{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:TOB6LS2KBVK5MEIUVYHX6PJ7FR","short_pith_number":"pith:TOB6LS2K","canonical_record":{"source":{"id":"1407.0700","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-07-02T20:00:00Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"7dbdee53ef5667c65cb5b902f16e989ea1dce68bb0210a10fe461f54f07d3f24","abstract_canon_sha256":"8c7b7fe725121928362784c16699dae3a55bae396286944f4b9bc5d03181702e"},"schema_version":"1.0"},"canonical_sha256":"9b83e5cb4a0d55d61114ae0f7f3d3f2c7cc0757a968c2594d508d38e3a5e07c7","source":{"kind":"arxiv","id":"1407.0700","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.0700","created_at":"2026-05-18T01:42:42Z"},{"alias_kind":"arxiv_version","alias_value":"1407.0700v1","created_at":"2026-05-18T01:42:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.0700","created_at":"2026-05-18T01:42:42Z"},{"alias_kind":"pith_short_12","alias_value":"TOB6LS2KBVK5","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_16","alias_value":"TOB6LS2KBVK5MEIU","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_8","alias_value":"TOB6LS2K","created_at":"2026-05-18T12:28:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:TOB6LS2KBVK5MEIUVYHX6PJ7FR","target":"record","payload":{"canonical_record":{"source":{"id":"1407.0700","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-07-02T20:00:00Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"7dbdee53ef5667c65cb5b902f16e989ea1dce68bb0210a10fe461f54f07d3f24","abstract_canon_sha256":"8c7b7fe725121928362784c16699dae3a55bae396286944f4b9bc5d03181702e"},"schema_version":"1.0"},"canonical_sha256":"9b83e5cb4a0d55d61114ae0f7f3d3f2c7cc0757a968c2594d508d38e3a5e07c7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:42.622573Z","signature_b64":"dcQbAWTq6oI37pytJi1HFN1hzVBSykfSEn12enK7KntkNA9eLshIiEvYZBGMlS0aKvNhC5Y7UoAyVow9evBaCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b83e5cb4a0d55d61114ae0f7f3d3f2c7cc0757a968c2594d508d38e3a5e07c7","last_reissued_at":"2026-05-18T01:42:42.622080Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:42.622080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.0700","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":"2026-05-18T01:42:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"80ROSpqGGx0suvZUaZ+Eegi7DARFiR0+BtQnaM6T4AVa1mGIFq6FMXBbjvrBopoxE0dXxJyhf5va/tlDa25vCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T05:23:36.389259Z"},"content_sha256":"abafd0da8e3aeb428f443fc000da86109e36f762b300aa7974c360aceab05a10","schema_version":"1.0","event_id":"sha256:abafd0da8e3aeb428f443fc000da86109e36f762b300aa7974c360aceab05a10"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:TOB6LS2KBVK5MEIUVYHX6PJ7FR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The disk around the brown dwarf KPNO Tau 3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Aleks Scholz, Antonio Chrysostomou, Brenda Matthews, Gaspard Duchene, Hannah Broekhoven-Fiene, James Di Francesco, Ray Jayawardhana","submitted_at":"2014-07-02T20:00:00Z","abstract_excerpt":"We present submillimeter observations of the young brown dwarfs KPNO Tau 1, KPNO Tau 3, and KPNO Tau 6 at 450 micron and 850 micron taken with the Submillimeter Common-User Bolometer Array on the James Clerke Maxwell Telescope. KPNO Tau 3 and KPNO Tau 6 have been previously identified as Class II objects hosting accretion disks, whereas KPNO Tau 1 has been identified as a Class III object and shows no evidence of circumsubstellar material. Our 3 sigma detection of cold dust around KPNO Tau 3 implies a total disk mass of (4.0 +/- 1.1) x 10^{-4} Msolar (assuming a gas to dust ratio of 100:1). We"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.0700","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":"2026-05-18T01:42:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dtSbTNbl1xXUkdl+kq4gLAhdDFMw69D6Sh7kS8XEClsFK//ukz1i0re5yReVKGWM9O0eriTalWwg7onNW0ttBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T05:23:36.389629Z"},"content_sha256":"be29e59e8cabc701ee0b71846270811ca1902c28ad1615f1ef28961b711acbd5","schema_version":"1.0","event_id":"sha256:be29e59e8cabc701ee0b71846270811ca1902c28ad1615f1ef28961b711acbd5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TOB6LS2KBVK5MEIUVYHX6PJ7FR/bundle.json","state_url":"https://pith.science/pith/TOB6LS2KBVK5MEIUVYHX6PJ7FR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TOB6LS2KBVK5MEIUVYHX6PJ7FR/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":"2026-06-01T05:23:36Z","links":{"resolver":"https://pith.science/pith/TOB6LS2KBVK5MEIUVYHX6PJ7FR","bundle":"https://pith.science/pith/TOB6LS2KBVK5MEIUVYHX6PJ7FR/bundle.json","state":"https://pith.science/pith/TOB6LS2KBVK5MEIUVYHX6PJ7FR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TOB6LS2KBVK5MEIUVYHX6PJ7FR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:TOB6LS2KBVK5MEIUVYHX6PJ7FR","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":"8c7b7fe725121928362784c16699dae3a55bae396286944f4b9bc5d03181702e","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-07-02T20:00:00Z","title_canon_sha256":"7dbdee53ef5667c65cb5b902f16e989ea1dce68bb0210a10fe461f54f07d3f24"},"schema_version":"1.0","source":{"id":"1407.0700","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.0700","created_at":"2026-05-18T01:42:42Z"},{"alias_kind":"arxiv_version","alias_value":"1407.0700v1","created_at":"2026-05-18T01:42:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.0700","created_at":"2026-05-18T01:42:42Z"},{"alias_kind":"pith_short_12","alias_value":"TOB6LS2KBVK5","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_16","alias_value":"TOB6LS2KBVK5MEIU","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_8","alias_value":"TOB6LS2K","created_at":"2026-05-18T12:28:49Z"}],"graph_snapshots":[{"event_id":"sha256:be29e59e8cabc701ee0b71846270811ca1902c28ad1615f1ef28961b711acbd5","target":"graph","created_at":"2026-05-18T01:42:42Z","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 submillimeter observations of the young brown dwarfs KPNO Tau 1, KPNO Tau 3, and KPNO Tau 6 at 450 micron and 850 micron taken with the Submillimeter Common-User Bolometer Array on the James Clerke Maxwell Telescope. KPNO Tau 3 and KPNO Tau 6 have been previously identified as Class II objects hosting accretion disks, whereas KPNO Tau 1 has been identified as a Class III object and shows no evidence of circumsubstellar material. Our 3 sigma detection of cold dust around KPNO Tau 3 implies a total disk mass of (4.0 +/- 1.1) x 10^{-4} Msolar (assuming a gas to dust ratio of 100:1). We","authors_text":"Aleks Scholz, Antonio Chrysostomou, Brenda Matthews, Gaspard Duchene, Hannah Broekhoven-Fiene, James Di Francesco, Ray Jayawardhana","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-07-02T20:00:00Z","title":"The disk around the brown dwarf KPNO Tau 3"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.0700","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:abafd0da8e3aeb428f443fc000da86109e36f762b300aa7974c360aceab05a10","target":"record","created_at":"2026-05-18T01:42:42Z","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":"8c7b7fe725121928362784c16699dae3a55bae396286944f4b9bc5d03181702e","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-07-02T20:00:00Z","title_canon_sha256":"7dbdee53ef5667c65cb5b902f16e989ea1dce68bb0210a10fe461f54f07d3f24"},"schema_version":"1.0","source":{"id":"1407.0700","kind":"arxiv","version":1}},"canonical_sha256":"9b83e5cb4a0d55d61114ae0f7f3d3f2c7cc0757a968c2594d508d38e3a5e07c7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b83e5cb4a0d55d61114ae0f7f3d3f2c7cc0757a968c2594d508d38e3a5e07c7","first_computed_at":"2026-05-18T01:42:42.622080Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:42.622080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dcQbAWTq6oI37pytJi1HFN1hzVBSykfSEn12enK7KntkNA9eLshIiEvYZBGMlS0aKvNhC5Y7UoAyVow9evBaCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:42.622573Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.0700","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:abafd0da8e3aeb428f443fc000da86109e36f762b300aa7974c360aceab05a10","sha256:be29e59e8cabc701ee0b71846270811ca1902c28ad1615f1ef28961b711acbd5"],"state_sha256":"0563632f12009867938cc740ac855c24cf0f1ed2a2dbd3dd5a10784909e8fb9d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r1yr/Uhr4u78n/twdtp0W+3zr2/hpUqICKIvZ57yGBGt1Vyc4I3+xw1Bsj/iyd3Vb1DzbRNM71//kuv4WXGCDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T05:23:36.391492Z","bundle_sha256":"87e6d76ccec2bcb3cdd3d56b890b1b59a8670bf726c25ecdd7aad3c7f9ab9061"}}