{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:JS3K6SIEQQE2FJTUFJTRQWUQ6V","short_pith_number":"pith:JS3K6SIE","canonical_record":{"source":{"id":"2507.09098","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2025-07-12T00:46:11Z","cross_cats_sorted":["physics.data-an"],"title_canon_sha256":"5b717b7de0e35c440db9f8297617db06c1a41153efdcb7f69180b75b5a85c33e","abstract_canon_sha256":"0333282748216938f33ea2c8ae00c03deb4a4c71a846d614ed6890ffc76239cf"},"schema_version":"1.0"},"canonical_sha256":"4cb6af49048409a2a6742a67185a90f56b56c7b75675318e1bb324990141d506","source":{"kind":"arxiv","id":"2507.09098","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.09098","created_at":"2026-05-21T01:04:15Z"},{"alias_kind":"arxiv_version","alias_value":"2507.09098v5","created_at":"2026-05-21T01:04:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.09098","created_at":"2026-05-21T01:04:15Z"},{"alias_kind":"pith_short_12","alias_value":"JS3K6SIEQQE2","created_at":"2026-05-21T01:04:15Z"},{"alias_kind":"pith_short_16","alias_value":"JS3K6SIEQQE2FJTU","created_at":"2026-05-21T01:04:15Z"},{"alias_kind":"pith_short_8","alias_value":"JS3K6SIE","created_at":"2026-05-21T01:04:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:JS3K6SIEQQE2FJTUFJTRQWUQ6V","target":"record","payload":{"canonical_record":{"source":{"id":"2507.09098","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2025-07-12T00:46:11Z","cross_cats_sorted":["physics.data-an"],"title_canon_sha256":"5b717b7de0e35c440db9f8297617db06c1a41153efdcb7f69180b75b5a85c33e","abstract_canon_sha256":"0333282748216938f33ea2c8ae00c03deb4a4c71a846d614ed6890ffc76239cf"},"schema_version":"1.0"},"canonical_sha256":"4cb6af49048409a2a6742a67185a90f56b56c7b75675318e1bb324990141d506","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-21T01:04:15.158784Z","signature_b64":"ZvVaBe5w+mYUF1ZIdffiSMIK3RBWXrJymsRcPldzayNl0xZyhWEVb9DyXLS9ujuznK1sY2i9nMn7MVtyiBzLCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4cb6af49048409a2a6742a67185a90f56b56c7b75675318e1bb324990141d506","last_reissued_at":"2026-05-21T01:04:15.158028Z","signature_status":"signed_v1","first_computed_at":"2026-05-21T01:04:15.158028Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.09098","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-21T01:04:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z4HCl+yvMwURmYe/jGn7Jaa8BRwTWTEBW6ld3cJev/DE5+xLEEQYyacmpSpIawPlYh2gM/9JqLg/Xu/hXTjoAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T12:38:08.562918Z"},"content_sha256":"bcb4816ea041943cedfd80263190966234937f55e2aba9674bc7e08e0c5446fd","schema_version":"1.0","event_id":"sha256:bcb4816ea041943cedfd80263190966234937f55e2aba9674bc7e08e0c5446fd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:JS3K6SIEQQE2FJTUFJTRQWUQ6V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Linear Acceleration Is a Primary Risk Factor for Concussion and a Target for Prevention","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.data-an"],"primary_cat":"physics.med-ph","authors_text":"David B. Camarillo, Gerald A. Grant, James W. Hickey, Jessica A. Towns, Jillian E. Urban, Joel D. Stitzel, Michael M. Zeineh, Nicholas J. Cecchi, N. Stewart Pritchard, Spencer S.H. Roberts, Stuart J. McDonald, William T. O'Brien","submitted_at":"2025-07-12T00:46:11Z","abstract_excerpt":"Head impacts can cause concussion, but the precise biomechanical conditions that produce injury remain uncertain. Rotational acceleration has long been posited as the primary cause and has guided concussion prevention strategies. Using instrumented mouthguards to record head kinematics of diagnosed concussions, we directly tested this hypothesis and found that linear acceleration predicted injury with greater precision than rotational acceleration, while rotational velocity provided additional predictive value. Injury risk functions derived from these measurements indicated substantial predict"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.09098","kind":"arxiv","version":5},"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/2507.09098/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":"2026-05-21T01:04:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EI+gjB2EHem+wchkmiucjuR21HmdGduqlUsyFNWWbpqa5TYdB8hziaKdAc5T1T+XbvFEaRmbTl30ac9y07s3DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T12:38:08.563286Z"},"content_sha256":"db5953e624c261b3fce0401456405b2d41f310555965474d7fcbd6c4e8223b68","schema_version":"1.0","event_id":"sha256:db5953e624c261b3fce0401456405b2d41f310555965474d7fcbd6c4e8223b68"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JS3K6SIEQQE2FJTUFJTRQWUQ6V/bundle.json","state_url":"https://pith.science/pith/JS3K6SIEQQE2FJTUFJTRQWUQ6V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JS3K6SIEQQE2FJTUFJTRQWUQ6V/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":"2026-06-27T12:38:08Z","links":{"resolver":"https://pith.science/pith/JS3K6SIEQQE2FJTUFJTRQWUQ6V","bundle":"https://pith.science/pith/JS3K6SIEQQE2FJTUFJTRQWUQ6V/bundle.json","state":"https://pith.science/pith/JS3K6SIEQQE2FJTUFJTRQWUQ6V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JS3K6SIEQQE2FJTUFJTRQWUQ6V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:JS3K6SIEQQE2FJTUFJTRQWUQ6V","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":"0333282748216938f33ea2c8ae00c03deb4a4c71a846d614ed6890ffc76239cf","cross_cats_sorted":["physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2025-07-12T00:46:11Z","title_canon_sha256":"5b717b7de0e35c440db9f8297617db06c1a41153efdcb7f69180b75b5a85c33e"},"schema_version":"1.0","source":{"id":"2507.09098","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.09098","created_at":"2026-05-21T01:04:15Z"},{"alias_kind":"arxiv_version","alias_value":"2507.09098v5","created_at":"2026-05-21T01:04:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.09098","created_at":"2026-05-21T01:04:15Z"},{"alias_kind":"pith_short_12","alias_value":"JS3K6SIEQQE2","created_at":"2026-05-21T01:04:15Z"},{"alias_kind":"pith_short_16","alias_value":"JS3K6SIEQQE2FJTU","created_at":"2026-05-21T01:04:15Z"},{"alias_kind":"pith_short_8","alias_value":"JS3K6SIE","created_at":"2026-05-21T01:04:15Z"}],"graph_snapshots":[{"event_id":"sha256:db5953e624c261b3fce0401456405b2d41f310555965474d7fcbd6c4e8223b68","target":"graph","created_at":"2026-05-21T01:04:15Z","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/2507.09098/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Head impacts can cause concussion, but the precise biomechanical conditions that produce injury remain uncertain. Rotational acceleration has long been posited as the primary cause and has guided concussion prevention strategies. Using instrumented mouthguards to record head kinematics of diagnosed concussions, we directly tested this hypothesis and found that linear acceleration predicted injury with greater precision than rotational acceleration, while rotational velocity provided additional predictive value. Injury risk functions derived from these measurements indicated substantial predict","authors_text":"David B. Camarillo, Gerald A. Grant, James W. Hickey, Jessica A. Towns, Jillian E. Urban, Joel D. Stitzel, Michael M. Zeineh, Nicholas J. Cecchi, N. Stewart Pritchard, Spencer S.H. Roberts, Stuart J. McDonald, William T. O'Brien","cross_cats":["physics.data-an"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2025-07-12T00:46:11Z","title":"Linear Acceleration Is a Primary Risk Factor for Concussion and a Target for Prevention"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.09098","kind":"arxiv","version":5},"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:bcb4816ea041943cedfd80263190966234937f55e2aba9674bc7e08e0c5446fd","target":"record","created_at":"2026-05-21T01:04:15Z","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":"0333282748216938f33ea2c8ae00c03deb4a4c71a846d614ed6890ffc76239cf","cross_cats_sorted":["physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2025-07-12T00:46:11Z","title_canon_sha256":"5b717b7de0e35c440db9f8297617db06c1a41153efdcb7f69180b75b5a85c33e"},"schema_version":"1.0","source":{"id":"2507.09098","kind":"arxiv","version":5}},"canonical_sha256":"4cb6af49048409a2a6742a67185a90f56b56c7b75675318e1bb324990141d506","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4cb6af49048409a2a6742a67185a90f56b56c7b75675318e1bb324990141d506","first_computed_at":"2026-05-21T01:04:15.158028Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-21T01:04:15.158028Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZvVaBe5w+mYUF1ZIdffiSMIK3RBWXrJymsRcPldzayNl0xZyhWEVb9DyXLS9ujuznK1sY2i9nMn7MVtyiBzLCg==","signature_status":"signed_v1","signed_at":"2026-05-21T01:04:15.158784Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.09098","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bcb4816ea041943cedfd80263190966234937f55e2aba9674bc7e08e0c5446fd","sha256:db5953e624c261b3fce0401456405b2d41f310555965474d7fcbd6c4e8223b68"],"state_sha256":"2b03e340126557448ced2a8301c06f46d131c1f724d3b5017900d4edf10896ac"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3JV4nkGoAZt9xrOOtgoek68rbaoPFGVRnEs1Mps3FUL8r/bmMtWnY5nN7EAvMs2wHFtu8YTRaDfr1mctg9eJBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T12:38:08.565510Z","bundle_sha256":"abc7838c7ac6e074461c631322bcebf4fb58f64fbbfcd742f152e2c2b8230f69"}}