{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:VVYPDN3TVIAACEUFKYHK7JZD23","short_pith_number":"pith:VVYPDN3T","canonical_record":{"source":{"id":"1211.4484","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-11-16T15:16:39Z","cross_cats_sorted":[],"title_canon_sha256":"a7a7c2a7d9940629c18fc4cdd08ec6275c09339317ca2d40917febbb2797682c","abstract_canon_sha256":"a0c83d773488fe6e339338c04e617d8214d5a940e2363bc4f4ce31ccfd56ca1c"},"schema_version":"1.0"},"canonical_sha256":"ad70f1b773aa00011285560eafa723d6db6fb5b52c18e16e6608f21b7a901c64","source":{"kind":"arxiv","id":"1211.4484","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.4484","created_at":"2026-05-18T03:39:52Z"},{"alias_kind":"arxiv_version","alias_value":"1211.4484v2","created_at":"2026-05-18T03:39:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.4484","created_at":"2026-05-18T03:39:52Z"},{"alias_kind":"pith_short_12","alias_value":"VVYPDN3TVIAA","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VVYPDN3TVIAACEUF","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VVYPDN3T","created_at":"2026-05-18T12:27:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:VVYPDN3TVIAACEUFKYHK7JZD23","target":"record","payload":{"canonical_record":{"source":{"id":"1211.4484","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-11-16T15:16:39Z","cross_cats_sorted":[],"title_canon_sha256":"a7a7c2a7d9940629c18fc4cdd08ec6275c09339317ca2d40917febbb2797682c","abstract_canon_sha256":"a0c83d773488fe6e339338c04e617d8214d5a940e2363bc4f4ce31ccfd56ca1c"},"schema_version":"1.0"},"canonical_sha256":"ad70f1b773aa00011285560eafa723d6db6fb5b52c18e16e6608f21b7a901c64","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:39:52.581062Z","signature_b64":"ULlx7nJWWGhObaZEwlt1CVcxnXPF4O1sYOhuPb7Xty5oeCOsWj9sL6KXxHbLInrMCDpn0RuH/aukyB7o1tQIBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad70f1b773aa00011285560eafa723d6db6fb5b52c18e16e6608f21b7a901c64","last_reissued_at":"2026-05-18T03:39:52.580517Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:39:52.580517Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.4484","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:39:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SsDLfmHqKB1XrAqsAwsycqChWBldMPRkZOrBvBEwCl4K2iFhVoq7rlllKPA0B30wpQp73PcpuO95b1OzxC5mBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T05:01:34.299375Z"},"content_sha256":"cdd9f50218a7e1750b57b1efd94d89394fb5f20e3e7078b478394144aa35c17c","schema_version":"1.0","event_id":"sha256:cdd9f50218a7e1750b57b1efd94d89394fb5f20e3e7078b478394144aa35c17c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:VVYPDN3TVIAACEUFKYHK7JZD23","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"New brown dwarf disks in Upper Scorpius observed with WISE","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Natta, A. Scholz, D. Padgett, K. A. Marsh, K. Wood, M. E. Ressler, P. Dawson, T. P. Ray","submitted_at":"2012-11-16T15:16:39Z","abstract_excerpt":"We present a census of the disk population for UKIDSS selected brown dwarfs in the 5-10 Myr old Upper Scorpius OB association. For 116 objects originally identified in UKIDSS, the majority of them not studied in previous publications, we obtain photometry from the WISE database. The resulting colour-magnitude and colour-colour plots clearly show two separate populations of objects, interpreted as brown dwarfs with disks (class II) and without disks (class III). We identify 27 class II brown dwarfs, 14 of them not previously known. This disk fraction (27 out of 116 or 23%) among brown dwarfs wa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.4484","kind":"arxiv","version":2},"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":"2026-05-18T03:39:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6tk3VJdxNJ5PD7QfUSs3UURDk2M+xNSCrmjXutFnpQvw6tGwbdDk3uQXO6ln6mtL6ttFgjPgUje3oasqyipyAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T05:01:34.300004Z"},"content_sha256":"3e8abd22cb4fe99cc5c779b27649751f1ec01dc799d39439645abc85f11d0c02","schema_version":"1.0","event_id":"sha256:3e8abd22cb4fe99cc5c779b27649751f1ec01dc799d39439645abc85f11d0c02"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VVYPDN3TVIAACEUFKYHK7JZD23/bundle.json","state_url":"https://pith.science/pith/VVYPDN3TVIAACEUFKYHK7JZD23/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VVYPDN3TVIAACEUFKYHK7JZD23/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":"2026-05-25T05:01:34Z","links":{"resolver":"https://pith.science/pith/VVYPDN3TVIAACEUFKYHK7JZD23","bundle":"https://pith.science/pith/VVYPDN3TVIAACEUFKYHK7JZD23/bundle.json","state":"https://pith.science/pith/VVYPDN3TVIAACEUFKYHK7JZD23/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VVYPDN3TVIAACEUFKYHK7JZD23/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:VVYPDN3TVIAACEUFKYHK7JZD23","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":"a0c83d773488fe6e339338c04e617d8214d5a940e2363bc4f4ce31ccfd56ca1c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-11-16T15:16:39Z","title_canon_sha256":"a7a7c2a7d9940629c18fc4cdd08ec6275c09339317ca2d40917febbb2797682c"},"schema_version":"1.0","source":{"id":"1211.4484","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.4484","created_at":"2026-05-18T03:39:52Z"},{"alias_kind":"arxiv_version","alias_value":"1211.4484v2","created_at":"2026-05-18T03:39:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.4484","created_at":"2026-05-18T03:39:52Z"},{"alias_kind":"pith_short_12","alias_value":"VVYPDN3TVIAA","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VVYPDN3TVIAACEUF","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VVYPDN3T","created_at":"2026-05-18T12:27:25Z"}],"graph_snapshots":[{"event_id":"sha256:3e8abd22cb4fe99cc5c779b27649751f1ec01dc799d39439645abc85f11d0c02","target":"graph","created_at":"2026-05-18T03:39:52Z","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 a census of the disk population for UKIDSS selected brown dwarfs in the 5-10 Myr old Upper Scorpius OB association. For 116 objects originally identified in UKIDSS, the majority of them not studied in previous publications, we obtain photometry from the WISE database. The resulting colour-magnitude and colour-colour plots clearly show two separate populations of objects, interpreted as brown dwarfs with disks (class II) and without disks (class III). We identify 27 class II brown dwarfs, 14 of them not previously known. This disk fraction (27 out of 116 or 23%) among brown dwarfs wa","authors_text":"A. Natta, A. Scholz, D. Padgett, K. A. Marsh, K. Wood, M. E. Ressler, P. Dawson, T. P. Ray","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-11-16T15:16:39Z","title":"New brown dwarf disks in Upper Scorpius observed with WISE"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.4484","kind":"arxiv","version":2},"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:cdd9f50218a7e1750b57b1efd94d89394fb5f20e3e7078b478394144aa35c17c","target":"record","created_at":"2026-05-18T03:39:52Z","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":"a0c83d773488fe6e339338c04e617d8214d5a940e2363bc4f4ce31ccfd56ca1c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-11-16T15:16:39Z","title_canon_sha256":"a7a7c2a7d9940629c18fc4cdd08ec6275c09339317ca2d40917febbb2797682c"},"schema_version":"1.0","source":{"id":"1211.4484","kind":"arxiv","version":2}},"canonical_sha256":"ad70f1b773aa00011285560eafa723d6db6fb5b52c18e16e6608f21b7a901c64","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ad70f1b773aa00011285560eafa723d6db6fb5b52c18e16e6608f21b7a901c64","first_computed_at":"2026-05-18T03:39:52.580517Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:39:52.580517Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ULlx7nJWWGhObaZEwlt1CVcxnXPF4O1sYOhuPb7Xty5oeCOsWj9sL6KXxHbLInrMCDpn0RuH/aukyB7o1tQIBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:39:52.581062Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.4484","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cdd9f50218a7e1750b57b1efd94d89394fb5f20e3e7078b478394144aa35c17c","sha256:3e8abd22cb4fe99cc5c779b27649751f1ec01dc799d39439645abc85f11d0c02"],"state_sha256":"5d90653c6e02be8057c1267a39abd49aaad214901b17292f339700558ee37c62"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uuV4nTTX3+Zb8JgqKRnpyxPne8uNniMtzlMMUgcBYPj2RsdRLAR5wifzA/c6IO2G44TqdFgnS0C6dhRoFM+QCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T05:01:34.302840Z","bundle_sha256":"b36d870a90f4aa75a388e91d15c796cccfb9fd555c24485025d42f01cb37f934"}}