{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:M2TT6M5RM4LBH7VD3TPRSTTKK5","short_pith_number":"pith:M2TT6M5R","canonical_record":{"source":{"id":"astro-ph/9912530","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-12-28T06:03:10Z","cross_cats_sorted":[],"title_canon_sha256":"da663919104c52f137930a1664d8248742acb433cf84df39f8633287831dbf32","abstract_canon_sha256":"9a80603eaefaa924b1886eb5c98749143cc9d28debdcc085f40c6b6e1a52c891"},"schema_version":"1.0"},"canonical_sha256":"66a73f33b1671613fea3dcdf194e6a5760173694e2ebf969caa56b86bd7fbefd","source":{"kind":"arxiv","id":"astro-ph/9912530","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9912530","created_at":"2026-05-18T01:40:12Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9912530v1","created_at":"2026-05-18T01:40:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9912530","created_at":"2026-05-18T01:40:12Z"},{"alias_kind":"pith_short_12","alias_value":"M2TT6M5RM4LB","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"M2TT6M5RM4LBH7VD","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"M2TT6M5R","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:M2TT6M5RM4LBH7VD3TPRSTTKK5","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9912530","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-12-28T06:03:10Z","cross_cats_sorted":[],"title_canon_sha256":"da663919104c52f137930a1664d8248742acb433cf84df39f8633287831dbf32","abstract_canon_sha256":"9a80603eaefaa924b1886eb5c98749143cc9d28debdcc085f40c6b6e1a52c891"},"schema_version":"1.0"},"canonical_sha256":"66a73f33b1671613fea3dcdf194e6a5760173694e2ebf969caa56b86bd7fbefd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:12.190568Z","signature_b64":"J/yikSKgE/mt2FKdlYGccIoHaCN6l6ztV5ZR/BxKQDYvyXulLkDtx2TfCQtiY9kYbkhbIOjsElm+xbT7QQEdCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"66a73f33b1671613fea3dcdf194e6a5760173694e2ebf969caa56b86bd7fbefd","last_reissued_at":"2026-05-18T01:40:12.189946Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:12.189946Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9912530","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":"2026-05-18T01:40:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PiIFfyJUKUPijmYQBg4M78t268ERsDO8dCa3lkoLhyZIZ5rQ3h0tae+ahcD8lV5qgYHC1CHGYipzQnUOWhJMCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T14:36:49.514596Z"},"content_sha256":"bd74097884bf429dbf0d58ca7b931597361ba8ed8ffac59f9fc78f1d0e9b66f7","schema_version":"1.0","event_id":"sha256:bd74097884bf429dbf0d58ca7b931597361ba8ed8ffac59f9fc78f1d0e9b66f7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:M2TT6M5RM4LBH7VD3TPRSTTKK5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Near-Infrared Spectroscopy of the Cool Brown Dwarf, SDSS 1624+00","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Fumihide Iwamuro, Ken-taro Motohara, Motohide Tamura, Ryuji Hata, Tadashi Nakajima, Takashi Tsuji, Takuya Yamashita, Tomoyuki Taguchi, Toshinori Maihara","submitted_at":"1999-12-28T06:03:10Z","abstract_excerpt":"Using the Subaru Telescope, we have obtained multiple near-infrared spectra of the cool brown dwarf, SDSS 1624+00, in search of spectral variability in an 80 minute time span. We have found the suspected variability of water vapor absorption throughout the observations, which requires confirmation by a longer time baseline. After coadding the spectra, we have obtained a high-quality spectrum covering 1.05 to 1.8 um. Three kinds of spectral indicators, the water vapor bands, methane band, and KI lines in J band, suggest that SDSS 1624+00 is warmer and dustier than Gl 229B."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9912530","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":"2026-05-18T01:40:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dkP9kDt4ZQ8J9fZcVw2q5jMTDkuPrNp8li7z8egAC9OUpxoIyJmeYShF5Aig7UoQ/NcpTRryKrmoDi/ux6BEDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T14:36:49.515306Z"},"content_sha256":"d642fbd3ad57b82817e6389c15d4c51315f829c721e8755b3442bc3ca60270aa","schema_version":"1.0","event_id":"sha256:d642fbd3ad57b82817e6389c15d4c51315f829c721e8755b3442bc3ca60270aa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M2TT6M5RM4LBH7VD3TPRSTTKK5/bundle.json","state_url":"https://pith.science/pith/M2TT6M5RM4LBH7VD3TPRSTTKK5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M2TT6M5RM4LBH7VD3TPRSTTKK5/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":"2026-05-29T14:36:49Z","links":{"resolver":"https://pith.science/pith/M2TT6M5RM4LBH7VD3TPRSTTKK5","bundle":"https://pith.science/pith/M2TT6M5RM4LBH7VD3TPRSTTKK5/bundle.json","state":"https://pith.science/pith/M2TT6M5RM4LBH7VD3TPRSTTKK5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M2TT6M5RM4LBH7VD3TPRSTTKK5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:M2TT6M5RM4LBH7VD3TPRSTTKK5","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":"9a80603eaefaa924b1886eb5c98749143cc9d28debdcc085f40c6b6e1a52c891","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-12-28T06:03:10Z","title_canon_sha256":"da663919104c52f137930a1664d8248742acb433cf84df39f8633287831dbf32"},"schema_version":"1.0","source":{"id":"astro-ph/9912530","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9912530","created_at":"2026-05-18T01:40:12Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9912530v1","created_at":"2026-05-18T01:40:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9912530","created_at":"2026-05-18T01:40:12Z"},{"alias_kind":"pith_short_12","alias_value":"M2TT6M5RM4LB","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"M2TT6M5RM4LBH7VD","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"M2TT6M5R","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:d642fbd3ad57b82817e6389c15d4c51315f829c721e8755b3442bc3ca60270aa","target":"graph","created_at":"2026-05-18T01:40:12Z","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":"Using the Subaru Telescope, we have obtained multiple near-infrared spectra of the cool brown dwarf, SDSS 1624+00, in search of spectral variability in an 80 minute time span. We have found the suspected variability of water vapor absorption throughout the observations, which requires confirmation by a longer time baseline. After coadding the spectra, we have obtained a high-quality spectrum covering 1.05 to 1.8 um. Three kinds of spectral indicators, the water vapor bands, methane band, and KI lines in J band, suggest that SDSS 1624+00 is warmer and dustier than Gl 229B.","authors_text":"Fumihide Iwamuro, Ken-taro Motohara, Motohide Tamura, Ryuji Hata, Tadashi Nakajima, Takashi Tsuji, Takuya Yamashita, Tomoyuki Taguchi, Toshinori Maihara","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1999-12-28T06:03:10Z","title":"Near-Infrared Spectroscopy of the Cool Brown Dwarf, SDSS 1624+00"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9912530","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:bd74097884bf429dbf0d58ca7b931597361ba8ed8ffac59f9fc78f1d0e9b66f7","target":"record","created_at":"2026-05-18T01:40:12Z","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":"9a80603eaefaa924b1886eb5c98749143cc9d28debdcc085f40c6b6e1a52c891","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-12-28T06:03:10Z","title_canon_sha256":"da663919104c52f137930a1664d8248742acb433cf84df39f8633287831dbf32"},"schema_version":"1.0","source":{"id":"astro-ph/9912530","kind":"arxiv","version":1}},"canonical_sha256":"66a73f33b1671613fea3dcdf194e6a5760173694e2ebf969caa56b86bd7fbefd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"66a73f33b1671613fea3dcdf194e6a5760173694e2ebf969caa56b86bd7fbefd","first_computed_at":"2026-05-18T01:40:12.189946Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:12.189946Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J/yikSKgE/mt2FKdlYGccIoHaCN6l6ztV5ZR/BxKQDYvyXulLkDtx2TfCQtiY9kYbkhbIOjsElm+xbT7QQEdCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:12.190568Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9912530","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bd74097884bf429dbf0d58ca7b931597361ba8ed8ffac59f9fc78f1d0e9b66f7","sha256:d642fbd3ad57b82817e6389c15d4c51315f829c721e8755b3442bc3ca60270aa"],"state_sha256":"ec9979e2719c5efd8daab0b43cf67ddd646274417074a5f2b75eba4a0e14bbbd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7U47induCLVeRDU86SUssUYr3mz3ebE8MTX06Rk7Up/yjjgI+o6dFobjxm1na+l57ZjcNiEMrvHnXdXL/G2dBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T14:36:49.518909Z","bundle_sha256":"438562061a6608736780e0b747a90673a6fb57a7c8371cfb18867ca6e2fb4887"}}