{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:CLRNC4DGZRAIXPLTRSWHNIQQI4","short_pith_number":"pith:CLRNC4DG","canonical_record":{"source":{"id":"astro-ph/9908265","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-08-24T11:44:15Z","cross_cats_sorted":[],"title_canon_sha256":"1c678649fa3ea8dd6ccc1333a80439889a4681f5d750737da6e435aee6a47d8d","abstract_canon_sha256":"b0d80a75ca33cc99d3bcf60ea73da62813023ca226ac16c982b683cce4d39920"},"schema_version":"1.0"},"canonical_sha256":"12e2d17066cc408bbd738cac76a21047278595bd484f63e48c7f8041361df3bf","source":{"kind":"arxiv","id":"astro-ph/9908265","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9908265","created_at":"2026-05-18T01:07:36Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9908265v1","created_at":"2026-05-18T01:07:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9908265","created_at":"2026-05-18T01:07:36Z"},{"alias_kind":"pith_short_12","alias_value":"CLRNC4DGZRAI","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"CLRNC4DGZRAIXPLT","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"CLRNC4DG","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:CLRNC4DGZRAIXPLTRSWHNIQQI4","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9908265","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-08-24T11:44:15Z","cross_cats_sorted":[],"title_canon_sha256":"1c678649fa3ea8dd6ccc1333a80439889a4681f5d750737da6e435aee6a47d8d","abstract_canon_sha256":"b0d80a75ca33cc99d3bcf60ea73da62813023ca226ac16c982b683cce4d39920"},"schema_version":"1.0"},"canonical_sha256":"12e2d17066cc408bbd738cac76a21047278595bd484f63e48c7f8041361df3bf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:36.126609Z","signature_b64":"eCUnmw0noXqdGsJZuczycoKlGij62wWaOOwlA3wwsxwPiJ+NZlCsHlf8ngVtBo5k2QSbBbiUrzLRAfrLPHh1AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"12e2d17066cc408bbd738cac76a21047278595bd484f63e48c7f8041361df3bf","last_reissued_at":"2026-05-18T01:07:36.126067Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:36.126067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9908265","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":"2026-05-18T01:07:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0rVdfT2tmMnxGz3Lr4RpxYS1gFZsqw1E0qgfuJqAeJmiXClO7SxDfuT5zfTNYWVnfKxvUX1IdN8ICeFqEccLDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T22:19:40.018489Z"},"content_sha256":"be57e4fbe9ac8a006f02c5c77e70fdc7a5a857dad00f7bc4721c08821ea0764a","schema_version":"1.0","event_id":"sha256:be57e4fbe9ac8a006f02c5c77e70fdc7a5a857dad00f7bc4721c08821ea0764a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:CLRNC4DGZRAIXPLTRSWHNIQQI4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Medium-resolution optical spectroscopy of young stellar and sub-stellar M-dwarfs in the Cha I dark cloud","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Fernando Comeron (ESO Garching), Ralph Neuhaeuser (MPE Garching)","submitted_at":"1999-08-24T11:44:15Z","abstract_excerpt":"We obtained medium-resolution spectra of the bona-fide brown dwarf Cha H$\\alpha$ 1, the five brown dwarf candidates Cha H$\\alpha$ 2 to 6, two additional late M-type brown dwarf candidates, all originally selected by H$\\alpha$ emission, and four previously known T Tauri stars, all located in Chamaeleon I. The spectral types of our targets range down to M8. We show their spectra and also list their IJK magnitudes from DENIS. All objects have radial velocities consistent with kinematic membership to Cha I and show Li 6708\\AA absorption. Our Cha I brown dwarf candidates with lithium are young or s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9908265","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":"2026-05-18T01:07:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NH0ayJu9KC8XT732h3epJJEO9O0xVGAWUMRXFYwL/irZLGbWpCOm1SetBPo8JMgBEkWNIQDUnvR2fpfz5plYAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T22:19:40.018844Z"},"content_sha256":"649e7df400cdf4fb84f98f3e8915fcea8597684109c3241179787341d0e376ba","schema_version":"1.0","event_id":"sha256:649e7df400cdf4fb84f98f3e8915fcea8597684109c3241179787341d0e376ba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CLRNC4DGZRAIXPLTRSWHNIQQI4/bundle.json","state_url":"https://pith.science/pith/CLRNC4DGZRAIXPLTRSWHNIQQI4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CLRNC4DGZRAIXPLTRSWHNIQQI4/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":"2026-05-27T22:19:40Z","links":{"resolver":"https://pith.science/pith/CLRNC4DGZRAIXPLTRSWHNIQQI4","bundle":"https://pith.science/pith/CLRNC4DGZRAIXPLTRSWHNIQQI4/bundle.json","state":"https://pith.science/pith/CLRNC4DGZRAIXPLTRSWHNIQQI4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CLRNC4DGZRAIXPLTRSWHNIQQI4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:CLRNC4DGZRAIXPLTRSWHNIQQI4","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":"b0d80a75ca33cc99d3bcf60ea73da62813023ca226ac16c982b683cce4d39920","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-08-24T11:44:15Z","title_canon_sha256":"1c678649fa3ea8dd6ccc1333a80439889a4681f5d750737da6e435aee6a47d8d"},"schema_version":"1.0","source":{"id":"astro-ph/9908265","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9908265","created_at":"2026-05-18T01:07:36Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9908265v1","created_at":"2026-05-18T01:07:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9908265","created_at":"2026-05-18T01:07:36Z"},{"alias_kind":"pith_short_12","alias_value":"CLRNC4DGZRAI","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"CLRNC4DGZRAIXPLT","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"CLRNC4DG","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:649e7df400cdf4fb84f98f3e8915fcea8597684109c3241179787341d0e376ba","target":"graph","created_at":"2026-05-18T01:07:36Z","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 obtained medium-resolution spectra of the bona-fide brown dwarf Cha H$\\alpha$ 1, the five brown dwarf candidates Cha H$\\alpha$ 2 to 6, two additional late M-type brown dwarf candidates, all originally selected by H$\\alpha$ emission, and four previously known T Tauri stars, all located in Chamaeleon I. The spectral types of our targets range down to M8. We show their spectra and also list their IJK magnitudes from DENIS. All objects have radial velocities consistent with kinematic membership to Cha I and show Li 6708\\AA absorption. Our Cha I brown dwarf candidates with lithium are young or s","authors_text":"Fernando Comeron (ESO Garching), Ralph Neuhaeuser (MPE Garching)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1999-08-24T11:44:15Z","title":"Medium-resolution optical spectroscopy of young stellar and sub-stellar M-dwarfs in the Cha I dark cloud"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9908265","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:be57e4fbe9ac8a006f02c5c77e70fdc7a5a857dad00f7bc4721c08821ea0764a","target":"record","created_at":"2026-05-18T01:07:36Z","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":"b0d80a75ca33cc99d3bcf60ea73da62813023ca226ac16c982b683cce4d39920","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-08-24T11:44:15Z","title_canon_sha256":"1c678649fa3ea8dd6ccc1333a80439889a4681f5d750737da6e435aee6a47d8d"},"schema_version":"1.0","source":{"id":"astro-ph/9908265","kind":"arxiv","version":1}},"canonical_sha256":"12e2d17066cc408bbd738cac76a21047278595bd484f63e48c7f8041361df3bf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"12e2d17066cc408bbd738cac76a21047278595bd484f63e48c7f8041361df3bf","first_computed_at":"2026-05-18T01:07:36.126067Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:36.126067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eCUnmw0noXqdGsJZuczycoKlGij62wWaOOwlA3wwsxwPiJ+NZlCsHlf8ngVtBo5k2QSbBbiUrzLRAfrLPHh1AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:36.126609Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9908265","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:be57e4fbe9ac8a006f02c5c77e70fdc7a5a857dad00f7bc4721c08821ea0764a","sha256:649e7df400cdf4fb84f98f3e8915fcea8597684109c3241179787341d0e376ba"],"state_sha256":"9b3fc39ced5f227676c3e419459ca426b36c449735b5b8a9a357da09892534bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i3n58Ee1j6CiXd53rZrwkga/5nCIEVVV4curQoZJrd0OreLs65o+dwVhD5+c3N46RYvDsVoH4CRfDPQzrodYDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T22:19:40.020911Z","bundle_sha256":"398196e86b9121fd779ac277042626ebdcc1c97cb38d15226b8f29297880e269"}}