{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:WYZMF4FOVIYP2V2WCYH5XYLDAF","short_pith_number":"pith:WYZMF4FO","canonical_record":{"source":{"id":"2502.20136","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-02-27T14:31:01Z","cross_cats_sorted":[],"title_canon_sha256":"323dae918aed2ccfaec608127d83b957d5da9c83c42fe73a94a6be064ff45eec","abstract_canon_sha256":"f940d8e77448413fd35405bc620fc91b0db429a98d4f83bea89fc22517682bfd"},"schema_version":"1.0"},"canonical_sha256":"b632c2f0aeaa30fd5756160fdbe1630177bef6f6010756d85147dd7b0fb8aa34","source":{"kind":"arxiv","id":"2502.20136","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.20136","created_at":"2026-07-05T10:52:20Z"},{"alias_kind":"arxiv_version","alias_value":"2502.20136v1","created_at":"2026-07-05T10:52:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.20136","created_at":"2026-07-05T10:52:20Z"},{"alias_kind":"pith_short_12","alias_value":"WYZMF4FOVIYP","created_at":"2026-07-05T10:52:20Z"},{"alias_kind":"pith_short_16","alias_value":"WYZMF4FOVIYP2V2W","created_at":"2026-07-05T10:52:20Z"},{"alias_kind":"pith_short_8","alias_value":"WYZMF4FO","created_at":"2026-07-05T10:52:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:WYZMF4FOVIYP2V2WCYH5XYLDAF","target":"record","payload":{"canonical_record":{"source":{"id":"2502.20136","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-02-27T14:31:01Z","cross_cats_sorted":[],"title_canon_sha256":"323dae918aed2ccfaec608127d83b957d5da9c83c42fe73a94a6be064ff45eec","abstract_canon_sha256":"f940d8e77448413fd35405bc620fc91b0db429a98d4f83bea89fc22517682bfd"},"schema_version":"1.0"},"canonical_sha256":"b632c2f0aeaa30fd5756160fdbe1630177bef6f6010756d85147dd7b0fb8aa34","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:52:20.282722Z","signature_b64":"i7+mT9uZawZpxv6qOhALIY+hj6zGVZhtHQthzIA4RA7IKElAb4syVCJozZcb0GHSE9wYj2iY+/euJNwecJIaDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b632c2f0aeaa30fd5756160fdbe1630177bef6f6010756d85147dd7b0fb8aa34","last_reissued_at":"2026-07-05T10:52:20.282286Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:52:20.282286Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.20136","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":"2026-07-05T10:52:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QCWURF3Es42N1+5fUqcCTTWjV3P5jtVHMxJblHjOHXsuSRt572Sg4kioEmujorrMg0GkGtmtTIyCbrJ+eF8FBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T18:18:51.294362Z"},"content_sha256":"db0ecf680f64f6434c58806578743ecbcf9b2a839bc8258cbd68e9972d9bd57d","schema_version":"1.0","event_id":"sha256:db0ecf680f64f6434c58806578743ecbcf9b2a839bc8258cbd68e9972d9bd57d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:WYZMF4FOVIYP2V2WCYH5XYLDAF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The COSMOS-Web ring: Spectroscopic confirmation of the background source at z = 5.1","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Ali Ahmad Khostovan, Andrea Enia, Aristeidis Amvrosiadis, B. Hollis Akins, Clotilde Laigle, Damien Le Borgne, E. Georgios Magdis, Henry Joy McCracken, L. Andreas Faisst, Laure Ciesla, M. Anton Koekemoer, Marko Shuntov, Mattia Vaccari, Maximilien Franco, M. Caitlin Casey, Olivier Ilbert, Rafael Arango-Toro, Rapha\\\"el Gavazzi, Rebecca Larson, Richard Massey, Shuowen Jin, S. Jeyhan Kartaltepe, Thibaud Moutard, Wilfried Mercier, W. James Nightingale","submitted_at":"2025-02-27T14:31:01Z","abstract_excerpt":"We report the spectroscopic confirmation of the background source of the most distant Einstein ring known to date, the COSMOS-Web ring. This system consists of a complete Einstein ring at $z=5.1$, lensed by a massive early-type galaxy at $z\\sim2$. The redshift $z=5.1043\\pm0.0004$ is unambiguously identified with our NOEMA and Keck/MOSFIRE spectroscopy, where the NOEMA observations reveal the CO(4-3) and CO(5-4) lines at $>8\\,\\sigma$, and the MOSFIRE data detect [O\\textsc{ii}] at $\\sim 6\\,\\sigma$. Using multi-wavelength photometry spanning near-infrared to radio bands, we find that the lensed g"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.20136","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/2502.20136/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":"2026-07-05T10:52:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"05tw8YkfbrjAB4BDQ7RBMo/lz04W4QAkixVZmtJ2ZI0Vv46BTE2MisWE/OeOMfJt6fHa9yIa0zDigNWqUiyYBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T18:18:51.295021Z"},"content_sha256":"b99fecc361b61261dfe5522e9d287b4db0618a0df506271787421426d5552574","schema_version":"1.0","event_id":"sha256:b99fecc361b61261dfe5522e9d287b4db0618a0df506271787421426d5552574"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WYZMF4FOVIYP2V2WCYH5XYLDAF/bundle.json","state_url":"https://pith.science/pith/WYZMF4FOVIYP2V2WCYH5XYLDAF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WYZMF4FOVIYP2V2WCYH5XYLDAF/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":"2026-08-23T18:18:51Z","links":{"resolver":"https://pith.science/pith/WYZMF4FOVIYP2V2WCYH5XYLDAF","bundle":"https://pith.science/pith/WYZMF4FOVIYP2V2WCYH5XYLDAF/bundle.json","state":"https://pith.science/pith/WYZMF4FOVIYP2V2WCYH5XYLDAF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WYZMF4FOVIYP2V2WCYH5XYLDAF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:WYZMF4FOVIYP2V2WCYH5XYLDAF","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":"f940d8e77448413fd35405bc620fc91b0db429a98d4f83bea89fc22517682bfd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-02-27T14:31:01Z","title_canon_sha256":"323dae918aed2ccfaec608127d83b957d5da9c83c42fe73a94a6be064ff45eec"},"schema_version":"1.0","source":{"id":"2502.20136","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.20136","created_at":"2026-07-05T10:52:20Z"},{"alias_kind":"arxiv_version","alias_value":"2502.20136v1","created_at":"2026-07-05T10:52:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.20136","created_at":"2026-07-05T10:52:20Z"},{"alias_kind":"pith_short_12","alias_value":"WYZMF4FOVIYP","created_at":"2026-07-05T10:52:20Z"},{"alias_kind":"pith_short_16","alias_value":"WYZMF4FOVIYP2V2W","created_at":"2026-07-05T10:52:20Z"},{"alias_kind":"pith_short_8","alias_value":"WYZMF4FO","created_at":"2026-07-05T10:52:20Z"}],"graph_snapshots":[{"event_id":"sha256:b99fecc361b61261dfe5522e9d287b4db0618a0df506271787421426d5552574","target":"graph","created_at":"2026-07-05T10:52:20Z","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/2502.20136/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the spectroscopic confirmation of the background source of the most distant Einstein ring known to date, the COSMOS-Web ring. This system consists of a complete Einstein ring at $z=5.1$, lensed by a massive early-type galaxy at $z\\sim2$. The redshift $z=5.1043\\pm0.0004$ is unambiguously identified with our NOEMA and Keck/MOSFIRE spectroscopy, where the NOEMA observations reveal the CO(4-3) and CO(5-4) lines at $>8\\,\\sigma$, and the MOSFIRE data detect [O\\textsc{ii}] at $\\sim 6\\,\\sigma$. Using multi-wavelength photometry spanning near-infrared to radio bands, we find that the lensed g","authors_text":"Ali Ahmad Khostovan, Andrea Enia, Aristeidis Amvrosiadis, B. Hollis Akins, Clotilde Laigle, Damien Le Borgne, E. Georgios Magdis, Henry Joy McCracken, L. Andreas Faisst, Laure Ciesla, M. Anton Koekemoer, Marko Shuntov, Mattia Vaccari, Maximilien Franco, M. Caitlin Casey, Olivier Ilbert, Rafael Arango-Toro, Rapha\\\"el Gavazzi, Rebecca Larson, Richard Massey, Shuowen Jin, S. Jeyhan Kartaltepe, Thibaud Moutard, Wilfried Mercier, W. James Nightingale","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-02-27T14:31:01Z","title":"The COSMOS-Web ring: Spectroscopic confirmation of the background source at z = 5.1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.20136","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:db0ecf680f64f6434c58806578743ecbcf9b2a839bc8258cbd68e9972d9bd57d","target":"record","created_at":"2026-07-05T10:52:20Z","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":"f940d8e77448413fd35405bc620fc91b0db429a98d4f83bea89fc22517682bfd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-02-27T14:31:01Z","title_canon_sha256":"323dae918aed2ccfaec608127d83b957d5da9c83c42fe73a94a6be064ff45eec"},"schema_version":"1.0","source":{"id":"2502.20136","kind":"arxiv","version":1}},"canonical_sha256":"b632c2f0aeaa30fd5756160fdbe1630177bef6f6010756d85147dd7b0fb8aa34","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b632c2f0aeaa30fd5756160fdbe1630177bef6f6010756d85147dd7b0fb8aa34","first_computed_at":"2026-07-05T10:52:20.282286Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:52:20.282286Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"i7+mT9uZawZpxv6qOhALIY+hj6zGVZhtHQthzIA4RA7IKElAb4syVCJozZcb0GHSE9wYj2iY+/euJNwecJIaDg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:52:20.282722Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.20136","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:db0ecf680f64f6434c58806578743ecbcf9b2a839bc8258cbd68e9972d9bd57d","sha256:b99fecc361b61261dfe5522e9d287b4db0618a0df506271787421426d5552574"],"state_sha256":"f30920723a5ce8b83a90d0ddccccc53eb499b91c887b744948523b5e54a5c8d8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ruIfJa3GJQINEY9IyTju9va3yNVvgZFDzDjmNnE52d8p1Mvtz60yc69OcWM4rHx2DNBS+qD1WKGfCG8f+U4QCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T18:18:51.300423Z","bundle_sha256":"ee952334fc1089a6d40fb008d6b573e349201e45aabe53510c7a0942b288968d"}}