{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:CCB7RXLA54UMB3HMYGODC7DSTX","short_pith_number":"pith:CCB7RXLA","canonical_record":{"source":{"id":"0909.2470","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-09-14T19:42:55Z","cross_cats_sorted":[],"title_canon_sha256":"b9a6aac8ef47c57764bf6f0878645bfbe9f828b1dba8b9f2d87174a65d1eef25","abstract_canon_sha256":"862540da56d36b18b284b3e7277f6a3ba9348de3c81017fa25397acdf10f23b4"},"schema_version":"1.0"},"canonical_sha256":"1083f8dd60ef28c0ececc19c317c729df48bd756627fbf1350fceff29a5acadf","source":{"kind":"arxiv","id":"0909.2470","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.2470","created_at":"2026-07-04T17:23:32Z"},{"alias_kind":"arxiv_version","alias_value":"0909.2470v2","created_at":"2026-07-04T17:23:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.2470","created_at":"2026-07-04T17:23:32Z"},{"alias_kind":"pith_short_12","alias_value":"CCB7RXLA54UM","created_at":"2026-07-04T17:23:32Z"},{"alias_kind":"pith_short_16","alias_value":"CCB7RXLA54UMB3HM","created_at":"2026-07-04T17:23:32Z"},{"alias_kind":"pith_short_8","alias_value":"CCB7RXLA","created_at":"2026-07-04T17:23:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:CCB7RXLA54UMB3HMYGODC7DSTX","target":"record","payload":{"canonical_record":{"source":{"id":"0909.2470","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-09-14T19:42:55Z","cross_cats_sorted":[],"title_canon_sha256":"b9a6aac8ef47c57764bf6f0878645bfbe9f828b1dba8b9f2d87174a65d1eef25","abstract_canon_sha256":"862540da56d36b18b284b3e7277f6a3ba9348de3c81017fa25397acdf10f23b4"},"schema_version":"1.0"},"canonical_sha256":"1083f8dd60ef28c0ececc19c317c729df48bd756627fbf1350fceff29a5acadf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:23:32.136851Z","signature_b64":"m+Pin7rLpu8X6I/IyopLIVzzx7YawAR/CsVC7TwrO//h+iH9z6dPrjurPR70ahEllIhcuFxRujPhTTZw2lsrDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1083f8dd60ef28c0ececc19c317c729df48bd756627fbf1350fceff29a5acadf","last_reissued_at":"2026-07-04T17:23:32.136446Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:23:32.136446Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0909.2470","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T17:23:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wg5t7xOmXgd7X+0kI56jv47MoGjX0WcVlqHLtn9Gre9MNB6tEFRdDy4h4JpnkfjRvErRwaj3NUCptClEyWgKDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T17:35:02.136438Z"},"content_sha256":"8a415239252935a555834d2ade0f077cae6862a0614ffadc1472973f28b0d736","schema_version":"1.0","event_id":"sha256:8a415239252935a555834d2ade0f077cae6862a0614ffadc1472973f28b0d736"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:CCB7RXLA54UMB3HMYGODC7DSTX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fermi Observations of GRB 090902B: A Distinct Spectral Component in the Prompt and Delayed Emission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"The Fermi/GBM collaboration, The Fermi/LAT Collaborations, The Swift Team","submitted_at":"2009-09-14T19:42:55Z","abstract_excerpt":"We report on the observation of the bright, long gamma-ray burst, GRB 090902B, by the Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) instruments on-board the Fermi observatory. This was one of the brightest GRBs to have been observed by the LAT, which detected several hundred photons during the prompt phase. With a redshift of z = 1.822, this burst is among the most luminous detected by Fermi. Time-resolved spectral analysis reveals a significant power-law component in the LAT data that is distinct from the usual Band model emission that is seen in the sub-MeV energy range. This "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.2470","kind":"arxiv","version":2},"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/0909.2470/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":"2026-07-04T17:23:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0oKTMI1evsdGHi4XleMwLdZoIhmAhpuWqmYUOEAXqnHx07z/dlYddhw3VP31cBOPr8cxC7X7aiwusX+/efhbBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T17:35:02.136911Z"},"content_sha256":"a931201d6fe9da905c60c3988ae805abfa2a0e59e7b2519c7ac9c9bb11cbd4ef","schema_version":"1.0","event_id":"sha256:a931201d6fe9da905c60c3988ae805abfa2a0e59e7b2519c7ac9c9bb11cbd4ef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CCB7RXLA54UMB3HMYGODC7DSTX/bundle.json","state_url":"https://pith.science/pith/CCB7RXLA54UMB3HMYGODC7DSTX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CCB7RXLA54UMB3HMYGODC7DSTX/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":"2026-08-02T17:35:02Z","links":{"resolver":"https://pith.science/pith/CCB7RXLA54UMB3HMYGODC7DSTX","bundle":"https://pith.science/pith/CCB7RXLA54UMB3HMYGODC7DSTX/bundle.json","state":"https://pith.science/pith/CCB7RXLA54UMB3HMYGODC7DSTX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CCB7RXLA54UMB3HMYGODC7DSTX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:CCB7RXLA54UMB3HMYGODC7DSTX","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":"862540da56d36b18b284b3e7277f6a3ba9348de3c81017fa25397acdf10f23b4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-09-14T19:42:55Z","title_canon_sha256":"b9a6aac8ef47c57764bf6f0878645bfbe9f828b1dba8b9f2d87174a65d1eef25"},"schema_version":"1.0","source":{"id":"0909.2470","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.2470","created_at":"2026-07-04T17:23:32Z"},{"alias_kind":"arxiv_version","alias_value":"0909.2470v2","created_at":"2026-07-04T17:23:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.2470","created_at":"2026-07-04T17:23:32Z"},{"alias_kind":"pith_short_12","alias_value":"CCB7RXLA54UM","created_at":"2026-07-04T17:23:32Z"},{"alias_kind":"pith_short_16","alias_value":"CCB7RXLA54UMB3HM","created_at":"2026-07-04T17:23:32Z"},{"alias_kind":"pith_short_8","alias_value":"CCB7RXLA","created_at":"2026-07-04T17:23:32Z"}],"graph_snapshots":[{"event_id":"sha256:a931201d6fe9da905c60c3988ae805abfa2a0e59e7b2519c7ac9c9bb11cbd4ef","target":"graph","created_at":"2026-07-04T17:23:32Z","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/0909.2470/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on the observation of the bright, long gamma-ray burst, GRB 090902B, by the Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) instruments on-board the Fermi observatory. This was one of the brightest GRBs to have been observed by the LAT, which detected several hundred photons during the prompt phase. With a redshift of z = 1.822, this burst is among the most luminous detected by Fermi. Time-resolved spectral analysis reveals a significant power-law component in the LAT data that is distinct from the usual Band model emission that is seen in the sub-MeV energy range. This ","authors_text":"The Fermi/GBM collaboration, The Fermi/LAT Collaborations, The Swift Team","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-09-14T19:42:55Z","title":"Fermi Observations of GRB 090902B: A Distinct Spectral Component in the Prompt and Delayed Emission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.2470","kind":"arxiv","version":2},"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":"sha256:8a415239252935a555834d2ade0f077cae6862a0614ffadc1472973f28b0d736","target":"record","created_at":"2026-07-04T17:23:32Z","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":"862540da56d36b18b284b3e7277f6a3ba9348de3c81017fa25397acdf10f23b4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-09-14T19:42:55Z","title_canon_sha256":"b9a6aac8ef47c57764bf6f0878645bfbe9f828b1dba8b9f2d87174a65d1eef25"},"schema_version":"1.0","source":{"id":"0909.2470","kind":"arxiv","version":2}},"canonical_sha256":"1083f8dd60ef28c0ececc19c317c729df48bd756627fbf1350fceff29a5acadf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1083f8dd60ef28c0ececc19c317c729df48bd756627fbf1350fceff29a5acadf","first_computed_at":"2026-07-04T17:23:32.136446Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:23:32.136446Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m+Pin7rLpu8X6I/IyopLIVzzx7YawAR/CsVC7TwrO//h+iH9z6dPrjurPR70ahEllIhcuFxRujPhTTZw2lsrDg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:23:32.136851Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.2470","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a415239252935a555834d2ade0f077cae6862a0614ffadc1472973f28b0d736","sha256:a931201d6fe9da905c60c3988ae805abfa2a0e59e7b2519c7ac9c9bb11cbd4ef"],"state_sha256":"538f0505b89aa44f0ba3f8768cfb45f509800a79f0a4bcda595dec211ec004c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DNVtgKaWDj8Cxtr9DbFD5Di8ZbJZF3EpmSf4fSQsFEXQbCp1ALsnNNVPYA8lk8PSFS0TMqSoye9jNct1/aI0Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T17:35:02.140128Z","bundle_sha256":"0dd59a47a86a0316c20ea0fbcb244ad0ce851fd04ba640cd5963dbdcc82aa777"}}