{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:Z3TG2ZPZEOKQFF4VE6TNM4DK4Q","short_pith_number":"pith:Z3TG2ZPZ","canonical_record":{"source":{"id":"1311.5245","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-11-20T21:53:41Z","cross_cats_sorted":[],"title_canon_sha256":"e0f571b956928686efa835d30739a9ee96162aea298327e16de96a73c653282e","abstract_canon_sha256":"e873675febe80ed54bc7d88a04c5c3ecaa1020d7d943376c5962ff6040404dbe"},"schema_version":"1.0"},"canonical_sha256":"cee66d65f9239502979527a6d6706ae43a3947ac462a46a13b9323f240e619bd","source":{"kind":"arxiv","id":"1311.5245","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.5245","created_at":"2026-05-18T01:46:11Z"},{"alias_kind":"arxiv_version","alias_value":"1311.5245v1","created_at":"2026-05-18T01:46:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.5245","created_at":"2026-05-18T01:46:11Z"},{"alias_kind":"pith_short_12","alias_value":"Z3TG2ZPZEOKQ","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"Z3TG2ZPZEOKQFF4V","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"Z3TG2ZPZ","created_at":"2026-05-18T12:28:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:Z3TG2ZPZEOKQFF4VE6TNM4DK4Q","target":"record","payload":{"canonical_record":{"source":{"id":"1311.5245","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-11-20T21:53:41Z","cross_cats_sorted":[],"title_canon_sha256":"e0f571b956928686efa835d30739a9ee96162aea298327e16de96a73c653282e","abstract_canon_sha256":"e873675febe80ed54bc7d88a04c5c3ecaa1020d7d943376c5962ff6040404dbe"},"schema_version":"1.0"},"canonical_sha256":"cee66d65f9239502979527a6d6706ae43a3947ac462a46a13b9323f240e619bd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:46:11.889599Z","signature_b64":"u5CjaB2iUg8Ks5HSgGQbgbjoQoF8W6PFVyzkhyMHVQDvvdeqLyH3mKQ8dxNdZK/xhO2rzi291SjheG+8sr/3Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cee66d65f9239502979527a6d6706ae43a3947ac462a46a13b9323f240e619bd","last_reissued_at":"2026-05-18T01:46:11.889100Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:46:11.889100Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.5245","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":"2026-05-18T01:46:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2Pt9aPr6xfGinNRX5/Mj75Uw4s8gZc4InRl5sf1L/Z5jPS/hUU1z6aJTZL2FPuCX9vTYNGnGEVvFOfoixL0HBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T13:27:30.402789Z"},"content_sha256":"cdb2340ae84f78817993985db4222479ebcb33ce65717bbeadce5e8803e92f36","schema_version":"1.0","event_id":"sha256:cdb2340ae84f78817993985db4222479ebcb33ce65717bbeadce5e8803e92f36"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:Z3TG2ZPZEOKQFF4VE6TNM4DK4Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"NuSTAR Observations of GRB130427A establish a single component synchrotron afterglow origin for the late optical to multi-GeV emission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Melandri, C. D. Dermer, C. G. Mundell, C. J. Hailey, C. Kouveliotou, C. L. Fryer, D. K. Stern, E. Bellm, F. A. Harrison, F. E. Christensen, G. Tagliaferri, G. Vianello, J. E. McEnery, J. Granot, J. L. Racusin, N. Gehrels, S. E. Boggs, S. Oates, W. W. Craig, W. W. Zhang","submitted_at":"2013-11-20T21:53:41Z","abstract_excerpt":"GRB 130427A occurred in a relatively nearby galaxy; its prompt emission had the largest GRB fluence ever recorded. The afterglow of GRB 130427A was bright enough for the Nuclear Spectroscopic Telescope ARray (NuSTAR) to observe it in the 3-79 keV energy range long after its prompt emission (~1.5 and 5 days). This range, where afterglow observations were previously not possible, bridges an important spectral gap. Combined with Swift, Fermi and ground-based optical data, NuSTAR observations unambiguously establish a single afterglow spectral component from optical to multi-GeV energies a day aft"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.5245","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":"2026-05-18T01:46:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FIRRzpf68USA+u0nwzpn/4OnLsB1GOvFfY8kHS/t3bpIPzsHs+GLUoTio8klBxJ8uO+XLzYIDktaY1yEvYqrBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T13:27:30.403154Z"},"content_sha256":"3c40d451d017dfd734f97d3db9453894d9c6d9d5eca7c6ed7cb168ac8f0e7809","schema_version":"1.0","event_id":"sha256:3c40d451d017dfd734f97d3db9453894d9c6d9d5eca7c6ed7cb168ac8f0e7809"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z3TG2ZPZEOKQFF4VE6TNM4DK4Q/bundle.json","state_url":"https://pith.science/pith/Z3TG2ZPZEOKQFF4VE6TNM4DK4Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z3TG2ZPZEOKQFF4VE6TNM4DK4Q/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":"2026-05-19T13:27:30Z","links":{"resolver":"https://pith.science/pith/Z3TG2ZPZEOKQFF4VE6TNM4DK4Q","bundle":"https://pith.science/pith/Z3TG2ZPZEOKQFF4VE6TNM4DK4Q/bundle.json","state":"https://pith.science/pith/Z3TG2ZPZEOKQFF4VE6TNM4DK4Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z3TG2ZPZEOKQFF4VE6TNM4DK4Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:Z3TG2ZPZEOKQFF4VE6TNM4DK4Q","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":"e873675febe80ed54bc7d88a04c5c3ecaa1020d7d943376c5962ff6040404dbe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-11-20T21:53:41Z","title_canon_sha256":"e0f571b956928686efa835d30739a9ee96162aea298327e16de96a73c653282e"},"schema_version":"1.0","source":{"id":"1311.5245","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.5245","created_at":"2026-05-18T01:46:11Z"},{"alias_kind":"arxiv_version","alias_value":"1311.5245v1","created_at":"2026-05-18T01:46:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.5245","created_at":"2026-05-18T01:46:11Z"},{"alias_kind":"pith_short_12","alias_value":"Z3TG2ZPZEOKQ","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"Z3TG2ZPZEOKQFF4V","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"Z3TG2ZPZ","created_at":"2026-05-18T12:28:09Z"}],"graph_snapshots":[{"event_id":"sha256:3c40d451d017dfd734f97d3db9453894d9c6d9d5eca7c6ed7cb168ac8f0e7809","target":"graph","created_at":"2026-05-18T01:46:11Z","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":"GRB 130427A occurred in a relatively nearby galaxy; its prompt emission had the largest GRB fluence ever recorded. The afterglow of GRB 130427A was bright enough for the Nuclear Spectroscopic Telescope ARray (NuSTAR) to observe it in the 3-79 keV energy range long after its prompt emission (~1.5 and 5 days). This range, where afterglow observations were previously not possible, bridges an important spectral gap. Combined with Swift, Fermi and ground-based optical data, NuSTAR observations unambiguously establish a single afterglow spectral component from optical to multi-GeV energies a day aft","authors_text":"A. Melandri, C. D. Dermer, C. G. Mundell, C. J. Hailey, C. Kouveliotou, C. L. Fryer, D. K. Stern, E. Bellm, F. A. Harrison, F. E. Christensen, G. Tagliaferri, G. Vianello, J. E. McEnery, J. Granot, J. L. Racusin, N. Gehrels, S. E. Boggs, S. Oates, W. W. Craig, W. W. Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-11-20T21:53:41Z","title":"NuSTAR Observations of GRB130427A establish a single component synchrotron afterglow origin for the late optical to multi-GeV emission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.5245","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:cdb2340ae84f78817993985db4222479ebcb33ce65717bbeadce5e8803e92f36","target":"record","created_at":"2026-05-18T01:46:11Z","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":"e873675febe80ed54bc7d88a04c5c3ecaa1020d7d943376c5962ff6040404dbe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-11-20T21:53:41Z","title_canon_sha256":"e0f571b956928686efa835d30739a9ee96162aea298327e16de96a73c653282e"},"schema_version":"1.0","source":{"id":"1311.5245","kind":"arxiv","version":1}},"canonical_sha256":"cee66d65f9239502979527a6d6706ae43a3947ac462a46a13b9323f240e619bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cee66d65f9239502979527a6d6706ae43a3947ac462a46a13b9323f240e619bd","first_computed_at":"2026-05-18T01:46:11.889100Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:46:11.889100Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"u5CjaB2iUg8Ks5HSgGQbgbjoQoF8W6PFVyzkhyMHVQDvvdeqLyH3mKQ8dxNdZK/xhO2rzi291SjheG+8sr/3Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:46:11.889599Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.5245","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cdb2340ae84f78817993985db4222479ebcb33ce65717bbeadce5e8803e92f36","sha256:3c40d451d017dfd734f97d3db9453894d9c6d9d5eca7c6ed7cb168ac8f0e7809"],"state_sha256":"b4816516641b46cebf5103e7dc276427e9fadd91091e254ce1ae3e33e1872121"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FceCRyXtThuc7RdiBwt42WnH48qjWgOnq6FXXbXYQQCv360x8Oq2ZaSHC2518LMVFSCdzPT6CyAyvsuTdPs+AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T13:27:30.405015Z","bundle_sha256":"72fa6b8e2f0cf267d1f85d57ed43a7a14a2a650f9c02c87b3cea5af192e02148"}}