{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:G57OWNQDFESW7FZOHBXP5DCYIG","short_pith_number":"pith:G57OWNQD","canonical_record":{"source":{"id":"1709.00015","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-31T18:00:23Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"4f4934b4b65f5a80951853ee2d01304111d4d38309e517221abe6cb54b93558a","abstract_canon_sha256":"be2cf2bfc2fe088b5ee162b489cfa144e4e8f8025ad9951538004adbc0ebb994"},"schema_version":"1.0"},"canonical_sha256":"377eeb360329256f972e386efe8c5841b3f32baa081c0486a5c245ec6e7dd75d","source":{"kind":"arxiv","id":"1709.00015","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.00015","created_at":"2026-05-18T00:27:12Z"},{"alias_kind":"arxiv_version","alias_value":"1709.00015v1","created_at":"2026-05-18T00:27:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.00015","created_at":"2026-05-18T00:27:12Z"},{"alias_kind":"pith_short_12","alias_value":"G57OWNQDFESW","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"G57OWNQDFESW7FZO","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"G57OWNQD","created_at":"2026-05-18T12:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:G57OWNQDFESW7FZOHBXP5DCYIG","target":"record","payload":{"canonical_record":{"source":{"id":"1709.00015","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-31T18:00:23Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"4f4934b4b65f5a80951853ee2d01304111d4d38309e517221abe6cb54b93558a","abstract_canon_sha256":"be2cf2bfc2fe088b5ee162b489cfa144e4e8f8025ad9951538004adbc0ebb994"},"schema_version":"1.0"},"canonical_sha256":"377eeb360329256f972e386efe8c5841b3f32baa081c0486a5c245ec6e7dd75d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:12.992650Z","signature_b64":"yH/ViQpAu1D7DrnmyZt0f9sGOn7rpUPzmy0xrEa7bliV7mSD57MbnbKfstwWY+fhYG4kmM78Lc/sDaYp1ZuxAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"377eeb360329256f972e386efe8c5841b3f32baa081c0486a5c245ec6e7dd75d","last_reissued_at":"2026-05-18T00:27:12.992003Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:12.992003Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.00015","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":"2026-05-18T00:27:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a3/ZK3OOxSng6vw/tNV7jvsblFlhC3W/+prek9r3oApcFcDVm7Fin7cNnrJYj7RgpGMiPqhYl1Z+Co4IKgcJBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T17:53:34.421523Z"},"content_sha256":"67b002fa759a7c8e02dcdd1aca6205150c4770ba179330b1ad3034f75b9cd320","schema_version":"1.0","event_id":"sha256:67b002fa759a7c8e02dcdd1aca6205150c4770ba179330b1ad3034f75b9cd320"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:G57OWNQDFESW7FZOHBXP5DCYIG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"FR0CAT: a FIRST catalog of FR0 radio galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"(2) INAF-Osservatorio Astronomico di Torino, (3) University of Torino, A. Capetti (2), F. Massaro (3) ((1) University of Southampton, Italy, Italy), R.D. Baldi (1), UK","submitted_at":"2017-08-31T18:00:23Z","abstract_excerpt":"With the aim of exploring the properties of the class of FR0 radio galaxies, we selected a sample of 108 compact radio sources, called FR0CAT, by combining observations from the NVSS, FIRST, and SDSS surveys. The catalog includes sources with z$\\leq 0.05$, with a radio size $\\lesssim$ 5 kpc, and with an optical spectrum characteristic of low-excitation galaxies. Their 1.4-GHz radio luminosities range $10^{38} \\lesssim \\nu L_{1.4} \\lesssim 10^{40}$ erg/s. The FR0CAT hosts are mostly (86%) luminous ($-21 \\gtrsim M_r \\gtrsim -23$) red early-type galaxies with black hole masses $10^8 \\lesssim M_{\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.00015","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":"2026-05-18T00:27:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T4wd3SmKc7O4iX/gcvR1cRgzdC7of0esoKKz2Vr1iwRxGLPfdi6jhfWKtqS+Z8rHDn4skVZtN+ow3Cr3fwdoAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T17:53:34.422113Z"},"content_sha256":"8018bd919308a502ce40a5378da5a9ff5888c164fb08b3ce2e79c23d2c4f9c97","schema_version":"1.0","event_id":"sha256:8018bd919308a502ce40a5378da5a9ff5888c164fb08b3ce2e79c23d2c4f9c97"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G57OWNQDFESW7FZOHBXP5DCYIG/bundle.json","state_url":"https://pith.science/pith/G57OWNQDFESW7FZOHBXP5DCYIG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G57OWNQDFESW7FZOHBXP5DCYIG/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":"2026-05-21T17:53:34Z","links":{"resolver":"https://pith.science/pith/G57OWNQDFESW7FZOHBXP5DCYIG","bundle":"https://pith.science/pith/G57OWNQDFESW7FZOHBXP5DCYIG/bundle.json","state":"https://pith.science/pith/G57OWNQDFESW7FZOHBXP5DCYIG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G57OWNQDFESW7FZOHBXP5DCYIG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:G57OWNQDFESW7FZOHBXP5DCYIG","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":"be2cf2bfc2fe088b5ee162b489cfa144e4e8f8025ad9951538004adbc0ebb994","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-31T18:00:23Z","title_canon_sha256":"4f4934b4b65f5a80951853ee2d01304111d4d38309e517221abe6cb54b93558a"},"schema_version":"1.0","source":{"id":"1709.00015","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.00015","created_at":"2026-05-18T00:27:12Z"},{"alias_kind":"arxiv_version","alias_value":"1709.00015v1","created_at":"2026-05-18T00:27:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.00015","created_at":"2026-05-18T00:27:12Z"},{"alias_kind":"pith_short_12","alias_value":"G57OWNQDFESW","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"G57OWNQDFESW7FZO","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"G57OWNQD","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:8018bd919308a502ce40a5378da5a9ff5888c164fb08b3ce2e79c23d2c4f9c97","target":"graph","created_at":"2026-05-18T00:27:12Z","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":"With the aim of exploring the properties of the class of FR0 radio galaxies, we selected a sample of 108 compact radio sources, called FR0CAT, by combining observations from the NVSS, FIRST, and SDSS surveys. The catalog includes sources with z$\\leq 0.05$, with a radio size $\\lesssim$ 5 kpc, and with an optical spectrum characteristic of low-excitation galaxies. Their 1.4-GHz radio luminosities range $10^{38} \\lesssim \\nu L_{1.4} \\lesssim 10^{40}$ erg/s. The FR0CAT hosts are mostly (86%) luminous ($-21 \\gtrsim M_r \\gtrsim -23$) red early-type galaxies with black hole masses $10^8 \\lesssim M_{\\","authors_text":"(2) INAF-Osservatorio Astronomico di Torino, (3) University of Torino, A. Capetti (2), F. Massaro (3) ((1) University of Southampton, Italy, Italy), R.D. Baldi (1), UK","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-31T18:00:23Z","title":"FR0CAT: a FIRST catalog of FR0 radio galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.00015","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":"sha256:67b002fa759a7c8e02dcdd1aca6205150c4770ba179330b1ad3034f75b9cd320","target":"record","created_at":"2026-05-18T00:27:12Z","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":"be2cf2bfc2fe088b5ee162b489cfa144e4e8f8025ad9951538004adbc0ebb994","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-31T18:00:23Z","title_canon_sha256":"4f4934b4b65f5a80951853ee2d01304111d4d38309e517221abe6cb54b93558a"},"schema_version":"1.0","source":{"id":"1709.00015","kind":"arxiv","version":1}},"canonical_sha256":"377eeb360329256f972e386efe8c5841b3f32baa081c0486a5c245ec6e7dd75d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"377eeb360329256f972e386efe8c5841b3f32baa081c0486a5c245ec6e7dd75d","first_computed_at":"2026-05-18T00:27:12.992003Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:12.992003Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yH/ViQpAu1D7DrnmyZt0f9sGOn7rpUPzmy0xrEa7bliV7mSD57MbnbKfstwWY+fhYG4kmM78Lc/sDaYp1ZuxAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:12.992650Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.00015","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67b002fa759a7c8e02dcdd1aca6205150c4770ba179330b1ad3034f75b9cd320","sha256:8018bd919308a502ce40a5378da5a9ff5888c164fb08b3ce2e79c23d2c4f9c97"],"state_sha256":"4ee8a7f44c96558cc9dce661d53e37af7407d358932518cfa3e691687168fc42"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GObuQp1AsGoYD0QkqnGdBD8KTs5Lb96qkj1Tlijjppf5pz0F9Zn+t7leFQLnzFMatmygmVOu4UjUo0uKPvLCCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T17:53:34.425162Z","bundle_sha256":"defd28105c289c4d418d24a4a5a71796ad88827aed6504c6e427e6611347aa1a"}}