{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:UCEPNY7OD33IMDRP4PV7C2XYLU","short_pith_number":"pith:UCEPNY7O","canonical_record":{"source":{"id":"1307.6557","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-07-24T20:00:01Z","cross_cats_sorted":["astro-ph.HE","physics.ao-ph","physics.geo-ph","physics.space-ph"],"title_canon_sha256":"13afffbcba1b8b399e2264e62857189d63347dcd0f498ba5c0c237b999d921b6","abstract_canon_sha256":"e980a5e28039af1d6db80c19fe9e3af6fb1de490b88c8a4f33c161d5bf4eea5e"},"schema_version":"1.0"},"canonical_sha256":"a088f6e3ee1ef6860e2fe3ebf16af85d317955d027c851d6e1e5bc6d326f40fd","source":{"kind":"arxiv","id":"1307.6557","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.6557","created_at":"2026-05-18T03:15:05Z"},{"alias_kind":"arxiv_version","alias_value":"1307.6557v1","created_at":"2026-05-18T03:15:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.6557","created_at":"2026-05-18T03:15:05Z"},{"alias_kind":"pith_short_12","alias_value":"UCEPNY7OD33I","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"UCEPNY7OD33IMDRP","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"UCEPNY7O","created_at":"2026-05-18T12:28:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:UCEPNY7OD33IMDRP4PV7C2XYLU","target":"record","payload":{"canonical_record":{"source":{"id":"1307.6557","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-07-24T20:00:01Z","cross_cats_sorted":["astro-ph.HE","physics.ao-ph","physics.geo-ph","physics.space-ph"],"title_canon_sha256":"13afffbcba1b8b399e2264e62857189d63347dcd0f498ba5c0c237b999d921b6","abstract_canon_sha256":"e980a5e28039af1d6db80c19fe9e3af6fb1de490b88c8a4f33c161d5bf4eea5e"},"schema_version":"1.0"},"canonical_sha256":"a088f6e3ee1ef6860e2fe3ebf16af85d317955d027c851d6e1e5bc6d326f40fd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:15:05.531876Z","signature_b64":"1A4ZxfN+/y1UNCwdCEkK8VtuhDctoyFBDfo8p1mIgR/A9MI/44PpufZ2YSXA2CdBjHzIEQnaFWXTAvoH+2ZRBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a088f6e3ee1ef6860e2fe3ebf16af85d317955d027c851d6e1e5bc6d326f40fd","last_reissued_at":"2026-05-18T03:15:05.531345Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:15:05.531345Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.6557","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":"2026-05-18T03:15:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2lBPNBkVRw1Pi+HifRqyjGrVGGSP+yStBGizWhpVGsxFfXJKY7gLg1Qy3X8pTFyJaMgsFv/XTitnQoPW+D7kAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:44:15.539310Z"},"content_sha256":"cc3208dee4d5b6bb95f3e868ba0ec141a87383826ee8e8ac8955828a69d4aaf8","schema_version":"1.0","event_id":"sha256:cc3208dee4d5b6bb95f3e868ba0ec141a87383826ee8e8ac8955828a69d4aaf8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:UCEPNY7OD33IMDRP4PV7C2XYLU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmogenic nuclide enhancement via deposition from long-period comets as a test of the Younger Dryas impact hypothesis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","physics.ao-ph","physics.geo-ph","physics.space-ph"],"primary_cat":"astro-ph.EP","authors_text":"Adrian L. Melott, Andrew C. Overholt","submitted_at":"2013-07-24T20:00:01Z","abstract_excerpt":"We explore the idea that detectable excursions in 26Al may arise from direct deposition by any bolide, and excursions in 14C and 10Be abundances in the atmosphere may result from long-period comet impacts. This is very different from the usual processes of production by cosmic rays within Earths atmosphere. Long-period comets experience greatly increased cosmic ray flux beyond the protection of the suns magnetic field. We report the computed amount of 14C, 10Be, and 26Al present on long-period comets as a function of comet mass. We find that the amount of nuclide mass on large long-period come"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.6557","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":"2026-05-18T03:15:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fT2AwqJ7+dDcCRpPDkafEEXFKZz5Qnqlixi3HoI288hwmMqyS+LC8tfhMtw27dRNUZUmz2NUxL0RkjAdMTxRAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:44:15.539986Z"},"content_sha256":"0170b548bc7780a90639c04acbdbc53d7fd7e48a750116a7eba53e7aa3add8d3","schema_version":"1.0","event_id":"sha256:0170b548bc7780a90639c04acbdbc53d7fd7e48a750116a7eba53e7aa3add8d3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UCEPNY7OD33IMDRP4PV7C2XYLU/bundle.json","state_url":"https://pith.science/pith/UCEPNY7OD33IMDRP4PV7C2XYLU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UCEPNY7OD33IMDRP4PV7C2XYLU/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":"2026-05-29T22:44:15Z","links":{"resolver":"https://pith.science/pith/UCEPNY7OD33IMDRP4PV7C2XYLU","bundle":"https://pith.science/pith/UCEPNY7OD33IMDRP4PV7C2XYLU/bundle.json","state":"https://pith.science/pith/UCEPNY7OD33IMDRP4PV7C2XYLU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UCEPNY7OD33IMDRP4PV7C2XYLU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:UCEPNY7OD33IMDRP4PV7C2XYLU","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":"e980a5e28039af1d6db80c19fe9e3af6fb1de490b88c8a4f33c161d5bf4eea5e","cross_cats_sorted":["astro-ph.HE","physics.ao-ph","physics.geo-ph","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-07-24T20:00:01Z","title_canon_sha256":"13afffbcba1b8b399e2264e62857189d63347dcd0f498ba5c0c237b999d921b6"},"schema_version":"1.0","source":{"id":"1307.6557","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.6557","created_at":"2026-05-18T03:15:05Z"},{"alias_kind":"arxiv_version","alias_value":"1307.6557v1","created_at":"2026-05-18T03:15:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.6557","created_at":"2026-05-18T03:15:05Z"},{"alias_kind":"pith_short_12","alias_value":"UCEPNY7OD33I","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"UCEPNY7OD33IMDRP","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"UCEPNY7O","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:0170b548bc7780a90639c04acbdbc53d7fd7e48a750116a7eba53e7aa3add8d3","target":"graph","created_at":"2026-05-18T03:15:05Z","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":"We explore the idea that detectable excursions in 26Al may arise from direct deposition by any bolide, and excursions in 14C and 10Be abundances in the atmosphere may result from long-period comet impacts. This is very different from the usual processes of production by cosmic rays within Earths atmosphere. Long-period comets experience greatly increased cosmic ray flux beyond the protection of the suns magnetic field. We report the computed amount of 14C, 10Be, and 26Al present on long-period comets as a function of comet mass. We find that the amount of nuclide mass on large long-period come","authors_text":"Adrian L. Melott, Andrew C. Overholt","cross_cats":["astro-ph.HE","physics.ao-ph","physics.geo-ph","physics.space-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-07-24T20:00:01Z","title":"Cosmogenic nuclide enhancement via deposition from long-period comets as a test of the Younger Dryas impact hypothesis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.6557","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:cc3208dee4d5b6bb95f3e868ba0ec141a87383826ee8e8ac8955828a69d4aaf8","target":"record","created_at":"2026-05-18T03:15:05Z","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":"e980a5e28039af1d6db80c19fe9e3af6fb1de490b88c8a4f33c161d5bf4eea5e","cross_cats_sorted":["astro-ph.HE","physics.ao-ph","physics.geo-ph","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-07-24T20:00:01Z","title_canon_sha256":"13afffbcba1b8b399e2264e62857189d63347dcd0f498ba5c0c237b999d921b6"},"schema_version":"1.0","source":{"id":"1307.6557","kind":"arxiv","version":1}},"canonical_sha256":"a088f6e3ee1ef6860e2fe3ebf16af85d317955d027c851d6e1e5bc6d326f40fd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a088f6e3ee1ef6860e2fe3ebf16af85d317955d027c851d6e1e5bc6d326f40fd","first_computed_at":"2026-05-18T03:15:05.531345Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:15:05.531345Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1A4ZxfN+/y1UNCwdCEkK8VtuhDctoyFBDfo8p1mIgR/A9MI/44PpufZ2YSXA2CdBjHzIEQnaFWXTAvoH+2ZRBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:15:05.531876Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.6557","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cc3208dee4d5b6bb95f3e868ba0ec141a87383826ee8e8ac8955828a69d4aaf8","sha256:0170b548bc7780a90639c04acbdbc53d7fd7e48a750116a7eba53e7aa3add8d3"],"state_sha256":"3d8546727a6c799358ac198cfe5050399c5e3d6fe539bea84e6af3f12fdf0c2e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wR3ugEZqqX1KoJ+/PCq7vEMW8uC0pNJHDJXoXPQuy0kRKMmTYbtjjf5F0ru9yQUMD8Cj20mYpaT93+Nper6rBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T22:44:15.543496Z","bundle_sha256":"cadc5cf4de5409293ee6b6177b860b264e2e468c73930c5dbf0c7c6836125cbd"}}