{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:KQDS4KIHOLMIX2ZHON5YFIIKYO","short_pith_number":"pith:KQDS4KIH","canonical_record":{"source":{"id":"2201.03771","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-01-11T04:18:58Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"d315180cb18d54a20f4ace8b581b572c05a616c840faf84fe89f7768051264d3","abstract_canon_sha256":"f0de7db8c376248c5ea1c783860a50353f9a59fe9c62698b2339a3b9ee8f0778"},"schema_version":"1.0"},"canonical_sha256":"54072e290772d88beb27737b82a10ac38afbfcedb1b590e2f5a392f71e22e20d","source":{"kind":"arxiv","id":"2201.03771","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.03771","created_at":"2026-07-05T04:22:40Z"},{"alias_kind":"arxiv_version","alias_value":"2201.03771v2","created_at":"2026-07-05T04:22:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.03771","created_at":"2026-07-05T04:22:40Z"},{"alias_kind":"pith_short_12","alias_value":"KQDS4KIHOLMI","created_at":"2026-07-05T04:22:40Z"},{"alias_kind":"pith_short_16","alias_value":"KQDS4KIHOLMIX2ZH","created_at":"2026-07-05T04:22:40Z"},{"alias_kind":"pith_short_8","alias_value":"KQDS4KIH","created_at":"2026-07-05T04:22:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:KQDS4KIHOLMIX2ZHON5YFIIKYO","target":"record","payload":{"canonical_record":{"source":{"id":"2201.03771","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-01-11T04:18:58Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"d315180cb18d54a20f4ace8b581b572c05a616c840faf84fe89f7768051264d3","abstract_canon_sha256":"f0de7db8c376248c5ea1c783860a50353f9a59fe9c62698b2339a3b9ee8f0778"},"schema_version":"1.0"},"canonical_sha256":"54072e290772d88beb27737b82a10ac38afbfcedb1b590e2f5a392f71e22e20d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:22:40.220509Z","signature_b64":"/iBicsvSQiEVVyGjO+m5tHu1J1U/XmsHn4+UOwnzNFQMoGe3RzNJzy2oheDaG+RBEcrPmQi0jT25ZsbGMFfZDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"54072e290772d88beb27737b82a10ac38afbfcedb1b590e2f5a392f71e22e20d","last_reissued_at":"2026-07-05T04:22:40.220049Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:22:40.220049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2201.03771","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":"2026-07-05T04:22:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BKOL6Bs40P+FmD02UEA39TcnPzPKL45CXj6Pa6kodz7uOaP3FgVuhhKxBN/70utR1rdgM0aBQ443hbHO5TD5CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-19T02:38:11.923741Z"},"content_sha256":"70440e65fed6dff812d69648d74a6344ec6263dbdfe7148c0febeb5fce8ccc6a","schema_version":"1.0","event_id":"sha256:70440e65fed6dff812d69648d74a6344ec6263dbdfe7148c0febeb5fce8ccc6a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:KQDS4KIHOLMIX2ZHON5YFIIKYO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Closing a spontaneous-scalarization window with binary pulsars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Junjie Zhao, Lijing Shao, Michael Kramer, Norbert Wex, Paulo C. C. Freire","submitted_at":"2022-01-11T04:18:58Z","abstract_excerpt":"Benefitting from the unequaled precision of the pulsar timing technique, binary pulsars are important testbeds of gravity theories, providing some of the tightest bounds on alternative theories of gravity. One class of well-motivated alternative gravity theories, the scalar-tensor gravity, predict large deviations from general relativity for neutron stars through a nonperturbative phenomenon known as spontaneous scalarization. This effect, which cannot be tested in the Solar System, can now be tightly constrained using the latest results from the timing of a set of 7 binary pulsars (PSRs J0348"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.03771","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/2201.03771/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":"2026-07-05T04:22:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XZitlE6ARPHZhptVjcfpONXQ3Kbvj4HZRLtLve4mRTXH0pKmuCKtc4FoA4zJW29416PEOnfMfl1CdpiY03mMBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-19T02:38:11.924127Z"},"content_sha256":"330ce952667939ef8be6e2b6ca546ca2ec6ec504c3c0b2c24339828fc412abcd","schema_version":"1.0","event_id":"sha256:330ce952667939ef8be6e2b6ca546ca2ec6ec504c3c0b2c24339828fc412abcd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KQDS4KIHOLMIX2ZHON5YFIIKYO/bundle.json","state_url":"https://pith.science/pith/KQDS4KIHOLMIX2ZHON5YFIIKYO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KQDS4KIHOLMIX2ZHON5YFIIKYO/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":"2026-07-19T02:38:11Z","links":{"resolver":"https://pith.science/pith/KQDS4KIHOLMIX2ZHON5YFIIKYO","bundle":"https://pith.science/pith/KQDS4KIHOLMIX2ZHON5YFIIKYO/bundle.json","state":"https://pith.science/pith/KQDS4KIHOLMIX2ZHON5YFIIKYO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KQDS4KIHOLMIX2ZHON5YFIIKYO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:KQDS4KIHOLMIX2ZHON5YFIIKYO","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":"f0de7db8c376248c5ea1c783860a50353f9a59fe9c62698b2339a3b9ee8f0778","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-01-11T04:18:58Z","title_canon_sha256":"d315180cb18d54a20f4ace8b581b572c05a616c840faf84fe89f7768051264d3"},"schema_version":"1.0","source":{"id":"2201.03771","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.03771","created_at":"2026-07-05T04:22:40Z"},{"alias_kind":"arxiv_version","alias_value":"2201.03771v2","created_at":"2026-07-05T04:22:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.03771","created_at":"2026-07-05T04:22:40Z"},{"alias_kind":"pith_short_12","alias_value":"KQDS4KIHOLMI","created_at":"2026-07-05T04:22:40Z"},{"alias_kind":"pith_short_16","alias_value":"KQDS4KIHOLMIX2ZH","created_at":"2026-07-05T04:22:40Z"},{"alias_kind":"pith_short_8","alias_value":"KQDS4KIH","created_at":"2026-07-05T04:22:40Z"}],"graph_snapshots":[{"event_id":"sha256:330ce952667939ef8be6e2b6ca546ca2ec6ec504c3c0b2c24339828fc412abcd","target":"graph","created_at":"2026-07-05T04:22:40Z","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/2201.03771/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Benefitting from the unequaled precision of the pulsar timing technique, binary pulsars are important testbeds of gravity theories, providing some of the tightest bounds on alternative theories of gravity. One class of well-motivated alternative gravity theories, the scalar-tensor gravity, predict large deviations from general relativity for neutron stars through a nonperturbative phenomenon known as spontaneous scalarization. This effect, which cannot be tested in the Solar System, can now be tightly constrained using the latest results from the timing of a set of 7 binary pulsars (PSRs J0348","authors_text":"Junjie Zhao, Lijing Shao, Michael Kramer, Norbert Wex, Paulo C. C. Freire","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-01-11T04:18:58Z","title":"Closing a spontaneous-scalarization window with binary pulsars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.03771","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":"sha256:70440e65fed6dff812d69648d74a6344ec6263dbdfe7148c0febeb5fce8ccc6a","target":"record","created_at":"2026-07-05T04:22:40Z","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":"f0de7db8c376248c5ea1c783860a50353f9a59fe9c62698b2339a3b9ee8f0778","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-01-11T04:18:58Z","title_canon_sha256":"d315180cb18d54a20f4ace8b581b572c05a616c840faf84fe89f7768051264d3"},"schema_version":"1.0","source":{"id":"2201.03771","kind":"arxiv","version":2}},"canonical_sha256":"54072e290772d88beb27737b82a10ac38afbfcedb1b590e2f5a392f71e22e20d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"54072e290772d88beb27737b82a10ac38afbfcedb1b590e2f5a392f71e22e20d","first_computed_at":"2026-07-05T04:22:40.220049Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:22:40.220049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/iBicsvSQiEVVyGjO+m5tHu1J1U/XmsHn4+UOwnzNFQMoGe3RzNJzy2oheDaG+RBEcrPmQi0jT25ZsbGMFfZDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:22:40.220509Z","signed_message":"canonical_sha256_bytes"},"source_id":"2201.03771","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:70440e65fed6dff812d69648d74a6344ec6263dbdfe7148c0febeb5fce8ccc6a","sha256:330ce952667939ef8be6e2b6ca546ca2ec6ec504c3c0b2c24339828fc412abcd"],"state_sha256":"5e3183582b6b959a210aa7811f1a7772354913e2cef022cbf74ad4a9c9408f80"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m72mp8Gkpoe5uxchnlS+ccHs8wzJTNOcXXrcUoNUgSDuAKayFX+X+YWCYYQpA4fOoh120LxvCnGSOLVsq4W7DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-19T02:38:11.926454Z","bundle_sha256":"7fcda5fe7b8035a11b4319c85f5f63ad7f65c8528da3e8847ac6173854e68231"}}