{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:RMUDDH54XSLAY4DLH5VRTU5FLZ","short_pith_number":"pith:RMUDDH54","canonical_record":{"source":{"id":"1205.0028","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-30T20:28:38Z","cross_cats_sorted":[],"title_canon_sha256":"0d5df2e704404274bda305aab286d741800430acdcbe166f5f4d8b7ef342afe6","abstract_canon_sha256":"ab4df1c4e0fc2b7841f8e220dc4704a16784df6d2a3671534ea3a52c42b11fb9"},"schema_version":"1.0"},"canonical_sha256":"8b28319fbcbc960c706b3f6b19d3a55e7159def499e564755a805709b1eb4974","source":{"kind":"arxiv","id":"1205.0028","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.0028","created_at":"2026-05-18T01:57:42Z"},{"alias_kind":"arxiv_version","alias_value":"1205.0028v3","created_at":"2026-05-18T01:57:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.0028","created_at":"2026-05-18T01:57:42Z"},{"alias_kind":"pith_short_12","alias_value":"RMUDDH54XSLA","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RMUDDH54XSLAY4DL","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RMUDDH54","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:RMUDDH54XSLAY4DLH5VRTU5FLZ","target":"record","payload":{"canonical_record":{"source":{"id":"1205.0028","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-30T20:28:38Z","cross_cats_sorted":[],"title_canon_sha256":"0d5df2e704404274bda305aab286d741800430acdcbe166f5f4d8b7ef342afe6","abstract_canon_sha256":"ab4df1c4e0fc2b7841f8e220dc4704a16784df6d2a3671534ea3a52c42b11fb9"},"schema_version":"1.0"},"canonical_sha256":"8b28319fbcbc960c706b3f6b19d3a55e7159def499e564755a805709b1eb4974","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:42.096608Z","signature_b64":"4qNcUk+azVvL5Nv46/O6lUcyyxDQSYLNeN3aDRwNscBIECHkpwTqBoW9Pl1qy1a9Wjq3Vn8RDaMS1jU0imtlAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8b28319fbcbc960c706b3f6b19d3a55e7159def499e564755a805709b1eb4974","last_reissued_at":"2026-05-18T01:57:42.096042Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:42.096042Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.0028","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:57:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0TpNLhms8zeMJyA+B04FVJBAGvh78SzYW8Wf6xm21ozYgsxvpKARsNPUAb5OXdLa3GXvGfyrDCEPGL8O7S1kCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T07:13:53.770472Z"},"content_sha256":"b91825b2d9d129e0392f73fbdbceff3c6faa8aacb60dc0fdd6c6f0e90ef2fb82","schema_version":"1.0","event_id":"sha256:b91825b2d9d129e0392f73fbdbceff3c6faa8aacb60dc0fdd6c6f0e90ef2fb82"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:RMUDDH54XSLAY4DLH5VRTU5FLZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"International observational campaigns of the last two eclipses in EE Cephei: 2003 and 2008/9","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Bondar, A. Dapergolas, A. Ku\\'zmicz, A. Liakos, A. Majcher, A. Majewska, A. Narwid, A. Oksanen, A. Pigulski, A. Zajczyk, B. Bilkina, B. Budzisz, B. Cs\\'ak, B. F. Roukema, B. Gere, B. Staels, C. Ga{\\l}an, C. Migaszewski, C. T. Bolton, D. Dimitrov, D. Graczyk, D. Kolev, E. Kuligowska, E. Niemczura, E. Ragan, E. Semkov, E. \\'Swierczy\\'nski, F. Musaev, G. Apostolovska, G. Galazutdinov, G. Kopacki, G. Maciejewski, G. Michalska, G. Myers, H. C. Stempels, H. Ku\\v{c}\\'akov\\'a, I. Barzova, I. Bellas-Velidis, I. Iliev, I. Miller, I. Stateva, J. Hopkins, J. Janowski, J. Krzesi\\'nski, J. Osiwa{\\l}a, J. Pye, K. Gazeas, K. Go\\'zdziewski, L. Br\\'at, L. Elder, L. Georgiev, M. Cika{\\l}a, M. Drahus, M. Dr\\'o\\.zd\\.z, M. Gromadzki, M. Hajduk, M. Kurpi\\'nska-Winiarska, M. Miko{\\l}ajewski, M. Siwak, M. St\\c{e}\\'slicki, M. Wie\\c{e}k, M. Winiarski, N. Tomov, P. Dobierski, P. M. Marrese, P. N\\'emeth, P. Niarchos, P. T. R\\'o\\.za\\'nski, P. Wychudzki, R. Koci\\'an, R. M. Blake, S. Dvorak, S. Fr\\c{a}kowiak, S. Peneva, S. Zo{\\l}a, T. A. Heras, T. A. Lister, T. Bro\\.zek, T. Kundera, T. Szyma\\'nski, T. Tomov, T. Zwitter, U. Munari, V. P. Grinin, V. Popov, W. Og{\\l}oza, W. Pych, W. Waniak, Y. \\\"Ogmen, Z. Ko{\\l}aczkowski","submitted_at":"2012-04-30T20:28:38Z","abstract_excerpt":"Two observational campaigns were carried out during the eclipses of EE Cep in 2003 and 2008/9 to verify whether the eclipsing body in the system is indeed a dark disk and to understand the observed changes in the depth and durations of the eclipses. Multicolour photometric data and spectroscopic observations at both low and high resolution were collected. We numerically modelled the variations in brightness and colour during the eclipses. We tested models with different disk structure. We considered the possibility of disk precession. The complete set of observational data collected during the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.0028","kind":"arxiv","version":3},"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":"2026-05-18T01:57:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Go6fLXujdYm6oMILMkTKlXUFdHOFgUFVP4n/TN5zc2zJS3Ooh0KKZ3Xgp8H+NnKsdBF5J+aqEHG6dssSeiemCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T07:13:53.771157Z"},"content_sha256":"625fa30d796cc2fcfebf7eae64d093d0901229e058e0adadc8a7e2328c69c53b","schema_version":"1.0","event_id":"sha256:625fa30d796cc2fcfebf7eae64d093d0901229e058e0adadc8a7e2328c69c53b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RMUDDH54XSLAY4DLH5VRTU5FLZ/bundle.json","state_url":"https://pith.science/pith/RMUDDH54XSLAY4DLH5VRTU5FLZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RMUDDH54XSLAY4DLH5VRTU5FLZ/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":"2026-05-31T07:13:53Z","links":{"resolver":"https://pith.science/pith/RMUDDH54XSLAY4DLH5VRTU5FLZ","bundle":"https://pith.science/pith/RMUDDH54XSLAY4DLH5VRTU5FLZ/bundle.json","state":"https://pith.science/pith/RMUDDH54XSLAY4DLH5VRTU5FLZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RMUDDH54XSLAY4DLH5VRTU5FLZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:RMUDDH54XSLAY4DLH5VRTU5FLZ","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":"ab4df1c4e0fc2b7841f8e220dc4704a16784df6d2a3671534ea3a52c42b11fb9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-30T20:28:38Z","title_canon_sha256":"0d5df2e704404274bda305aab286d741800430acdcbe166f5f4d8b7ef342afe6"},"schema_version":"1.0","source":{"id":"1205.0028","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.0028","created_at":"2026-05-18T01:57:42Z"},{"alias_kind":"arxiv_version","alias_value":"1205.0028v3","created_at":"2026-05-18T01:57:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.0028","created_at":"2026-05-18T01:57:42Z"},{"alias_kind":"pith_short_12","alias_value":"RMUDDH54XSLA","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RMUDDH54XSLAY4DL","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RMUDDH54","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:625fa30d796cc2fcfebf7eae64d093d0901229e058e0adadc8a7e2328c69c53b","target":"graph","created_at":"2026-05-18T01:57:42Z","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"},"paper":{"abstract_excerpt":"Two observational campaigns were carried out during the eclipses of EE Cep in 2003 and 2008/9 to verify whether the eclipsing body in the system is indeed a dark disk and to understand the observed changes in the depth and durations of the eclipses. Multicolour photometric data and spectroscopic observations at both low and high resolution were collected. We numerically modelled the variations in brightness and colour during the eclipses. We tested models with different disk structure. We considered the possibility of disk precession. The complete set of observational data collected during the","authors_text":"A. Bondar, A. Dapergolas, A. Ku\\'zmicz, A. Liakos, A. Majcher, A. Majewska, A. Narwid, A. Oksanen, A. Pigulski, A. Zajczyk, B. Bilkina, B. Budzisz, B. Cs\\'ak, B. F. Roukema, B. Gere, B. Staels, C. Ga{\\l}an, C. Migaszewski, C. T. Bolton, D. Dimitrov, D. Graczyk, D. Kolev, E. Kuligowska, E. Niemczura, E. Ragan, E. Semkov, E. \\'Swierczy\\'nski, F. Musaev, G. Apostolovska, G. Galazutdinov, G. Kopacki, G. Maciejewski, G. Michalska, G. Myers, H. C. Stempels, H. Ku\\v{c}\\'akov\\'a, I. Barzova, I. Bellas-Velidis, I. Iliev, I. Miller, I. Stateva, J. Hopkins, J. Janowski, J. Krzesi\\'nski, J. Osiwa{\\l}a, J. Pye, K. Gazeas, K. Go\\'zdziewski, L. Br\\'at, L. Elder, L. Georgiev, M. Cika{\\l}a, M. Drahus, M. Dr\\'o\\.zd\\.z, M. Gromadzki, M. Hajduk, M. Kurpi\\'nska-Winiarska, M. Miko{\\l}ajewski, M. Siwak, M. St\\c{e}\\'slicki, M. Wie\\c{e}k, M. Winiarski, N. Tomov, P. Dobierski, P. M. Marrese, P. N\\'emeth, P. Niarchos, P. T. R\\'o\\.za\\'nski, P. Wychudzki, R. Koci\\'an, R. M. Blake, S. Dvorak, S. Fr\\c{a}kowiak, S. Peneva, S. Zo{\\l}a, T. A. Heras, T. A. Lister, T. Bro\\.zek, T. Kundera, T. Szyma\\'nski, T. Tomov, T. Zwitter, U. Munari, V. P. Grinin, V. Popov, W. Og{\\l}oza, W. Pych, W. Waniak, Y. \\\"Ogmen, Z. Ko{\\l}aczkowski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-30T20:28:38Z","title":"International observational campaigns of the last two eclipses in EE Cephei: 2003 and 2008/9"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.0028","kind":"arxiv","version":3},"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:b91825b2d9d129e0392f73fbdbceff3c6faa8aacb60dc0fdd6c6f0e90ef2fb82","target":"record","created_at":"2026-05-18T01:57:42Z","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":"ab4df1c4e0fc2b7841f8e220dc4704a16784df6d2a3671534ea3a52c42b11fb9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-30T20:28:38Z","title_canon_sha256":"0d5df2e704404274bda305aab286d741800430acdcbe166f5f4d8b7ef342afe6"},"schema_version":"1.0","source":{"id":"1205.0028","kind":"arxiv","version":3}},"canonical_sha256":"8b28319fbcbc960c706b3f6b19d3a55e7159def499e564755a805709b1eb4974","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8b28319fbcbc960c706b3f6b19d3a55e7159def499e564755a805709b1eb4974","first_computed_at":"2026-05-18T01:57:42.096042Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:42.096042Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4qNcUk+azVvL5Nv46/O6lUcyyxDQSYLNeN3aDRwNscBIECHkpwTqBoW9Pl1qy1a9Wjq3Vn8RDaMS1jU0imtlAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:42.096608Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.0028","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b91825b2d9d129e0392f73fbdbceff3c6faa8aacb60dc0fdd6c6f0e90ef2fb82","sha256:625fa30d796cc2fcfebf7eae64d093d0901229e058e0adadc8a7e2328c69c53b"],"state_sha256":"16c71c41753dfaba914fb65ea2746702387dc1a1201b464efbbace1d978c9c09"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ycE02v8MbSWBH6y7Va5sfK0sJVwxUvgwPqfrUmJtCXFyRM8pAw8ENNgUZ18o2ho5QK2HyULPVKXie2X1yw4xDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T07:13:53.775851Z","bundle_sha256":"caa3a4de6b7784abb62479e92a98684de867613a0fe25d83100f7d0c6b3b1003"}}