{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:4TQ4WZ4VYVY47XBMCSVMJPIKAJ","short_pith_number":"pith:4TQ4WZ4V","canonical_record":{"source":{"id":"0802.3724","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-02-26T00:48:39Z","cross_cats_sorted":[],"title_canon_sha256":"b2051bf145b849aa04ec3fd3bc9591cf96d3b1ff1e0cf0c024d43cd87de00c26","abstract_canon_sha256":"16ae8fc27515339bc41d8d5dd6b2ce9ca339022d72227380ff634336583ed00a"},"schema_version":"1.0"},"canonical_sha256":"e4e1cb6795c571cfdc2c14aac4bd0a02748bf0821e0b818dcd9bac3021b6e5ba","source":{"kind":"arxiv","id":"0802.3724","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0802.3724","created_at":"2026-07-04T17:09:34Z"},{"alias_kind":"arxiv_version","alias_value":"0802.3724v1","created_at":"2026-07-04T17:09:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0802.3724","created_at":"2026-07-04T17:09:34Z"},{"alias_kind":"pith_short_12","alias_value":"4TQ4WZ4VYVY4","created_at":"2026-07-04T17:09:34Z"},{"alias_kind":"pith_short_16","alias_value":"4TQ4WZ4VYVY47XBM","created_at":"2026-07-04T17:09:34Z"},{"alias_kind":"pith_short_8","alias_value":"4TQ4WZ4V","created_at":"2026-07-04T17:09:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:4TQ4WZ4VYVY47XBMCSVMJPIKAJ","target":"record","payload":{"canonical_record":{"source":{"id":"0802.3724","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-02-26T00:48:39Z","cross_cats_sorted":[],"title_canon_sha256":"b2051bf145b849aa04ec3fd3bc9591cf96d3b1ff1e0cf0c024d43cd87de00c26","abstract_canon_sha256":"16ae8fc27515339bc41d8d5dd6b2ce9ca339022d72227380ff634336583ed00a"},"schema_version":"1.0"},"canonical_sha256":"e4e1cb6795c571cfdc2c14aac4bd0a02748bf0821e0b818dcd9bac3021b6e5ba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:09:34.527271Z","signature_b64":"ViBV7nEaNd/bapBqYN61LOE12sBN70354g/BwGGEyZ+/OTAwuH29HB6BhHkWv10ODmvSJzYS13NF/uCOXabJDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4e1cb6795c571cfdc2c14aac4bd0a02748bf0821e0b818dcd9bac3021b6e5ba","last_reissued_at":"2026-07-04T17:09:34.526884Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:09:34.526884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0802.3724","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":"2026-07-04T17:09:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NjOeAe0lBQoqW410H4psX6QTVJO/vDCC3NrE5KTTPQQJeYxcigfghXEH5R+1QkQzrq074Xe+ghe4tkyTV0tKDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T14:16:44.746220Z"},"content_sha256":"f24ad461915f60daa9bc39e0225454a30d664cfee3cd6de01e13e89d13c14934","schema_version":"1.0","event_id":"sha256:f24ad461915f60daa9bc39e0225454a30d664cfee3cd6de01e13e89d13c14934"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:4TQ4WZ4VYVY47XBMCSVMJPIKAJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Chandra ACIS Survey of M33 (ChASeM33): Transient X-ray Sources Discovered in M33","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Avi Shporer, Benjamin F. Williams, Frank Haberl, Manami Sasaki, Parviz Ghavamian, Paul P. Plucinsky, Terrance J. Gaetz, Thomas G. Pannuti, T. Mazeh, Wolfgang Pietsch","submitted_at":"2008-02-26T00:48:39Z","abstract_excerpt":"The Chandra ACIS Survey of M33 (ChASeM33) has acquired 7 fields of ACIS data covering M33 with 200 ks of exposure in each field. A catalog from the first 10 months of data, along with archival Chandra observations dating back to the year 2000, is currently available. We have searched these data for transient sources that are measured to have a 0.35-8.0 keV unabsorbed luminosity of at least 4$\\times10^{35}$ erg s$^{-1}$ in one epoch and are not detected in another epoch. This set of the survey data has yielded seven such sources, including one previously-known supersoft source. We analyzed XMM-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0802.3724","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/0802.3724/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":"2026-07-04T17:09:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7n4pgJdzQf8bDuywqyQ4Tl6/I65MMIo8oT89XzytGzfM4bqWdxknptFZhtKutlUYnWxC0gdKKpzME8wKW7tKDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T14:16:44.746609Z"},"content_sha256":"daa27b4825ae92d0b0275ed96e9734368fef65516bc0bbea4d69a2b1f73f3c29","schema_version":"1.0","event_id":"sha256:daa27b4825ae92d0b0275ed96e9734368fef65516bc0bbea4d69a2b1f73f3c29"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4TQ4WZ4VYVY47XBMCSVMJPIKAJ/bundle.json","state_url":"https://pith.science/pith/4TQ4WZ4VYVY47XBMCSVMJPIKAJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4TQ4WZ4VYVY47XBMCSVMJPIKAJ/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":"2026-07-11T14:16:44Z","links":{"resolver":"https://pith.science/pith/4TQ4WZ4VYVY47XBMCSVMJPIKAJ","bundle":"https://pith.science/pith/4TQ4WZ4VYVY47XBMCSVMJPIKAJ/bundle.json","state":"https://pith.science/pith/4TQ4WZ4VYVY47XBMCSVMJPIKAJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4TQ4WZ4VYVY47XBMCSVMJPIKAJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:4TQ4WZ4VYVY47XBMCSVMJPIKAJ","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":"16ae8fc27515339bc41d8d5dd6b2ce9ca339022d72227380ff634336583ed00a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-02-26T00:48:39Z","title_canon_sha256":"b2051bf145b849aa04ec3fd3bc9591cf96d3b1ff1e0cf0c024d43cd87de00c26"},"schema_version":"1.0","source":{"id":"0802.3724","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0802.3724","created_at":"2026-07-04T17:09:34Z"},{"alias_kind":"arxiv_version","alias_value":"0802.3724v1","created_at":"2026-07-04T17:09:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0802.3724","created_at":"2026-07-04T17:09:34Z"},{"alias_kind":"pith_short_12","alias_value":"4TQ4WZ4VYVY4","created_at":"2026-07-04T17:09:34Z"},{"alias_kind":"pith_short_16","alias_value":"4TQ4WZ4VYVY47XBM","created_at":"2026-07-04T17:09:34Z"},{"alias_kind":"pith_short_8","alias_value":"4TQ4WZ4V","created_at":"2026-07-04T17:09:34Z"}],"graph_snapshots":[{"event_id":"sha256:daa27b4825ae92d0b0275ed96e9734368fef65516bc0bbea4d69a2b1f73f3c29","target":"graph","created_at":"2026-07-04T17:09:34Z","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/0802.3724/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Chandra ACIS Survey of M33 (ChASeM33) has acquired 7 fields of ACIS data covering M33 with 200 ks of exposure in each field. A catalog from the first 10 months of data, along with archival Chandra observations dating back to the year 2000, is currently available. We have searched these data for transient sources that are measured to have a 0.35-8.0 keV unabsorbed luminosity of at least 4$\\times10^{35}$ erg s$^{-1}$ in one epoch and are not detected in another epoch. This set of the survey data has yielded seven such sources, including one previously-known supersoft source. We analyzed XMM-","authors_text":"Avi Shporer, Benjamin F. Williams, Frank Haberl, Manami Sasaki, Parviz Ghavamian, Paul P. Plucinsky, Terrance J. Gaetz, Thomas G. Pannuti, T. Mazeh, Wolfgang Pietsch","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-02-26T00:48:39Z","title":"The Chandra ACIS Survey of M33 (ChASeM33): Transient X-ray Sources Discovered in M33"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0802.3724","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:f24ad461915f60daa9bc39e0225454a30d664cfee3cd6de01e13e89d13c14934","target":"record","created_at":"2026-07-04T17:09:34Z","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":"16ae8fc27515339bc41d8d5dd6b2ce9ca339022d72227380ff634336583ed00a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-02-26T00:48:39Z","title_canon_sha256":"b2051bf145b849aa04ec3fd3bc9591cf96d3b1ff1e0cf0c024d43cd87de00c26"},"schema_version":"1.0","source":{"id":"0802.3724","kind":"arxiv","version":1}},"canonical_sha256":"e4e1cb6795c571cfdc2c14aac4bd0a02748bf0821e0b818dcd9bac3021b6e5ba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e4e1cb6795c571cfdc2c14aac4bd0a02748bf0821e0b818dcd9bac3021b6e5ba","first_computed_at":"2026-07-04T17:09:34.526884Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:09:34.526884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ViBV7nEaNd/bapBqYN61LOE12sBN70354g/BwGGEyZ+/OTAwuH29HB6BhHkWv10ODmvSJzYS13NF/uCOXabJDQ==","signature_status":"signed_v1","signed_at":"2026-07-04T17:09:34.527271Z","signed_message":"canonical_sha256_bytes"},"source_id":"0802.3724","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f24ad461915f60daa9bc39e0225454a30d664cfee3cd6de01e13e89d13c14934","sha256:daa27b4825ae92d0b0275ed96e9734368fef65516bc0bbea4d69a2b1f73f3c29"],"state_sha256":"8a63b439e391c9e1236bd3e499d8b6a161e35282a2ecc9907ccaa2bb1b7c9891"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FJV+lK8+hmdYSqQTKdXZtgKhgotMiFHu0JOfrr+crb3nM7068IyMBuaygAdgk7yNKmrskaSm7ifsT8ExC3dgDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-11T14:16:44.748842Z","bundle_sha256":"f7abd89e723277050b7cf5fee7b112c7096f669ee5cfa9a89cccf1b185fe3e72"}}