{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:GPUBVYNE5W4BBFVHFJUUVCYRHY","short_pith_number":"pith:GPUBVYNE","canonical_record":{"source":{"id":"1104.4264","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-04-21T13:45:36Z","cross_cats_sorted":[],"title_canon_sha256":"0bfd4372b0a85524ab5a8ac0af79df0c70a0b4d6628ece6cc75fbc055b7d2660","abstract_canon_sha256":"2a2ce96caccb19f9248ca966239e52d9bb1f2e7e624f8a156f4f7eb97f219a82"},"schema_version":"1.0"},"canonical_sha256":"33e81ae1a4edb81096a72a694a8b113e19a97671d4bab089d655f7bc0db5bf69","source":{"kind":"arxiv","id":"1104.4264","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.4264","created_at":"2026-05-18T02:02:16Z"},{"alias_kind":"arxiv_version","alias_value":"1104.4264v1","created_at":"2026-05-18T02:02:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.4264","created_at":"2026-05-18T02:02:16Z"},{"alias_kind":"pith_short_12","alias_value":"GPUBVYNE5W4B","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"GPUBVYNE5W4BBFVH","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"GPUBVYNE","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:GPUBVYNE5W4BBFVHFJUUVCYRHY","target":"record","payload":{"canonical_record":{"source":{"id":"1104.4264","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-04-21T13:45:36Z","cross_cats_sorted":[],"title_canon_sha256":"0bfd4372b0a85524ab5a8ac0af79df0c70a0b4d6628ece6cc75fbc055b7d2660","abstract_canon_sha256":"2a2ce96caccb19f9248ca966239e52d9bb1f2e7e624f8a156f4f7eb97f219a82"},"schema_version":"1.0"},"canonical_sha256":"33e81ae1a4edb81096a72a694a8b113e19a97671d4bab089d655f7bc0db5bf69","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:16.758330Z","signature_b64":"qjtYv3FSeN8E7Df4vftHmc/1rKNRJjBd9wBiEjcegrKP5gzDzETADQlTR/GjUXGTMufRBlkuVICQNdbt9biRCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"33e81ae1a4edb81096a72a694a8b113e19a97671d4bab089d655f7bc0db5bf69","last_reissued_at":"2026-05-18T02:02:16.757375Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:16.757375Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.4264","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":"2026-05-18T02:02:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dRHbBlpQ472sGsaDGZH80J9SrioGTiE2ibXkEmllUmRcHM3IM5YEjSHw3icEmtLF5sorug1JxFfXqy6nySfLDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T06:17:32.565391Z"},"content_sha256":"65e20cd244739d1604b8d349fec356b4912bd25dc07d1b7e1b0930a73ab4ad06","schema_version":"1.0","event_id":"sha256:65e20cd244739d1604b8d349fec356b4912bd25dc07d1b7e1b0930a73ab4ad06"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:GPUBVYNE5W4BBFVHFJUUVCYRHY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectral states evolution of 4U 1728-34 observed by INTEGRAL and RXTE: non-thermal component detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Bazzano, A. Tarana, M. M\\'endez, P. Ubertini, T. Belloni","submitted_at":"2011-04-21T13:45:36Z","abstract_excerpt":"We report results of a one-year monitoring of the low mass X-ray binary (LMXB) source (atoll type) 4U 1728-34 with INTEGRAL and RXTE. Three time intervals were covered by INTEGRAL, during which the source showed strong spectral evolution. We studied the broad-band X-ray spectra in detail by fitting several models in the different sections of the hardness-intensity diagram. The soft states are characterised by prominent blackbody emission plus a contribution from a Comptonized emission. The hard states are characterised by the presence of an excess flux with respect to the Comptonization model "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.4264","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":"2026-05-18T02:02:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DNFhanbzlz/Kuu4OPG2HdmfutknFs+4d5xv/xnktDGVs96J7g2hjwq5MrE+UR/AFCCiW3M1IA00lC3xh4RMOBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T06:17:32.565782Z"},"content_sha256":"6b247f85c4fb420030f87d1d739ef757131df6f5b90bc86924f442e4f66531a0","schema_version":"1.0","event_id":"sha256:6b247f85c4fb420030f87d1d739ef757131df6f5b90bc86924f442e4f66531a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GPUBVYNE5W4BBFVHFJUUVCYRHY/bundle.json","state_url":"https://pith.science/pith/GPUBVYNE5W4BBFVHFJUUVCYRHY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GPUBVYNE5W4BBFVHFJUUVCYRHY/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":"2026-05-25T06:17:32Z","links":{"resolver":"https://pith.science/pith/GPUBVYNE5W4BBFVHFJUUVCYRHY","bundle":"https://pith.science/pith/GPUBVYNE5W4BBFVHFJUUVCYRHY/bundle.json","state":"https://pith.science/pith/GPUBVYNE5W4BBFVHFJUUVCYRHY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GPUBVYNE5W4BBFVHFJUUVCYRHY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:GPUBVYNE5W4BBFVHFJUUVCYRHY","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":"2a2ce96caccb19f9248ca966239e52d9bb1f2e7e624f8a156f4f7eb97f219a82","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-04-21T13:45:36Z","title_canon_sha256":"0bfd4372b0a85524ab5a8ac0af79df0c70a0b4d6628ece6cc75fbc055b7d2660"},"schema_version":"1.0","source":{"id":"1104.4264","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.4264","created_at":"2026-05-18T02:02:16Z"},{"alias_kind":"arxiv_version","alias_value":"1104.4264v1","created_at":"2026-05-18T02:02:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.4264","created_at":"2026-05-18T02:02:16Z"},{"alias_kind":"pith_short_12","alias_value":"GPUBVYNE5W4B","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"GPUBVYNE5W4BBFVH","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"GPUBVYNE","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:6b247f85c4fb420030f87d1d739ef757131df6f5b90bc86924f442e4f66531a0","target":"graph","created_at":"2026-05-18T02:02:16Z","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 report results of a one-year monitoring of the low mass X-ray binary (LMXB) source (atoll type) 4U 1728-34 with INTEGRAL and RXTE. Three time intervals were covered by INTEGRAL, during which the source showed strong spectral evolution. We studied the broad-band X-ray spectra in detail by fitting several models in the different sections of the hardness-intensity diagram. The soft states are characterised by prominent blackbody emission plus a contribution from a Comptonized emission. The hard states are characterised by the presence of an excess flux with respect to the Comptonization model ","authors_text":"A. Bazzano, A. Tarana, M. M\\'endez, P. Ubertini, T. Belloni","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-04-21T13:45:36Z","title":"Spectral states evolution of 4U 1728-34 observed by INTEGRAL and RXTE: non-thermal component detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.4264","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":"sha256:65e20cd244739d1604b8d349fec356b4912bd25dc07d1b7e1b0930a73ab4ad06","target":"record","created_at":"2026-05-18T02:02:16Z","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":"2a2ce96caccb19f9248ca966239e52d9bb1f2e7e624f8a156f4f7eb97f219a82","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-04-21T13:45:36Z","title_canon_sha256":"0bfd4372b0a85524ab5a8ac0af79df0c70a0b4d6628ece6cc75fbc055b7d2660"},"schema_version":"1.0","source":{"id":"1104.4264","kind":"arxiv","version":1}},"canonical_sha256":"33e81ae1a4edb81096a72a694a8b113e19a97671d4bab089d655f7bc0db5bf69","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"33e81ae1a4edb81096a72a694a8b113e19a97671d4bab089d655f7bc0db5bf69","first_computed_at":"2026-05-18T02:02:16.757375Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:16.757375Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qjtYv3FSeN8E7Df4vftHmc/1rKNRJjBd9wBiEjcegrKP5gzDzETADQlTR/GjUXGTMufRBlkuVICQNdbt9biRCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:16.758330Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.4264","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:65e20cd244739d1604b8d349fec356b4912bd25dc07d1b7e1b0930a73ab4ad06","sha256:6b247f85c4fb420030f87d1d739ef757131df6f5b90bc86924f442e4f66531a0"],"state_sha256":"ae8f96ff5960a28c4b6df2af42f40c7822ba350075586985f7b440b90260bc20"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iwHs4ibdET1YPqC+CoJdaObq0XDbHjsDv6qgAgFqBIe54C556BN0EvDtasRwuUXjlu9xaSlgz/TocIDIyrOZBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T06:17:32.568213Z","bundle_sha256":"4968cdd489d09b7e966890f88540c98ee376bf14122b865a1598303a2db44f42"}}