{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:YV2GLJPGF64KNE5E2KMS5R2JTM","short_pith_number":"pith:YV2GLJPG","canonical_record":{"source":{"id":"1611.01001","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-03T13:29:08Z","cross_cats_sorted":[],"title_canon_sha256":"94cead71e3cdda47625a1ef95da2cdf957ec723a6175993c2963037f5750649a","abstract_canon_sha256":"1af5c8865e062edc4f5b6d12daf2a641a5dc73f1e207bf7b4dae1678610053f5"},"schema_version":"1.0"},"canonical_sha256":"c57465a5e62fb8a693a4d2992ec7499b1816b0ab4f58f771513a564cf27c4eda","source":{"kind":"arxiv","id":"1611.01001","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.01001","created_at":"2026-05-18T00:57:06Z"},{"alias_kind":"arxiv_version","alias_value":"1611.01001v1","created_at":"2026-05-18T00:57:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.01001","created_at":"2026-05-18T00:57:06Z"},{"alias_kind":"pith_short_12","alias_value":"YV2GLJPGF64K","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YV2GLJPGF64KNE5E","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YV2GLJPG","created_at":"2026-05-18T12:30:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:YV2GLJPGF64KNE5E2KMS5R2JTM","target":"record","payload":{"canonical_record":{"source":{"id":"1611.01001","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-03T13:29:08Z","cross_cats_sorted":[],"title_canon_sha256":"94cead71e3cdda47625a1ef95da2cdf957ec723a6175993c2963037f5750649a","abstract_canon_sha256":"1af5c8865e062edc4f5b6d12daf2a641a5dc73f1e207bf7b4dae1678610053f5"},"schema_version":"1.0"},"canonical_sha256":"c57465a5e62fb8a693a4d2992ec7499b1816b0ab4f58f771513a564cf27c4eda","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:57:06.747717Z","signature_b64":"3qS3NLo/AG0ZrNdjklv0X/LoFeE26Oj5bhWpg3xvYnTVP8NaHPazJteNh7if7hOPwIfR7j4M/Eune0lT17evDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c57465a5e62fb8a693a4d2992ec7499b1816b0ab4f58f771513a564cf27c4eda","last_reissued_at":"2026-05-18T00:57:06.747128Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:57:06.747128Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.01001","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":"2026-05-18T00:57:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nV+ZsdLn/Sc5tZdtT8vMAYYhb+KMRbRfH+gRClzEx0LF/ZXE05J/vUQKmrT+JSwStOwdtKZWr1O8KUBX3vVZDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T17:58:05.658544Z"},"content_sha256":"cc487668a49d1a0bd5d27c4c8db1b5867ab338e4812dc253be2bd71664bcbe58","schema_version":"1.0","event_id":"sha256:cc487668a49d1a0bd5d27c4c8db1b5867ab338e4812dc253be2bd71664bcbe58"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:YV2GLJPGF64KNE5E2KMS5R2JTM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Trans-cis molecular photoswitching in interstellar Space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Aguado, B. Tercero, J. Cernicharo, J. R. Goicoechea, O. Roncero, S. Cuadrado","submitted_at":"2016-11-03T13:29:08Z","abstract_excerpt":"As many organic molecules, formic acid (HCOOH) has two conformers (trans and cis). The energy barrier to internal conversion from trans to cis is much higher than the thermal energy available in molecular clouds. Thus, only the most stable conformer (trans) is expected to exist in detectable amounts. We report the first interstellar detection of cis-HCOOH. Its presence in ultraviolet (UV) irradiated gas exclusively (the Orion Bar photodissociation region), with a low trans-to-cis abundance ratio of 2.8+-1.0, supports a photoswitching mechanism: a given conformer absorbs a stellar photon that r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.01001","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":"2026-05-18T00:57:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6Jr6CGxYE9HJ8nEBuL222Bvk6/hqp2OcyVAzuP0CyPx1T61TOHEH50R5xq0cjLqxNQjovmU8L5iTnNOpN7inDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T17:58:05.658887Z"},"content_sha256":"6357cbdb21bbd2d4eaf0652ac5a42de00dac8610d38a3fc5091b8aebe68cba55","schema_version":"1.0","event_id":"sha256:6357cbdb21bbd2d4eaf0652ac5a42de00dac8610d38a3fc5091b8aebe68cba55"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YV2GLJPGF64KNE5E2KMS5R2JTM/bundle.json","state_url":"https://pith.science/pith/YV2GLJPGF64KNE5E2KMS5R2JTM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YV2GLJPGF64KNE5E2KMS5R2JTM/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":"2026-06-04T17:58:05Z","links":{"resolver":"https://pith.science/pith/YV2GLJPGF64KNE5E2KMS5R2JTM","bundle":"https://pith.science/pith/YV2GLJPGF64KNE5E2KMS5R2JTM/bundle.json","state":"https://pith.science/pith/YV2GLJPGF64KNE5E2KMS5R2JTM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YV2GLJPGF64KNE5E2KMS5R2JTM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:YV2GLJPGF64KNE5E2KMS5R2JTM","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":"1af5c8865e062edc4f5b6d12daf2a641a5dc73f1e207bf7b4dae1678610053f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-03T13:29:08Z","title_canon_sha256":"94cead71e3cdda47625a1ef95da2cdf957ec723a6175993c2963037f5750649a"},"schema_version":"1.0","source":{"id":"1611.01001","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.01001","created_at":"2026-05-18T00:57:06Z"},{"alias_kind":"arxiv_version","alias_value":"1611.01001v1","created_at":"2026-05-18T00:57:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.01001","created_at":"2026-05-18T00:57:06Z"},{"alias_kind":"pith_short_12","alias_value":"YV2GLJPGF64K","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YV2GLJPGF64KNE5E","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YV2GLJPG","created_at":"2026-05-18T12:30:53Z"}],"graph_snapshots":[{"event_id":"sha256:6357cbdb21bbd2d4eaf0652ac5a42de00dac8610d38a3fc5091b8aebe68cba55","target":"graph","created_at":"2026-05-18T00:57:06Z","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":"As many organic molecules, formic acid (HCOOH) has two conformers (trans and cis). The energy barrier to internal conversion from trans to cis is much higher than the thermal energy available in molecular clouds. Thus, only the most stable conformer (trans) is expected to exist in detectable amounts. We report the first interstellar detection of cis-HCOOH. Its presence in ultraviolet (UV) irradiated gas exclusively (the Orion Bar photodissociation region), with a low trans-to-cis abundance ratio of 2.8+-1.0, supports a photoswitching mechanism: a given conformer absorbs a stellar photon that r","authors_text":"A. Aguado, B. Tercero, J. Cernicharo, J. R. Goicoechea, O. Roncero, S. Cuadrado","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-03T13:29:08Z","title":"Trans-cis molecular photoswitching in interstellar Space"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.01001","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:cc487668a49d1a0bd5d27c4c8db1b5867ab338e4812dc253be2bd71664bcbe58","target":"record","created_at":"2026-05-18T00:57:06Z","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":"1af5c8865e062edc4f5b6d12daf2a641a5dc73f1e207bf7b4dae1678610053f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-03T13:29:08Z","title_canon_sha256":"94cead71e3cdda47625a1ef95da2cdf957ec723a6175993c2963037f5750649a"},"schema_version":"1.0","source":{"id":"1611.01001","kind":"arxiv","version":1}},"canonical_sha256":"c57465a5e62fb8a693a4d2992ec7499b1816b0ab4f58f771513a564cf27c4eda","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c57465a5e62fb8a693a4d2992ec7499b1816b0ab4f58f771513a564cf27c4eda","first_computed_at":"2026-05-18T00:57:06.747128Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:57:06.747128Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3qS3NLo/AG0ZrNdjklv0X/LoFeE26Oj5bhWpg3xvYnTVP8NaHPazJteNh7if7hOPwIfR7j4M/Eune0lT17evDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:57:06.747717Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.01001","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cc487668a49d1a0bd5d27c4c8db1b5867ab338e4812dc253be2bd71664bcbe58","sha256:6357cbdb21bbd2d4eaf0652ac5a42de00dac8610d38a3fc5091b8aebe68cba55"],"state_sha256":"514e7c8e9c85737bd0d392b0021b0a9ae2c71ec05471b3e4f9d7ea53b94e04b4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mq5hXhT8iNJ9EmNL9C/O/grejK+kauUA0MbjWJS0y8A1wv8MU3i/Qk/LTGLzbCOveevg8Lsl82yJWMqbqrGTDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T17:58:05.660822Z","bundle_sha256":"2b6e67d8b7239cef0645e4bfcad58435d7e8d2a082465ded9614fecc06b192e7"}}