{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:3E2KSVDVWVAU2J6LTIXXQRWLAD","short_pith_number":"pith:3E2KSVDV","canonical_record":{"source":{"id":"1501.00544","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-01-03T09:01:28Z","cross_cats_sorted":[],"title_canon_sha256":"0b2a54f347840fb430ccdfbbd70b9ab2f5e972b027a91ab1bc68c549ec65390e","abstract_canon_sha256":"356ec7d4f13e1538f67d6302d7a75afceb5a1c62eff88b1b60fa99377225e844"},"schema_version":"1.0"},"canonical_sha256":"d934a95475b5414d27cb9a2f7846cb00f4ecc2b0fee8fec877730f7289dceba9","source":{"kind":"arxiv","id":"1501.00544","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.00544","created_at":"2026-05-18T01:41:14Z"},{"alias_kind":"arxiv_version","alias_value":"1501.00544v1","created_at":"2026-05-18T01:41:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.00544","created_at":"2026-05-18T01:41:14Z"},{"alias_kind":"pith_short_12","alias_value":"3E2KSVDVWVAU","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"3E2KSVDVWVAU2J6L","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"3E2KSVDV","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:3E2KSVDVWVAU2J6LTIXXQRWLAD","target":"record","payload":{"canonical_record":{"source":{"id":"1501.00544","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-01-03T09:01:28Z","cross_cats_sorted":[],"title_canon_sha256":"0b2a54f347840fb430ccdfbbd70b9ab2f5e972b027a91ab1bc68c549ec65390e","abstract_canon_sha256":"356ec7d4f13e1538f67d6302d7a75afceb5a1c62eff88b1b60fa99377225e844"},"schema_version":"1.0"},"canonical_sha256":"d934a95475b5414d27cb9a2f7846cb00f4ecc2b0fee8fec877730f7289dceba9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:14.775167Z","signature_b64":"sJX6jvVV7njItqTV2KYK2BZmnp6Ph4NUVV0JmEE+JVKQDl7ouiCvwkhD6+0xIT+cQ4BeC+OVrs0o+Y2j+nudCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d934a95475b5414d27cb9a2f7846cb00f4ecc2b0fee8fec877730f7289dceba9","last_reissued_at":"2026-05-18T01:41:14.774564Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:14.774564Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.00544","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":"2026-05-18T01:41:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J1YnxcPK7mJhrzrS4/PoCPk19VKQocY3UBzY7Jgm6XSTqHrmuw/ol0pXrwrAEnMH/+Yw82OdYgl5S8ll5fSPBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T07:40:30.493111Z"},"content_sha256":"981fee3309d2b522816a8993c577cdf72eafccd2acaded5392bb568925d5b011","schema_version":"1.0","event_id":"sha256:981fee3309d2b522816a8993c577cdf72eafccd2acaded5392bb568925d5b011"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:3E2KSVDVWVAU2J6LTIXXQRWLAD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the need of the Light Elements Primary Process (LEPP)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Carlos Abia, Luciano Piersanti, Oscar Straniero, Sergio Cristallo","submitted_at":"2015-01-03T09:01:28Z","abstract_excerpt":"Extant chemical evolution models underestimate the Galactic production of Sr, Y and Zr as well as the Solar System abundances of s-only isotopes with 90<A<130. To solve this problem, an additional (unknown) process has been invoked, the so-called LEPP (Light Element Primary Process). In this paper we investigate possible alternative solutions. Basing on Full Network Stellar evolutionary calculations, we investigate the effects on the Solar System s-only distribution induced by the inclusion of some commonly ignored physical processes (e.g. rotation) or by the variation of the treatment of conv"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.00544","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":"2026-05-18T01:41:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VZN5t2ktQuna+jFE9qUkT489cEN+wzjGDkRB08+60P18Q5HINoLUE90jAqcGLqD4bKCKZj+qeBfN+rnaKLdEDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T07:40:30.493911Z"},"content_sha256":"a75da43c242c2d8bed77f0540f574225d50c8ed29d528d680cd707e55123dd2f","schema_version":"1.0","event_id":"sha256:a75da43c242c2d8bed77f0540f574225d50c8ed29d528d680cd707e55123dd2f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3E2KSVDVWVAU2J6LTIXXQRWLAD/bundle.json","state_url":"https://pith.science/pith/3E2KSVDVWVAU2J6LTIXXQRWLAD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3E2KSVDVWVAU2J6LTIXXQRWLAD/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":"2026-05-31T07:40:30Z","links":{"resolver":"https://pith.science/pith/3E2KSVDVWVAU2J6LTIXXQRWLAD","bundle":"https://pith.science/pith/3E2KSVDVWVAU2J6LTIXXQRWLAD/bundle.json","state":"https://pith.science/pith/3E2KSVDVWVAU2J6LTIXXQRWLAD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3E2KSVDVWVAU2J6LTIXXQRWLAD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:3E2KSVDVWVAU2J6LTIXXQRWLAD","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":"356ec7d4f13e1538f67d6302d7a75afceb5a1c62eff88b1b60fa99377225e844","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-01-03T09:01:28Z","title_canon_sha256":"0b2a54f347840fb430ccdfbbd70b9ab2f5e972b027a91ab1bc68c549ec65390e"},"schema_version":"1.0","source":{"id":"1501.00544","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.00544","created_at":"2026-05-18T01:41:14Z"},{"alias_kind":"arxiv_version","alias_value":"1501.00544v1","created_at":"2026-05-18T01:41:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.00544","created_at":"2026-05-18T01:41:14Z"},{"alias_kind":"pith_short_12","alias_value":"3E2KSVDVWVAU","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"3E2KSVDVWVAU2J6L","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"3E2KSVDV","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:a75da43c242c2d8bed77f0540f574225d50c8ed29d528d680cd707e55123dd2f","target":"graph","created_at":"2026-05-18T01:41:14Z","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":"Extant chemical evolution models underestimate the Galactic production of Sr, Y and Zr as well as the Solar System abundances of s-only isotopes with 90<A<130. To solve this problem, an additional (unknown) process has been invoked, the so-called LEPP (Light Element Primary Process). In this paper we investigate possible alternative solutions. Basing on Full Network Stellar evolutionary calculations, we investigate the effects on the Solar System s-only distribution induced by the inclusion of some commonly ignored physical processes (e.g. rotation) or by the variation of the treatment of conv","authors_text":"Carlos Abia, Luciano Piersanti, Oscar Straniero, Sergio Cristallo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-01-03T09:01:28Z","title":"On the need of the Light Elements Primary Process (LEPP)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.00544","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":"sha256:981fee3309d2b522816a8993c577cdf72eafccd2acaded5392bb568925d5b011","target":"record","created_at":"2026-05-18T01:41:14Z","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":"356ec7d4f13e1538f67d6302d7a75afceb5a1c62eff88b1b60fa99377225e844","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-01-03T09:01:28Z","title_canon_sha256":"0b2a54f347840fb430ccdfbbd70b9ab2f5e972b027a91ab1bc68c549ec65390e"},"schema_version":"1.0","source":{"id":"1501.00544","kind":"arxiv","version":1}},"canonical_sha256":"d934a95475b5414d27cb9a2f7846cb00f4ecc2b0fee8fec877730f7289dceba9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d934a95475b5414d27cb9a2f7846cb00f4ecc2b0fee8fec877730f7289dceba9","first_computed_at":"2026-05-18T01:41:14.774564Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:14.774564Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sJX6jvVV7njItqTV2KYK2BZmnp6Ph4NUVV0JmEE+JVKQDl7ouiCvwkhD6+0xIT+cQ4BeC+OVrs0o+Y2j+nudCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:14.775167Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.00544","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:981fee3309d2b522816a8993c577cdf72eafccd2acaded5392bb568925d5b011","sha256:a75da43c242c2d8bed77f0540f574225d50c8ed29d528d680cd707e55123dd2f"],"state_sha256":"1ba6f3449a95be5cc3bda8fbcecce6e9863cd0ab8b5748718480babf55787cf6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JxM4mnTvLUIQZGqNqNgbO+0Vv4k5bP87IVY5EtJyQcxO6H0yi0wG/sazdJpOPQxIJrlL3z3sXl9Ly82ScMLhBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T07:40:30.497829Z","bundle_sha256":"7ccbc716ebdc0c954521e7dbd7c9d8c4e64e62849cc85ac75e10b90f96b7791d"}}