{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:3M3VG63DWHQKGW2SYVEWKCGIC3","short_pith_number":"pith:3M3VG63D","canonical_record":{"source":{"id":"0706.2323","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-15T18:13:23Z","cross_cats_sorted":[],"title_canon_sha256":"f28894413938fc02e14e28a4c79c05c8bf8bb972538a5327d1ef48e29dcea486","abstract_canon_sha256":"6c6d2bb33fdf508184bad99ca8eec4b138834fa44ee6092cc0e9a50541bde5ac"},"schema_version":"1.0"},"canonical_sha256":"db37537b63b1e0a35b52c5496508c816dd191fd2c924f1e290b00e865f5bf8a5","source":{"kind":"arxiv","id":"0706.2323","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.2323","created_at":"2026-07-04T17:04:13Z"},{"alias_kind":"arxiv_version","alias_value":"0706.2323v1","created_at":"2026-07-04T17:04:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.2323","created_at":"2026-07-04T17:04:13Z"},{"alias_kind":"pith_short_12","alias_value":"3M3VG63DWHQK","created_at":"2026-07-04T17:04:13Z"},{"alias_kind":"pith_short_16","alias_value":"3M3VG63DWHQKGW2S","created_at":"2026-07-04T17:04:13Z"},{"alias_kind":"pith_short_8","alias_value":"3M3VG63D","created_at":"2026-07-04T17:04:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:3M3VG63DWHQKGW2SYVEWKCGIC3","target":"record","payload":{"canonical_record":{"source":{"id":"0706.2323","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-15T18:13:23Z","cross_cats_sorted":[],"title_canon_sha256":"f28894413938fc02e14e28a4c79c05c8bf8bb972538a5327d1ef48e29dcea486","abstract_canon_sha256":"6c6d2bb33fdf508184bad99ca8eec4b138834fa44ee6092cc0e9a50541bde5ac"},"schema_version":"1.0"},"canonical_sha256":"db37537b63b1e0a35b52c5496508c816dd191fd2c924f1e290b00e865f5bf8a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:04:13.645699Z","signature_b64":"WZaL27o1Uev5z/DFNHezylt0Nj6hcacYCwKyRL3hHR+3iUFfreWo/lbT5oja6Q0J8sykRf2qB1b/QkaZJM4zBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"db37537b63b1e0a35b52c5496508c816dd191fd2c924f1e290b00e865f5bf8a5","last_reissued_at":"2026-07-04T17:04:13.645298Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:04:13.645298Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0706.2323","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":"2026-07-04T17:04:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ez0QufOtuYTj8W4PzyIEJ+7JIeF4iiOD2TMseVLQX+9Z8XjwlD2CIIiV/6zzrvcU9DcLn+ZqLHiCkuVCFw2cCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T15:25:46.326459Z"},"content_sha256":"f8f02a94a618b4cb67a0561c57e5cad0a1b90ba4c1cd725eeaed9c7c9465d65e","schema_version":"1.0","event_id":"sha256:f8f02a94a618b4cb67a0561c57e5cad0a1b90ba4c1cd725eeaed9c7c9465d65e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:3M3VG63DWHQKGW2SYVEWKCGIC3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A sample of mJy radio sources at 1.4 GHz in the Lynx and Hercules fields - I. Radio imaging, multicolour photometry and spectroscopy","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"E. E. Rigby, I. A. Snellen, P. N. Best","submitted_at":"2007-06-15T18:13:23Z","abstract_excerpt":"With the goal of identifying high redshift radio galaxies with FRI classification, here are presented high resolution, wide-field radio observations, near infra-red and optical imaging and multi-object spectroscopy of two fields of the Leiden-Berkeley Deep Survey. These fields, Hercules.1 and Lynx.2, contain a complete sample of 81 radio sources with S(1.4 GHz) > 0.5 mJy within 0.6 square degrees. This sample will form the basis for a study of the population and cosmic evolution of high redshift, low power, FRI radio sources which will be presented in Paper II. Currently, the host galaxy ident"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.2323","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0706.2323/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":"2026-07-04T17:04:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CUdx+ph9j85PRZGo7lbz3IW7tBDHZAD2BvQ1elOr6BXhiXdg/72AzH/vG/yvv+Q1WK7rNFtS7XgnN/VCuiUgCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T15:25:46.326840Z"},"content_sha256":"0291c4d4ce29b00cb06b02cd39b3686b898fe084c3b76b3cff5a8d0665c9deeb","schema_version":"1.0","event_id":"sha256:0291c4d4ce29b00cb06b02cd39b3686b898fe084c3b76b3cff5a8d0665c9deeb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3M3VG63DWHQKGW2SYVEWKCGIC3/bundle.json","state_url":"https://pith.science/pith/3M3VG63DWHQKGW2SYVEWKCGIC3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3M3VG63DWHQKGW2SYVEWKCGIC3/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":"2026-07-17T15:25:46Z","links":{"resolver":"https://pith.science/pith/3M3VG63DWHQKGW2SYVEWKCGIC3","bundle":"https://pith.science/pith/3M3VG63DWHQKGW2SYVEWKCGIC3/bundle.json","state":"https://pith.science/pith/3M3VG63DWHQKGW2SYVEWKCGIC3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3M3VG63DWHQKGW2SYVEWKCGIC3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:3M3VG63DWHQKGW2SYVEWKCGIC3","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":"6c6d2bb33fdf508184bad99ca8eec4b138834fa44ee6092cc0e9a50541bde5ac","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-15T18:13:23Z","title_canon_sha256":"f28894413938fc02e14e28a4c79c05c8bf8bb972538a5327d1ef48e29dcea486"},"schema_version":"1.0","source":{"id":"0706.2323","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.2323","created_at":"2026-07-04T17:04:13Z"},{"alias_kind":"arxiv_version","alias_value":"0706.2323v1","created_at":"2026-07-04T17:04:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.2323","created_at":"2026-07-04T17:04:13Z"},{"alias_kind":"pith_short_12","alias_value":"3M3VG63DWHQK","created_at":"2026-07-04T17:04:13Z"},{"alias_kind":"pith_short_16","alias_value":"3M3VG63DWHQKGW2S","created_at":"2026-07-04T17:04:13Z"},{"alias_kind":"pith_short_8","alias_value":"3M3VG63D","created_at":"2026-07-04T17:04:13Z"}],"graph_snapshots":[{"event_id":"sha256:0291c4d4ce29b00cb06b02cd39b3686b898fe084c3b76b3cff5a8d0665c9deeb","target":"graph","created_at":"2026-07-04T17:04:13Z","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/0706.2323/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"With the goal of identifying high redshift radio galaxies with FRI classification, here are presented high resolution, wide-field radio observations, near infra-red and optical imaging and multi-object spectroscopy of two fields of the Leiden-Berkeley Deep Survey. These fields, Hercules.1 and Lynx.2, contain a complete sample of 81 radio sources with S(1.4 GHz) > 0.5 mJy within 0.6 square degrees. This sample will form the basis for a study of the population and cosmic evolution of high redshift, low power, FRI radio sources which will be presented in Paper II. Currently, the host galaxy ident","authors_text":"E. E. Rigby, I. A. Snellen, P. N. Best","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-06-15T18:13:23Z","title":"A sample of mJy radio sources at 1.4 GHz in the Lynx and Hercules fields - I. Radio imaging, multicolour photometry and spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.2323","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:f8f02a94a618b4cb67a0561c57e5cad0a1b90ba4c1cd725eeaed9c7c9465d65e","target":"record","created_at":"2026-07-04T17:04:13Z","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":"6c6d2bb33fdf508184bad99ca8eec4b138834fa44ee6092cc0e9a50541bde5ac","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-06-15T18:13:23Z","title_canon_sha256":"f28894413938fc02e14e28a4c79c05c8bf8bb972538a5327d1ef48e29dcea486"},"schema_version":"1.0","source":{"id":"0706.2323","kind":"arxiv","version":1}},"canonical_sha256":"db37537b63b1e0a35b52c5496508c816dd191fd2c924f1e290b00e865f5bf8a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"db37537b63b1e0a35b52c5496508c816dd191fd2c924f1e290b00e865f5bf8a5","first_computed_at":"2026-07-04T17:04:13.645298Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:04:13.645298Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WZaL27o1Uev5z/DFNHezylt0Nj6hcacYCwKyRL3hHR+3iUFfreWo/lbT5oja6Q0J8sykRf2qB1b/QkaZJM4zBA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:04:13.645699Z","signed_message":"canonical_sha256_bytes"},"source_id":"0706.2323","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8f02a94a618b4cb67a0561c57e5cad0a1b90ba4c1cd725eeaed9c7c9465d65e","sha256:0291c4d4ce29b00cb06b02cd39b3686b898fe084c3b76b3cff5a8d0665c9deeb"],"state_sha256":"b948bd6bd575a4d5db91106dfdea7e3470c5fef33be372ebffacc75a666ecbf8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q+4vhINanHt+MiD+uNbLeNfcZ6eei1HVenU5ISX5eczUD18060Pe8h4Si/8giODvIcIP92FOMZqsLIxYAAHXCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-17T15:25:46.329033Z","bundle_sha256":"e974dde32d100287de0852b4b534980798d50dd1339159fe76759f4d8d2eb218"}}