{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:HCPFZOQQZURQWZSCKWUW42A5IL","short_pith_number":"pith:HCPFZOQQ","canonical_record":{"source":{"id":"1808.04252","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.TO","submitted_at":"2018-08-10T01:52:20Z","cross_cats_sorted":["physics.med-ph"],"title_canon_sha256":"aba12a478a0efcc0fd1e8a2c53d5ed24f00c5c4e62a7abfcdf3c19656a57dfc0","abstract_canon_sha256":"8b4ae45f9f179a754022ca6ffc37497b9eb333bf811457e41060817af6f7923c"},"schema_version":"1.0"},"canonical_sha256":"389e5cba10cd230b664255a96e681d42da442a3dfbb54dbd929b2bf018fdf0a1","source":{"kind":"arxiv","id":"1808.04252","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.04252","created_at":"2026-05-18T00:06:50Z"},{"alias_kind":"arxiv_version","alias_value":"1808.04252v2","created_at":"2026-05-18T00:06:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.04252","created_at":"2026-05-18T00:06:50Z"},{"alias_kind":"pith_short_12","alias_value":"HCPFZOQQZURQ","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HCPFZOQQZURQWZSC","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HCPFZOQQ","created_at":"2026-05-18T12:32:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:HCPFZOQQZURQWZSCKWUW42A5IL","target":"record","payload":{"canonical_record":{"source":{"id":"1808.04252","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.TO","submitted_at":"2018-08-10T01:52:20Z","cross_cats_sorted":["physics.med-ph"],"title_canon_sha256":"aba12a478a0efcc0fd1e8a2c53d5ed24f00c5c4e62a7abfcdf3c19656a57dfc0","abstract_canon_sha256":"8b4ae45f9f179a754022ca6ffc37497b9eb333bf811457e41060817af6f7923c"},"schema_version":"1.0"},"canonical_sha256":"389e5cba10cd230b664255a96e681d42da442a3dfbb54dbd929b2bf018fdf0a1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:06:50.444012Z","signature_b64":"xcR61UPvMBvSxKmO5lXR6b6wQgeaQx9B3Sw2cQOYtXgylEcQz2OiIuOz7vERlcFCYO8Zngtj2w4mCPGAyeCDCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"389e5cba10cd230b664255a96e681d42da442a3dfbb54dbd929b2bf018fdf0a1","last_reissued_at":"2026-05-18T00:06:50.443290Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:06:50.443290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.04252","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":"2026-05-18T00:06:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W7q6OhD2UV5JlNBZhHKp2RTLEk0/AQPt+PbobCGFRjFd5Azm0G+bIp4MXsE0uMXWiYHkZww63C5tLvJMneGPAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T14:37:58.490550Z"},"content_sha256":"6c121c3c577c9a19ffffe085a0ac12b3a35bb07f074c476ee09be83b88e400e3","schema_version":"1.0","event_id":"sha256:6c121c3c577c9a19ffffe085a0ac12b3a35bb07f074c476ee09be83b88e400e3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:HCPFZOQQZURQWZSCKWUW42A5IL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Structural Model For Simulating the Mechanical Response of Fingertip to Tactile Stimuli","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.med-ph"],"primary_cat":"q-bio.TO","authors_text":"A. A. Dehkordi, A. T. Golpaygani, Roozbeh Khodambashi, S. Najarian","submitted_at":"2018-08-10T01:52:20Z","abstract_excerpt":"Response of the mechanoreceptors underlying the skin is greatly affected by its mechanical properties. Knowledge of this response is essential in designing artificial tactile devices such as minimally invasive tools and tactile displays. The purpose of present research is to simulate the biomechanics of tactile sensation during indentation tests. A two-dimensional finite element model has been used for the analysis incorporating the essential anatomical structures of a finger (i.e., skin, subcutaneous tissue, bone, and nail). The skin and subcutaneous tissue are assumed to be hyperelastic and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.04252","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":"2026-05-18T00:06:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4W0S9ZsCl8UZ43n6XAhnj4pnyS5tGVlliE1B1p1aOlS5jh6cOXUciNPnHDNWIP5I4C3c9yUlY63IaCNfZ7cYBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T14:37:58.490909Z"},"content_sha256":"6bc4dbd9565f63856333fc660dbf88070e9357d389755e792be6cd4b14f30011","schema_version":"1.0","event_id":"sha256:6bc4dbd9565f63856333fc660dbf88070e9357d389755e792be6cd4b14f30011"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HCPFZOQQZURQWZSCKWUW42A5IL/bundle.json","state_url":"https://pith.science/pith/HCPFZOQQZURQWZSCKWUW42A5IL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HCPFZOQQZURQWZSCKWUW42A5IL/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":"2026-06-25T14:37:58Z","links":{"resolver":"https://pith.science/pith/HCPFZOQQZURQWZSCKWUW42A5IL","bundle":"https://pith.science/pith/HCPFZOQQZURQWZSCKWUW42A5IL/bundle.json","state":"https://pith.science/pith/HCPFZOQQZURQWZSCKWUW42A5IL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HCPFZOQQZURQWZSCKWUW42A5IL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:HCPFZOQQZURQWZSCKWUW42A5IL","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":"8b4ae45f9f179a754022ca6ffc37497b9eb333bf811457e41060817af6f7923c","cross_cats_sorted":["physics.med-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.TO","submitted_at":"2018-08-10T01:52:20Z","title_canon_sha256":"aba12a478a0efcc0fd1e8a2c53d5ed24f00c5c4e62a7abfcdf3c19656a57dfc0"},"schema_version":"1.0","source":{"id":"1808.04252","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.04252","created_at":"2026-05-18T00:06:50Z"},{"alias_kind":"arxiv_version","alias_value":"1808.04252v2","created_at":"2026-05-18T00:06:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.04252","created_at":"2026-05-18T00:06:50Z"},{"alias_kind":"pith_short_12","alias_value":"HCPFZOQQZURQ","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HCPFZOQQZURQWZSC","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HCPFZOQQ","created_at":"2026-05-18T12:32:28Z"}],"graph_snapshots":[{"event_id":"sha256:6bc4dbd9565f63856333fc660dbf88070e9357d389755e792be6cd4b14f30011","target":"graph","created_at":"2026-05-18T00:06:50Z","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":"Response of the mechanoreceptors underlying the skin is greatly affected by its mechanical properties. Knowledge of this response is essential in designing artificial tactile devices such as minimally invasive tools and tactile displays. The purpose of present research is to simulate the biomechanics of tactile sensation during indentation tests. A two-dimensional finite element model has been used for the analysis incorporating the essential anatomical structures of a finger (i.e., skin, subcutaneous tissue, bone, and nail). The skin and subcutaneous tissue are assumed to be hyperelastic and ","authors_text":"A. A. Dehkordi, A. T. Golpaygani, Roozbeh Khodambashi, S. Najarian","cross_cats":["physics.med-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.TO","submitted_at":"2018-08-10T01:52:20Z","title":"A Structural Model For Simulating the Mechanical Response of Fingertip to Tactile Stimuli"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.04252","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":"sha256:6c121c3c577c9a19ffffe085a0ac12b3a35bb07f074c476ee09be83b88e400e3","target":"record","created_at":"2026-05-18T00:06:50Z","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":"8b4ae45f9f179a754022ca6ffc37497b9eb333bf811457e41060817af6f7923c","cross_cats_sorted":["physics.med-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.TO","submitted_at":"2018-08-10T01:52:20Z","title_canon_sha256":"aba12a478a0efcc0fd1e8a2c53d5ed24f00c5c4e62a7abfcdf3c19656a57dfc0"},"schema_version":"1.0","source":{"id":"1808.04252","kind":"arxiv","version":2}},"canonical_sha256":"389e5cba10cd230b664255a96e681d42da442a3dfbb54dbd929b2bf018fdf0a1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"389e5cba10cd230b664255a96e681d42da442a3dfbb54dbd929b2bf018fdf0a1","first_computed_at":"2026-05-18T00:06:50.443290Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:50.443290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xcR61UPvMBvSxKmO5lXR6b6wQgeaQx9B3Sw2cQOYtXgylEcQz2OiIuOz7vERlcFCYO8Zngtj2w4mCPGAyeCDCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:50.444012Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.04252","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6c121c3c577c9a19ffffe085a0ac12b3a35bb07f074c476ee09be83b88e400e3","sha256:6bc4dbd9565f63856333fc660dbf88070e9357d389755e792be6cd4b14f30011"],"state_sha256":"de2a95140db0f36afe2b17a41dd834af797d0a703329f36138b78a4787d246cd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KgYbujJUFHSsaRNPKKphE6a8Y0qhq+/pqikK0bSgrWhSuM1iE5hNFsIpwJtsPa1qgyphzpXbUDezEBlE88QeDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T14:37:58.493218Z","bundle_sha256":"d3dcbc25119d9b0ba398e1b502d085fcdbf828d5714b152e84cb40688d4f5d9c"}}