{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:RGYN2RJDPY2QAJRHGMGZ6QTVXD","short_pith_number":"pith:RGYN2RJD","canonical_record":{"source":{"id":"2012.15166","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-30T14:09:31Z","cross_cats_sorted":[],"title_canon_sha256":"d445c3db46e5e91761d34f4d01393ac39bf1d936e31db14461ee730f9412ef88","abstract_canon_sha256":"e1228b0588a34b2a57cb9e1a7fbaa19550d4705f3872f5a6d0d4f6279a111473"},"schema_version":"1.0"},"canonical_sha256":"89b0dd45237e35002627330d9f4275b8f0835945c418e0903e500c58034e78f4","source":{"kind":"arxiv","id":"2012.15166","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.15166","created_at":"2026-07-05T02:19:42Z"},{"alias_kind":"arxiv_version","alias_value":"2012.15166v1","created_at":"2026-07-05T02:19:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.15166","created_at":"2026-07-05T02:19:42Z"},{"alias_kind":"pith_short_12","alias_value":"RGYN2RJDPY2Q","created_at":"2026-07-05T02:19:42Z"},{"alias_kind":"pith_short_16","alias_value":"RGYN2RJDPY2QAJRH","created_at":"2026-07-05T02:19:42Z"},{"alias_kind":"pith_short_8","alias_value":"RGYN2RJD","created_at":"2026-07-05T02:19:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:RGYN2RJDPY2QAJRHGMGZ6QTVXD","target":"record","payload":{"canonical_record":{"source":{"id":"2012.15166","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-30T14:09:31Z","cross_cats_sorted":[],"title_canon_sha256":"d445c3db46e5e91761d34f4d01393ac39bf1d936e31db14461ee730f9412ef88","abstract_canon_sha256":"e1228b0588a34b2a57cb9e1a7fbaa19550d4705f3872f5a6d0d4f6279a111473"},"schema_version":"1.0"},"canonical_sha256":"89b0dd45237e35002627330d9f4275b8f0835945c418e0903e500c58034e78f4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:19:42.429808Z","signature_b64":"rwxsdSUgEk3nGUky0t0qxBE8nQkStODwzHoew1jnxhAkhSxgQQ502ylXOLdmzt3m3x+Sr7noUqmFos9ElA2jAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"89b0dd45237e35002627330d9f4275b8f0835945c418e0903e500c58034e78f4","last_reissued_at":"2026-07-05T02:19:42.429398Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:19:42.429398Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.15166","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":"2026-07-05T02:19:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KKmwPJOQm4UfnwWFC0VDRjPkWzYoKVCWtI1DUNI+FJNQTEx7er608K/tL04uKBUHWfTrKADQaSqg4XVW117WAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T22:30:34.140252Z"},"content_sha256":"febe05f49fc7ff2f80e74532a63746c9353dcee25e5b8e267d78553c45adf6c0","schema_version":"1.0","event_id":"sha256:febe05f49fc7ff2f80e74532a63746c9353dcee25e5b8e267d78553c45adf6c0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:RGYN2RJDPY2QAJRHGMGZ6QTVXD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Searching for active low-mass stars in CMa star-forming region: multi-band photometry with T80S","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Hetem, A. Kanaan, B. Fernandes, F. Navarete, H. D. Perottoni, J. Gregorio-Hetem, M. Borges Fernandes, P.A.B. Galli, T. Montmerle, T. Ribeiro, T. Santos-Silva, V. Jatenco-Pereira, W. Schoenell","submitted_at":"2020-12-30T14:09:31Z","abstract_excerpt":"An exotic environment surrounds the young stellar groups associated with the Canis Major (CMa) OB1/R1 region, which probably was formed under feedback from at least three supernova events having occurred a few million years ago. We use astrometric data from the Gaia-DR2 to confirm the membership of the stars in CMa R1, based on proper motion and parallax, which revealed 514 new members and candidates. The mean age of 5 Myr estimated from the color-magnitude diagram characterizes the sources as likely pre-main sequence candidates. In total, a sample of 694 stars detected with the T80-South tele"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.15166","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2012.15166/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:19:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fQ90LbL/peRtM8FqW3m5PMVllTJTzlibbvQC/0HdkAkOmq1O8Q2qhjZj/b+BR+iBa6EYybNdDZayevyFngCJCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T22:30:34.140914Z"},"content_sha256":"95ba947052eaf5a88844e8f47dba4cd6df37a7c3f21f85bc315892a8861eb23a","schema_version":"1.0","event_id":"sha256:95ba947052eaf5a88844e8f47dba4cd6df37a7c3f21f85bc315892a8861eb23a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RGYN2RJDPY2QAJRHGMGZ6QTVXD/bundle.json","state_url":"https://pith.science/pith/RGYN2RJDPY2QAJRHGMGZ6QTVXD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RGYN2RJDPY2QAJRHGMGZ6QTVXD/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":"2026-08-17T22:30:34Z","links":{"resolver":"https://pith.science/pith/RGYN2RJDPY2QAJRHGMGZ6QTVXD","bundle":"https://pith.science/pith/RGYN2RJDPY2QAJRHGMGZ6QTVXD/bundle.json","state":"https://pith.science/pith/RGYN2RJDPY2QAJRHGMGZ6QTVXD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RGYN2RJDPY2QAJRHGMGZ6QTVXD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:RGYN2RJDPY2QAJRHGMGZ6QTVXD","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":"e1228b0588a34b2a57cb9e1a7fbaa19550d4705f3872f5a6d0d4f6279a111473","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-30T14:09:31Z","title_canon_sha256":"d445c3db46e5e91761d34f4d01393ac39bf1d936e31db14461ee730f9412ef88"},"schema_version":"1.0","source":{"id":"2012.15166","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.15166","created_at":"2026-07-05T02:19:42Z"},{"alias_kind":"arxiv_version","alias_value":"2012.15166v1","created_at":"2026-07-05T02:19:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.15166","created_at":"2026-07-05T02:19:42Z"},{"alias_kind":"pith_short_12","alias_value":"RGYN2RJDPY2Q","created_at":"2026-07-05T02:19:42Z"},{"alias_kind":"pith_short_16","alias_value":"RGYN2RJDPY2QAJRH","created_at":"2026-07-05T02:19:42Z"},{"alias_kind":"pith_short_8","alias_value":"RGYN2RJD","created_at":"2026-07-05T02:19:42Z"}],"graph_snapshots":[{"event_id":"sha256:95ba947052eaf5a88844e8f47dba4cd6df37a7c3f21f85bc315892a8861eb23a","target":"graph","created_at":"2026-07-05T02:19:42Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2012.15166/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"An exotic environment surrounds the young stellar groups associated with the Canis Major (CMa) OB1/R1 region, which probably was formed under feedback from at least three supernova events having occurred a few million years ago. We use astrometric data from the Gaia-DR2 to confirm the membership of the stars in CMa R1, based on proper motion and parallax, which revealed 514 new members and candidates. The mean age of 5 Myr estimated from the color-magnitude diagram characterizes the sources as likely pre-main sequence candidates. In total, a sample of 694 stars detected with the T80-South tele","authors_text":"A. Hetem, A. Kanaan, B. Fernandes, F. Navarete, H. D. Perottoni, J. Gregorio-Hetem, M. Borges Fernandes, P.A.B. Galli, T. Montmerle, T. Ribeiro, T. Santos-Silva, V. Jatenco-Pereira, W. Schoenell","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-30T14:09:31Z","title":"Searching for active low-mass stars in CMa star-forming region: multi-band photometry with T80S"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.15166","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:febe05f49fc7ff2f80e74532a63746c9353dcee25e5b8e267d78553c45adf6c0","target":"record","created_at":"2026-07-05T02:19:42Z","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":"e1228b0588a34b2a57cb9e1a7fbaa19550d4705f3872f5a6d0d4f6279a111473","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-30T14:09:31Z","title_canon_sha256":"d445c3db46e5e91761d34f4d01393ac39bf1d936e31db14461ee730f9412ef88"},"schema_version":"1.0","source":{"id":"2012.15166","kind":"arxiv","version":1}},"canonical_sha256":"89b0dd45237e35002627330d9f4275b8f0835945c418e0903e500c58034e78f4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"89b0dd45237e35002627330d9f4275b8f0835945c418e0903e500c58034e78f4","first_computed_at":"2026-07-05T02:19:42.429398Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:19:42.429398Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rwxsdSUgEk3nGUky0t0qxBE8nQkStODwzHoew1jnxhAkhSxgQQ502ylXOLdmzt3m3x+Sr7noUqmFos9ElA2jAw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:19:42.429808Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.15166","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:febe05f49fc7ff2f80e74532a63746c9353dcee25e5b8e267d78553c45adf6c0","sha256:95ba947052eaf5a88844e8f47dba4cd6df37a7c3f21f85bc315892a8861eb23a"],"state_sha256":"6f146427eb17377f3177b735f273db72314cdc51b4d21ecd5c523fb6f371fd04"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J4x6ngO2+PNwUEnMuY5Jiy0/v8wO7PGt1teYfir0h4+IpeiMtJxLVsI/Xk6B9ck1SxlaBuyxxDIV/Z2712fhCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T22:30:34.154895Z","bundle_sha256":"1a32008f2c71e81d6078d2875c2382622cbbbb5d70890c16755aafc67b791c09"}}