{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:TFZ2HSQLXKVLURFVEOPWZGQWHD","short_pith_number":"pith:TFZ2HSQL","canonical_record":{"source":{"id":"1601.03402","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-13T21:00:14Z","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"title_canon_sha256":"2de8c7372c041cbff3b56069b59a4e57980de8b2d3e35dc3ec905dd080f53009","abstract_canon_sha256":"87368b85bc56d1cc51235cd2be926fabbdb747ef52539afe7060a866d6445dcc"},"schema_version":"1.0"},"canonical_sha256":"9973a3ca0bbaaaba44b5239f6c9a1638d520d1606bc1069971ce56d8f8aef0cb","source":{"kind":"arxiv","id":"1601.03402","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.03402","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"arxiv_version","alias_value":"1601.03402v1","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.03402","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"pith_short_12","alias_value":"TFZ2HSQLXKVL","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"TFZ2HSQLXKVLURFV","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"TFZ2HSQL","created_at":"2026-05-18T12:30:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:TFZ2HSQLXKVLURFVEOPWZGQWHD","target":"record","payload":{"canonical_record":{"source":{"id":"1601.03402","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-13T21:00:14Z","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"title_canon_sha256":"2de8c7372c041cbff3b56069b59a4e57980de8b2d3e35dc3ec905dd080f53009","abstract_canon_sha256":"87368b85bc56d1cc51235cd2be926fabbdb747ef52539afe7060a866d6445dcc"},"schema_version":"1.0"},"canonical_sha256":"9973a3ca0bbaaaba44b5239f6c9a1638d520d1606bc1069971ce56d8f8aef0cb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:20:40.244761Z","signature_b64":"WmZ3q3rY7wHiG83+KrE2IelbD8+B8WkV0kA7ceBo+uUyXC23ePU1sV1QZ6SqAOmu1xiWAwfKphuJwzohG9nKCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9973a3ca0bbaaaba44b5239f6c9a1638d520d1606bc1069971ce56d8f8aef0cb","last_reissued_at":"2026-05-18T01:20:40.244098Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:20:40.244098Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.03402","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":"2026-05-18T01:20:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"66M+bMGMV0AmnnfjtrmnhJ5vA2YX70Bb/bC3lKAiItBameEJuc9LAOXUaugRVuf97OCwbpy456gzBoawEp7SDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:14:03.231279Z"},"content_sha256":"9b5560818ddf2c350ea936ae9fd4533bae7bd300e8442ee33cb055bd163732ce","schema_version":"1.0","event_id":"sha256:9b5560818ddf2c350ea936ae9fd4533bae7bd300e8442ee33cb055bd163732ce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:TFZ2HSQLXKVLURFVEOPWZGQWHD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Method for Selecting M dwarfs with an Increased Likelihood of Unresolved Ultra-cool Companionship","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"A. C. Day-Jones, A. L. Luo, B. Burningham, D. J. Pinfield, F. Marocco, H. R. A. Jones, J. Frith, J. Zhong, M. Gromadzki, N. J. Cook, P. W. Lucas, R. G. Kurtev, R. L. Smart, Y. Bai, Y. F. Wang, Y. X. Guo, Z. P. Yi, Z. X. Qi","submitted_at":"2016-01-13T21:00:14Z","abstract_excerpt":"Locating ultra-cool companions to M dwarfs is important for constraining low-mass formation models, the measurement of sub-stellar dynamical masses and radii, and for testing ultra-cool evolutionary models. We present an optimised method for identifying M dwarfs which may have unresolved ultra-cool companions. We construct a catalogue of 440,694 candidates, from WISE, 2MASS and SDSS, based on optical and near-infrared colours and reduced proper motion. With strict reddening, photometric and quality constraints we isolate a sub-sample of 36,898 M dwarfs and search for possible mid-infrared M dw"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.03402","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":"2026-05-18T01:20:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bSSmMG+xREzp410p3j9d+3j6ZZKtybtN/ZxWL1cJnNyKYRgFk8J8P93kdNiMd79xi0SAntcoR62nXs8lt6ukDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:14:03.231898Z"},"content_sha256":"e56069b8707458f733b2155a906fc574f387af6acc9b49a7c889a6c8168ab61d","schema_version":"1.0","event_id":"sha256:e56069b8707458f733b2155a906fc574f387af6acc9b49a7c889a6c8168ab61d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TFZ2HSQLXKVLURFVEOPWZGQWHD/bundle.json","state_url":"https://pith.science/pith/TFZ2HSQLXKVLURFVEOPWZGQWHD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TFZ2HSQLXKVLURFVEOPWZGQWHD/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":"2026-05-25T19:14:03Z","links":{"resolver":"https://pith.science/pith/TFZ2HSQLXKVLURFVEOPWZGQWHD","bundle":"https://pith.science/pith/TFZ2HSQLXKVLURFVEOPWZGQWHD/bundle.json","state":"https://pith.science/pith/TFZ2HSQLXKVLURFVEOPWZGQWHD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TFZ2HSQLXKVLURFVEOPWZGQWHD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:TFZ2HSQLXKVLURFVEOPWZGQWHD","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":"87368b85bc56d1cc51235cd2be926fabbdb747ef52539afe7060a866d6445dcc","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-13T21:00:14Z","title_canon_sha256":"2de8c7372c041cbff3b56069b59a4e57980de8b2d3e35dc3ec905dd080f53009"},"schema_version":"1.0","source":{"id":"1601.03402","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.03402","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"arxiv_version","alias_value":"1601.03402v1","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.03402","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"pith_short_12","alias_value":"TFZ2HSQLXKVL","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"TFZ2HSQLXKVLURFV","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"TFZ2HSQL","created_at":"2026-05-18T12:30:44Z"}],"graph_snapshots":[{"event_id":"sha256:e56069b8707458f733b2155a906fc574f387af6acc9b49a7c889a6c8168ab61d","target":"graph","created_at":"2026-05-18T01:20:40Z","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":"Locating ultra-cool companions to M dwarfs is important for constraining low-mass formation models, the measurement of sub-stellar dynamical masses and radii, and for testing ultra-cool evolutionary models. We present an optimised method for identifying M dwarfs which may have unresolved ultra-cool companions. We construct a catalogue of 440,694 candidates, from WISE, 2MASS and SDSS, based on optical and near-infrared colours and reduced proper motion. With strict reddening, photometric and quality constraints we isolate a sub-sample of 36,898 M dwarfs and search for possible mid-infrared M dw","authors_text":"A. C. Day-Jones, A. L. Luo, B. Burningham, D. J. Pinfield, F. Marocco, H. R. A. Jones, J. Frith, J. Zhong, M. Gromadzki, N. J. Cook, P. W. Lucas, R. G. Kurtev, R. L. Smart, Y. Bai, Y. F. Wang, Y. X. Guo, Z. P. Yi, Z. X. Qi","cross_cats":["astro-ph.GA","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-13T21:00:14Z","title":"A Method for Selecting M dwarfs with an Increased Likelihood of Unresolved Ultra-cool Companionship"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.03402","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":"sha256:9b5560818ddf2c350ea936ae9fd4533bae7bd300e8442ee33cb055bd163732ce","target":"record","created_at":"2026-05-18T01:20:40Z","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":"87368b85bc56d1cc51235cd2be926fabbdb747ef52539afe7060a866d6445dcc","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-13T21:00:14Z","title_canon_sha256":"2de8c7372c041cbff3b56069b59a4e57980de8b2d3e35dc3ec905dd080f53009"},"schema_version":"1.0","source":{"id":"1601.03402","kind":"arxiv","version":1}},"canonical_sha256":"9973a3ca0bbaaaba44b5239f6c9a1638d520d1606bc1069971ce56d8f8aef0cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9973a3ca0bbaaaba44b5239f6c9a1638d520d1606bc1069971ce56d8f8aef0cb","first_computed_at":"2026-05-18T01:20:40.244098Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:40.244098Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WmZ3q3rY7wHiG83+KrE2IelbD8+B8WkV0kA7ceBo+uUyXC23ePU1sV1QZ6SqAOmu1xiWAwfKphuJwzohG9nKCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:40.244761Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.03402","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9b5560818ddf2c350ea936ae9fd4533bae7bd300e8442ee33cb055bd163732ce","sha256:e56069b8707458f733b2155a906fc574f387af6acc9b49a7c889a6c8168ab61d"],"state_sha256":"25e45237bca306259748fa4a351c4fe75141feac8d0fb2b2be1d86f1f1cb249f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VcK9ZktzI+GFAQ4NsNrWi7Cr4GTY5GnptuiWOug+PUXTJtswkVJ8p03dewOsYUXR52eNgtE+rENledu7qlc7Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:14:03.235744Z","bundle_sha256":"e488c688e6b29f081a95c6e63efad3ee35ae14584141aaf9408acbc54d2bbda3"}}