{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:FPKDM2TKE7GDBEAPHFFAUQRVLZ","short_pith_number":"pith:FPKDM2TK","canonical_record":{"source":{"id":"astro-ph/0607266","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-12T19:28:34Z","cross_cats_sorted":[],"title_canon_sha256":"2321ad89d0d171eed92902fc3e814c54026e8b114027f806576efceebbf78038","abstract_canon_sha256":"3395f55f65d53da756af8f742c805b927c65e3ccc959c04be9168475f966441d"},"schema_version":"1.0"},"canonical_sha256":"2bd4366a6a27cc30900f394a0a42355e6ce56daaa4199982e10a3892bfbf1671","source":{"kind":"arxiv","id":"astro-ph/0607266","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0607266","created_at":"2026-07-04T16:59:06Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0607266v1","created_at":"2026-07-04T16:59:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0607266","created_at":"2026-07-04T16:59:06Z"},{"alias_kind":"pith_short_12","alias_value":"FPKDM2TKE7GD","created_at":"2026-07-04T16:59:06Z"},{"alias_kind":"pith_short_16","alias_value":"FPKDM2TKE7GDBEAP","created_at":"2026-07-04T16:59:06Z"},{"alias_kind":"pith_short_8","alias_value":"FPKDM2TK","created_at":"2026-07-04T16:59:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:FPKDM2TKE7GDBEAPHFFAUQRVLZ","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0607266","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-12T19:28:34Z","cross_cats_sorted":[],"title_canon_sha256":"2321ad89d0d171eed92902fc3e814c54026e8b114027f806576efceebbf78038","abstract_canon_sha256":"3395f55f65d53da756af8f742c805b927c65e3ccc959c04be9168475f966441d"},"schema_version":"1.0"},"canonical_sha256":"2bd4366a6a27cc30900f394a0a42355e6ce56daaa4199982e10a3892bfbf1671","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:59:06.951743Z","signature_b64":"1pdgNu4wVP2QIi6khTd20dcFDnkqmRbwnQoF4cCSnEiVkgLL/hT7JGmpFN5NPKVlRM12rSV6oXCLQuu8RglEAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2bd4366a6a27cc30900f394a0a42355e6ce56daaa4199982e10a3892bfbf1671","last_reissued_at":"2026-07-04T16:59:06.951342Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:59:06.951342Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0607266","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":"2026-07-04T16:59:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t4UDmJ1awWAHsWXOee/u/RQk6xOX7h+V98DSfwpt+7/vwh2MGoX4MAPyHmG99feSePRWknCk7GHkdW/u+5SFAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T22:25:38.482672Z"},"content_sha256":"f4ffd2d05a31280bb16a0e324605a9b7b1ca3af16f39897de7384fc974313a50","schema_version":"1.0","event_id":"sha256:f4ffd2d05a31280bb16a0e324605a9b7b1ca3af16f39897de7384fc974313a50"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:FPKDM2TKE7GDBEAPHFFAUQRVLZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First science with SALT: peering at the accreting polar caps of the eclipsing polar SDSS J015543.40+002807.2","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Christians, A. Koeslag, A. Riddick, A. Swat, B. Meyer, C. du Plessis, C. Fourie, C. Gumede, C. Sass, D.A.H. Buckley, D.B. Carter, D. Bester, D. Metcalfe, D. O'Donoghue, E. Romero-Colmenero, F. Ebrahim, F. Marang, F. Osman, F. van Wyk, G.P. Evans, G. Swart, H. Gajjar, H. Kriel, H. Rall, H. Schalekamp, H. Steyn, J. Brink, J.G. Meiring, J. O'Connor, J. Stoffels, J. Stoltz, J. Swiegers, J.W. Menzies, L.A. Balona, L. Botha, L. Nel, M. de Kock, M. Gordon, N. Sessions, P.A. Charles, P. Fourie, P. Menzies, P. Vaisanen, R. Emmerich, S.B. Potter, S. Siyengo, T. Tiheli, V. Sopela, W. Esterhuyse, W.P. Koorts, W. Whittaker","submitted_at":"2006-07-12T19:28:34Z","abstract_excerpt":"We describe briefly the properties of the recently completed Southern African Large Telescope (SALT), along with its first light imager SALTICAM. Using this instrument, we present 4.3 hr of high speed unfiltered photometric observations of the eclipsing polar SDSSJ015543.40+002807.2 with time resolution as short as 112 ms, the highest quality observations of this kind of any polar to date. The system was observed during its high luminosity state. Two accreting poles are clearly seen in the eclipse light curve. The binary system parameters have been constrained: the white dwarf mass is at the l"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0607266","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/astro-ph/0607266/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":"2026-07-04T16:59:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tk7ytWwmgyf4Ciev53aqXJVRUMx212xltLFLEMyPzMkvydrhSZnKiUS4+QCk4hWh77RFp05myTEnNbaSQjIwDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T22:25:38.483312Z"},"content_sha256":"e8b8b7fc5fcde9f9caabd5db2b79f41c34c86ffd8d9679f19b59ea7d0e5081a8","schema_version":"1.0","event_id":"sha256:e8b8b7fc5fcde9f9caabd5db2b79f41c34c86ffd8d9679f19b59ea7d0e5081a8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FPKDM2TKE7GDBEAPHFFAUQRVLZ/bundle.json","state_url":"https://pith.science/pith/FPKDM2TKE7GDBEAPHFFAUQRVLZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FPKDM2TKE7GDBEAPHFFAUQRVLZ/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":"2026-08-05T22:25:38Z","links":{"resolver":"https://pith.science/pith/FPKDM2TKE7GDBEAPHFFAUQRVLZ","bundle":"https://pith.science/pith/FPKDM2TKE7GDBEAPHFFAUQRVLZ/bundle.json","state":"https://pith.science/pith/FPKDM2TKE7GDBEAPHFFAUQRVLZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FPKDM2TKE7GDBEAPHFFAUQRVLZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:FPKDM2TKE7GDBEAPHFFAUQRVLZ","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":"3395f55f65d53da756af8f742c805b927c65e3ccc959c04be9168475f966441d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-12T19:28:34Z","title_canon_sha256":"2321ad89d0d171eed92902fc3e814c54026e8b114027f806576efceebbf78038"},"schema_version":"1.0","source":{"id":"astro-ph/0607266","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0607266","created_at":"2026-07-04T16:59:06Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0607266v1","created_at":"2026-07-04T16:59:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0607266","created_at":"2026-07-04T16:59:06Z"},{"alias_kind":"pith_short_12","alias_value":"FPKDM2TKE7GD","created_at":"2026-07-04T16:59:06Z"},{"alias_kind":"pith_short_16","alias_value":"FPKDM2TKE7GDBEAP","created_at":"2026-07-04T16:59:06Z"},{"alias_kind":"pith_short_8","alias_value":"FPKDM2TK","created_at":"2026-07-04T16:59:06Z"}],"graph_snapshots":[{"event_id":"sha256:e8b8b7fc5fcde9f9caabd5db2b79f41c34c86ffd8d9679f19b59ea7d0e5081a8","target":"graph","created_at":"2026-07-04T16:59:06Z","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/astro-ph/0607266/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We describe briefly the properties of the recently completed Southern African Large Telescope (SALT), along with its first light imager SALTICAM. Using this instrument, we present 4.3 hr of high speed unfiltered photometric observations of the eclipsing polar SDSSJ015543.40+002807.2 with time resolution as short as 112 ms, the highest quality observations of this kind of any polar to date. The system was observed during its high luminosity state. Two accreting poles are clearly seen in the eclipse light curve. The binary system parameters have been constrained: the white dwarf mass is at the l","authors_text":"A. Christians, A. Koeslag, A. Riddick, A. Swat, B. Meyer, C. du Plessis, C. Fourie, C. Gumede, C. Sass, D.A.H. Buckley, D.B. Carter, D. Bester, D. Metcalfe, D. O'Donoghue, E. Romero-Colmenero, F. Ebrahim, F. Marang, F. Osman, F. van Wyk, G.P. Evans, G. Swart, H. Gajjar, H. Kriel, H. Rall, H. Schalekamp, H. Steyn, J. Brink, J.G. Meiring, J. O'Connor, J. Stoffels, J. Stoltz, J. Swiegers, J.W. Menzies, L.A. Balona, L. Botha, L. Nel, M. de Kock, M. Gordon, N. Sessions, P.A. Charles, P. Fourie, P. Menzies, P. Vaisanen, R. Emmerich, S.B. Potter, S. Siyengo, T. Tiheli, V. Sopela, W. Esterhuyse, W.P. Koorts, W. Whittaker","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-07-12T19:28:34Z","title":"First science with SALT: peering at the accreting polar caps of the eclipsing polar SDSS J015543.40+002807.2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0607266","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:f4ffd2d05a31280bb16a0e324605a9b7b1ca3af16f39897de7384fc974313a50","target":"record","created_at":"2026-07-04T16:59:06Z","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":"3395f55f65d53da756af8f742c805b927c65e3ccc959c04be9168475f966441d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-12T19:28:34Z","title_canon_sha256":"2321ad89d0d171eed92902fc3e814c54026e8b114027f806576efceebbf78038"},"schema_version":"1.0","source":{"id":"astro-ph/0607266","kind":"arxiv","version":1}},"canonical_sha256":"2bd4366a6a27cc30900f394a0a42355e6ce56daaa4199982e10a3892bfbf1671","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2bd4366a6a27cc30900f394a0a42355e6ce56daaa4199982e10a3892bfbf1671","first_computed_at":"2026-07-04T16:59:06.951342Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:59:06.951342Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1pdgNu4wVP2QIi6khTd20dcFDnkqmRbwnQoF4cCSnEiVkgLL/hT7JGmpFN5NPKVlRM12rSV6oXCLQuu8RglEAg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:59:06.951743Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0607266","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f4ffd2d05a31280bb16a0e324605a9b7b1ca3af16f39897de7384fc974313a50","sha256:e8b8b7fc5fcde9f9caabd5db2b79f41c34c86ffd8d9679f19b59ea7d0e5081a8"],"state_sha256":"9046b86d14ea3fb7d6ef4c790feedc7b610f82107abcc6e37f417313de93ad8b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EfoXO0WeGB8n8VGDg/lMCCqVIooio1UZ+hOL0jD+sn601pA0vBWYFFqPwnsHqkxPkDOy3WI50WQbY2dDpkhTDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T22:25:38.486925Z","bundle_sha256":"0a112e137f1fd69f5f8aa0e2238110026da239598db5ac570457828662ff7fb7"}}