{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:KTL6SAKDADUNX5WMJ2E7XDLMBD","short_pith_number":"pith:KTL6SAKD","canonical_record":{"source":{"id":"2007.10368","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-07-20T18:00:51Z","cross_cats_sorted":[],"title_canon_sha256":"2578a9c51a127ffae89b0d7c849610f7fa0f339d430aa6d6c071b8449e9fd522","abstract_canon_sha256":"ee459fea1549e9384b317e37875245c2fd52d2173de1717a2717a87aa0f3a4f7"},"schema_version":"1.0"},"canonical_sha256":"54d7e9014300e8dbf6cc4e89fb8d6c08d9a2ce5001a9be30638d681985ee7edf","source":{"kind":"arxiv","id":"2007.10368","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.10368","created_at":"2026-07-05T01:26:22Z"},{"alias_kind":"arxiv_version","alias_value":"2007.10368v1","created_at":"2026-07-05T01:26:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.10368","created_at":"2026-07-05T01:26:22Z"},{"alias_kind":"pith_short_12","alias_value":"KTL6SAKDADUN","created_at":"2026-07-05T01:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"KTL6SAKDADUNX5WM","created_at":"2026-07-05T01:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"KTL6SAKD","created_at":"2026-07-05T01:26:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:KTL6SAKDADUNX5WMJ2E7XDLMBD","target":"record","payload":{"canonical_record":{"source":{"id":"2007.10368","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-07-20T18:00:51Z","cross_cats_sorted":[],"title_canon_sha256":"2578a9c51a127ffae89b0d7c849610f7fa0f339d430aa6d6c071b8449e9fd522","abstract_canon_sha256":"ee459fea1549e9384b317e37875245c2fd52d2173de1717a2717a87aa0f3a4f7"},"schema_version":"1.0"},"canonical_sha256":"54d7e9014300e8dbf6cc4e89fb8d6c08d9a2ce5001a9be30638d681985ee7edf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:26:22.064951Z","signature_b64":"lpCASgH9diaQMzLIyLlUPNa+OW9xwa3sAqDu/bBSwDXMaJ20A2NgoXfDiHcy992yOVZop8VJ+8pCXnCNRCccCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"54d7e9014300e8dbf6cc4e89fb8d6c08d9a2ce5001a9be30638d681985ee7edf","last_reissued_at":"2026-07-05T01:26:22.064455Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:26:22.064455Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.10368","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":"2026-07-05T01:26:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aG5S/sko3boaX4j7AGHBfTZ76t4nBwewIXegTqQnd57kObtPxmz5mPym/2t5RFb5JjJV1fP2V6As9GgyG3/KDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T14:15:40.060843Z"},"content_sha256":"ff8506030376d9c46effe55cee0fc1a3884ff6c68d9bec0b9ae3b494a4991498","schema_version":"1.0","event_id":"sha256:ff8506030376d9c46effe55cee0fc1a3884ff6c68d9bec0b9ae3b494a4991498"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:KTL6SAKDADUNX5WMJ2E7XDLMBD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extended X-ray emission from the z=4.26 radio galaxy 4C 63.20","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Adi Foord, Benedetta Ciardi, Edmund Hodges-Kluck, Elena Gallo, Francesco Haardt, Gabriele Ghisellini, Jianfeng Wu, Kate Napier","submitted_at":"2020-07-20T18:00:51Z","abstract_excerpt":"We report on deep Chandra X-ray Telescope imaging observations of 4C 63.20, one of the few known radio galaxies at z>3.5. The X-ray counterpart is resolved into a core plus two off-nuclear sources that (combined) account for close to 30% of the total X-ray flux. Their morphology and orientation are consistent with a diffuse, lobe-like nature, albeit compact hotspots cannot be ruled out. The broadband spectral energy distribution of 4C 63.20 can be reproduced with a jet model where the majority of the radio flux can be ascribed to synchrotron emission from the hotspots, whereas the (non-nuclear"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.10368","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/2007.10368/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":"2026-07-05T01:26:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CHcacq9tH6MPYN1Fv+B6PznDqjXJ/mC6YMQL/fScp6WSU2r2OeerdZS22KL9a8X4eZ1WdkDjIB2KAF30hUyQDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T14:15:40.061335Z"},"content_sha256":"c285e3c4c465ba3bd303daf11f5f1cab73e5aa63baf40be8dfc026e514a9d717","schema_version":"1.0","event_id":"sha256:c285e3c4c465ba3bd303daf11f5f1cab73e5aa63baf40be8dfc026e514a9d717"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KTL6SAKDADUNX5WMJ2E7XDLMBD/bundle.json","state_url":"https://pith.science/pith/KTL6SAKDADUNX5WMJ2E7XDLMBD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KTL6SAKDADUNX5WMJ2E7XDLMBD/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":"2026-08-16T14:15:40Z","links":{"resolver":"https://pith.science/pith/KTL6SAKDADUNX5WMJ2E7XDLMBD","bundle":"https://pith.science/pith/KTL6SAKDADUNX5WMJ2E7XDLMBD/bundle.json","state":"https://pith.science/pith/KTL6SAKDADUNX5WMJ2E7XDLMBD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KTL6SAKDADUNX5WMJ2E7XDLMBD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:KTL6SAKDADUNX5WMJ2E7XDLMBD","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":"ee459fea1549e9384b317e37875245c2fd52d2173de1717a2717a87aa0f3a4f7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-07-20T18:00:51Z","title_canon_sha256":"2578a9c51a127ffae89b0d7c849610f7fa0f339d430aa6d6c071b8449e9fd522"},"schema_version":"1.0","source":{"id":"2007.10368","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.10368","created_at":"2026-07-05T01:26:22Z"},{"alias_kind":"arxiv_version","alias_value":"2007.10368v1","created_at":"2026-07-05T01:26:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.10368","created_at":"2026-07-05T01:26:22Z"},{"alias_kind":"pith_short_12","alias_value":"KTL6SAKDADUN","created_at":"2026-07-05T01:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"KTL6SAKDADUNX5WM","created_at":"2026-07-05T01:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"KTL6SAKD","created_at":"2026-07-05T01:26:22Z"}],"graph_snapshots":[{"event_id":"sha256:c285e3c4c465ba3bd303daf11f5f1cab73e5aa63baf40be8dfc026e514a9d717","target":"graph","created_at":"2026-07-05T01:26:22Z","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/2007.10368/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on deep Chandra X-ray Telescope imaging observations of 4C 63.20, one of the few known radio galaxies at z>3.5. The X-ray counterpart is resolved into a core plus two off-nuclear sources that (combined) account for close to 30% of the total X-ray flux. Their morphology and orientation are consistent with a diffuse, lobe-like nature, albeit compact hotspots cannot be ruled out. The broadband spectral energy distribution of 4C 63.20 can be reproduced with a jet model where the majority of the radio flux can be ascribed to synchrotron emission from the hotspots, whereas the (non-nuclear","authors_text":"Adi Foord, Benedetta Ciardi, Edmund Hodges-Kluck, Elena Gallo, Francesco Haardt, Gabriele Ghisellini, Jianfeng Wu, Kate Napier","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-07-20T18:00:51Z","title":"Extended X-ray emission from the z=4.26 radio galaxy 4C 63.20"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.10368","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:ff8506030376d9c46effe55cee0fc1a3884ff6c68d9bec0b9ae3b494a4991498","target":"record","created_at":"2026-07-05T01:26:22Z","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":"ee459fea1549e9384b317e37875245c2fd52d2173de1717a2717a87aa0f3a4f7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-07-20T18:00:51Z","title_canon_sha256":"2578a9c51a127ffae89b0d7c849610f7fa0f339d430aa6d6c071b8449e9fd522"},"schema_version":"1.0","source":{"id":"2007.10368","kind":"arxiv","version":1}},"canonical_sha256":"54d7e9014300e8dbf6cc4e89fb8d6c08d9a2ce5001a9be30638d681985ee7edf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"54d7e9014300e8dbf6cc4e89fb8d6c08d9a2ce5001a9be30638d681985ee7edf","first_computed_at":"2026-07-05T01:26:22.064455Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:26:22.064455Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lpCASgH9diaQMzLIyLlUPNa+OW9xwa3sAqDu/bBSwDXMaJ20A2NgoXfDiHcy992yOVZop8VJ+8pCXnCNRCccCg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:26:22.064951Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.10368","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ff8506030376d9c46effe55cee0fc1a3884ff6c68d9bec0b9ae3b494a4991498","sha256:c285e3c4c465ba3bd303daf11f5f1cab73e5aa63baf40be8dfc026e514a9d717"],"state_sha256":"ad7e3d7d9e3306ff058d3c2c1164dc78f261dc63cd549b04f67331562861785d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vAioGvMs0AULybHSHYibjerhrgMjC+QNYtvcAThyZ+sDk1zxuGqOlRE3u6muGMRqoYDGg816XZdNxWMkjzdjDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T14:15:40.065082Z","bundle_sha256":"00d77569d066038fb300e5cce68b4866d44e2a335c871a0a8600fa927b94fef7"}}