{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:TL5YHKQ3YVWSMVFGHHZRFP7NCH","short_pith_number":"pith:TL5YHKQ3","canonical_record":{"source":{"id":"1004.3876","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-22T09:48:36Z","cross_cats_sorted":[],"title_canon_sha256":"92261012fe93e041a35d92ff9e2378873c171cf3ffc0f56a191762d4f4f91e13","abstract_canon_sha256":"f5ec4adbb85beabcc5d827356c96714370cdeae3d4f794451ae97b8d1a27709a"},"schema_version":"1.0"},"canonical_sha256":"9afb83aa1bc56d2654a639f312bfed11c646288329affce5e9271cc024c77244","source":{"kind":"arxiv","id":"1004.3876","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.3876","created_at":"2026-05-18T02:07:55Z"},{"alias_kind":"arxiv_version","alias_value":"1004.3876v2","created_at":"2026-05-18T02:07:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.3876","created_at":"2026-05-18T02:07:55Z"},{"alias_kind":"pith_short_12","alias_value":"TL5YHKQ3YVWS","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"TL5YHKQ3YVWSMVFG","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"TL5YHKQ3","created_at":"2026-05-18T12:26:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:TL5YHKQ3YVWSMVFGHHZRFP7NCH","target":"record","payload":{"canonical_record":{"source":{"id":"1004.3876","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-22T09:48:36Z","cross_cats_sorted":[],"title_canon_sha256":"92261012fe93e041a35d92ff9e2378873c171cf3ffc0f56a191762d4f4f91e13","abstract_canon_sha256":"f5ec4adbb85beabcc5d827356c96714370cdeae3d4f794451ae97b8d1a27709a"},"schema_version":"1.0"},"canonical_sha256":"9afb83aa1bc56d2654a639f312bfed11c646288329affce5e9271cc024c77244","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:07:55.248654Z","signature_b64":"FM7EBQG+B0OeWICbMDHsk7hEnIWtsZ3Si5nc0bWeTQCt9p8cv2KFJz5XJldLjBffN8xu+yoZVFkHVXHEsnPpCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9afb83aa1bc56d2654a639f312bfed11c646288329affce5e9271cc024c77244","last_reissued_at":"2026-05-18T02:07:55.247985Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:07:55.247985Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1004.3876","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":"2026-05-18T02:07:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sjs3i/mpVSJzXTXFg68mb3bNasSLHEn9/djr53sShK+oQEIxNObNo7fSXdMuP7zFfl9m6ibKDzWJKgq0ZO98BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T09:26:10.214608Z"},"content_sha256":"7f8a218dc8ddf45893f4e9ed0a27ce69decfe194795c10aa0fc893587ea5de87","schema_version":"1.0","event_id":"sha256:7f8a218dc8ddf45893f4e9ed0a27ce69decfe194795c10aa0fc893587ea5de87"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:TL5YHKQ3YVWSMVFGHHZRFP7NCH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extending the Canada-France brown Dwarfs Survey to the near-infrared: first ultracool brown dwarfs from CFBDSIR","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. J. Willott, C. Reyl\\'e, D. Arzoumanian, E. Artigau, E. Bertin, F. Allard, L. Albert, P. Delorme, S. M. Wilkins, T. Forveille, X. Delfosse","submitted_at":"2010-04-22T09:48:36Z","abstract_excerpt":"We present the first results of the ongoing Canada-France Brown Dwarfs Survey-InfraRed, hereafter CFBDSIR, a Near InfraRed extension to the optical wide-field survey CFBDS. Our final objectives are to constrain ultracool atmosphere physics by finding a statistically significant sample of objects cooler than 650K and to explore the ultracool brown dwarf mass function building on a well defined sample of such objects. Candidates are identified in CFHT/WIRCam J and CFHT/MegaCam z' images using optimised psf-fitting, and we follow them up with pointed near infrared imaging with SOFI at NTT. We fin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.3876","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":"2026-05-18T02:07:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8y47MuZrD5o4m/Frp/aFC2qEcfXVe2JyknfVfVkgWUr2dybdJSF/UcmGMmN2UOS8uYk5EpBDXJb/jLLkCeN3DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T09:26:10.215344Z"},"content_sha256":"c6fbd41849dbb895e3e080e0d467d0f1b662c463093ad360b404b12e80c61663","schema_version":"1.0","event_id":"sha256:c6fbd41849dbb895e3e080e0d467d0f1b662c463093ad360b404b12e80c61663"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TL5YHKQ3YVWSMVFGHHZRFP7NCH/bundle.json","state_url":"https://pith.science/pith/TL5YHKQ3YVWSMVFGHHZRFP7NCH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TL5YHKQ3YVWSMVFGHHZRFP7NCH/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":"2026-05-31T09:26:10Z","links":{"resolver":"https://pith.science/pith/TL5YHKQ3YVWSMVFGHHZRFP7NCH","bundle":"https://pith.science/pith/TL5YHKQ3YVWSMVFGHHZRFP7NCH/bundle.json","state":"https://pith.science/pith/TL5YHKQ3YVWSMVFGHHZRFP7NCH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TL5YHKQ3YVWSMVFGHHZRFP7NCH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:TL5YHKQ3YVWSMVFGHHZRFP7NCH","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":"f5ec4adbb85beabcc5d827356c96714370cdeae3d4f794451ae97b8d1a27709a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-22T09:48:36Z","title_canon_sha256":"92261012fe93e041a35d92ff9e2378873c171cf3ffc0f56a191762d4f4f91e13"},"schema_version":"1.0","source":{"id":"1004.3876","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.3876","created_at":"2026-05-18T02:07:55Z"},{"alias_kind":"arxiv_version","alias_value":"1004.3876v2","created_at":"2026-05-18T02:07:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.3876","created_at":"2026-05-18T02:07:55Z"},{"alias_kind":"pith_short_12","alias_value":"TL5YHKQ3YVWS","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"TL5YHKQ3YVWSMVFG","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"TL5YHKQ3","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:c6fbd41849dbb895e3e080e0d467d0f1b662c463093ad360b404b12e80c61663","target":"graph","created_at":"2026-05-18T02:07:55Z","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 the first results of the ongoing Canada-France Brown Dwarfs Survey-InfraRed, hereafter CFBDSIR, a Near InfraRed extension to the optical wide-field survey CFBDS. Our final objectives are to constrain ultracool atmosphere physics by finding a statistically significant sample of objects cooler than 650K and to explore the ultracool brown dwarf mass function building on a well defined sample of such objects. Candidates are identified in CFHT/WIRCam J and CFHT/MegaCam z' images using optimised psf-fitting, and we follow them up with pointed near infrared imaging with SOFI at NTT. We fin","authors_text":"C. J. Willott, C. Reyl\\'e, D. Arzoumanian, E. Artigau, E. Bertin, F. Allard, L. Albert, P. Delorme, S. M. Wilkins, T. Forveille, X. Delfosse","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-22T09:48:36Z","title":"Extending the Canada-France brown Dwarfs Survey to the near-infrared: first ultracool brown dwarfs from CFBDSIR"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.3876","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":"sha256:7f8a218dc8ddf45893f4e9ed0a27ce69decfe194795c10aa0fc893587ea5de87","target":"record","created_at":"2026-05-18T02:07:55Z","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":"f5ec4adbb85beabcc5d827356c96714370cdeae3d4f794451ae97b8d1a27709a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-22T09:48:36Z","title_canon_sha256":"92261012fe93e041a35d92ff9e2378873c171cf3ffc0f56a191762d4f4f91e13"},"schema_version":"1.0","source":{"id":"1004.3876","kind":"arxiv","version":2}},"canonical_sha256":"9afb83aa1bc56d2654a639f312bfed11c646288329affce5e9271cc024c77244","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9afb83aa1bc56d2654a639f312bfed11c646288329affce5e9271cc024c77244","first_computed_at":"2026-05-18T02:07:55.247985Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:07:55.247985Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FM7EBQG+B0OeWICbMDHsk7hEnIWtsZ3Si5nc0bWeTQCt9p8cv2KFJz5XJldLjBffN8xu+yoZVFkHVXHEsnPpCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:07:55.248654Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.3876","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f8a218dc8ddf45893f4e9ed0a27ce69decfe194795c10aa0fc893587ea5de87","sha256:c6fbd41849dbb895e3e080e0d467d0f1b662c463093ad360b404b12e80c61663"],"state_sha256":"9d78103845ef30fae53f38622ffa6a0a02e96d80b76f900c2c886e3115f4703c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qy6t1NZdQyC5gbsw04gs2yjxEUaVHv/Z6+H9sgASgV3WtH/0c1S5ztTjQ9m/Qlwe4Pw96KWPj9YJtl2Pp0DSDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T09:26:10.219944Z","bundle_sha256":"19797fc45f115b4c3538eff2635dce97c2548da64bf91d4f0bbe4b4878e2d25f"}}