{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:4RBMZB7IVFGP2ZFN3EW5Z7R55U","short_pith_number":"pith:4RBMZB7I","canonical_record":{"source":{"id":"1301.3926","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-01-16T21:30:51Z","cross_cats_sorted":[],"title_canon_sha256":"da002b186bb48f186486fb6adc941a15836fdfe46a6aa96f37c0ee76baa62962","abstract_canon_sha256":"ced7c68e54cd372087aa3c7dcb3e6d7827c8ece6961ae2338af1aab9b5ea87f3"},"schema_version":"1.0"},"canonical_sha256":"e442cc87e8a94cfd64add92ddcfe3ded2a7104bfff75fd98ab9b183a09bc4087","source":{"kind":"arxiv","id":"1301.3926","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.3926","created_at":"2026-05-18T03:36:14Z"},{"alias_kind":"arxiv_version","alias_value":"1301.3926v1","created_at":"2026-05-18T03:36:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.3926","created_at":"2026-05-18T03:36:14Z"},{"alias_kind":"pith_short_12","alias_value":"4RBMZB7IVFGP","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4RBMZB7IVFGP2ZFN","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4RBMZB7I","created_at":"2026-05-18T12:27:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:4RBMZB7IVFGP2ZFN3EW5Z7R55U","target":"record","payload":{"canonical_record":{"source":{"id":"1301.3926","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-01-16T21:30:51Z","cross_cats_sorted":[],"title_canon_sha256":"da002b186bb48f186486fb6adc941a15836fdfe46a6aa96f37c0ee76baa62962","abstract_canon_sha256":"ced7c68e54cd372087aa3c7dcb3e6d7827c8ece6961ae2338af1aab9b5ea87f3"},"schema_version":"1.0"},"canonical_sha256":"e442cc87e8a94cfd64add92ddcfe3ded2a7104bfff75fd98ab9b183a09bc4087","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:36:14.852940Z","signature_b64":"j03kq1DBeXtcuPSxsYRchk8efTv9/2MqudRt9Q1jBk4yUBIvccIl10k90ooekEtwUJ5enP2qZfAfeImlXtM1Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e442cc87e8a94cfd64add92ddcfe3ded2a7104bfff75fd98ab9b183a09bc4087","last_reissued_at":"2026-05-18T03:36:14.852362Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:36:14.852362Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1301.3926","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":"2026-05-18T03:36:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7ir8XMNmTrKgLytERouVC6ZC7v+IILpl9v9Ygt4lNEHexUOnTsNI9Q0gGMK19i9vF2BNNi+cZfTVYhMyp7OmBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T16:06:57.092198Z"},"content_sha256":"683906355bbe19743f5c6e37b6ff68a9710697583b22e08c49aaa7ce58152e93","schema_version":"1.0","event_id":"sha256:683906355bbe19743f5c6e37b6ff68a9710697583b22e08c49aaa7ce58152e93"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:4RBMZB7IVFGP2ZFN3EW5Z7R55U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cloud Computing with Context Cameras","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. J. Pickles, W. E. Rosing","submitted_at":"2013-01-16T21:30:51Z","abstract_excerpt":"We summarize methods and plans to monitor and calibrate photometric observations with our autonomous, robotic network of 2m, 1m and 40cm telescopes. These are sited globally to optimize our ability to observe time-variable sources. Wide field \"context\" cameras are aligned with our network telescopes and cycle every 2 minutes through BVriz filters, spanning our optical range. We measure instantaneous zero-point offsets and transparency (throughput) against calibrators in the 5-12m range from the all-sky Tycho2 catalog, and periodically against primary standards. Similar measurements are made fo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.3926","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":"2026-05-18T03:36:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OXeOC9dxqRa7DDTsfhu3dYRGMbEqjx6JBHnqpkeGgm5dT4D0Nyl6VPIcGbKB2bt3UyJ6dwG3wu0CsTjq/USTBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T16:06:57.092561Z"},"content_sha256":"cf83e858f0179d19e8668f03f8a34c37e1338d91553a10abbc354c5c388261f5","schema_version":"1.0","event_id":"sha256:cf83e858f0179d19e8668f03f8a34c37e1338d91553a10abbc354c5c388261f5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4RBMZB7IVFGP2ZFN3EW5Z7R55U/bundle.json","state_url":"https://pith.science/pith/4RBMZB7IVFGP2ZFN3EW5Z7R55U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4RBMZB7IVFGP2ZFN3EW5Z7R55U/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":"2026-06-03T16:06:57Z","links":{"resolver":"https://pith.science/pith/4RBMZB7IVFGP2ZFN3EW5Z7R55U","bundle":"https://pith.science/pith/4RBMZB7IVFGP2ZFN3EW5Z7R55U/bundle.json","state":"https://pith.science/pith/4RBMZB7IVFGP2ZFN3EW5Z7R55U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4RBMZB7IVFGP2ZFN3EW5Z7R55U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:4RBMZB7IVFGP2ZFN3EW5Z7R55U","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":"ced7c68e54cd372087aa3c7dcb3e6d7827c8ece6961ae2338af1aab9b5ea87f3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-01-16T21:30:51Z","title_canon_sha256":"da002b186bb48f186486fb6adc941a15836fdfe46a6aa96f37c0ee76baa62962"},"schema_version":"1.0","source":{"id":"1301.3926","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.3926","created_at":"2026-05-18T03:36:14Z"},{"alias_kind":"arxiv_version","alias_value":"1301.3926v1","created_at":"2026-05-18T03:36:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.3926","created_at":"2026-05-18T03:36:14Z"},{"alias_kind":"pith_short_12","alias_value":"4RBMZB7IVFGP","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4RBMZB7IVFGP2ZFN","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4RBMZB7I","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:cf83e858f0179d19e8668f03f8a34c37e1338d91553a10abbc354c5c388261f5","target":"graph","created_at":"2026-05-18T03:36:14Z","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":"We summarize methods and plans to monitor and calibrate photometric observations with our autonomous, robotic network of 2m, 1m and 40cm telescopes. These are sited globally to optimize our ability to observe time-variable sources. Wide field \"context\" cameras are aligned with our network telescopes and cycle every 2 minutes through BVriz filters, spanning our optical range. We measure instantaneous zero-point offsets and transparency (throughput) against calibrators in the 5-12m range from the all-sky Tycho2 catalog, and periodically against primary standards. Similar measurements are made fo","authors_text":"A. J. Pickles, W. E. Rosing","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-01-16T21:30:51Z","title":"Cloud Computing with Context Cameras"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.3926","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":"sha256:683906355bbe19743f5c6e37b6ff68a9710697583b22e08c49aaa7ce58152e93","target":"record","created_at":"2026-05-18T03:36:14Z","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":"ced7c68e54cd372087aa3c7dcb3e6d7827c8ece6961ae2338af1aab9b5ea87f3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-01-16T21:30:51Z","title_canon_sha256":"da002b186bb48f186486fb6adc941a15836fdfe46a6aa96f37c0ee76baa62962"},"schema_version":"1.0","source":{"id":"1301.3926","kind":"arxiv","version":1}},"canonical_sha256":"e442cc87e8a94cfd64add92ddcfe3ded2a7104bfff75fd98ab9b183a09bc4087","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e442cc87e8a94cfd64add92ddcfe3ded2a7104bfff75fd98ab9b183a09bc4087","first_computed_at":"2026-05-18T03:36:14.852362Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:36:14.852362Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j03kq1DBeXtcuPSxsYRchk8efTv9/2MqudRt9Q1jBk4yUBIvccIl10k90ooekEtwUJ5enP2qZfAfeImlXtM1Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:36:14.852940Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.3926","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:683906355bbe19743f5c6e37b6ff68a9710697583b22e08c49aaa7ce58152e93","sha256:cf83e858f0179d19e8668f03f8a34c37e1338d91553a10abbc354c5c388261f5"],"state_sha256":"0a29d8194607b3ee822b7cc081b0077a7830bfc3bec9dbe2e9053452b2a3da13"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zavAY4t+MxdqZlt7w00YR7jTbzSQusQ1GYa/J+dMV+AuhS/jih9u5+LBCL/nFuj654v/PvDVkw/BbvOCozf8DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T16:06:57.094424Z","bundle_sha256":"dd212369b00d20266cbd5104511a0f2ee243c4eeca41eeb077db3437bada7653"}}