{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:ZJKIIQBGQKKF5OXM3GIMFSG5RS","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":"7cd9319d2c5faffe66ac0570f22a18f0f7ff716f7fa928467929a2065c9c63d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-16T20:00:01Z","title_canon_sha256":"802219445ca5024ba345cea2af83e92272223636ee607ff96b46f75dc7ce43e9"},"schema_version":"1.0","source":{"id":"1308.3703","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.3703","created_at":"2026-05-18T03:15:42Z"},{"alias_kind":"arxiv_version","alias_value":"1308.3703v1","created_at":"2026-05-18T03:15:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.3703","created_at":"2026-05-18T03:15:42Z"},{"alias_kind":"pith_short_12","alias_value":"ZJKIIQBGQKKF","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"ZJKIIQBGQKKF5OXM","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"ZJKIIQBG","created_at":"2026-05-18T12:28:09Z"}],"graph_snapshots":[{"event_id":"sha256:584d7f0aceedc4d20b266ac99cd1869cc7af267c8474d1dc9563fb94956e8bf6","target":"graph","created_at":"2026-05-18T03:15:42Z","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":"[abridged] The 12CO/13CO ratio is often used as a measure of the 12C/13C ratio in the circumstellar environment, carrying important information about the stellar nucleosynthesis. External processes can change the 12CO and 13CO abundances, and spatially resolved studies of the 12CO/13CO ratio are needed to quantify the effect of these processes on the globally determined values. Additionally, such studies provide important information on the conditions in the circumstellar environment. The detached-shell source R Scl, displaying CO emission from recent mass loss, in a binary-induced spiral stru","authors_text":"F. Kerschbaum, H. Olofsson, M.A.T. Groenewegen, M. Brunner, M. Lindqvist, M. Maercker, M. Wittkowski, S. Mohamed, S. Ramstedt, W.H.T. Vlemmings","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-16T20:00:01Z","title":"ALMA observations of the variable 12CO/13CO ratio around the asymptotic giant branch star R Sculptoris"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.3703","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:a78e6e89e508cfb13fcf139848f6717f1cb0b8ad6212ff2cc830e5f5e21db248","target":"record","created_at":"2026-05-18T03:15:42Z","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":"7cd9319d2c5faffe66ac0570f22a18f0f7ff716f7fa928467929a2065c9c63d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-16T20:00:01Z","title_canon_sha256":"802219445ca5024ba345cea2af83e92272223636ee607ff96b46f75dc7ce43e9"},"schema_version":"1.0","source":{"id":"1308.3703","kind":"arxiv","version":1}},"canonical_sha256":"ca5484402682945ebaecd990c2c8dd8c838c49ef865d43a8d4f5fe287a2b32dc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ca5484402682945ebaecd990c2c8dd8c838c49ef865d43a8d4f5fe287a2b32dc","first_computed_at":"2026-05-18T03:15:42.807722Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:15:42.807722Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6+EXR5bK71vTZeGZFHf+JngTH6DL1FN2ha3Qj4cfVUYa1h0hmmL7bItBuDKysgqeKCc7VdDatjZzlDv42uNHBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:15:42.808465Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.3703","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a78e6e89e508cfb13fcf139848f6717f1cb0b8ad6212ff2cc830e5f5e21db248","sha256:584d7f0aceedc4d20b266ac99cd1869cc7af267c8474d1dc9563fb94956e8bf6"],"state_sha256":"c66a2f47c629eed3d383bbcbe46d2bfb6d1929735134f189943e50c7aa2f7200"}