{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:GGPOQACG3ZHTTY3XMCARO4NS4L","short_pith_number":"pith:GGPOQACG","canonical_record":{"source":{"id":"1503.03067","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-10T20:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"90e18b043017da82cbd323ec837b6907b80da282a863dcfbaf9f314291d3d927","abstract_canon_sha256":"2e6e2cd253fec0320823d6f2329b7ca306e6fc8d40c8ff0a0bf94dce61271476"},"schema_version":"1.0"},"canonical_sha256":"319ee80046de4f39e37760811771b2e2c847a7c105fb8c89a8568b6ef8c0b171","source":{"kind":"arxiv","id":"1503.03067","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.03067","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"arxiv_version","alias_value":"1503.03067v1","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03067","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"pith_short_12","alias_value":"GGPOQACG3ZHT","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GGPOQACG3ZHTTY3X","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GGPOQACG","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:GGPOQACG3ZHTTY3XMCARO4NS4L","target":"record","payload":{"canonical_record":{"source":{"id":"1503.03067","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-10T20:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"90e18b043017da82cbd323ec837b6907b80da282a863dcfbaf9f314291d3d927","abstract_canon_sha256":"2e6e2cd253fec0320823d6f2329b7ca306e6fc8d40c8ff0a0bf94dce61271476"},"schema_version":"1.0"},"canonical_sha256":"319ee80046de4f39e37760811771b2e2c847a7c105fb8c89a8568b6ef8c0b171","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:25:04.312164Z","signature_b64":"nO0le6Vpw9Zpsrh8GJz445hC+KWku2mjbAB+R0b6odGsWzl/oN4Xxnb2kcyy8HCVerV0S83edLhYZJ+pw3oeDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"319ee80046de4f39e37760811771b2e2c847a7c105fb8c89a8568b6ef8c0b171","last_reissued_at":"2026-05-18T02:25:04.311809Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:25:04.311809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.03067","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":"2026-05-18T02:25:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nd0e4YkNJuWU4OjocYJcRzQtbenjSxLStY3RiiJh4m5WCnN8MJBMYXxkEaYiFY2SADO39IkmxmOIfQUDGWlhAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:39:26.340935Z"},"content_sha256":"39025441df7c36b1b88a025bca5426292ea966281a44e7225d6ea3a6bffd4d51","schema_version":"1.0","event_id":"sha256:39025441df7c36b1b88a025bca5426292ea966281a44e7225d6ea3a6bffd4d51"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:GGPOQACG3ZHTTY3XMCARO4NS4L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unveiling the nature of the unidentified gamma-ray sources VI: gamma-ray blazar candidates in the WISH survey and their radio properties","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Paggi (SAO-Harvard CfA), F. Massaro (Stanford University-SLAC), G. Tosti (University of Perugia), M. Giroletti (INAF-IRA), M. Nori (INAF-IRA), R.D'Abrusco (SAO-Harvard CfA), S. Funk (Stanford-SLAC)","submitted_at":"2015-03-10T20:00:04Z","abstract_excerpt":"According to the second Fermi LAT Catalog (2FGL), about one third of the gamma-ray sources listed have no assigned counterparts at lower energies. Many statistical methods have been developed to find proper counterparts for these sources. We explore the sky area covered at low radio frequency by Westerbork in the Southern Hemisphere (WISH) survey to search for blazar-like associations among the unidentified gamma-ray sources listed in the 2FGL (UGSs). Searching the WISH and NRAO VLA Sky Survey (NVSS) radio surveys within the positional uncertainty regions of the 2FGL UGSs, we select as gamma-r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03067","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":"2026-05-18T02:25:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dMiaYspPg8w9K9csnKS4HcBrTaPKoZFIhbIN3vWhLVukYhU0eHHjBq2swxtANy0Wj5K+yqH1y6R47rhddA8qBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:39:26.341570Z"},"content_sha256":"e1bb197fa5054c1acb2554a9a5854066cc559d7c046322f5cebcaf23d1bf9b87","schema_version":"1.0","event_id":"sha256:e1bb197fa5054c1acb2554a9a5854066cc559d7c046322f5cebcaf23d1bf9b87"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GGPOQACG3ZHTTY3XMCARO4NS4L/bundle.json","state_url":"https://pith.science/pith/GGPOQACG3ZHTTY3XMCARO4NS4L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GGPOQACG3ZHTTY3XMCARO4NS4L/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":"2026-05-25T21:39:26Z","links":{"resolver":"https://pith.science/pith/GGPOQACG3ZHTTY3XMCARO4NS4L","bundle":"https://pith.science/pith/GGPOQACG3ZHTTY3XMCARO4NS4L/bundle.json","state":"https://pith.science/pith/GGPOQACG3ZHTTY3XMCARO4NS4L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GGPOQACG3ZHTTY3XMCARO4NS4L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:GGPOQACG3ZHTTY3XMCARO4NS4L","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":"2e6e2cd253fec0320823d6f2329b7ca306e6fc8d40c8ff0a0bf94dce61271476","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-10T20:00:04Z","title_canon_sha256":"90e18b043017da82cbd323ec837b6907b80da282a863dcfbaf9f314291d3d927"},"schema_version":"1.0","source":{"id":"1503.03067","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.03067","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"arxiv_version","alias_value":"1503.03067v1","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03067","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"pith_short_12","alias_value":"GGPOQACG3ZHT","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GGPOQACG3ZHTTY3X","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GGPOQACG","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:e1bb197fa5054c1acb2554a9a5854066cc559d7c046322f5cebcaf23d1bf9b87","target":"graph","created_at":"2026-05-18T02:25:04Z","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":"According to the second Fermi LAT Catalog (2FGL), about one third of the gamma-ray sources listed have no assigned counterparts at lower energies. Many statistical methods have been developed to find proper counterparts for these sources. We explore the sky area covered at low radio frequency by Westerbork in the Southern Hemisphere (WISH) survey to search for blazar-like associations among the unidentified gamma-ray sources listed in the 2FGL (UGSs). Searching the WISH and NRAO VLA Sky Survey (NVSS) radio surveys within the positional uncertainty regions of the 2FGL UGSs, we select as gamma-r","authors_text":"A. Paggi (SAO-Harvard CfA), F. Massaro (Stanford University-SLAC), G. Tosti (University of Perugia), M. Giroletti (INAF-IRA), M. Nori (INAF-IRA), R.D'Abrusco (SAO-Harvard CfA), S. Funk (Stanford-SLAC)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-10T20:00:04Z","title":"Unveiling the nature of the unidentified gamma-ray sources VI: gamma-ray blazar candidates in the WISH survey and their radio properties"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03067","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":"sha256:39025441df7c36b1b88a025bca5426292ea966281a44e7225d6ea3a6bffd4d51","target":"record","created_at":"2026-05-18T02:25:04Z","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":"2e6e2cd253fec0320823d6f2329b7ca306e6fc8d40c8ff0a0bf94dce61271476","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-10T20:00:04Z","title_canon_sha256":"90e18b043017da82cbd323ec837b6907b80da282a863dcfbaf9f314291d3d927"},"schema_version":"1.0","source":{"id":"1503.03067","kind":"arxiv","version":1}},"canonical_sha256":"319ee80046de4f39e37760811771b2e2c847a7c105fb8c89a8568b6ef8c0b171","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"319ee80046de4f39e37760811771b2e2c847a7c105fb8c89a8568b6ef8c0b171","first_computed_at":"2026-05-18T02:25:04.311809Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:25:04.311809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nO0le6Vpw9Zpsrh8GJz445hC+KWku2mjbAB+R0b6odGsWzl/oN4Xxnb2kcyy8HCVerV0S83edLhYZJ+pw3oeDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:25:04.312164Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.03067","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:39025441df7c36b1b88a025bca5426292ea966281a44e7225d6ea3a6bffd4d51","sha256:e1bb197fa5054c1acb2554a9a5854066cc559d7c046322f5cebcaf23d1bf9b87"],"state_sha256":"96a47f07d03acc96985d8f68b001e52d51bd31d1c6454fd3a6db3f07952fbbea"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4IYQToKdZKhvl13YMESJ/L0H/a6jXb1GQskfRE4zCvGP4SM2WKNGaTCwyPjcsWMFhk37oW1+KZFrknrFeSohBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:39:26.344177Z","bundle_sha256":"88d875dd9eb1e0f9601178460bbf8353820a4208462b9df5e96eca0a231c4f46"}}