{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:L3L4KLMRCNCVNU72DE5XKMN4R3","short_pith_number":"pith:L3L4KLMR","canonical_record":{"source":{"id":"1207.3081","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-12T20:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"ee7f3437795956297b6fe46fd6ed11daaa52bc1f2ced0dd56583583d46ad3b24","abstract_canon_sha256":"e9ab57305c171996f2c60b120a0203f28618382bf0555a12b4de444ecff3916a"},"schema_version":"1.0"},"canonical_sha256":"5ed7c52d91134556d3fa193b7531bc8ec0f5306c2ef6b31e5e5ec34019c566c2","source":{"kind":"arxiv","id":"1207.3081","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.3081","created_at":"2026-05-18T02:21:08Z"},{"alias_kind":"arxiv_version","alias_value":"1207.3081v4","created_at":"2026-05-18T02:21:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.3081","created_at":"2026-05-18T02:21:08Z"},{"alias_kind":"pith_short_12","alias_value":"L3L4KLMRCNCV","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"L3L4KLMRCNCVNU72","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"L3L4KLMR","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:L3L4KLMRCNCVNU72DE5XKMN4R3","target":"record","payload":{"canonical_record":{"source":{"id":"1207.3081","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-12T20:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"ee7f3437795956297b6fe46fd6ed11daaa52bc1f2ced0dd56583583d46ad3b24","abstract_canon_sha256":"e9ab57305c171996f2c60b120a0203f28618382bf0555a12b4de444ecff3916a"},"schema_version":"1.0"},"canonical_sha256":"5ed7c52d91134556d3fa193b7531bc8ec0f5306c2ef6b31e5e5ec34019c566c2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:21:08.333739Z","signature_b64":"WDmIBVdDQd886ICq+uXV3cJEeRIzu6JGp6LSCQLVetQwQ+R/4/7uyhapKkANwDgUpQwTwTU5/jBkiQH0I6kBDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5ed7c52d91134556d3fa193b7531bc8ec0f5306c2ef6b31e5e5ec34019c566c2","last_reissued_at":"2026-05-18T02:21:08.333151Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:21:08.333151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.3081","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:21:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Zl5HASw+XXdXyRdAJkSLYL28Mg6WWwjF1BedPq7yg+y+XAZ2wSxagQyclq8//s3v5PFgDLbVF3R1w2kbaqtAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T00:03:22.421370Z"},"content_sha256":"e685e2494adee89ff1164fce2d47f0800351e49eb87a3709dad0dde904c7686c","schema_version":"1.0","event_id":"sha256:e685e2494adee89ff1164fce2d47f0800351e49eb87a3709dad0dde904c7686c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:L3L4KLMRCNCVNU72DE5XKMN4R3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of interstellar lithium in the low-metallicity Small Magellanic Cloud","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Brian D. Fields, Grant J. Mathews, J. Christopher Howk, Nicolas Lehner","submitted_at":"2012-07-12T20:00:02Z","abstract_excerpt":"The primordial abundances of light elements produced in the standard theory of Big Bang nucleosynthesis (BBN) depend only on the cosmic ratio of baryons to photons, a quantity inferred from observations of the microwave background. The predicted primordial 7Li abundance is four times that measured in the atmospheres of Galactic halo stars. This discrepancy could be caused by modification of surface lithium abundances during the stars' lifetimes or by physics beyond the Standard Model that affects early nucleosynthesis. The lithium abundance of low-metallicity gas provides an alternative constr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.3081","kind":"arxiv","version":4},"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":"2026-05-18T02:21:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ACRVIti/dhlRtl66rfRHoeHGyY2js27ePVwe9MnbIYMfrSukB5eHhJJd2k62FyZsWcDH4LmI4NojAnOuUETBBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T00:03:22.421784Z"},"content_sha256":"6aeaaabeb7f9f29c78e2fe6814cac1db2446786650bab4fa97b6e209eb6de173","schema_version":"1.0","event_id":"sha256:6aeaaabeb7f9f29c78e2fe6814cac1db2446786650bab4fa97b6e209eb6de173"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/L3L4KLMRCNCVNU72DE5XKMN4R3/bundle.json","state_url":"https://pith.science/pith/L3L4KLMRCNCVNU72DE5XKMN4R3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/L3L4KLMRCNCVNU72DE5XKMN4R3/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":"2026-05-23T00:03:22Z","links":{"resolver":"https://pith.science/pith/L3L4KLMRCNCVNU72DE5XKMN4R3","bundle":"https://pith.science/pith/L3L4KLMRCNCVNU72DE5XKMN4R3/bundle.json","state":"https://pith.science/pith/L3L4KLMRCNCVNU72DE5XKMN4R3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/L3L4KLMRCNCVNU72DE5XKMN4R3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:L3L4KLMRCNCVNU72DE5XKMN4R3","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":"e9ab57305c171996f2c60b120a0203f28618382bf0555a12b4de444ecff3916a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-12T20:00:02Z","title_canon_sha256":"ee7f3437795956297b6fe46fd6ed11daaa52bc1f2ced0dd56583583d46ad3b24"},"schema_version":"1.0","source":{"id":"1207.3081","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.3081","created_at":"2026-05-18T02:21:08Z"},{"alias_kind":"arxiv_version","alias_value":"1207.3081v4","created_at":"2026-05-18T02:21:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.3081","created_at":"2026-05-18T02:21:08Z"},{"alias_kind":"pith_short_12","alias_value":"L3L4KLMRCNCV","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"L3L4KLMRCNCVNU72","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"L3L4KLMR","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:6aeaaabeb7f9f29c78e2fe6814cac1db2446786650bab4fa97b6e209eb6de173","target":"graph","created_at":"2026-05-18T02:21:08Z","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":"The primordial abundances of light elements produced in the standard theory of Big Bang nucleosynthesis (BBN) depend only on the cosmic ratio of baryons to photons, a quantity inferred from observations of the microwave background. The predicted primordial 7Li abundance is four times that measured in the atmospheres of Galactic halo stars. This discrepancy could be caused by modification of surface lithium abundances during the stars' lifetimes or by physics beyond the Standard Model that affects early nucleosynthesis. The lithium abundance of low-metallicity gas provides an alternative constr","authors_text":"Brian D. Fields, Grant J. Mathews, J. Christopher Howk, Nicolas Lehner","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-12T20:00:02Z","title":"Observation of interstellar lithium in the low-metallicity Small Magellanic Cloud"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.3081","kind":"arxiv","version":4},"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:e685e2494adee89ff1164fce2d47f0800351e49eb87a3709dad0dde904c7686c","target":"record","created_at":"2026-05-18T02:21:08Z","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":"e9ab57305c171996f2c60b120a0203f28618382bf0555a12b4de444ecff3916a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-12T20:00:02Z","title_canon_sha256":"ee7f3437795956297b6fe46fd6ed11daaa52bc1f2ced0dd56583583d46ad3b24"},"schema_version":"1.0","source":{"id":"1207.3081","kind":"arxiv","version":4}},"canonical_sha256":"5ed7c52d91134556d3fa193b7531bc8ec0f5306c2ef6b31e5e5ec34019c566c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5ed7c52d91134556d3fa193b7531bc8ec0f5306c2ef6b31e5e5ec34019c566c2","first_computed_at":"2026-05-18T02:21:08.333151Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:21:08.333151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WDmIBVdDQd886ICq+uXV3cJEeRIzu6JGp6LSCQLVetQwQ+R/4/7uyhapKkANwDgUpQwTwTU5/jBkiQH0I6kBDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:21:08.333739Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.3081","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e685e2494adee89ff1164fce2d47f0800351e49eb87a3709dad0dde904c7686c","sha256:6aeaaabeb7f9f29c78e2fe6814cac1db2446786650bab4fa97b6e209eb6de173"],"state_sha256":"2a21aa6f8b6befc9fbfde2c4067d09c9992981b7a03f43afe648d069ae5c28aa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hz6aJtOpn7n1CssTSD/JBZXpHEksoh7oPEOgATCmONU8D4bWq5koDA+w/miQTa/C1iqoxoxIg/2TUzbeHrS5DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T00:03:22.424060Z","bundle_sha256":"892ca0cd23cdb801f156be10fe1d2a5badf606e91b0102c7101c80317c53178d"}}