{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:4TVLVILTG5OFTSLA5B6GZVRQQV","short_pith_number":"pith:4TVLVILT","canonical_record":{"source":{"id":"2109.10914","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-09-22T18:00:01Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"22efe6a544aa1da45a3a835db08a654b58bd0aa7c4e13c800f870565617ea3b5","abstract_canon_sha256":"f1570adb00dc962b3894d51e17ada1dda2e5c2a681579f07be2bc792df0adf8a"},"schema_version":"1.0"},"canonical_sha256":"e4eabaa173375c59c960e87c6cd630857dd5f4e5a800b90021dff738f09126de","source":{"kind":"arxiv","id":"2109.10914","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.10914","created_at":"2026-07-05T03:55:02Z"},{"alias_kind":"arxiv_version","alias_value":"2109.10914v2","created_at":"2026-07-05T03:55:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.10914","created_at":"2026-07-05T03:55:02Z"},{"alias_kind":"pith_short_12","alias_value":"4TVLVILTG5OF","created_at":"2026-07-05T03:55:02Z"},{"alias_kind":"pith_short_16","alias_value":"4TVLVILTG5OFTSLA","created_at":"2026-07-05T03:55:02Z"},{"alias_kind":"pith_short_8","alias_value":"4TVLVILT","created_at":"2026-07-05T03:55:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:4TVLVILTG5OFTSLA5B6GZVRQQV","target":"record","payload":{"canonical_record":{"source":{"id":"2109.10914","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-09-22T18:00:01Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"22efe6a544aa1da45a3a835db08a654b58bd0aa7c4e13c800f870565617ea3b5","abstract_canon_sha256":"f1570adb00dc962b3894d51e17ada1dda2e5c2a681579f07be2bc792df0adf8a"},"schema_version":"1.0"},"canonical_sha256":"e4eabaa173375c59c960e87c6cd630857dd5f4e5a800b90021dff738f09126de","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:55:02.165470Z","signature_b64":"qf80K60TVUvRlsMl+HjeAeDVcKXCVp5A9Lm9cf0rNBrkHe3IzkQvKX1vcrUG6iFj9x221zrQSrrhNPnyDkHtAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4eabaa173375c59c960e87c6cd630857dd5f4e5a800b90021dff738f09126de","last_reissued_at":"2026-07-05T03:55:02.164978Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:55:02.164978Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2109.10914","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:55:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j6Iunhy88WDMzbufuhjeRJbb7QXuLKFQF/XPtgvTYcL8LrYKeOeRmOebS0O9j7MHjU2wJNAfn2MYrpzpq/vfAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T01:01:52.020679Z"},"content_sha256":"173ef41045941d8949959cfe1cf6d3310f555ed8e13d234a29d097a0181088e4","schema_version":"1.0","event_id":"sha256:173ef41045941d8949959cfe1cf6d3310f555ed8e13d234a29d097a0181088e4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:4TVLVILTG5OFTSLA5B6GZVRQQV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmic Near-infrared Background Tomography with SPHEREx Using Galaxy Cross-correlations","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Tzu-Ching Chang, Yun-Ting Cheng","submitted_at":"2021-09-22T18:00:01Z","abstract_excerpt":"The extragalactic background light (EBL) consists of integrated light from all sources of emission throughout the history of the universe. At near-infrared wavelengths, the EBL is dominated by stellar emission across cosmic time; however, the spectral and redshift information of the emitting sources is entangled and cannot be directly measured by absolute photometry or fluctuation measurements. Cross-correlating near-infrared maps with tracers of known redshift enables EBL redshift tomography, as EBL emission will only correlate with external tracers from the same redshift. Here, we forecast t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.10914","kind":"arxiv","version":2},"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/2109.10914/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":"2026-07-05T03:55:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YqQS50rgp7ythYMDXsw0GF+TwHna/QK9cOwRwRHAtESjYYLQ9Xa0rEGRLiGyhJP3cY2UDKnww4oXn+OS5p8lBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T01:01:52.021191Z"},"content_sha256":"53f91b72f28298a7149513b6e8b39d3b37b299f99e0d40f08cc7d2b15f9a4c88","schema_version":"1.0","event_id":"sha256:53f91b72f28298a7149513b6e8b39d3b37b299f99e0d40f08cc7d2b15f9a4c88"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4TVLVILTG5OFTSLA5B6GZVRQQV/bundle.json","state_url":"https://pith.science/pith/4TVLVILTG5OFTSLA5B6GZVRQQV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4TVLVILTG5OFTSLA5B6GZVRQQV/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":"2026-08-04T01:01:52Z","links":{"resolver":"https://pith.science/pith/4TVLVILTG5OFTSLA5B6GZVRQQV","bundle":"https://pith.science/pith/4TVLVILTG5OFTSLA5B6GZVRQQV/bundle.json","state":"https://pith.science/pith/4TVLVILTG5OFTSLA5B6GZVRQQV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4TVLVILTG5OFTSLA5B6GZVRQQV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:4TVLVILTG5OFTSLA5B6GZVRQQV","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":"f1570adb00dc962b3894d51e17ada1dda2e5c2a681579f07be2bc792df0adf8a","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-09-22T18:00:01Z","title_canon_sha256":"22efe6a544aa1da45a3a835db08a654b58bd0aa7c4e13c800f870565617ea3b5"},"schema_version":"1.0","source":{"id":"2109.10914","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.10914","created_at":"2026-07-05T03:55:02Z"},{"alias_kind":"arxiv_version","alias_value":"2109.10914v2","created_at":"2026-07-05T03:55:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.10914","created_at":"2026-07-05T03:55:02Z"},{"alias_kind":"pith_short_12","alias_value":"4TVLVILTG5OF","created_at":"2026-07-05T03:55:02Z"},{"alias_kind":"pith_short_16","alias_value":"4TVLVILTG5OFTSLA","created_at":"2026-07-05T03:55:02Z"},{"alias_kind":"pith_short_8","alias_value":"4TVLVILT","created_at":"2026-07-05T03:55:02Z"}],"graph_snapshots":[{"event_id":"sha256:53f91b72f28298a7149513b6e8b39d3b37b299f99e0d40f08cc7d2b15f9a4c88","target":"graph","created_at":"2026-07-05T03:55:02Z","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/2109.10914/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The extragalactic background light (EBL) consists of integrated light from all sources of emission throughout the history of the universe. At near-infrared wavelengths, the EBL is dominated by stellar emission across cosmic time; however, the spectral and redshift information of the emitting sources is entangled and cannot be directly measured by absolute photometry or fluctuation measurements. Cross-correlating near-infrared maps with tracers of known redshift enables EBL redshift tomography, as EBL emission will only correlate with external tracers from the same redshift. Here, we forecast t","authors_text":"Tzu-Ching Chang, Yun-Ting Cheng","cross_cats":["astro-ph.GA"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-09-22T18:00:01Z","title":"Cosmic Near-infrared Background Tomography with SPHEREx Using Galaxy Cross-correlations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.10914","kind":"arxiv","version":2},"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":"sha256:173ef41045941d8949959cfe1cf6d3310f555ed8e13d234a29d097a0181088e4","target":"record","created_at":"2026-07-05T03:55:02Z","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":"f1570adb00dc962b3894d51e17ada1dda2e5c2a681579f07be2bc792df0adf8a","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-09-22T18:00:01Z","title_canon_sha256":"22efe6a544aa1da45a3a835db08a654b58bd0aa7c4e13c800f870565617ea3b5"},"schema_version":"1.0","source":{"id":"2109.10914","kind":"arxiv","version":2}},"canonical_sha256":"e4eabaa173375c59c960e87c6cd630857dd5f4e5a800b90021dff738f09126de","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e4eabaa173375c59c960e87c6cd630857dd5f4e5a800b90021dff738f09126de","first_computed_at":"2026-07-05T03:55:02.164978Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:55:02.164978Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qf80K60TVUvRlsMl+HjeAeDVcKXCVp5A9Lm9cf0rNBrkHe3IzkQvKX1vcrUG6iFj9x221zrQSrrhNPnyDkHtAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:55:02.165470Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.10914","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:173ef41045941d8949959cfe1cf6d3310f555ed8e13d234a29d097a0181088e4","sha256:53f91b72f28298a7149513b6e8b39d3b37b299f99e0d40f08cc7d2b15f9a4c88"],"state_sha256":"16e536fa8fbbbd1292d98e032fb7ec8d4073284b1507de972afae8bcfa9f16e6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SOFewV+Xfph8TSowoYHNoM7n/UmLLwAymoI5hzxaPfXVqjUsuZA3l93C2Mnd600B5tsWbCYILUz3ZyjpUS+ZAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T01:01:52.025667Z","bundle_sha256":"9078f027e93c8d6f9572ac8c56042ac1a145f8f1cf71a161a71f6280d5e1295d"}}