46b61b0897dd","abstract_canon_sha256":"6bc08b9bbe00f1ee1b588379e7d178e3854445a6175dd3abdbe21e06c7893c1a"},"schema_version":"1.0"},"canonical_sha256":"f14c6fbe09d3a4718e2416aa7617f78655310345b5f92357fc3b20224de0e4af","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:37:21.883303Z","signature_b64":"HpOHfyoE7ajxw8LQyCzK4xMNPXo4whn4YYqRMr+wLK6AtJOK3Xs891awZKq2z0UOn6+RkY3bGMIUUOpSbInFBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f14c6fbe09d3a4718e2416aa7617f78655310345b5f92357fc3b20224de0e4af","last_reissued_at":"2026-07-05T11:37:21.882843Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:37:21.882843Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.20427","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":"2026-07-05T11:37:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5bvJr04kgCI8hxDqFW6k/mf1XEEeZtmSlFHBLVN7FjY0IMC883u/JcqGoWkfuu+JR0DHthEbWDavj+tGhhfKAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T12:48:47.412324Z"},"content_sha256":"9890a442c1b6fa30d4c05b3be570525af657396aefb6d191a62b1f4f894116d0","schema_version":"1.0","event_id":"sha256:9890a442c1b6fa30d4c05b3be570525af657396aefb6d191a62b1f4f894116d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:6FGG7PQJ2OSHDDREC2VHMF7XQZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Burned to ashes: How the thermal decomposition of refractory organics in the inner protoplanetary disc impacts the gas-phase C/O ratio","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Adrien Houge, Anders Johansen, Bertram Bitsch, Edwin Bergin, Fred J. Ciesla, Giulia Perotti, Michiel Lambrechts, Thomas Henning","submitted_at":"2025-05-26T18:24:52Z","abstract_excerpt":"The largest reservoir of carbon in protoplanetary discs is stored in refractory organics, which thermally decompose into the gas-phase at the organics line, well interior to the water iceline. Because this region is so close to the host star, it is often assumed that the released gaseous material is rapidly accreted and plays little role in the evolution of the disc composition. However, laboratory experiments show that the thermal decomposition process is irreversible, breaking macromolecular refractory organics into simpler, volatile carbon-bearing compounds. As a result, unlike the iceline "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.20427","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2505.20427/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T11:37:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7NHxiiGiz5jZoP8Z9iG2fMzCq9Tx0iWUEhqg3uy6ejAXy9mmYjqUUN5ysnZGqoZoZ1/7lVkU2+dToYu5UGPWDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T12:48:47.413321Z"},"content_sha256":"a0bfd60f3eb83f7b8efa763d5fc7c0045465e6112560f808663fc117ee77231f","schema_version":"1.0","event_id":"sha256:a0bfd60f3eb83f7b8efa763d5fc7c0045465e6112560f808663fc117ee77231f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6FGG7PQJ2OSHDDREC2VHMF7XQZ/bundle.json","state_url":"https://pith.science/pith/6FGG7PQJ2OSHDDREC2VHMF7XQZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6FGG7PQJ2OSHDDREC2VHMF7XQZ/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":"2026-08-07T12:48:47Z","links":{"resolver":"https://pith.science/pith/6FGG7PQJ2OSHDDREC2VHMF7XQZ","bundle":"https://pith.science/pith/6FGG7PQJ2OSHDDREC2VHMF7XQZ/bundle.json","state":"https://pith.science/pith/6FGG7PQJ2OSHDDREC2VHMF7XQZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6FGG7PQJ2OSHDDREC2VHMF7XQZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:6FGG7PQJ2OSHDDREC2VHMF7XQZ","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":"6bc08b9bbe00f1ee1b588379e7d178e3854445a6175dd3abdbe21e06c7893c1a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-05-26T18:24:52Z","title_canon_sha256":"80f9d2a2831dd2a24b9889f89dc58c24ce41028a976edf8bd3fe46b61b0897dd"},"schema_version":"1.0","source":{"id":"2505.20427","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.20427","created_at":"2026-07-05T11:37:21Z"},{"alias_kind":"arxiv_version","alias_value":"2505.20427v1","created_at":"2026-07-05T11:37:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.20427","created_at":"2026-07-05T11:37:21Z"},{"alias_kind":"pith_short_12","alias_value":"6FGG7PQJ2OSH","created_at":"2026-07-05T11:37:21Z"},{"alias_kind":"pith_short_16","alias_value":"6FGG7PQJ2OSHDDRE","created_at":"2026-07-05T11:37:21Z"},{"alias_kind":"pith_short_8","alias_value":"6FGG7PQJ","created_at":"2026-07-05T11:37:21Z"}],"graph_snapshots":[{"event_id":"sha256:a0bfd60f3eb83f7b8efa763d5fc7c0045465e6112560f808663fc117ee77231f","target":"graph","created_at":"2026-07-05T11:37:21Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2505.20427/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The largest reservoir of carbon in protoplanetary discs is stored in refractory organics, which thermally decompose into the gas-phase at the organics line, well interior to the water iceline. Because this region is so close to the host star, it is often assumed that the released gaseous material is rapidly accreted and plays little role in the evolution of the disc composition. However, laboratory experiments show that the thermal decomposition process is irreversible, breaking macromolecular refractory organics into simpler, volatile carbon-bearing compounds. As a result, unlike the iceline ","authors_text":"Adrien Houge, Anders Johansen, Bertram Bitsch, Edwin Bergin, Fred J. Ciesla, Giulia Perotti, Michiel Lambrechts, Thomas Henning","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-05-26T18:24:52Z","title":"Burned to ashes: How the thermal decomposition of refractory organics in the inner protoplanetary disc impacts the gas-phase C/O ratio"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.20427","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":"sha256:9890a442c1b6fa30d4c05b3be570525af657396aefb6d191a62b1f4f894116d0","target":"record","created_at":"2026-07-05T11:37:21Z","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":"6bc08b9bbe00f1ee1b588379e7d178e3854445a6175dd3abdbe21e06c7893c1a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-05-26T18:24:52Z","title_canon_sha256":"80f9d2a2831dd2a24b9889f89dc58c24ce41028a976edf8bd3fe46b61b0897dd"},"schema_version":"1.0","source":{"id":"2505.20427","kind":"arxiv","version":1}},"canonical_sha256":"f14c6fbe09d3a4718e2416aa7617f78655310345b5f92357fc3b20224de0e4af","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f14c6fbe09d3a4718e2416aa7617f78655310345b5f92357fc3b20224de0e4af","first_computed_at":"2026-07-05T11:37:21.882843Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:37:21.882843Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HpOHfyoE7ajxw8LQyCzK4xMNPXo4whn4YYqRMr+wLK6AtJOK3Xs891awZKq2z0UOn6+RkY3bGMIUUOpSbInFBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:37:21.883303Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.20427","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9890a442c1b6fa30d4c05b3be570525af657396aefb6d191a62b1f4f894116d0","sha256:a0bfd60f3eb83f7b8efa763d5fc7c0045465e6112560f808663fc117ee77231f"],"state_sha256":"eb1b82a9a14f3cce5a1cc729fd7d3d709cc2e33d4ec11f517395115c26e72004"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0kzK61t7rMqsMPe9nqUI6JqrKJ1UtDRYSVPzmFn2LKxoWmK4Jr+AZqf+xNqVn3la+74nvqcx15SDMRn3+2mpBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T12:48:47.418815Z","bundle_sha256":"583405bdc63c20f52270337b528894142b4486cf20697aca19880e803293013d"}}