{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:TCGRR7T2QV4MQM63PO4GACJRBM","short_pith_number":"pith:TCGRR7T2","canonical_record":{"source":{"id":"1707.02541","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-07-09T08:17:14Z","cross_cats_sorted":[],"title_canon_sha256":"44b77859527ba537a9e7dd505e1664cf9a16c3419e0f036d8993df9050271d35","abstract_canon_sha256":"2ca3a523dedb8ce643e2ff02619f06035e1c5b30025ab64967679ec27534ef91"},"schema_version":"1.0"},"canonical_sha256":"988d18fe7a8578c833db7bb86009310b00b64d208fc29bfc0a1ff19d144e648a","source":{"kind":"arxiv","id":"1707.02541","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.02541","created_at":"2026-05-18T00:11:43Z"},{"alias_kind":"arxiv_version","alias_value":"1707.02541v2","created_at":"2026-05-18T00:11:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.02541","created_at":"2026-05-18T00:11:43Z"},{"alias_kind":"pith_short_12","alias_value":"TCGRR7T2QV4M","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"TCGRR7T2QV4MQM63","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"TCGRR7T2","created_at":"2026-05-18T12:31:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:TCGRR7T2QV4MQM63PO4GACJRBM","target":"record","payload":{"canonical_record":{"source":{"id":"1707.02541","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-07-09T08:17:14Z","cross_cats_sorted":[],"title_canon_sha256":"44b77859527ba537a9e7dd505e1664cf9a16c3419e0f036d8993df9050271d35","abstract_canon_sha256":"2ca3a523dedb8ce643e2ff02619f06035e1c5b30025ab64967679ec27534ef91"},"schema_version":"1.0"},"canonical_sha256":"988d18fe7a8578c833db7bb86009310b00b64d208fc29bfc0a1ff19d144e648a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:11:43.316773Z","signature_b64":"OJ1lDo33EJptJuyHYkwqwXHK3KaVB/yaS2J8uoFudjUOtuRyWLISnWEr9N3g+mJoelHbe+sqDQllkzwDJn7PAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"988d18fe7a8578c833db7bb86009310b00b64d208fc29bfc0a1ff19d144e648a","last_reissued_at":"2026-05-18T00:11:43.316122Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:11:43.316122Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.02541","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":"2026-05-18T00:11:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D7VRP6PKvYmBbJhWvDNwmvFdtSplEvn4a/JcxCOH/HVSU4QHtWHdBUkoiancMjl8uk8ctWB86wEnM/mMgeVVAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:02:58.897388Z"},"content_sha256":"8f64c434413e5c4178198d0c7ed34cf018aae5d0307e6b7f5461f98372252787","schema_version":"1.0","event_id":"sha256:8f64c434413e5c4178198d0c7ed34cf018aae5d0307e6b7f5461f98372252787"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:TCGRR7T2QV4MQM63PO4GACJRBM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmic ray production in modified gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Alexander D. Dolgov, Elena V. Arbuzova, Lorenzo Reverberi","submitted_at":"2017-07-09T08:17:14Z","abstract_excerpt":"This paper is a reply to the criticism of our work on particle production in modified gravity by D. Gorbunov and A. Tokareva. We show that their arguments against efficient particle production are invalid. $F(R)$ theories can lead to an efficient generation of high energy cosmic rays in contracting systems."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.02541","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":""},"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":"2026-05-18T00:11:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p/k5AsdEn1WPEA2sIy8Op4GjWmqfYHmYgDYfq5T9ITTb4sKz+PW3beaJYWV5CcY+0x/YDyKE/VzIhNR0WcLCDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:02:58.897740Z"},"content_sha256":"99a6651943614eac6c976f0ea85f95ab6805430b40a071153dd10c29a0ab0779","schema_version":"1.0","event_id":"sha256:99a6651943614eac6c976f0ea85f95ab6805430b40a071153dd10c29a0ab0779"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TCGRR7T2QV4MQM63PO4GACJRBM/bundle.json","state_url":"https://pith.science/pith/TCGRR7T2QV4MQM63PO4GACJRBM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TCGRR7T2QV4MQM63PO4GACJRBM/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":"2026-05-27T07:02:58Z","links":{"resolver":"https://pith.science/pith/TCGRR7T2QV4MQM63PO4GACJRBM","bundle":"https://pith.science/pith/TCGRR7T2QV4MQM63PO4GACJRBM/bundle.json","state":"https://pith.science/pith/TCGRR7T2QV4MQM63PO4GACJRBM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TCGRR7T2QV4MQM63PO4GACJRBM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:TCGRR7T2QV4MQM63PO4GACJRBM","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":"2ca3a523dedb8ce643e2ff02619f06035e1c5b30025ab64967679ec27534ef91","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-07-09T08:17:14Z","title_canon_sha256":"44b77859527ba537a9e7dd505e1664cf9a16c3419e0f036d8993df9050271d35"},"schema_version":"1.0","source":{"id":"1707.02541","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.02541","created_at":"2026-05-18T00:11:43Z"},{"alias_kind":"arxiv_version","alias_value":"1707.02541v2","created_at":"2026-05-18T00:11:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.02541","created_at":"2026-05-18T00:11:43Z"},{"alias_kind":"pith_short_12","alias_value":"TCGRR7T2QV4M","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"TCGRR7T2QV4MQM63","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"TCGRR7T2","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:99a6651943614eac6c976f0ea85f95ab6805430b40a071153dd10c29a0ab0779","target":"graph","created_at":"2026-05-18T00:11:43Z","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"},"paper":{"abstract_excerpt":"This paper is a reply to the criticism of our work on particle production in modified gravity by D. Gorbunov and A. Tokareva. We show that their arguments against efficient particle production are invalid. $F(R)$ theories can lead to an efficient generation of high energy cosmic rays in contracting systems.","authors_text":"Alexander D. Dolgov, Elena V. Arbuzova, Lorenzo Reverberi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-07-09T08:17:14Z","title":"Cosmic ray production in modified gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.02541","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":"sha256:8f64c434413e5c4178198d0c7ed34cf018aae5d0307e6b7f5461f98372252787","target":"record","created_at":"2026-05-18T00:11:43Z","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":"2ca3a523dedb8ce643e2ff02619f06035e1c5b30025ab64967679ec27534ef91","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-07-09T08:17:14Z","title_canon_sha256":"44b77859527ba537a9e7dd505e1664cf9a16c3419e0f036d8993df9050271d35"},"schema_version":"1.0","source":{"id":"1707.02541","kind":"arxiv","version":2}},"canonical_sha256":"988d18fe7a8578c833db7bb86009310b00b64d208fc29bfc0a1ff19d144e648a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"988d18fe7a8578c833db7bb86009310b00b64d208fc29bfc0a1ff19d144e648a","first_computed_at":"2026-05-18T00:11:43.316122Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:43.316122Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OJ1lDo33EJptJuyHYkwqwXHK3KaVB/yaS2J8uoFudjUOtuRyWLISnWEr9N3g+mJoelHbe+sqDQllkzwDJn7PAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:43.316773Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.02541","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8f64c434413e5c4178198d0c7ed34cf018aae5d0307e6b7f5461f98372252787","sha256:99a6651943614eac6c976f0ea85f95ab6805430b40a071153dd10c29a0ab0779"],"state_sha256":"e43d63f277eb6dc0663bf178e62fcd41da0c9ea62bd53b25dc69484f32d766e7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HxPP/8mJxY7rbRNaliLFmTjR+p5ZwIduIvWicU2yXNiNAm2E7+Nr6FCuhx/Ld19ynA+Vq62f/DLzaBHCyheQCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T07:02:58.900135Z","bundle_sha256":"a7c35d1afd596347f6c8c6df624ba35990c11428c7b2444578856fd8a65047fc"}}