{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:4TPL3FC5S6JUYHUJ4MJI77U66D","short_pith_number":"pith:4TPL3FC5","canonical_record":{"source":{"id":"cond-mat/0204080","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2002-04-03T14:22:41Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"6deb15e1a6c7ab0690b405f44986c234e90521e283f5a71c660c9f9116664ad1","abstract_canon_sha256":"325bf7c03edd8d5aeb5d684f653c01e708ca7b7146ae58c5e4974eebb18d8229"},"schema_version":"1.0"},"canonical_sha256":"e4debd945d97934c1e89e3128ffe9ef0d909f185b6249f697e309647eaaae6ae","source":{"kind":"arxiv","id":"cond-mat/0204080","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0204080","created_at":"2026-05-18T01:40:03Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0204080v1","created_at":"2026-05-18T01:40:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0204080","created_at":"2026-05-18T01:40:03Z"},{"alias_kind":"pith_short_12","alias_value":"4TPL3FC5S6JU","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"4TPL3FC5S6JUYHUJ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"4TPL3FC5","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:4TPL3FC5S6JUYHUJ4MJI77U66D","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0204080","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2002-04-03T14:22:41Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"6deb15e1a6c7ab0690b405f44986c234e90521e283f5a71c660c9f9116664ad1","abstract_canon_sha256":"325bf7c03edd8d5aeb5d684f653c01e708ca7b7146ae58c5e4974eebb18d8229"},"schema_version":"1.0"},"canonical_sha256":"e4debd945d97934c1e89e3128ffe9ef0d909f185b6249f697e309647eaaae6ae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:03.721484Z","signature_b64":"kQn0wcH+9c3L/m44ztDpQIfiwTpOvmDWpuBp5xGSlOb+xYiMHpWpLa38VUIHvTdzRRyBloohFhcCqt/wlptcDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4debd945d97934c1e89e3128ffe9ef0d909f185b6249f697e309647eaaae6ae","last_reissued_at":"2026-05-18T01:40:03.720869Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:03.720869Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0204080","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":"2026-05-18T01:40:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kj+MCaGZds3Aglc7HMCq3ry9BuF9FCLsuYGofReWgOfWloN6hoWIOGkvuSzNUyXYoBaVafpwGhgXwnPTb9lZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:35:19.855751Z"},"content_sha256":"b55d6c0af07716a2c1db96291f452a0d2c94d5fc3f07ded4d071ce8e8ec103e5","schema_version":"1.0","event_id":"sha256:b55d6c0af07716a2c1db96291f452a0d2c94d5fc3f07ded4d071ce8e8ec103e5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:4TPL3FC5S6JUYHUJ4MJI77U66D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Size segregation and convection","license":"","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Hans J. Herrmann, Thorsten Poeschel","submitted_at":"2002-04-03T14:22:41Z","abstract_excerpt":"The size segregation of granular materials in a vibrating container is investigated using Molecular Dynamics. We find that the rising of larger particles is accompanied by the existence of convection cells even in the case of the lowest possible frequencies. The convection can, however, also be triggered by the larger particle itself. The possibility of rising through this mechanism strongly depends on the depth of the larger particle."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0204080","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":"2026-05-18T01:40:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9t1iHu0BXgB1pJkczhPVwNkjIY2j0V9uz6bjUy1SqyVhT8wOpJunIcZ0kFef1SF+73eJf+zMVCmUnpkGyg1TDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:35:19.856095Z"},"content_sha256":"3e4dd6fc99b2b0384dd1f25ed0ef0d42e0e5b579dd2219f1932ed459d208a240","schema_version":"1.0","event_id":"sha256:3e4dd6fc99b2b0384dd1f25ed0ef0d42e0e5b579dd2219f1932ed459d208a240"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4TPL3FC5S6JUYHUJ4MJI77U66D/bundle.json","state_url":"https://pith.science/pith/4TPL3FC5S6JUYHUJ4MJI77U66D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4TPL3FC5S6JUYHUJ4MJI77U66D/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":"2026-05-28T00:35:19Z","links":{"resolver":"https://pith.science/pith/4TPL3FC5S6JUYHUJ4MJI77U66D","bundle":"https://pith.science/pith/4TPL3FC5S6JUYHUJ4MJI77U66D/bundle.json","state":"https://pith.science/pith/4TPL3FC5S6JUYHUJ4MJI77U66D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4TPL3FC5S6JUYHUJ4MJI77U66D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:4TPL3FC5S6JUYHUJ4MJI77U66D","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":"325bf7c03edd8d5aeb5d684f653c01e708ca7b7146ae58c5e4974eebb18d8229","cross_cats_sorted":["cond-mat.stat-mech"],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2002-04-03T14:22:41Z","title_canon_sha256":"6deb15e1a6c7ab0690b405f44986c234e90521e283f5a71c660c9f9116664ad1"},"schema_version":"1.0","source":{"id":"cond-mat/0204080","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0204080","created_at":"2026-05-18T01:40:03Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0204080v1","created_at":"2026-05-18T01:40:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0204080","created_at":"2026-05-18T01:40:03Z"},{"alias_kind":"pith_short_12","alias_value":"4TPL3FC5S6JU","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"4TPL3FC5S6JUYHUJ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"4TPL3FC5","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:3e4dd6fc99b2b0384dd1f25ed0ef0d42e0e5b579dd2219f1932ed459d208a240","target":"graph","created_at":"2026-05-18T01:40:03Z","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":"The size segregation of granular materials in a vibrating container is investigated using Molecular Dynamics. We find that the rising of larger particles is accompanied by the existence of convection cells even in the case of the lowest possible frequencies. The convection can, however, also be triggered by the larger particle itself. The possibility of rising through this mechanism strongly depends on the depth of the larger particle.","authors_text":"Hans J. Herrmann, Thorsten Poeschel","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2002-04-03T14:22:41Z","title":"Size segregation and convection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0204080","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:b55d6c0af07716a2c1db96291f452a0d2c94d5fc3f07ded4d071ce8e8ec103e5","target":"record","created_at":"2026-05-18T01:40:03Z","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":"325bf7c03edd8d5aeb5d684f653c01e708ca7b7146ae58c5e4974eebb18d8229","cross_cats_sorted":["cond-mat.stat-mech"],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2002-04-03T14:22:41Z","title_canon_sha256":"6deb15e1a6c7ab0690b405f44986c234e90521e283f5a71c660c9f9116664ad1"},"schema_version":"1.0","source":{"id":"cond-mat/0204080","kind":"arxiv","version":1}},"canonical_sha256":"e4debd945d97934c1e89e3128ffe9ef0d909f185b6249f697e309647eaaae6ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e4debd945d97934c1e89e3128ffe9ef0d909f185b6249f697e309647eaaae6ae","first_computed_at":"2026-05-18T01:40:03.720869Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:03.720869Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kQn0wcH+9c3L/m44ztDpQIfiwTpOvmDWpuBp5xGSlOb+xYiMHpWpLa38VUIHvTdzRRyBloohFhcCqt/wlptcDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:03.721484Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0204080","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b55d6c0af07716a2c1db96291f452a0d2c94d5fc3f07ded4d071ce8e8ec103e5","sha256:3e4dd6fc99b2b0384dd1f25ed0ef0d42e0e5b579dd2219f1932ed459d208a240"],"state_sha256":"e2cf61104ce0e73d1b11623fecc6f91ed469cb30b5d666c93679c15b993f05f7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9UKYcjScWpILxQzK6ijoYINW05IZgyRWutItFsxXvze9llIAd/ZE3tfP6HvukDpyOZv4rfhoPKTP0r1vPSaKBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T00:35:19.858051Z","bundle_sha256":"fef20c4eed1afbb2e8ab70cda772a10d0de05a178a60d6d908cd871515ae972e"}}