{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:DK473MN5MJ2BQUKWXJ2Q5662N6","short_pith_number":"pith:DK473MN5","canonical_record":{"source":{"id":"1008.4493","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2010-08-26T12:35:25Z","cross_cats_sorted":[],"title_canon_sha256":"6e4fc42c56d76230d35b8fb5ee65db0eea57bb9b831d3acbd92007556981a0c8","abstract_canon_sha256":"776154d1ad496537cf6d2f7e423c08c4cb6642a52fc14abd5ebc37dbc20c1a21"},"schema_version":"1.0"},"canonical_sha256":"1ab9fdb1bd6274185156ba750efbda6f82481f754f8c8f1fbbcfaac9823ec319","source":{"kind":"arxiv","id":"1008.4493","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.4493","created_at":"2026-05-18T04:41:45Z"},{"alias_kind":"arxiv_version","alias_value":"1008.4493v1","created_at":"2026-05-18T04:41:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.4493","created_at":"2026-05-18T04:41:45Z"},{"alias_kind":"pith_short_12","alias_value":"DK473MN5MJ2B","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"DK473MN5MJ2BQUKW","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"DK473MN5","created_at":"2026-05-18T12:26:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:DK473MN5MJ2BQUKWXJ2Q5662N6","target":"record","payload":{"canonical_record":{"source":{"id":"1008.4493","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2010-08-26T12:35:25Z","cross_cats_sorted":[],"title_canon_sha256":"6e4fc42c56d76230d35b8fb5ee65db0eea57bb9b831d3acbd92007556981a0c8","abstract_canon_sha256":"776154d1ad496537cf6d2f7e423c08c4cb6642a52fc14abd5ebc37dbc20c1a21"},"schema_version":"1.0"},"canonical_sha256":"1ab9fdb1bd6274185156ba750efbda6f82481f754f8c8f1fbbcfaac9823ec319","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:41:45.218148Z","signature_b64":"awMJMADzlN24jyVPlUEQ82YDIB4J5PPiZqvjNqweU79v1wzhIwbA3XatV1A31sR/i4ZIdpn8BxeuCFzEs4urDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1ab9fdb1bd6274185156ba750efbda6f82481f754f8c8f1fbbcfaac9823ec319","last_reissued_at":"2026-05-18T04:41:45.217738Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:41:45.217738Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1008.4493","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:41:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mcwCftvivr3oNBdz4rUxnoee1B8yL1KcnsN2j6GXo2xe9+mOTQgE8Qro1AJJTrOW5ENmBxLzbMScuTKK1WNbCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T13:13:31.522589Z"},"content_sha256":"0ececb92f63c8a29411e919122700076c00f024e6042afc40763bc061556b758","schema_version":"1.0","event_id":"sha256:0ececb92f63c8a29411e919122700076c00f024e6042afc40763bc061556b758"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:DK473MN5MJ2BQUKWXJ2Q5662N6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Rolling friction for hard cylinder and sphere on viscoelastic solid","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"B.N.J. Persson","submitted_at":"2010-08-26T12:35:25Z","abstract_excerpt":"We calculate the friction force acting on a hard cylinder or spherical ball rolling on a flat surface of a viscoelastic solid. The rolling friction coefficient depends non-linearly on the normal load and the rolling velocity. For a cylinder rolling on a viscoelastic solid characterized by a single relaxation time Hunter has obtained an exact result for the rolling friction, and our result is in very good agreement with his result for this limiting case. The theoretical results are also in good agreement with experiments of Greenwood and Tabor. We suggest that measurements of rolling friction o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.4493","kind":"arxiv","version":1},"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":"2026-05-18T04:41:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VonXau2+IqyT9uBNzouceFamTwKrmWQ2s0m8LoLhhXMBlrKDkXrk1oQK3viSqOII61d4IkUMLs7EzN/Gfys3Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T13:13:31.522937Z"},"content_sha256":"3b6542bc775c7d1f4ae298d4c3f94509e7937ca96624f660da537a65c2b6ddc2","schema_version":"1.0","event_id":"sha256:3b6542bc775c7d1f4ae298d4c3f94509e7937ca96624f660da537a65c2b6ddc2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DK473MN5MJ2BQUKWXJ2Q5662N6/bundle.json","state_url":"https://pith.science/pith/DK473MN5MJ2BQUKWXJ2Q5662N6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DK473MN5MJ2BQUKWXJ2Q5662N6/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":"2026-06-04T13:13:31Z","links":{"resolver":"https://pith.science/pith/DK473MN5MJ2BQUKWXJ2Q5662N6","bundle":"https://pith.science/pith/DK473MN5MJ2BQUKWXJ2Q5662N6/bundle.json","state":"https://pith.science/pith/DK473MN5MJ2BQUKWXJ2Q5662N6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DK473MN5MJ2BQUKWXJ2Q5662N6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:DK473MN5MJ2BQUKWXJ2Q5662N6","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":"776154d1ad496537cf6d2f7e423c08c4cb6642a52fc14abd5ebc37dbc20c1a21","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2010-08-26T12:35:25Z","title_canon_sha256":"6e4fc42c56d76230d35b8fb5ee65db0eea57bb9b831d3acbd92007556981a0c8"},"schema_version":"1.0","source":{"id":"1008.4493","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.4493","created_at":"2026-05-18T04:41:45Z"},{"alias_kind":"arxiv_version","alias_value":"1008.4493v1","created_at":"2026-05-18T04:41:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.4493","created_at":"2026-05-18T04:41:45Z"},{"alias_kind":"pith_short_12","alias_value":"DK473MN5MJ2B","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"DK473MN5MJ2BQUKW","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"DK473MN5","created_at":"2026-05-18T12:26:06Z"}],"graph_snapshots":[{"event_id":"sha256:3b6542bc775c7d1f4ae298d4c3f94509e7937ca96624f660da537a65c2b6ddc2","target":"graph","created_at":"2026-05-18T04:41:45Z","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":"We calculate the friction force acting on a hard cylinder or spherical ball rolling on a flat surface of a viscoelastic solid. The rolling friction coefficient depends non-linearly on the normal load and the rolling velocity. For a cylinder rolling on a viscoelastic solid characterized by a single relaxation time Hunter has obtained an exact result for the rolling friction, and our result is in very good agreement with his result for this limiting case. The theoretical results are also in good agreement with experiments of Greenwood and Tabor. We suggest that measurements of rolling friction o","authors_text":"B.N.J. Persson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2010-08-26T12:35:25Z","title":"Rolling friction for hard cylinder and sphere on viscoelastic solid"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.4493","kind":"arxiv","version":1},"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":"sha256:0ececb92f63c8a29411e919122700076c00f024e6042afc40763bc061556b758","target":"record","created_at":"2026-05-18T04:41:45Z","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":"776154d1ad496537cf6d2f7e423c08c4cb6642a52fc14abd5ebc37dbc20c1a21","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2010-08-26T12:35:25Z","title_canon_sha256":"6e4fc42c56d76230d35b8fb5ee65db0eea57bb9b831d3acbd92007556981a0c8"},"schema_version":"1.0","source":{"id":"1008.4493","kind":"arxiv","version":1}},"canonical_sha256":"1ab9fdb1bd6274185156ba750efbda6f82481f754f8c8f1fbbcfaac9823ec319","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1ab9fdb1bd6274185156ba750efbda6f82481f754f8c8f1fbbcfaac9823ec319","first_computed_at":"2026-05-18T04:41:45.217738Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:41:45.217738Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"awMJMADzlN24jyVPlUEQ82YDIB4J5PPiZqvjNqweU79v1wzhIwbA3XatV1A31sR/i4ZIdpn8BxeuCFzEs4urDw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:41:45.218148Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.4493","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0ececb92f63c8a29411e919122700076c00f024e6042afc40763bc061556b758","sha256:3b6542bc775c7d1f4ae298d4c3f94509e7937ca96624f660da537a65c2b6ddc2"],"state_sha256":"0423b59349ffea817f04ccc6e8b7379c70e795ed7257716a5f11efc36006ff85"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ztCxKgydL4EImpHn69pQf0Zpk6yCHvFuDeZbTfJmgry8vq5iVA/EKMG7CTkUXwCNZwWRwveQVOT0xgKtYgKRCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T13:13:31.524955Z","bundle_sha256":"e081bac070328db06b67e095f7b32e2246059ee0b02282319467d5c4a330b1cc"}}