{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:3ZFL4GZO2MAZQRHYXZA2CWYXMU","short_pith_number":"pith:3ZFL4GZO","canonical_record":{"source":{"id":"1404.3727","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-04-14T20:00:21Z","cross_cats_sorted":[],"title_canon_sha256":"40dc20f3d5ec412a87dcd3ed30d5cfed058d1e213cb893a4f62f2b2078205f7a","abstract_canon_sha256":"9ab7e07ec76030a7e615b1e3a55e02d08ac2732bae65741c7c8a35b8142cdd8f"},"schema_version":"1.0"},"canonical_sha256":"de4abe1b2ed3019844f8be41a15b17650eb2682ee0a5643b047e56a3a014dd33","source":{"kind":"arxiv","id":"1404.3727","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.3727","created_at":"2026-05-18T01:43:34Z"},{"alias_kind":"arxiv_version","alias_value":"1404.3727v1","created_at":"2026-05-18T01:43:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.3727","created_at":"2026-05-18T01:43:34Z"},{"alias_kind":"pith_short_12","alias_value":"3ZFL4GZO2MAZ","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"3ZFL4GZO2MAZQRHY","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"3ZFL4GZO","created_at":"2026-05-18T12:28:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:3ZFL4GZO2MAZQRHYXZA2CWYXMU","target":"record","payload":{"canonical_record":{"source":{"id":"1404.3727","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-04-14T20:00:21Z","cross_cats_sorted":[],"title_canon_sha256":"40dc20f3d5ec412a87dcd3ed30d5cfed058d1e213cb893a4f62f2b2078205f7a","abstract_canon_sha256":"9ab7e07ec76030a7e615b1e3a55e02d08ac2732bae65741c7c8a35b8142cdd8f"},"schema_version":"1.0"},"canonical_sha256":"de4abe1b2ed3019844f8be41a15b17650eb2682ee0a5643b047e56a3a014dd33","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:34.721696Z","signature_b64":"Uw4L9C6EnZUlxKGYPGr0GRPMhyMjIFp5Kd5/iWAvEFjEwVc9JZfUCMTPQPsyCz8xVqkBAJXY9RD8tSuTUuagDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"de4abe1b2ed3019844f8be41a15b17650eb2682ee0a5643b047e56a3a014dd33","last_reissued_at":"2026-05-18T01:43:34.721156Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:34.721156Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.3727","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":"2026-05-18T01:43:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"osq7qSZwrMJkpSLX9brQEcWQICNfUeZuvQib+nW/ljGP3kge7BRmedn2AjIanpHc0fWbEcG62aYuTMMl6fo9AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T21:00:00.600156Z"},"content_sha256":"e5fc4c07858f3bb6a860808deb4f5fb4e958349385688f6f4e22be449713dfbf","schema_version":"1.0","event_id":"sha256:e5fc4c07858f3bb6a860808deb4f5fb4e958349385688f6f4e22be449713dfbf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:3ZFL4GZO2MAZQRHYXZA2CWYXMU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extreme Blazars Studied with Fermi-LAT and Suzaku: 1ES 0347-121 and Blazar Candidate HESS J1943+213","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Bamba, C. C. Cheung, C. D. Dermer, D. J. Thompson, G. Dubus, J. Finke, J. Kataoka, L. Stawarz, M. de Naurois, S. J. Wagner, Y. Fukazawa, Y. T. Tanaka","submitted_at":"2014-04-14T20:00:21Z","abstract_excerpt":"We report on our study of high-energy properties of two peculiar TeV emitters: the \"extreme blazar\" 1ES 0347-121 and the \"extreme blazar candidate\" HESS J1943+213 located near the Galactic Plane. Both objects are characterized by quiescent synchrotron emission with flat spectra extending up to the hard X-ray range, and both were reported to be missing GeV counterparts in the Fermi-LAT 2-year Source Catalog. We analyze a 4.5 year accumulation of the Fermi-LAT data, resulting in the detection of 1ES 0347-121 in the GeV band, as well as in improved upper limits for HESS J1943+213. We also present"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.3727","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":"2026-05-18T01:43:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fe7XisAqHClD4xgK9V65HvIP0gyFSdgvAuVskp3YNpMi3aWNET5ZiIVnPQcq2d+MnUywkTAFnaWx42KehPDnBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T21:00:00.600534Z"},"content_sha256":"cca1514e1571d9753e4e4523a83c21ffd787986f60d0a7cabc64bed8b7253701","schema_version":"1.0","event_id":"sha256:cca1514e1571d9753e4e4523a83c21ffd787986f60d0a7cabc64bed8b7253701"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3ZFL4GZO2MAZQRHYXZA2CWYXMU/bundle.json","state_url":"https://pith.science/pith/3ZFL4GZO2MAZQRHYXZA2CWYXMU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3ZFL4GZO2MAZQRHYXZA2CWYXMU/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":"2026-05-19T21:00:00Z","links":{"resolver":"https://pith.science/pith/3ZFL4GZO2MAZQRHYXZA2CWYXMU","bundle":"https://pith.science/pith/3ZFL4GZO2MAZQRHYXZA2CWYXMU/bundle.json","state":"https://pith.science/pith/3ZFL4GZO2MAZQRHYXZA2CWYXMU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3ZFL4GZO2MAZQRHYXZA2CWYXMU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:3ZFL4GZO2MAZQRHYXZA2CWYXMU","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":"9ab7e07ec76030a7e615b1e3a55e02d08ac2732bae65741c7c8a35b8142cdd8f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-04-14T20:00:21Z","title_canon_sha256":"40dc20f3d5ec412a87dcd3ed30d5cfed058d1e213cb893a4f62f2b2078205f7a"},"schema_version":"1.0","source":{"id":"1404.3727","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.3727","created_at":"2026-05-18T01:43:34Z"},{"alias_kind":"arxiv_version","alias_value":"1404.3727v1","created_at":"2026-05-18T01:43:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.3727","created_at":"2026-05-18T01:43:34Z"},{"alias_kind":"pith_short_12","alias_value":"3ZFL4GZO2MAZ","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"3ZFL4GZO2MAZQRHY","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"3ZFL4GZO","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:cca1514e1571d9753e4e4523a83c21ffd787986f60d0a7cabc64bed8b7253701","target":"graph","created_at":"2026-05-18T01:43:34Z","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"},"paper":{"abstract_excerpt":"We report on our study of high-energy properties of two peculiar TeV emitters: the \"extreme blazar\" 1ES 0347-121 and the \"extreme blazar candidate\" HESS J1943+213 located near the Galactic Plane. Both objects are characterized by quiescent synchrotron emission with flat spectra extending up to the hard X-ray range, and both were reported to be missing GeV counterparts in the Fermi-LAT 2-year Source Catalog. We analyze a 4.5 year accumulation of the Fermi-LAT data, resulting in the detection of 1ES 0347-121 in the GeV band, as well as in improved upper limits for HESS J1943+213. We also present","authors_text":"A. Bamba, C. C. Cheung, C. D. Dermer, D. J. Thompson, G. Dubus, J. Finke, J. Kataoka, L. Stawarz, M. de Naurois, S. J. Wagner, Y. Fukazawa, Y. T. Tanaka","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-04-14T20:00:21Z","title":"Extreme Blazars Studied with Fermi-LAT and Suzaku: 1ES 0347-121 and Blazar Candidate HESS J1943+213"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.3727","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:e5fc4c07858f3bb6a860808deb4f5fb4e958349385688f6f4e22be449713dfbf","target":"record","created_at":"2026-05-18T01:43:34Z","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":"9ab7e07ec76030a7e615b1e3a55e02d08ac2732bae65741c7c8a35b8142cdd8f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-04-14T20:00:21Z","title_canon_sha256":"40dc20f3d5ec412a87dcd3ed30d5cfed058d1e213cb893a4f62f2b2078205f7a"},"schema_version":"1.0","source":{"id":"1404.3727","kind":"arxiv","version":1}},"canonical_sha256":"de4abe1b2ed3019844f8be41a15b17650eb2682ee0a5643b047e56a3a014dd33","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"de4abe1b2ed3019844f8be41a15b17650eb2682ee0a5643b047e56a3a014dd33","first_computed_at":"2026-05-18T01:43:34.721156Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:34.721156Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Uw4L9C6EnZUlxKGYPGr0GRPMhyMjIFp5Kd5/iWAvEFjEwVc9JZfUCMTPQPsyCz8xVqkBAJXY9RD8tSuTUuagDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:34.721696Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.3727","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e5fc4c07858f3bb6a860808deb4f5fb4e958349385688f6f4e22be449713dfbf","sha256:cca1514e1571d9753e4e4523a83c21ffd787986f60d0a7cabc64bed8b7253701"],"state_sha256":"907bf98edb31d7004e74f2a95117b772e90455f29334dcd2db43068d4e6ca10c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X63AKX8oELPgJuWEj3IlQHyIpiq6Otm0jfbCTVF5vfaTb6Q2buokuJcEpiTLTRdRsUTEpyQ32HhQ26ccQ9EpCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T21:00:00.602458Z","bundle_sha256":"df96a2084f4204b0ef51d9bab7306de630a8a5ef9a6cff847b4f53e5f6661bba"}}