{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:X6H34I3QYNSI7NMQAFUKAIXR4E","short_pith_number":"pith:X6H34I3Q","canonical_record":{"source":{"id":"2506.02343","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-06-03T00:46:55Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"c4e9b8011d0493ddd077ba643814a4178301143c5b72bb3dc2a7e9df48328f64","abstract_canon_sha256":"84fa67c07745a8ae87dd9a410eaeebd0200f2f7142b6b9c1fe1174cdb81f71dd"},"schema_version":"1.0"},"canonical_sha256":"bf8fbe2370c3648fb5900168a022f1e13b45efafa38f447ce2ece0fd191a91dd","source":{"kind":"arxiv","id":"2506.02343","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.02343","created_at":"2026-07-05T11:33:51Z"},{"alias_kind":"arxiv_version","alias_value":"2506.02343v1","created_at":"2026-07-05T11:33:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.02343","created_at":"2026-07-05T11:33:51Z"},{"alias_kind":"pith_short_12","alias_value":"X6H34I3QYNSI","created_at":"2026-07-05T11:33:51Z"},{"alias_kind":"pith_short_16","alias_value":"X6H34I3QYNSI7NMQ","created_at":"2026-07-05T11:33:51Z"},{"alias_kind":"pith_short_8","alias_value":"X6H34I3Q","created_at":"2026-07-05T11:33:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:X6H34I3QYNSI7NMQAFUKAIXR4E","target":"record","payload":{"canonical_record":{"source":{"id":"2506.02343","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-06-03T00:46:55Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"c4e9b8011d0493ddd077ba643814a4178301143c5b72bb3dc2a7e9df48328f64","abstract_canon_sha256":"84fa67c07745a8ae87dd9a410eaeebd0200f2f7142b6b9c1fe1174cdb81f71dd"},"schema_version":"1.0"},"canonical_sha256":"bf8fbe2370c3648fb5900168a022f1e13b45efafa38f447ce2ece0fd191a91dd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:33:51.970164Z","signature_b64":"R/ku2hwMNzJx59d+AxKBemGPqPxJkC7nbWKK81uI/BbeiXInHszqxoDAJqv/wY5No0+L3k58XBSAXkQnuKBlAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf8fbe2370c3648fb5900168a022f1e13b45efafa38f447ce2ece0fd191a91dd","last_reissued_at":"2026-07-05T11:33:51.969710Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:33:51.969710Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.02343","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":"2026-07-05T11:33:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xq5MFVyku2GRQGGWeb4RQ/ZcceWqBi9kd3YKzHKtxLWuNBUxLKaMmbnJajNctKRWUbWcVS5eQ2wyC/8HZektCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T00:12:26.292836Z"},"content_sha256":"4f4e4f9bbd04e642f60208e06d9fb49a820e89635d04bd0c8412f0c0c2388447","schema_version":"1.0","event_id":"sha256:4f4e4f9bbd04e642f60208e06d9fb49a820e89635d04bd0c8412f0c0c2388447"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:X6H34I3QYNSI7NMQAFUKAIXR4E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Alkali phenoxides in comets","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.EP","authors_text":"A. Aletti, A. Rotundi, L. Buzzi, L. Tonietti, M. Fulle, P. Molaro, P. Valisa","submitted_at":"2025-06-03T00:46:55Z","abstract_excerpt":"Potassium was first detected in spectra of the sungrazer comet Ikeya-Seki at the heliocentric distance rh = 0.15 au and, 48 years later, in comets PanSTARRS and ISON at rh = 0.46 au. The alkali tail photoionization model provides a Na/K ratio close to the solar value. No lithium was detected in any comet: the lower limit of the Na/Li ratio was almost one order of magnitude greater than the solar ratio. Here we searched for the emissions of the alkali NaI, KI, and LiI in Comets C/2020 F3 and C/2024 G3. High-resolution spectra of the comets were taken with the 0.84 m telescope at the Schiaparell"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.02343","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/2506.02343/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":"2026-07-05T11:33:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TlddceGJCN6Bo/2Fwvq8memTw/7iAJ0P9TKtSrz+vhx8no8Hq1N5x8qjIMvJHkUHELWjgNOHJRRgg16+sOBPCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T00:12:26.293805Z"},"content_sha256":"9e3734c779a55546aa4cc4e461c53ee5b33f8393b7573c844999ce1ceca72cca","schema_version":"1.0","event_id":"sha256:9e3734c779a55546aa4cc4e461c53ee5b33f8393b7573c844999ce1ceca72cca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X6H34I3QYNSI7NMQAFUKAIXR4E/bundle.json","state_url":"https://pith.science/pith/X6H34I3QYNSI7NMQAFUKAIXR4E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X6H34I3QYNSI7NMQAFUKAIXR4E/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":"2026-08-18T00:12:26Z","links":{"resolver":"https://pith.science/pith/X6H34I3QYNSI7NMQAFUKAIXR4E","bundle":"https://pith.science/pith/X6H34I3QYNSI7NMQAFUKAIXR4E/bundle.json","state":"https://pith.science/pith/X6H34I3QYNSI7NMQAFUKAIXR4E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X6H34I3QYNSI7NMQAFUKAIXR4E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:X6H34I3QYNSI7NMQAFUKAIXR4E","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":"84fa67c07745a8ae87dd9a410eaeebd0200f2f7142b6b9c1fe1174cdb81f71dd","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-06-03T00:46:55Z","title_canon_sha256":"c4e9b8011d0493ddd077ba643814a4178301143c5b72bb3dc2a7e9df48328f64"},"schema_version":"1.0","source":{"id":"2506.02343","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.02343","created_at":"2026-07-05T11:33:51Z"},{"alias_kind":"arxiv_version","alias_value":"2506.02343v1","created_at":"2026-07-05T11:33:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.02343","created_at":"2026-07-05T11:33:51Z"},{"alias_kind":"pith_short_12","alias_value":"X6H34I3QYNSI","created_at":"2026-07-05T11:33:51Z"},{"alias_kind":"pith_short_16","alias_value":"X6H34I3QYNSI7NMQ","created_at":"2026-07-05T11:33:51Z"},{"alias_kind":"pith_short_8","alias_value":"X6H34I3Q","created_at":"2026-07-05T11:33:51Z"}],"graph_snapshots":[{"event_id":"sha256:9e3734c779a55546aa4cc4e461c53ee5b33f8393b7573c844999ce1ceca72cca","target":"graph","created_at":"2026-07-05T11:33:51Z","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/2506.02343/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Potassium was first detected in spectra of the sungrazer comet Ikeya-Seki at the heliocentric distance rh = 0.15 au and, 48 years later, in comets PanSTARRS and ISON at rh = 0.46 au. The alkali tail photoionization model provides a Na/K ratio close to the solar value. No lithium was detected in any comet: the lower limit of the Na/Li ratio was almost one order of magnitude greater than the solar ratio. Here we searched for the emissions of the alkali NaI, KI, and LiI in Comets C/2020 F3 and C/2024 G3. High-resolution spectra of the comets were taken with the 0.84 m telescope at the Schiaparell","authors_text":"A. Aletti, A. Rotundi, L. Buzzi, L. Tonietti, M. Fulle, P. Molaro, P. Valisa","cross_cats":["astro-ph.IM"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-06-03T00:46:55Z","title":"Alkali phenoxides in comets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.02343","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":"sha256:4f4e4f9bbd04e642f60208e06d9fb49a820e89635d04bd0c8412f0c0c2388447","target":"record","created_at":"2026-07-05T11:33:51Z","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":"84fa67c07745a8ae87dd9a410eaeebd0200f2f7142b6b9c1fe1174cdb81f71dd","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-06-03T00:46:55Z","title_canon_sha256":"c4e9b8011d0493ddd077ba643814a4178301143c5b72bb3dc2a7e9df48328f64"},"schema_version":"1.0","source":{"id":"2506.02343","kind":"arxiv","version":1}},"canonical_sha256":"bf8fbe2370c3648fb5900168a022f1e13b45efafa38f447ce2ece0fd191a91dd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf8fbe2370c3648fb5900168a022f1e13b45efafa38f447ce2ece0fd191a91dd","first_computed_at":"2026-07-05T11:33:51.969710Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:33:51.969710Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"R/ku2hwMNzJx59d+AxKBemGPqPxJkC7nbWKK81uI/BbeiXInHszqxoDAJqv/wY5No0+L3k58XBSAXkQnuKBlAg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:33:51.970164Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.02343","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4f4e4f9bbd04e642f60208e06d9fb49a820e89635d04bd0c8412f0c0c2388447","sha256:9e3734c779a55546aa4cc4e461c53ee5b33f8393b7573c844999ce1ceca72cca"],"state_sha256":"4397183f7fcde3e9c624173c78a0fb3ab8c0f9bb4fd39b3c1f92b17c7d3b9295"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3YVFi6xQ5cAj5ukJc8T7g5N05/g7q75RB+8Zl2rW6BpYxltD7t+QYSXjQF4aUTBebmBw9NA/uNy6fZ1OBT21AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T00:12:26.300240Z","bundle_sha256":"2564a6aa814ee843e00c10c3b6684175b18aac482cce03f1aeb2c6db8bd6de30"}}