{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:WGZXFCYQBN37GJNSMN3ZKX5LEE","short_pith_number":"pith:WGZXFCYQ","canonical_record":{"source":{"id":"0901.2835","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-01-19T12:37:41Z","cross_cats_sorted":[],"title_canon_sha256":"bff5eec2c77bf228594c7b4108fe5d4cc4f78d40a6d967f147e7a29f7a0930c6","abstract_canon_sha256":"fa58b8ff46b0fb15511298f53cdde366693720e5966da23b60b52332860ed929"},"schema_version":"1.0"},"canonical_sha256":"b1b3728b100b77f325b26377955fab21024198bf79b4324d1cc00cc71df5ab5b","source":{"kind":"arxiv","id":"0901.2835","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0901.2835","created_at":"2026-05-18T04:33:48Z"},{"alias_kind":"arxiv_version","alias_value":"0901.2835v1","created_at":"2026-05-18T04:33:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.2835","created_at":"2026-05-18T04:33:48Z"},{"alias_kind":"pith_short_12","alias_value":"WGZXFCYQBN37","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"WGZXFCYQBN37GJNS","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"WGZXFCYQ","created_at":"2026-05-18T12:26:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:WGZXFCYQBN37GJNSMN3ZKX5LEE","target":"record","payload":{"canonical_record":{"source":{"id":"0901.2835","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-01-19T12:37:41Z","cross_cats_sorted":[],"title_canon_sha256":"bff5eec2c77bf228594c7b4108fe5d4cc4f78d40a6d967f147e7a29f7a0930c6","abstract_canon_sha256":"fa58b8ff46b0fb15511298f53cdde366693720e5966da23b60b52332860ed929"},"schema_version":"1.0"},"canonical_sha256":"b1b3728b100b77f325b26377955fab21024198bf79b4324d1cc00cc71df5ab5b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:33:48.431881Z","signature_b64":"onmtsMirOMUIYux0FXA17QNBf17EtmOkchRB0v9YApZnMyXMx9shmXpigsODRc4Mv9idEROof9t4Uz7dldUoCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b1b3728b100b77f325b26377955fab21024198bf79b4324d1cc00cc71df5ab5b","last_reissued_at":"2026-05-18T04:33:48.431283Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:33:48.431283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0901.2835","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":"2026-05-18T04:33:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nMWktKAiyxOaOyBj6qpktDOzNPZFABlOd7pLxJ01xFrcp13ikoobfQpklwOJWaPhLWl9awiUnc9BSymLaCEcBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:53:14.214827Z"},"content_sha256":"2f6ca9e8ca6abdc536bd311c9edd49fc128eefa3ec26ad35d2702c83fdee1b11","schema_version":"1.0","event_id":"sha256:2f6ca9e8ca6abdc536bd311c9edd49fc128eefa3ec26ad35d2702c83fdee1b11"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:WGZXFCYQBN37GJNSMN3ZKX5LEE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Variability type classification of multi-epoch surveys","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Jan, J. Blomme, J. Debosscher, J. De Ridder, K. Nienartowicz, L. Eyer, L. Sarro, M. Lopez, P. Dubath","submitted_at":"2009-01-19T12:37:41Z","abstract_excerpt":"The classification of time series from photometric large scale surveys into variability types and the description of their properties is difficult for various reasons including but not limited to the irregular sampling, the usually few available photometric bands, and the diversity of variable objects. Furthermore, it can be seen that different physical processes may sometimes produce similar behavior which may end up to be represented as same models. In this article we will also be presenting our approach for processing the data resulting from the Gaia space mission. The approach may be class"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.2835","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":"2026-05-18T04:33:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ryBdF1t2BtBSizWf3k4OFHUK6UvjILsY5N9G+y++1iogVlbcRXClKku9DmqjKKPxlHu8ez2zAJ9hIfSlkUp+CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:53:14.215168Z"},"content_sha256":"1936aa259d413e9280dced4e70c04e1272ad69f287c7fa3d0dac5c8bd173e89f","schema_version":"1.0","event_id":"sha256:1936aa259d413e9280dced4e70c04e1272ad69f287c7fa3d0dac5c8bd173e89f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WGZXFCYQBN37GJNSMN3ZKX5LEE/bundle.json","state_url":"https://pith.science/pith/WGZXFCYQBN37GJNSMN3ZKX5LEE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WGZXFCYQBN37GJNSMN3ZKX5LEE/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":"2026-06-01T12:53:14Z","links":{"resolver":"https://pith.science/pith/WGZXFCYQBN37GJNSMN3ZKX5LEE","bundle":"https://pith.science/pith/WGZXFCYQBN37GJNSMN3ZKX5LEE/bundle.json","state":"https://pith.science/pith/WGZXFCYQBN37GJNSMN3ZKX5LEE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WGZXFCYQBN37GJNSMN3ZKX5LEE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:WGZXFCYQBN37GJNSMN3ZKX5LEE","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":"fa58b8ff46b0fb15511298f53cdde366693720e5966da23b60b52332860ed929","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-01-19T12:37:41Z","title_canon_sha256":"bff5eec2c77bf228594c7b4108fe5d4cc4f78d40a6d967f147e7a29f7a0930c6"},"schema_version":"1.0","source":{"id":"0901.2835","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0901.2835","created_at":"2026-05-18T04:33:48Z"},{"alias_kind":"arxiv_version","alias_value":"0901.2835v1","created_at":"2026-05-18T04:33:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.2835","created_at":"2026-05-18T04:33:48Z"},{"alias_kind":"pith_short_12","alias_value":"WGZXFCYQBN37","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"WGZXFCYQBN37GJNS","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"WGZXFCYQ","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:1936aa259d413e9280dced4e70c04e1272ad69f287c7fa3d0dac5c8bd173e89f","target":"graph","created_at":"2026-05-18T04:33:48Z","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":"The classification of time series from photometric large scale surveys into variability types and the description of their properties is difficult for various reasons including but not limited to the irregular sampling, the usually few available photometric bands, and the diversity of variable objects. Furthermore, it can be seen that different physical processes may sometimes produce similar behavior which may end up to be represented as same models. In this article we will also be presenting our approach for processing the data resulting from the Gaia space mission. The approach may be class","authors_text":"A. Jan, J. Blomme, J. Debosscher, J. De Ridder, K. Nienartowicz, L. Eyer, L. Sarro, M. Lopez, P. Dubath","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-01-19T12:37:41Z","title":"Variability type classification of multi-epoch surveys"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.2835","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":"sha256:2f6ca9e8ca6abdc536bd311c9edd49fc128eefa3ec26ad35d2702c83fdee1b11","target":"record","created_at":"2026-05-18T04:33:48Z","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":"fa58b8ff46b0fb15511298f53cdde366693720e5966da23b60b52332860ed929","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-01-19T12:37:41Z","title_canon_sha256":"bff5eec2c77bf228594c7b4108fe5d4cc4f78d40a6d967f147e7a29f7a0930c6"},"schema_version":"1.0","source":{"id":"0901.2835","kind":"arxiv","version":1}},"canonical_sha256":"b1b3728b100b77f325b26377955fab21024198bf79b4324d1cc00cc71df5ab5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b1b3728b100b77f325b26377955fab21024198bf79b4324d1cc00cc71df5ab5b","first_computed_at":"2026-05-18T04:33:48.431283Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:33:48.431283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"onmtsMirOMUIYux0FXA17QNBf17EtmOkchRB0v9YApZnMyXMx9shmXpigsODRc4Mv9idEROof9t4Uz7dldUoCg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:33:48.431881Z","signed_message":"canonical_sha256_bytes"},"source_id":"0901.2835","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2f6ca9e8ca6abdc536bd311c9edd49fc128eefa3ec26ad35d2702c83fdee1b11","sha256:1936aa259d413e9280dced4e70c04e1272ad69f287c7fa3d0dac5c8bd173e89f"],"state_sha256":"74c61e5938e82938dcead99e216156a07c4f4ff17a0735716082fbaf002e7ada"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BvRCB1Rmxm8i9KJybcbfU5umIB0uSg6lDa997jZDdOXDNy/iE8tIXArGj/OYkS83hIMYIVCrnliCnAFJ70AUAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T12:53:14.217028Z","bundle_sha256":"eabfbd2135cbcd640ab51209f4ea7ccfaf6f9273b443b06de370b0185a7186cf"}}