{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:7YUMH7NKVQQLRNETCTTJD7KTZF","short_pith_number":"pith:7YUMH7NK","canonical_record":{"source":{"id":"2103.12358","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-03-23T07:36:17Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"5cb07944d6bdfeccc2b6257e4c6179ae183666b79913ba24cf5020ff620d1bfc","abstract_canon_sha256":"02dd46a910c86fd5ddca6ac89012ce13c840d40d9b3fb5af7e888604a50fdc87"},"schema_version":"1.0"},"canonical_sha256":"fe28c3fdaaac20b8b49314e691fd53c9505951787754a556965bc0dfda4430d5","source":{"kind":"arxiv","id":"2103.12358","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.12358","created_at":"2026-07-05T02:32:49Z"},{"alias_kind":"arxiv_version","alias_value":"2103.12358v2","created_at":"2026-07-05T02:32:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.12358","created_at":"2026-07-05T02:32:49Z"},{"alias_kind":"pith_short_12","alias_value":"7YUMH7NKVQQL","created_at":"2026-07-05T02:32:49Z"},{"alias_kind":"pith_short_16","alias_value":"7YUMH7NKVQQLRNET","created_at":"2026-07-05T02:32:49Z"},{"alias_kind":"pith_short_8","alias_value":"7YUMH7NK","created_at":"2026-07-05T02:32:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:7YUMH7NKVQQLRNETCTTJD7KTZF","target":"record","payload":{"canonical_record":{"source":{"id":"2103.12358","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-03-23T07:36:17Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"5cb07944d6bdfeccc2b6257e4c6179ae183666b79913ba24cf5020ff620d1bfc","abstract_canon_sha256":"02dd46a910c86fd5ddca6ac89012ce13c840d40d9b3fb5af7e888604a50fdc87"},"schema_version":"1.0"},"canonical_sha256":"fe28c3fdaaac20b8b49314e691fd53c9505951787754a556965bc0dfda4430d5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:32:49.296456Z","signature_b64":"SHplrAVFCjlkLEftmH+NLZFMkcmM/o0IpoxnftO5g5LXWo1yJYW8H2RZtOl7ge/5FSC2BVUEwNaho3pCv4DEDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe28c3fdaaac20b8b49314e691fd53c9505951787754a556965bc0dfda4430d5","last_reissued_at":"2026-07-05T02:32:49.295987Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:32:49.295987Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2103.12358","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":"2026-07-05T02:32:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3r9JrcYFfZWToKo8EggfbHywlLNConz+87T4MsD/Ng8ECvPpLA87LQsZeggKoiPSZscGOtEsxmDG6YUa394CBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T07:56:05.087644Z"},"content_sha256":"6ec6655e0c450a89a6da9036fb2bc38267430540bdc5f27e6299dd111398a2f4","schema_version":"1.0","event_id":"sha256:6ec6655e0c450a89a6da9036fb2bc38267430540bdc5f27e6299dd111398a2f4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:7YUMH7NKVQQLRNETCTTJD7KTZF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"4D Gauss-Bonnet gravity: cosmological constraints, $H_0$ tension and large scale structure","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"David Mota, Deng Wang","submitted_at":"2021-03-23T07:36:17Z","abstract_excerpt":"We perform correct and reasonable cosmological constraints on the newly proposed 4D Gauss-Bonnet gravity. Using the joint constraint from cosmic microwave background, baryon acoustic oscillations, Type Ia supernovae, cosmic chronometers and redshift space distortions, we obtain, so far, the strongest constraint $\\tilde{\\alpha}=(1.2\\pm5.2)\\times 10^{-17}$, namely $\\alpha=(2.69\\pm11.67)\\times10^{48}$ eV$^{-2}$, among various observational limitations from different information channels, which is tighter than previous bound from the speed of gravitational wave by at least one order of magnitude. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.12358","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/2103.12358/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":"2026-07-05T02:32:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EN8/7oq/DKw/4jU48mkYMbCqYVBfuWuqiQ4RjNttHYHLXfMd9rbSLrm224jIqVdFMliX7WKpGPjIV+PKvOMJDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T07:56:05.088230Z"},"content_sha256":"5da62c990abb4d13dedcab8416fd9ec56f0d42570b4e4571794cc7df9ff74892","schema_version":"1.0","event_id":"sha256:5da62c990abb4d13dedcab8416fd9ec56f0d42570b4e4571794cc7df9ff74892"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7YUMH7NKVQQLRNETCTTJD7KTZF/bundle.json","state_url":"https://pith.science/pith/7YUMH7NKVQQLRNETCTTJD7KTZF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7YUMH7NKVQQLRNETCTTJD7KTZF/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":"2026-08-07T07:56:05Z","links":{"resolver":"https://pith.science/pith/7YUMH7NKVQQLRNETCTTJD7KTZF","bundle":"https://pith.science/pith/7YUMH7NKVQQLRNETCTTJD7KTZF/bundle.json","state":"https://pith.science/pith/7YUMH7NKVQQLRNETCTTJD7KTZF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7YUMH7NKVQQLRNETCTTJD7KTZF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:7YUMH7NKVQQLRNETCTTJD7KTZF","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":"02dd46a910c86fd5ddca6ac89012ce13c840d40d9b3fb5af7e888604a50fdc87","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-03-23T07:36:17Z","title_canon_sha256":"5cb07944d6bdfeccc2b6257e4c6179ae183666b79913ba24cf5020ff620d1bfc"},"schema_version":"1.0","source":{"id":"2103.12358","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.12358","created_at":"2026-07-05T02:32:49Z"},{"alias_kind":"arxiv_version","alias_value":"2103.12358v2","created_at":"2026-07-05T02:32:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.12358","created_at":"2026-07-05T02:32:49Z"},{"alias_kind":"pith_short_12","alias_value":"7YUMH7NKVQQL","created_at":"2026-07-05T02:32:49Z"},{"alias_kind":"pith_short_16","alias_value":"7YUMH7NKVQQLRNET","created_at":"2026-07-05T02:32:49Z"},{"alias_kind":"pith_short_8","alias_value":"7YUMH7NK","created_at":"2026-07-05T02:32:49Z"}],"graph_snapshots":[{"event_id":"sha256:5da62c990abb4d13dedcab8416fd9ec56f0d42570b4e4571794cc7df9ff74892","target":"graph","created_at":"2026-07-05T02:32:49Z","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/2103.12358/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We perform correct and reasonable cosmological constraints on the newly proposed 4D Gauss-Bonnet gravity. Using the joint constraint from cosmic microwave background, baryon acoustic oscillations, Type Ia supernovae, cosmic chronometers and redshift space distortions, we obtain, so far, the strongest constraint $\\tilde{\\alpha}=(1.2\\pm5.2)\\times 10^{-17}$, namely $\\alpha=(2.69\\pm11.67)\\times10^{48}$ eV$^{-2}$, among various observational limitations from different information channels, which is tighter than previous bound from the speed of gravitational wave by at least one order of magnitude. ","authors_text":"David Mota, Deng Wang","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-03-23T07:36:17Z","title":"4D Gauss-Bonnet gravity: cosmological constraints, $H_0$ tension and large scale structure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.12358","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":"sha256:6ec6655e0c450a89a6da9036fb2bc38267430540bdc5f27e6299dd111398a2f4","target":"record","created_at":"2026-07-05T02:32:49Z","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":"02dd46a910c86fd5ddca6ac89012ce13c840d40d9b3fb5af7e888604a50fdc87","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-03-23T07:36:17Z","title_canon_sha256":"5cb07944d6bdfeccc2b6257e4c6179ae183666b79913ba24cf5020ff620d1bfc"},"schema_version":"1.0","source":{"id":"2103.12358","kind":"arxiv","version":2}},"canonical_sha256":"fe28c3fdaaac20b8b49314e691fd53c9505951787754a556965bc0dfda4430d5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe28c3fdaaac20b8b49314e691fd53c9505951787754a556965bc0dfda4430d5","first_computed_at":"2026-07-05T02:32:49.295987Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:32:49.295987Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SHplrAVFCjlkLEftmH+NLZFMkcmM/o0IpoxnftO5g5LXWo1yJYW8H2RZtOl7ge/5FSC2BVUEwNaho3pCv4DEDw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:32:49.296456Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.12358","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6ec6655e0c450a89a6da9036fb2bc38267430540bdc5f27e6299dd111398a2f4","sha256:5da62c990abb4d13dedcab8416fd9ec56f0d42570b4e4571794cc7df9ff74892"],"state_sha256":"d1c4b489567a2a371665a50166e97d5f2ac25b07961109fdb5192ee94d46e657"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I53aHGTLHhkxkZ1jxd4xSQuM5I0C3c2BjAt8v7fXs4fQs9qUkfGeei2zCwKRlhA5RJ6BfPDL4voslqbKGTEyCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T07:56:05.093363Z","bundle_sha256":"799887739d9ee5440323a539c34064ad86224e2ef5be621ac66f215bb95de674"}}