{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:QGZFHHX2FWVGZZ55TVBIEFNJ34","short_pith_number":"pith:QGZFHHX2","canonical_record":{"source":{"id":"1301.6550","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-28T14:09:27Z","cross_cats_sorted":[],"title_canon_sha256":"7e198374ef7b5583b506f09df28c1b7ffafa460d15aeb545db564b35fa55abf7","abstract_canon_sha256":"8e06fd98609a90c678276004df9bf3e744c5618b56b2148c061a3baeba1aeb6a"},"schema_version":"1.0"},"canonical_sha256":"81b2539efa2daa6ce7bd9d428215a9df17714cd43132130380c60aec2a2ad45e","source":{"kind":"arxiv","id":"1301.6550","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.6550","created_at":"2026-05-18T01:51:57Z"},{"alias_kind":"arxiv_version","alias_value":"1301.6550v1","created_at":"2026-05-18T01:51:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.6550","created_at":"2026-05-18T01:51:57Z"},{"alias_kind":"pith_short_12","alias_value":"QGZFHHX2FWVG","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"QGZFHHX2FWVGZZ55","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"QGZFHHX2","created_at":"2026-05-18T12:27:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:QGZFHHX2FWVGZZ55TVBIEFNJ34","target":"record","payload":{"canonical_record":{"source":{"id":"1301.6550","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-28T14:09:27Z","cross_cats_sorted":[],"title_canon_sha256":"7e198374ef7b5583b506f09df28c1b7ffafa460d15aeb545db564b35fa55abf7","abstract_canon_sha256":"8e06fd98609a90c678276004df9bf3e744c5618b56b2148c061a3baeba1aeb6a"},"schema_version":"1.0"},"canonical_sha256":"81b2539efa2daa6ce7bd9d428215a9df17714cd43132130380c60aec2a2ad45e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:57.897883Z","signature_b64":"2Wa8EwCWNd44tkRbUvgiBSUyx+oDc7+9PGCLuY19PLI59ksnxVZLLDLWRi7gc0Kvuq9kHsGXtgID2ykoyxG9DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"81b2539efa2daa6ce7bd9d428215a9df17714cd43132130380c60aec2a2ad45e","last_reissued_at":"2026-05-18T01:51:57.897191Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:57.897191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1301.6550","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":"2026-05-18T01:51:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zi+g+/WbJcRafyJSrmi60SoTy48SwGOFVOPnX+dVQsyoJBaG2G6yIL6BZra7bBqfkaOzS03EWbKXo7ZWJjubAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T05:28:19.181950Z"},"content_sha256":"d98b145d2f864fc9ea513c02660ccc458b7039d818e49618042817f58dc66ce4","schema_version":"1.0","event_id":"sha256:d98b145d2f864fc9ea513c02660ccc458b7039d818e49618042817f58dc66ce4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:QGZFHHX2FWVGZZ55TVBIEFNJ34","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The CLASS BL Lac sample: The Radio Luminosity Function","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Caccianiga, M.J.M. Marcha","submitted_at":"2013-01-28T14:09:27Z","abstract_excerpt":"This paper presents a new sample of BL Lac objects selected from a deep (30 mJy) radio survey of flat spectrum radio sources (the CLASS blazar survey, henceforth CBS). The sample is one of the largest well defined samples in the low power regime with a total of 130 sources of which 55 satisfy the 'classical' optical BL Lac selection criteria, and the rest have indistinguishable radio properties. The primary goal of this study is to establish the Radio Luminosity Function (RLF) on firm statistical ground at low radio luminosities where previous samples have not been able to investigate. The gai"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.6550","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":"2026-05-18T01:51:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2PlSJi/jIPYPucDdBVBiGavUZ4B9jxpQDfxaWy9kxBVo514+KCJDY1v3Kzshci2arhl2BbKnOxlilxd4TCYTAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T05:28:19.182628Z"},"content_sha256":"4d904bf0657d7991080bb553bce4e9dd1b1bc4e7985d59765fee832f7fb93990","schema_version":"1.0","event_id":"sha256:4d904bf0657d7991080bb553bce4e9dd1b1bc4e7985d59765fee832f7fb93990"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QGZFHHX2FWVGZZ55TVBIEFNJ34/bundle.json","state_url":"https://pith.science/pith/QGZFHHX2FWVGZZ55TVBIEFNJ34/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QGZFHHX2FWVGZZ55TVBIEFNJ34/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":"2026-06-10T05:28:19Z","links":{"resolver":"https://pith.science/pith/QGZFHHX2FWVGZZ55TVBIEFNJ34","bundle":"https://pith.science/pith/QGZFHHX2FWVGZZ55TVBIEFNJ34/bundle.json","state":"https://pith.science/pith/QGZFHHX2FWVGZZ55TVBIEFNJ34/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QGZFHHX2FWVGZZ55TVBIEFNJ34/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:QGZFHHX2FWVGZZ55TVBIEFNJ34","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":"8e06fd98609a90c678276004df9bf3e744c5618b56b2148c061a3baeba1aeb6a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-28T14:09:27Z","title_canon_sha256":"7e198374ef7b5583b506f09df28c1b7ffafa460d15aeb545db564b35fa55abf7"},"schema_version":"1.0","source":{"id":"1301.6550","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.6550","created_at":"2026-05-18T01:51:57Z"},{"alias_kind":"arxiv_version","alias_value":"1301.6550v1","created_at":"2026-05-18T01:51:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.6550","created_at":"2026-05-18T01:51:57Z"},{"alias_kind":"pith_short_12","alias_value":"QGZFHHX2FWVG","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"QGZFHHX2FWVGZZ55","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"QGZFHHX2","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:4d904bf0657d7991080bb553bce4e9dd1b1bc4e7985d59765fee832f7fb93990","target":"graph","created_at":"2026-05-18T01:51:57Z","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":"This paper presents a new sample of BL Lac objects selected from a deep (30 mJy) radio survey of flat spectrum radio sources (the CLASS blazar survey, henceforth CBS). The sample is one of the largest well defined samples in the low power regime with a total of 130 sources of which 55 satisfy the 'classical' optical BL Lac selection criteria, and the rest have indistinguishable radio properties. The primary goal of this study is to establish the Radio Luminosity Function (RLF) on firm statistical ground at low radio luminosities where previous samples have not been able to investigate. The gai","authors_text":"A. Caccianiga, M.J.M. Marcha","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-28T14:09:27Z","title":"The CLASS BL Lac sample: The Radio Luminosity Function"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.6550","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:d98b145d2f864fc9ea513c02660ccc458b7039d818e49618042817f58dc66ce4","target":"record","created_at":"2026-05-18T01:51:57Z","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":"8e06fd98609a90c678276004df9bf3e744c5618b56b2148c061a3baeba1aeb6a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-01-28T14:09:27Z","title_canon_sha256":"7e198374ef7b5583b506f09df28c1b7ffafa460d15aeb545db564b35fa55abf7"},"schema_version":"1.0","source":{"id":"1301.6550","kind":"arxiv","version":1}},"canonical_sha256":"81b2539efa2daa6ce7bd9d428215a9df17714cd43132130380c60aec2a2ad45e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"81b2539efa2daa6ce7bd9d428215a9df17714cd43132130380c60aec2a2ad45e","first_computed_at":"2026-05-18T01:51:57.897191Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:57.897191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2Wa8EwCWNd44tkRbUvgiBSUyx+oDc7+9PGCLuY19PLI59ksnxVZLLDLWRi7gc0Kvuq9kHsGXtgID2ykoyxG9DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:57.897883Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.6550","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d98b145d2f864fc9ea513c02660ccc458b7039d818e49618042817f58dc66ce4","sha256:4d904bf0657d7991080bb553bce4e9dd1b1bc4e7985d59765fee832f7fb93990"],"state_sha256":"6b2af85471acc13101006be58219b070723a1927a56c7ae3562b1efe12df18d6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"43yw7Kof55oGDHZaURhU38nR+1S9jpfJPgCsbvlORZS4CwjabQng+3mC7P31wB8/dMFOQkDrYLn7Pa7IxfbJAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T05:28:19.186893Z","bundle_sha256":"699e81926ca75bf50f1ad937fa634493516bcd90e8b159d39c24e30ea02b4747"}}