{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:HQTTONHKLMNNRCHGT67GSLP62F","short_pith_number":"pith:HQTTONHK","canonical_record":{"source":{"id":"1801.01441","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-01-04T16:56:59Z","cross_cats_sorted":["q-bio.NC"],"title_canon_sha256":"56f8e3e061f362144339a5f25fb0dc41000a51b76c74a87d76ea7f631ba83e58","abstract_canon_sha256":"08194f1e65ff254448ec62d9746bbbd23257c521963e448a969146502fbb7d25"},"schema_version":"1.0"},"canonical_sha256":"3c273734ea5b1ad888e69fbe692dfed142119280a056ac2ebc75a8550b21876a","source":{"kind":"arxiv","id":"1801.01441","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.01441","created_at":"2026-05-18T00:18:41Z"},{"alias_kind":"arxiv_version","alias_value":"1801.01441v2","created_at":"2026-05-18T00:18:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.01441","created_at":"2026-05-18T00:18:41Z"},{"alias_kind":"pith_short_12","alias_value":"HQTTONHKLMNN","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HQTTONHKLMNNRCHG","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HQTTONHK","created_at":"2026-05-18T12:32:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:HQTTONHKLMNNRCHGT67GSLP62F","target":"record","payload":{"canonical_record":{"source":{"id":"1801.01441","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-01-04T16:56:59Z","cross_cats_sorted":["q-bio.NC"],"title_canon_sha256":"56f8e3e061f362144339a5f25fb0dc41000a51b76c74a87d76ea7f631ba83e58","abstract_canon_sha256":"08194f1e65ff254448ec62d9746bbbd23257c521963e448a969146502fbb7d25"},"schema_version":"1.0"},"canonical_sha256":"3c273734ea5b1ad888e69fbe692dfed142119280a056ac2ebc75a8550b21876a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:41.037647Z","signature_b64":"9Bv/0as1xpvtr4vxNFwF5niPxOeYZpnbVZZvaAAukcZlst0gJL00gRaqw9i+zh+HI1hmo8fM+iQG46f8CPfOAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3c273734ea5b1ad888e69fbe692dfed142119280a056ac2ebc75a8550b21876a","last_reissued_at":"2026-05-18T00:18:41.036877Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:41.036877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.01441","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":"2026-05-18T00:18:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HOE1V40ky06r2KFngm9QsQ9v07mhq2Ih6iQX6cdjYKNGKwthKFwuCFLI7oQQsFUNV8mYsAeuCHKhl69zSk4DBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T00:59:40.709231Z"},"content_sha256":"b87fd518dd609539f64776b9970789560b34998d8e9b619316ed724839dab3b8","schema_version":"1.0","event_id":"sha256:b87fd518dd609539f64776b9970789560b34998d8e9b619316ed724839dab3b8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:HQTTONHKLMNNRCHGT67GSLP62F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Higher physical fitness levels are associated with less language decline in healthy ageing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["q-bio.NC"],"primary_cat":"stat.AP","authors_text":"A. E. Milner, C.V. Burley, K. Segaert, L. Wheeldon, M. Ryan, Pieter Segaert, S.J.E. Lucas","submitted_at":"2018-01-04T16:56:59Z","abstract_excerpt":"Healthy ageing is associated with decline in cognitive abilities such as language. Aerobic fitness has been shown to ameliorate decline in some cognitive domains, but the potential benefits for language have not been examined. In a cross-sectional sample, we investigated the relationship between aerobic fitness and tip-of-the-tongue states. These are among the most frequent cognitive failures in healthy older adults and occur when a speaker knows a word but is unable to produce it. We found that healthy older adults indeed experience more tip-of-the-tongue states than young adults. Importantly"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.01441","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":"2026-05-18T00:18:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hbMV66Q8QNargqZ2ifvKCyLSQNMUzXLUwirDCmI8iUX1/QmKcKbU0OPXv7dpNVimfYDbAjIZ0HaAZJHpVq3rDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T00:59:40.709605Z"},"content_sha256":"12899c0dcdefe7c833a651e8bd7d146e7af847afe9f3fa9d825fc2919330820c","schema_version":"1.0","event_id":"sha256:12899c0dcdefe7c833a651e8bd7d146e7af847afe9f3fa9d825fc2919330820c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HQTTONHKLMNNRCHGT67GSLP62F/bundle.json","state_url":"https://pith.science/pith/HQTTONHKLMNNRCHGT67GSLP62F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HQTTONHKLMNNRCHGT67GSLP62F/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":"2026-06-02T00:59:40Z","links":{"resolver":"https://pith.science/pith/HQTTONHKLMNNRCHGT67GSLP62F","bundle":"https://pith.science/pith/HQTTONHKLMNNRCHGT67GSLP62F/bundle.json","state":"https://pith.science/pith/HQTTONHKLMNNRCHGT67GSLP62F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HQTTONHKLMNNRCHGT67GSLP62F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:HQTTONHKLMNNRCHGT67GSLP62F","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":"08194f1e65ff254448ec62d9746bbbd23257c521963e448a969146502fbb7d25","cross_cats_sorted":["q-bio.NC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-01-04T16:56:59Z","title_canon_sha256":"56f8e3e061f362144339a5f25fb0dc41000a51b76c74a87d76ea7f631ba83e58"},"schema_version":"1.0","source":{"id":"1801.01441","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.01441","created_at":"2026-05-18T00:18:41Z"},{"alias_kind":"arxiv_version","alias_value":"1801.01441v2","created_at":"2026-05-18T00:18:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.01441","created_at":"2026-05-18T00:18:41Z"},{"alias_kind":"pith_short_12","alias_value":"HQTTONHKLMNN","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HQTTONHKLMNNRCHG","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HQTTONHK","created_at":"2026-05-18T12:32:28Z"}],"graph_snapshots":[{"event_id":"sha256:12899c0dcdefe7c833a651e8bd7d146e7af847afe9f3fa9d825fc2919330820c","target":"graph","created_at":"2026-05-18T00:18:41Z","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":"Healthy ageing is associated with decline in cognitive abilities such as language. Aerobic fitness has been shown to ameliorate decline in some cognitive domains, but the potential benefits for language have not been examined. In a cross-sectional sample, we investigated the relationship between aerobic fitness and tip-of-the-tongue states. These are among the most frequent cognitive failures in healthy older adults and occur when a speaker knows a word but is unable to produce it. We found that healthy older adults indeed experience more tip-of-the-tongue states than young adults. Importantly","authors_text":"A. E. Milner, C.V. Burley, K. Segaert, L. Wheeldon, M. Ryan, Pieter Segaert, S.J.E. Lucas","cross_cats":["q-bio.NC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-01-04T16:56:59Z","title":"Higher physical fitness levels are associated with less language decline in healthy ageing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.01441","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:b87fd518dd609539f64776b9970789560b34998d8e9b619316ed724839dab3b8","target":"record","created_at":"2026-05-18T00:18:41Z","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":"08194f1e65ff254448ec62d9746bbbd23257c521963e448a969146502fbb7d25","cross_cats_sorted":["q-bio.NC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-01-04T16:56:59Z","title_canon_sha256":"56f8e3e061f362144339a5f25fb0dc41000a51b76c74a87d76ea7f631ba83e58"},"schema_version":"1.0","source":{"id":"1801.01441","kind":"arxiv","version":2}},"canonical_sha256":"3c273734ea5b1ad888e69fbe692dfed142119280a056ac2ebc75a8550b21876a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3c273734ea5b1ad888e69fbe692dfed142119280a056ac2ebc75a8550b21876a","first_computed_at":"2026-05-18T00:18:41.036877Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:41.036877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Bv/0as1xpvtr4vxNFwF5niPxOeYZpnbVZZvaAAukcZlst0gJL00gRaqw9i+zh+HI1hmo8fM+iQG46f8CPfOAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:41.037647Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.01441","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b87fd518dd609539f64776b9970789560b34998d8e9b619316ed724839dab3b8","sha256:12899c0dcdefe7c833a651e8bd7d146e7af847afe9f3fa9d825fc2919330820c"],"state_sha256":"33fac423ca5b2cc81cd3e07fa471a50d0849af631919a8a9ab792ff60ddb5c82"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LURAUvcUcaEwek3F+iq6MHG731Gdx45Po+QjKtat1K9t6O3EKbDFxku73xCDDxAi8yNN5c/PcLR7+fycgcYHCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T00:59:40.711634Z","bundle_sha256":"26374a89cb292459c83989c874cae89c6f21afb525d8dffefe9a778f233873db"}}