{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:GGYR7OS3SYTWCB3MKNDNXKU7YI","short_pith_number":"pith:GGYR7OS3","canonical_record":{"source":{"id":"2012.05788","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-12-10T16:22:50Z","cross_cats_sorted":[],"title_canon_sha256":"529704af0766dea0fc41ab71bf7465dad309e0a3e3844355a13ee36fd568055c","abstract_canon_sha256":"0a27de222f116a05d4991dced1756be872cb7d37bfd9a03e6ae0b6a2620bdadd"},"schema_version":"1.0"},"canonical_sha256":"31b11fba5b962761076c5346dbaa9fc20cf911e75a9d9919a728c6eba28b85c1","source":{"kind":"arxiv","id":"2012.05788","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.05788","created_at":"2026-07-05T01:58:36Z"},{"alias_kind":"arxiv_version","alias_value":"2012.05788v1","created_at":"2026-07-05T01:58:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.05788","created_at":"2026-07-05T01:58:36Z"},{"alias_kind":"pith_short_12","alias_value":"GGYR7OS3SYTW","created_at":"2026-07-05T01:58:36Z"},{"alias_kind":"pith_short_16","alias_value":"GGYR7OS3SYTWCB3M","created_at":"2026-07-05T01:58:36Z"},{"alias_kind":"pith_short_8","alias_value":"GGYR7OS3","created_at":"2026-07-05T01:58:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:GGYR7OS3SYTWCB3MKNDNXKU7YI","target":"record","payload":{"canonical_record":{"source":{"id":"2012.05788","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-12-10T16:22:50Z","cross_cats_sorted":[],"title_canon_sha256":"529704af0766dea0fc41ab71bf7465dad309e0a3e3844355a13ee36fd568055c","abstract_canon_sha256":"0a27de222f116a05d4991dced1756be872cb7d37bfd9a03e6ae0b6a2620bdadd"},"schema_version":"1.0"},"canonical_sha256":"31b11fba5b962761076c5346dbaa9fc20cf911e75a9d9919a728c6eba28b85c1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:58:36.986757Z","signature_b64":"ta9vmi8XeE+EMpdZr8p9GqPwwKx5d3aal/Ygrf1SAYBQNvdcQ/Ng0wwC2TyB+BSfXVfog14Emn9lirgCPzdWBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"31b11fba5b962761076c5346dbaa9fc20cf911e75a9d9919a728c6eba28b85c1","last_reissued_at":"2026-07-05T01:58:36.986162Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:58:36.986162Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.05788","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":"2026-07-05T01:58:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yustw96/CbfO3bFx4wKBoudWRadIQLHjz/6XovlqM0ncCU0FUjqkcMXrbYdzThvRA2gDL+4h2TtgsUeseY/+Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T11:44:56.509432Z"},"content_sha256":"7735e656c6ecf930f70699f9a1e5431b055d4a2664449fa694ec2f428523ec9b","schema_version":"1.0","event_id":"sha256:7735e656c6ecf930f70699f9a1e5431b055d4a2664449fa694ec2f428523ec9b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:GGYR7OS3SYTWCB3MKNDNXKU7YI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Molecule dependent oxygen isotopic ratios in the coma of comet 67P/Churyumov-Gerasimenko","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"H. Balsiger, I. Schroeder, J. De Keyser, K. Altwegg, M. Combi, M. N. Drozdovskaya, M. Rubin, M. Schuhmann, N. H\\\"anni, S. A. Fuselier, S. Wampfler, T. I. Gombosi","submitted_at":"2020-12-10T16:22:50Z","abstract_excerpt":"The ratios of the three stable oxygen isotopes 16O, 17O and 18O on Earth and, as far as we know in the solar system, show variations on the order of a few percent at most, with a few outliers in meteorites. However, in the interstellar medium there are some highly fractionated oxygen isotopic ratios in some specific molecules. The goal of this work is to investigate the oxygen isotopic ratios in different volatile molecules found in the coma of comet 67P/Churyumov-Gerasimenko and compare them with findings from interstellar clouds in order to assess commonalities and differences. To accomplish"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.05788","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/2012.05788/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":"2026-07-05T01:58:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JJU0A/iaDsdUar8Yzb6z1i+6W/sY4wxQ3Gy9PJF7ErbolXTCn2OluxRfw2Vm38yw+5486nq2xKU7Qna17L/8Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T11:44:56.509799Z"},"content_sha256":"151df219bc21f5c6354886b5f4fe1a94898c0b54e9e867ec51b1cf40214537bb","schema_version":"1.0","event_id":"sha256:151df219bc21f5c6354886b5f4fe1a94898c0b54e9e867ec51b1cf40214537bb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GGYR7OS3SYTWCB3MKNDNXKU7YI/bundle.json","state_url":"https://pith.science/pith/GGYR7OS3SYTWCB3MKNDNXKU7YI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GGYR7OS3SYTWCB3MKNDNXKU7YI/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":"2026-07-06T11:44:56Z","links":{"resolver":"https://pith.science/pith/GGYR7OS3SYTWCB3MKNDNXKU7YI","bundle":"https://pith.science/pith/GGYR7OS3SYTWCB3MKNDNXKU7YI/bundle.json","state":"https://pith.science/pith/GGYR7OS3SYTWCB3MKNDNXKU7YI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GGYR7OS3SYTWCB3MKNDNXKU7YI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:GGYR7OS3SYTWCB3MKNDNXKU7YI","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":"0a27de222f116a05d4991dced1756be872cb7d37bfd9a03e6ae0b6a2620bdadd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-12-10T16:22:50Z","title_canon_sha256":"529704af0766dea0fc41ab71bf7465dad309e0a3e3844355a13ee36fd568055c"},"schema_version":"1.0","source":{"id":"2012.05788","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.05788","created_at":"2026-07-05T01:58:36Z"},{"alias_kind":"arxiv_version","alias_value":"2012.05788v1","created_at":"2026-07-05T01:58:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.05788","created_at":"2026-07-05T01:58:36Z"},{"alias_kind":"pith_short_12","alias_value":"GGYR7OS3SYTW","created_at":"2026-07-05T01:58:36Z"},{"alias_kind":"pith_short_16","alias_value":"GGYR7OS3SYTWCB3M","created_at":"2026-07-05T01:58:36Z"},{"alias_kind":"pith_short_8","alias_value":"GGYR7OS3","created_at":"2026-07-05T01:58:36Z"}],"graph_snapshots":[{"event_id":"sha256:151df219bc21f5c6354886b5f4fe1a94898c0b54e9e867ec51b1cf40214537bb","target":"graph","created_at":"2026-07-05T01:58:36Z","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/2012.05788/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The ratios of the three stable oxygen isotopes 16O, 17O and 18O on Earth and, as far as we know in the solar system, show variations on the order of a few percent at most, with a few outliers in meteorites. However, in the interstellar medium there are some highly fractionated oxygen isotopic ratios in some specific molecules. The goal of this work is to investigate the oxygen isotopic ratios in different volatile molecules found in the coma of comet 67P/Churyumov-Gerasimenko and compare them with findings from interstellar clouds in order to assess commonalities and differences. To accomplish","authors_text":"H. Balsiger, I. Schroeder, J. De Keyser, K. Altwegg, M. Combi, M. N. Drozdovskaya, M. Rubin, M. Schuhmann, N. H\\\"anni, S. A. Fuselier, S. Wampfler, T. I. Gombosi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-12-10T16:22:50Z","title":"Molecule dependent oxygen isotopic ratios in the coma of comet 67P/Churyumov-Gerasimenko"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.05788","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":"sha256:7735e656c6ecf930f70699f9a1e5431b055d4a2664449fa694ec2f428523ec9b","target":"record","created_at":"2026-07-05T01:58:36Z","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":"0a27de222f116a05d4991dced1756be872cb7d37bfd9a03e6ae0b6a2620bdadd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-12-10T16:22:50Z","title_canon_sha256":"529704af0766dea0fc41ab71bf7465dad309e0a3e3844355a13ee36fd568055c"},"schema_version":"1.0","source":{"id":"2012.05788","kind":"arxiv","version":1}},"canonical_sha256":"31b11fba5b962761076c5346dbaa9fc20cf911e75a9d9919a728c6eba28b85c1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"31b11fba5b962761076c5346dbaa9fc20cf911e75a9d9919a728c6eba28b85c1","first_computed_at":"2026-07-05T01:58:36.986162Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:58:36.986162Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ta9vmi8XeE+EMpdZr8p9GqPwwKx5d3aal/Ygrf1SAYBQNvdcQ/Ng0wwC2TyB+BSfXVfog14Emn9lirgCPzdWBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:58:36.986757Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.05788","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7735e656c6ecf930f70699f9a1e5431b055d4a2664449fa694ec2f428523ec9b","sha256:151df219bc21f5c6354886b5f4fe1a94898c0b54e9e867ec51b1cf40214537bb"],"state_sha256":"8ec876646c43767f7eb3fb8bcc3fb6712dcb6fb5e30d6543ac118126dc8789c8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LUaPwY/hTYPxddkQb5wv69xTZcd+eI3u5vVN+GTXpLxsKrrmR+FNc9gXQt+b6kWQnsJDIzIdcqYLc2yT8M8cCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T11:44:56.511800Z","bundle_sha256":"cb0702bc8ba466850a7311c0e880ef97b7f2bdd7bb688bde52de14ab839ee294"}}