{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:2XAHRQOI2X5TELRBMTHGTFIENN","short_pith_number":"pith:2XAHRQOI","canonical_record":{"source":{"id":"1202.3078","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-14T16:09:16Z","cross_cats_sorted":[],"title_canon_sha256":"680acba0afb46cdc0a0d78c81bf2aa9c6456e5bacbd58ae0f0003085191d374d","abstract_canon_sha256":"0be9fe57add457ed0d6aa3406d9951a36f9d65af048c3a1cdaa4d712f113bdf4"},"schema_version":"1.0"},"canonical_sha256":"d5c078c1c8d5fb322e2164ce6995046b433cee5af74891d79ac77b40527d9863","source":{"kind":"arxiv","id":"1202.3078","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.3078","created_at":"2026-05-18T01:58:28Z"},{"alias_kind":"arxiv_version","alias_value":"1202.3078v1","created_at":"2026-05-18T01:58:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.3078","created_at":"2026-05-18T01:58:28Z"},{"alias_kind":"pith_short_12","alias_value":"2XAHRQOI2X5T","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2XAHRQOI2X5TELRB","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2XAHRQOI","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:2XAHRQOI2X5TELRBMTHGTFIENN","target":"record","payload":{"canonical_record":{"source":{"id":"1202.3078","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-14T16:09:16Z","cross_cats_sorted":[],"title_canon_sha256":"680acba0afb46cdc0a0d78c81bf2aa9c6456e5bacbd58ae0f0003085191d374d","abstract_canon_sha256":"0be9fe57add457ed0d6aa3406d9951a36f9d65af048c3a1cdaa4d712f113bdf4"},"schema_version":"1.0"},"canonical_sha256":"d5c078c1c8d5fb322e2164ce6995046b433cee5af74891d79ac77b40527d9863","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:28.587086Z","signature_b64":"MofDvSLrLA9RvsP9KtHSL2W3DKV9jJH/BQscVxwZBfQyNkU1biC4xwgoql6bGEuETZp0zi/TbU6bMle/70kCBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d5c078c1c8d5fb322e2164ce6995046b433cee5af74891d79ac77b40527d9863","last_reissued_at":"2026-05-18T01:58:28.586625Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:28.586625Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.3078","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":"2026-05-18T01:58:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TwQBtxZQdscb091N35Zzm1SismcbtUAwSx3+9o2dyT98SOLINgPffVfEXQ9HFymuB6X++h9TPF7Aey9tbVE0Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T15:23:37.523807Z"},"content_sha256":"311578d071beb137b20c1942c926063aef0e430a73e6162784a840c9dad42f7d","schema_version":"1.0","event_id":"sha256:311578d071beb137b20c1942c926063aef0e430a73e6162784a840c9dad42f7d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:2XAHRQOI2X5TELRBMTHGTFIENN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The M Dwarf Problem in the Galaxy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Andrew A. West, Vincent M. Woolf","submitted_at":"2012-02-14T16:09:16Z","abstract_excerpt":"We present evidence that there is an M dwarf problem similar to the previously identified G dwarf and K dwarf problems: the number of low-metallicity M dwarfs is not sufficient to match simple closed-box models of local Galactic chemical evolution. We estimated the metallicity of 4141 M dwarf stars with spectra from the Sloan Digital Sky Survey (SDSS) using a molecular band strength versus metallicity calibration developed using high resolution spectra of nearby M dwarfs. Using a sample of M dwarfs with measured magnitudes, parallaxes, and metallicities, we derived a relation that describes th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.3078","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":"2026-05-18T01:58:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1n54e1YkWag0jm3ycmlxicNDXknNtCpi1f/CeLiIXtQF32BOI4VDIwSengXMEA9rr1lgs/ITJBUuhQirEXvKCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T15:23:37.524252Z"},"content_sha256":"e66843d97def44103a4b218fc908839f827653fa431d736c3ce35d0af7863629","schema_version":"1.0","event_id":"sha256:e66843d97def44103a4b218fc908839f827653fa431d736c3ce35d0af7863629"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2XAHRQOI2X5TELRBMTHGTFIENN/bundle.json","state_url":"https://pith.science/pith/2XAHRQOI2X5TELRBMTHGTFIENN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2XAHRQOI2X5TELRBMTHGTFIENN/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":"2026-06-05T15:23:37Z","links":{"resolver":"https://pith.science/pith/2XAHRQOI2X5TELRBMTHGTFIENN","bundle":"https://pith.science/pith/2XAHRQOI2X5TELRBMTHGTFIENN/bundle.json","state":"https://pith.science/pith/2XAHRQOI2X5TELRBMTHGTFIENN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2XAHRQOI2X5TELRBMTHGTFIENN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:2XAHRQOI2X5TELRBMTHGTFIENN","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":"0be9fe57add457ed0d6aa3406d9951a36f9d65af048c3a1cdaa4d712f113bdf4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-14T16:09:16Z","title_canon_sha256":"680acba0afb46cdc0a0d78c81bf2aa9c6456e5bacbd58ae0f0003085191d374d"},"schema_version":"1.0","source":{"id":"1202.3078","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.3078","created_at":"2026-05-18T01:58:28Z"},{"alias_kind":"arxiv_version","alias_value":"1202.3078v1","created_at":"2026-05-18T01:58:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.3078","created_at":"2026-05-18T01:58:28Z"},{"alias_kind":"pith_short_12","alias_value":"2XAHRQOI2X5T","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2XAHRQOI2X5TELRB","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2XAHRQOI","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:e66843d97def44103a4b218fc908839f827653fa431d736c3ce35d0af7863629","target":"graph","created_at":"2026-05-18T01:58:28Z","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 present evidence that there is an M dwarf problem similar to the previously identified G dwarf and K dwarf problems: the number of low-metallicity M dwarfs is not sufficient to match simple closed-box models of local Galactic chemical evolution. We estimated the metallicity of 4141 M dwarf stars with spectra from the Sloan Digital Sky Survey (SDSS) using a molecular band strength versus metallicity calibration developed using high resolution spectra of nearby M dwarfs. Using a sample of M dwarfs with measured magnitudes, parallaxes, and metallicities, we derived a relation that describes th","authors_text":"Andrew A. West, Vincent M. Woolf","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-14T16:09:16Z","title":"The M Dwarf Problem in the Galaxy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.3078","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":"sha256:311578d071beb137b20c1942c926063aef0e430a73e6162784a840c9dad42f7d","target":"record","created_at":"2026-05-18T01:58:28Z","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":"0be9fe57add457ed0d6aa3406d9951a36f9d65af048c3a1cdaa4d712f113bdf4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-14T16:09:16Z","title_canon_sha256":"680acba0afb46cdc0a0d78c81bf2aa9c6456e5bacbd58ae0f0003085191d374d"},"schema_version":"1.0","source":{"id":"1202.3078","kind":"arxiv","version":1}},"canonical_sha256":"d5c078c1c8d5fb322e2164ce6995046b433cee5af74891d79ac77b40527d9863","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5c078c1c8d5fb322e2164ce6995046b433cee5af74891d79ac77b40527d9863","first_computed_at":"2026-05-18T01:58:28.586625Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:28.586625Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MofDvSLrLA9RvsP9KtHSL2W3DKV9jJH/BQscVxwZBfQyNkU1biC4xwgoql6bGEuETZp0zi/TbU6bMle/70kCBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:28.587086Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.3078","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:311578d071beb137b20c1942c926063aef0e430a73e6162784a840c9dad42f7d","sha256:e66843d97def44103a4b218fc908839f827653fa431d736c3ce35d0af7863629"],"state_sha256":"ee072fb177f0cb0644617634a92bf440da50d91ef68d21a2c27d2d797a5ff047"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e72KmYzHM6tk8y4ftnavs74fbVbqoZhoawq0438fAdhbduUia0MRtZ+X9bj40KEKWOLkTn4+3wAgVLOl70KjAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T15:23:37.526489Z","bundle_sha256":"73df9487327a1b973dfb52e9a40c543a094dbd9b09cb1fb45a2686ecda832870"}}