{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:L7RTAA7B7DQYIGE2MTZ6PD3JRR","short_pith_number":"pith:L7RTAA7B","canonical_record":{"source":{"id":"astro-ph/9904210","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-04-16T08:28:16Z","cross_cats_sorted":[],"title_canon_sha256":"51dde6e810571f3e673dd971d5ec22c167d1c8062a2c97be38cd432bfeae005c","abstract_canon_sha256":"f53ab5c1fca71712f041fa97cdc60bfa5dcb436e4dd57a4429a4d2f1ad3dcdf5"},"schema_version":"1.0"},"canonical_sha256":"5fe33003e1f8e184189a64f3e78f698c66b11865d08bc2309a6551ee3151a3f7","source":{"kind":"arxiv","id":"astro-ph/9904210","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9904210","created_at":"2026-07-04T16:10:53Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9904210v1","created_at":"2026-07-04T16:10:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9904210","created_at":"2026-07-04T16:10:53Z"},{"alias_kind":"pith_short_12","alias_value":"L7RTAA7B7DQY","created_at":"2026-07-04T16:10:53Z"},{"alias_kind":"pith_short_16","alias_value":"L7RTAA7B7DQYIGE2","created_at":"2026-07-04T16:10:53Z"},{"alias_kind":"pith_short_8","alias_value":"L7RTAA7B","created_at":"2026-07-04T16:10:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:L7RTAA7B7DQYIGE2MTZ6PD3JRR","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9904210","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-04-16T08:28:16Z","cross_cats_sorted":[],"title_canon_sha256":"51dde6e810571f3e673dd971d5ec22c167d1c8062a2c97be38cd432bfeae005c","abstract_canon_sha256":"f53ab5c1fca71712f041fa97cdc60bfa5dcb436e4dd57a4429a4d2f1ad3dcdf5"},"schema_version":"1.0"},"canonical_sha256":"5fe33003e1f8e184189a64f3e78f698c66b11865d08bc2309a6551ee3151a3f7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:10:53.901751Z","signature_b64":"L8WoZqJ3pSLhut1RD3tH4qitgIqE4qa2OuF5SpMEp4Wp46oIDDb/p5hwjeU5HwRvHwE5UTTyVZqmYyj1o2bxCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5fe33003e1f8e184189a64f3e78f698c66b11865d08bc2309a6551ee3151a3f7","last_reissued_at":"2026-07-04T16:10:53.897567Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:10:53.897567Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9904210","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":"2026-07-04T16:10:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r7mpKobNxdupmZWWcKPTdF2G1rIRJ36Tms8uesH7N+P+fQanOweotyBm8P1fKh2z/0XMKeV52GC4Le5qYp7DCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T07:50:10.516562Z"},"content_sha256":"93f35abc14b575837d965c0eeb6742b00eb0cfa96ac1305b36fec962aab8bc32","schema_version":"1.0","event_id":"sha256:93f35abc14b575837d965c0eeb6742b00eb0cfa96ac1305b36fec962aab8bc32"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:L7RTAA7B7DQYIGE2MTZ6PD3JRR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radio Halo and Relic Candidates from the NRAO VLA Sky Survey","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"G. Giovannini, L. Feretti, M. Tordi","submitted_at":"1999-04-16T08:28:16Z","abstract_excerpt":"We present the first results of the search of new halo and relic candidates in the NRAO VLA Sky Survey. We have inspected a sample of 205 clusters from the X-ray-brightest Abell-type clusters presented by Ebeling et al (1996), and found 29 candidates. Out of them, 11 clusters are already known from the literature to contain a diffuse cluster-wide source, while in 18 clusters this is the first indication of the existence of this type of sources. We classify these sources as halos or relics according to their location in the cluster center or periphery, respectively. We find that the occurrence "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9904210","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/astro-ph/9904210/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":"2026-07-04T16:10:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AzHpBF8y1z8YO15DzITLkmE/L+yGSSzKOBf0gu0qm4Jp/3kS1bGtk5KAQancEFNEGvkOxuyN0n2r79jjSWiKDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T07:50:10.517192Z"},"content_sha256":"c3bc5f4dfa84c2b3fd1984484fd4c3d8aba34ba264e905082d7647fd601bedb2","schema_version":"1.0","event_id":"sha256:c3bc5f4dfa84c2b3fd1984484fd4c3d8aba34ba264e905082d7647fd601bedb2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/L7RTAA7B7DQYIGE2MTZ6PD3JRR/bundle.json","state_url":"https://pith.science/pith/L7RTAA7B7DQYIGE2MTZ6PD3JRR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/L7RTAA7B7DQYIGE2MTZ6PD3JRR/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":"2026-08-06T07:50:10Z","links":{"resolver":"https://pith.science/pith/L7RTAA7B7DQYIGE2MTZ6PD3JRR","bundle":"https://pith.science/pith/L7RTAA7B7DQYIGE2MTZ6PD3JRR/bundle.json","state":"https://pith.science/pith/L7RTAA7B7DQYIGE2MTZ6PD3JRR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/L7RTAA7B7DQYIGE2MTZ6PD3JRR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:L7RTAA7B7DQYIGE2MTZ6PD3JRR","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":"f53ab5c1fca71712f041fa97cdc60bfa5dcb436e4dd57a4429a4d2f1ad3dcdf5","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-04-16T08:28:16Z","title_canon_sha256":"51dde6e810571f3e673dd971d5ec22c167d1c8062a2c97be38cd432bfeae005c"},"schema_version":"1.0","source":{"id":"astro-ph/9904210","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9904210","created_at":"2026-07-04T16:10:53Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9904210v1","created_at":"2026-07-04T16:10:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9904210","created_at":"2026-07-04T16:10:53Z"},{"alias_kind":"pith_short_12","alias_value":"L7RTAA7B7DQY","created_at":"2026-07-04T16:10:53Z"},{"alias_kind":"pith_short_16","alias_value":"L7RTAA7B7DQYIGE2","created_at":"2026-07-04T16:10:53Z"},{"alias_kind":"pith_short_8","alias_value":"L7RTAA7B","created_at":"2026-07-04T16:10:53Z"}],"graph_snapshots":[{"event_id":"sha256:c3bc5f4dfa84c2b3fd1984484fd4c3d8aba34ba264e905082d7647fd601bedb2","target":"graph","created_at":"2026-07-04T16:10:53Z","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/astro-ph/9904210/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the first results of the search of new halo and relic candidates in the NRAO VLA Sky Survey. We have inspected a sample of 205 clusters from the X-ray-brightest Abell-type clusters presented by Ebeling et al (1996), and found 29 candidates. Out of them, 11 clusters are already known from the literature to contain a diffuse cluster-wide source, while in 18 clusters this is the first indication of the existence of this type of sources. We classify these sources as halos or relics according to their location in the cluster center or periphery, respectively. We find that the occurrence ","authors_text":"G. Giovannini, L. Feretti, M. Tordi","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1999-04-16T08:28:16Z","title":"Radio Halo and Relic Candidates from the NRAO VLA Sky Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9904210","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":"sha256:93f35abc14b575837d965c0eeb6742b00eb0cfa96ac1305b36fec962aab8bc32","target":"record","created_at":"2026-07-04T16:10:53Z","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":"f53ab5c1fca71712f041fa97cdc60bfa5dcb436e4dd57a4429a4d2f1ad3dcdf5","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-04-16T08:28:16Z","title_canon_sha256":"51dde6e810571f3e673dd971d5ec22c167d1c8062a2c97be38cd432bfeae005c"},"schema_version":"1.0","source":{"id":"astro-ph/9904210","kind":"arxiv","version":1}},"canonical_sha256":"5fe33003e1f8e184189a64f3e78f698c66b11865d08bc2309a6551ee3151a3f7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5fe33003e1f8e184189a64f3e78f698c66b11865d08bc2309a6551ee3151a3f7","first_computed_at":"2026-07-04T16:10:53.897567Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:10:53.897567Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L8WoZqJ3pSLhut1RD3tH4qitgIqE4qa2OuF5SpMEp4Wp46oIDDb/p5hwjeU5HwRvHwE5UTTyVZqmYyj1o2bxCg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:10:53.901751Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9904210","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:93f35abc14b575837d965c0eeb6742b00eb0cfa96ac1305b36fec962aab8bc32","sha256:c3bc5f4dfa84c2b3fd1984484fd4c3d8aba34ba264e905082d7647fd601bedb2"],"state_sha256":"454116428accfe2a1b7d96ec981cad2b877a2cbf1eace127ab82b1a606bc0351"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+Y/gTX8zVWl1uFlZSsqDVZ8JJJpz7bx6V8ZsHoUXThi1VTImlHOJkVx5nkejyYQK0g4qbiUT5kCjUCz7X2nRDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T07:50:10.528490Z","bundle_sha256":"545db9df0438b2e7b4855a1bd8b2ffb245fd548eb84b8fd984cfc71bcdc7c5b5"}}