{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:IA3MCWHPJKZ5F6G5HDDTQKSQMD","short_pith_number":"pith:IA3MCWHP","canonical_record":{"source":{"id":"1710.01274","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-10-03T16:56:11Z","cross_cats_sorted":[],"title_canon_sha256":"6d49b4a8f08627b245015ff88295f457b694745b5f0cd21e81d0c25c7b9eb2b6","abstract_canon_sha256":"26fb9f0ea5d01c58108212d0702e93959d551bd723f3ea87eaaa987277316287"},"schema_version":"1.0"},"canonical_sha256":"4036c158ef4ab3d2f8dd38c7382a5060da84be91fe3db73e5f53ad38cca8cc63","source":{"kind":"arxiv","id":"1710.01274","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.01274","created_at":"2026-05-18T00:33:44Z"},{"alias_kind":"arxiv_version","alias_value":"1710.01274v1","created_at":"2026-05-18T00:33:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.01274","created_at":"2026-05-18T00:33:44Z"},{"alias_kind":"pith_short_12","alias_value":"IA3MCWHPJKZ5","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"IA3MCWHPJKZ5F6G5","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"IA3MCWHP","created_at":"2026-05-18T12:31:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:IA3MCWHPJKZ5F6G5HDDTQKSQMD","target":"record","payload":{"canonical_record":{"source":{"id":"1710.01274","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-10-03T16:56:11Z","cross_cats_sorted":[],"title_canon_sha256":"6d49b4a8f08627b245015ff88295f457b694745b5f0cd21e81d0c25c7b9eb2b6","abstract_canon_sha256":"26fb9f0ea5d01c58108212d0702e93959d551bd723f3ea87eaaa987277316287"},"schema_version":"1.0"},"canonical_sha256":"4036c158ef4ab3d2f8dd38c7382a5060da84be91fe3db73e5f53ad38cca8cc63","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:33:44.783555Z","signature_b64":"5fK63VE3+3tws+j4uaX4INYWYSiFMRfTE243i0Hizpu0XkY9PIHqdLmk/Q/EqvfmIiUy9BzRJK8OzlnY/+vtDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4036c158ef4ab3d2f8dd38c7382a5060da84be91fe3db73e5f53ad38cca8cc63","last_reissued_at":"2026-05-18T00:33:44.783020Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:33:44.783020Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.01274","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":"2026-05-18T00:33:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"62ySOPVuiiEO75KpswFWTarntwN9igBH+LRoCWds/PlLOin8Gqtu4q2aELJTWTNCsE1GWsRrIFYB0ldkWMqkBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:48:41.528919Z"},"content_sha256":"042c85912154acf8f97dc50b5057545d9ce84dcdfab2e373d6cb5d0891d93d76","schema_version":"1.0","event_id":"sha256:042c85912154acf8f97dc50b5057545d9ce84dcdfab2e373d6cb5d0891d93d76"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:IA3MCWHPJKZ5F6G5HDDTQKSQMD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multi-frequency databases for AGN investigation - Results and perspectives","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Enrico Congiu, Giovanni La Mura, Marco Berton, Michele Frezzato, Piero Rafanelli, Sina Chen, Stefano Ciroi, Valentina Cracco","submitted_at":"2017-10-03T16:56:11Z","abstract_excerpt":"Active Galactic Nuclei (AGNs) are characterized by emission of radiation over more than 10 orders of magnitude in frequency. Therefore, the execution of extensive surveys of the sky, with different types of detectors, is providing the attractive possibility to identify and to investigate the properties of AGNs on very large statistical samples. Thanks to the large spectroscopic surveys that allow detailed investigation of many of these sources, we have the opportunity to place new constraints on the nature and evolution of AGNs and to investigate their relations with the host systems. In this "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.01274","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":"2026-05-18T00:33:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1DVAbBjMx0uJcDWIqcfQ+7STJNG2os+h1T1GsbIOS7pxPb5GDe6M6X9KKt5xgtoOyFiqcSYj5Uqk4L2dFaZaBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:48:41.529254Z"},"content_sha256":"da3316305bcb516c1468aff629f5559d6588202b56095d0cdb5bf54aa8980ecc","schema_version":"1.0","event_id":"sha256:da3316305bcb516c1468aff629f5559d6588202b56095d0cdb5bf54aa8980ecc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IA3MCWHPJKZ5F6G5HDDTQKSQMD/bundle.json","state_url":"https://pith.science/pith/IA3MCWHPJKZ5F6G5HDDTQKSQMD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IA3MCWHPJKZ5F6G5HDDTQKSQMD/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":"2026-05-30T22:48:41Z","links":{"resolver":"https://pith.science/pith/IA3MCWHPJKZ5F6G5HDDTQKSQMD","bundle":"https://pith.science/pith/IA3MCWHPJKZ5F6G5HDDTQKSQMD/bundle.json","state":"https://pith.science/pith/IA3MCWHPJKZ5F6G5HDDTQKSQMD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IA3MCWHPJKZ5F6G5HDDTQKSQMD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:IA3MCWHPJKZ5F6G5HDDTQKSQMD","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":"26fb9f0ea5d01c58108212d0702e93959d551bd723f3ea87eaaa987277316287","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-10-03T16:56:11Z","title_canon_sha256":"6d49b4a8f08627b245015ff88295f457b694745b5f0cd21e81d0c25c7b9eb2b6"},"schema_version":"1.0","source":{"id":"1710.01274","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.01274","created_at":"2026-05-18T00:33:44Z"},{"alias_kind":"arxiv_version","alias_value":"1710.01274v1","created_at":"2026-05-18T00:33:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.01274","created_at":"2026-05-18T00:33:44Z"},{"alias_kind":"pith_short_12","alias_value":"IA3MCWHPJKZ5","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"IA3MCWHPJKZ5F6G5","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"IA3MCWHP","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:da3316305bcb516c1468aff629f5559d6588202b56095d0cdb5bf54aa8980ecc","target":"graph","created_at":"2026-05-18T00:33:44Z","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":"Active Galactic Nuclei (AGNs) are characterized by emission of radiation over more than 10 orders of magnitude in frequency. Therefore, the execution of extensive surveys of the sky, with different types of detectors, is providing the attractive possibility to identify and to investigate the properties of AGNs on very large statistical samples. Thanks to the large spectroscopic surveys that allow detailed investigation of many of these sources, we have the opportunity to place new constraints on the nature and evolution of AGNs and to investigate their relations with the host systems. In this ","authors_text":"Enrico Congiu, Giovanni La Mura, Marco Berton, Michele Frezzato, Piero Rafanelli, Sina Chen, Stefano Ciroi, Valentina Cracco","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-10-03T16:56:11Z","title":"Multi-frequency databases for AGN investigation - Results and perspectives"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.01274","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":"sha256:042c85912154acf8f97dc50b5057545d9ce84dcdfab2e373d6cb5d0891d93d76","target":"record","created_at":"2026-05-18T00:33:44Z","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":"26fb9f0ea5d01c58108212d0702e93959d551bd723f3ea87eaaa987277316287","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-10-03T16:56:11Z","title_canon_sha256":"6d49b4a8f08627b245015ff88295f457b694745b5f0cd21e81d0c25c7b9eb2b6"},"schema_version":"1.0","source":{"id":"1710.01274","kind":"arxiv","version":1}},"canonical_sha256":"4036c158ef4ab3d2f8dd38c7382a5060da84be91fe3db73e5f53ad38cca8cc63","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4036c158ef4ab3d2f8dd38c7382a5060da84be91fe3db73e5f53ad38cca8cc63","first_computed_at":"2026-05-18T00:33:44.783020Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:33:44.783020Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5fK63VE3+3tws+j4uaX4INYWYSiFMRfTE243i0Hizpu0XkY9PIHqdLmk/Q/EqvfmIiUy9BzRJK8OzlnY/+vtDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:33:44.783555Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.01274","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:042c85912154acf8f97dc50b5057545d9ce84dcdfab2e373d6cb5d0891d93d76","sha256:da3316305bcb516c1468aff629f5559d6588202b56095d0cdb5bf54aa8980ecc"],"state_sha256":"044185e4c40a4f3c2eb42c17f8e929d103d8ab1d73380487d8d0db5686d9ac36"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xd2kFih63dYvBYo2XWpssPstgLbWKu9si6koranN4JTfWwAoS8KavnHnZOsPmxKvY6PAGSthULfkKDT/K4AkDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T22:48:41.531119Z","bundle_sha256":"11be188398901acce0f7db5e8753900e606ce09f9528826752c0b197bdb6b7fb"}}