{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:5HYRQC5W6XGACS6A2UVH5Z63DQ","short_pith_number":"pith:5HYRQC5W","canonical_record":{"source":{"id":"cond-mat/0108256","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"cond-mat.soft","submitted_at":"2001-08-15T22:36:05Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"ef396f2fa6431dac86e411fd7e94b919c208dd1e16a02b73cb9310844e8dff8e","abstract_canon_sha256":"67083cc4649bea72808ab90bcedda18a7353fbf50d31cebdd4a63e7a3530e7c3"},"schema_version":"1.0"},"canonical_sha256":"e9f1180bb6f5cc014bc0d52a7ee7db1c1607c97ce3f62bc047f13bbf14c57f8b","source":{"kind":"arxiv","id":"cond-mat/0108256","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0108256","created_at":"2026-05-18T01:07:02Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0108256v3","created_at":"2026-05-18T01:07:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0108256","created_at":"2026-05-18T01:07:02Z"},{"alias_kind":"pith_short_12","alias_value":"5HYRQC5W6XGA","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"5HYRQC5W6XGACS6A","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"5HYRQC5W","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:5HYRQC5W6XGACS6A2UVH5Z63DQ","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0108256","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"cond-mat.soft","submitted_at":"2001-08-15T22:36:05Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"ef396f2fa6431dac86e411fd7e94b919c208dd1e16a02b73cb9310844e8dff8e","abstract_canon_sha256":"67083cc4649bea72808ab90bcedda18a7353fbf50d31cebdd4a63e7a3530e7c3"},"schema_version":"1.0"},"canonical_sha256":"e9f1180bb6f5cc014bc0d52a7ee7db1c1607c97ce3f62bc047f13bbf14c57f8b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:02.437830Z","signature_b64":"itozC1rf/5N5ROfZDqbXdbXHhJHzA7ZpHlRSm9NHPsslgSkHuZagV7ZdhP8KTGwr3A0nyWNyzO0dz42znPvaDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e9f1180bb6f5cc014bc0d52a7ee7db1c1607c97ce3f62bc047f13bbf14c57f8b","last_reissued_at":"2026-05-18T01:07:02.436879Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:02.436879Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0108256","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:07:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hjjl5DytlG0re7SjtaXAkj3QUWCIB6OvfxZR37xHy7oLFqwi7tzuZuirlFVBTJ/JonO4LhytKYCo9k1jLm/ZDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:11:55.921931Z"},"content_sha256":"5da574b520d7e9083169faf240a3bf8b9c25d0fad9148ffb636a912b9179d2bb","schema_version":"1.0","event_id":"sha256:5da574b520d7e9083169faf240a3bf8b9c25d0fad9148ffb636a912b9179d2bb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:5HYRQC5W6XGACS6A2UVH5Z63DQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurements of Grain Motion in a Dense, Three-Dimensional Granular Fluid","license":"","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"cond-mat.soft","authors_text":"Chao Huan, D. Candela, R. L. Walsworth, R. W. Mair, Xiaoyu Yang","submitted_at":"2001-08-15T22:36:05Z","abstract_excerpt":"We have used an NMR technique to measure the short-time, three-dimensional displacement of grains in a system of mustard seeds vibrated vertically at 15g. The technique averages over a time interval in which the grains move ballistically, giving a direct measurement of the granular temperature profile. The dense, lower portion of the sample is well described by a recent hydrodynamic theory for inelastic hard spheres. Near the free upper surface the mean free path is longer than the particle diameter and the hydrodynamic description fails."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0108256","kind":"arxiv","version":3},"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":"2026-05-18T01:07:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hti2vioIvSylx1m0MMmb5P5Y2UVWBZiLc+lvP1fmWfh97G45UyYMrqrNlvOdLEIe4uyEWh1i6QbhJvsgya69Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:11:55.922587Z"},"content_sha256":"77360a3bcee99188962935c8a8df5b8d178b505b8b38fd102d7052d1a8b97750","schema_version":"1.0","event_id":"sha256:77360a3bcee99188962935c8a8df5b8d178b505b8b38fd102d7052d1a8b97750"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5HYRQC5W6XGACS6A2UVH5Z63DQ/bundle.json","state_url":"https://pith.science/pith/5HYRQC5W6XGACS6A2UVH5Z63DQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5HYRQC5W6XGACS6A2UVH5Z63DQ/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":"2026-05-26T09:11:55Z","links":{"resolver":"https://pith.science/pith/5HYRQC5W6XGACS6A2UVH5Z63DQ","bundle":"https://pith.science/pith/5HYRQC5W6XGACS6A2UVH5Z63DQ/bundle.json","state":"https://pith.science/pith/5HYRQC5W6XGACS6A2UVH5Z63DQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5HYRQC5W6XGACS6A2UVH5Z63DQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:5HYRQC5W6XGACS6A2UVH5Z63DQ","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":"67083cc4649bea72808ab90bcedda18a7353fbf50d31cebdd4a63e7a3530e7c3","cross_cats_sorted":["cond-mat.stat-mech"],"license":"","primary_cat":"cond-mat.soft","submitted_at":"2001-08-15T22:36:05Z","title_canon_sha256":"ef396f2fa6431dac86e411fd7e94b919c208dd1e16a02b73cb9310844e8dff8e"},"schema_version":"1.0","source":{"id":"cond-mat/0108256","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0108256","created_at":"2026-05-18T01:07:02Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0108256v3","created_at":"2026-05-18T01:07:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0108256","created_at":"2026-05-18T01:07:02Z"},{"alias_kind":"pith_short_12","alias_value":"5HYRQC5W6XGA","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"5HYRQC5W6XGACS6A","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"5HYRQC5W","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:77360a3bcee99188962935c8a8df5b8d178b505b8b38fd102d7052d1a8b97750","target":"graph","created_at":"2026-05-18T01:07:02Z","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 have used an NMR technique to measure the short-time, three-dimensional displacement of grains in a system of mustard seeds vibrated vertically at 15g. The technique averages over a time interval in which the grains move ballistically, giving a direct measurement of the granular temperature profile. The dense, lower portion of the sample is well described by a recent hydrodynamic theory for inelastic hard spheres. Near the free upper surface the mean free path is longer than the particle diameter and the hydrodynamic description fails.","authors_text":"Chao Huan, D. Candela, R. L. Walsworth, R. W. Mair, Xiaoyu Yang","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"","primary_cat":"cond-mat.soft","submitted_at":"2001-08-15T22:36:05Z","title":"Measurements of Grain Motion in a Dense, Three-Dimensional Granular Fluid"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0108256","kind":"arxiv","version":3},"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":"sha256:5da574b520d7e9083169faf240a3bf8b9c25d0fad9148ffb636a912b9179d2bb","target":"record","created_at":"2026-05-18T01:07:02Z","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":"67083cc4649bea72808ab90bcedda18a7353fbf50d31cebdd4a63e7a3530e7c3","cross_cats_sorted":["cond-mat.stat-mech"],"license":"","primary_cat":"cond-mat.soft","submitted_at":"2001-08-15T22:36:05Z","title_canon_sha256":"ef396f2fa6431dac86e411fd7e94b919c208dd1e16a02b73cb9310844e8dff8e"},"schema_version":"1.0","source":{"id":"cond-mat/0108256","kind":"arxiv","version":3}},"canonical_sha256":"e9f1180bb6f5cc014bc0d52a7ee7db1c1607c97ce3f62bc047f13bbf14c57f8b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e9f1180bb6f5cc014bc0d52a7ee7db1c1607c97ce3f62bc047f13bbf14c57f8b","first_computed_at":"2026-05-18T01:07:02.436879Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:02.436879Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"itozC1rf/5N5ROfZDqbXdbXHhJHzA7ZpHlRSm9NHPsslgSkHuZagV7ZdhP8KTGwr3A0nyWNyzO0dz42znPvaDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:02.437830Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0108256","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5da574b520d7e9083169faf240a3bf8b9c25d0fad9148ffb636a912b9179d2bb","sha256:77360a3bcee99188962935c8a8df5b8d178b505b8b38fd102d7052d1a8b97750"],"state_sha256":"0b941ecd1b648a56d75b1345819e7a45ed91289a688ffe093d7acc2d4371228d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WtZhAOGWyW42P99zY01YZeNlh/k51cvKJ40ahb4KeaUYxy0ZeyWaM+7pa2ZKmPxquBPyteg3yY/jko0rWnRcCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T09:11:55.926189Z","bundle_sha256":"9fd1816dbfa36868f4901a057d215d48472d6443ff14b79bc1cbc40d15ffe663"}}