{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:UO7LKP3DOYHGKHBJ4HW6U4EDOX","short_pith_number":"pith:UO7LKP3D","canonical_record":{"source":{"id":"1312.5854","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2013-12-20T08:52:20Z","cross_cats_sorted":[],"title_canon_sha256":"9bb24eb4ad19ff22a5ae5dc8e62e3a2fd791961994ca3da9d564f29c992c0723","abstract_canon_sha256":"752d79a833971a69a58246cf34fdbd51ad919e4ce18d397257d34d5c7403272f"},"schema_version":"1.0"},"canonical_sha256":"a3beb53f63760e651c29e1edea708375f2226fcc03c869d879c043b04be1266f","source":{"kind":"arxiv","id":"1312.5854","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.5854","created_at":"2026-05-18T02:53:55Z"},{"alias_kind":"arxiv_version","alias_value":"1312.5854v2","created_at":"2026-05-18T02:53:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.5854","created_at":"2026-05-18T02:53:55Z"},{"alias_kind":"pith_short_12","alias_value":"UO7LKP3DOYHG","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"UO7LKP3DOYHGKHBJ","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"UO7LKP3D","created_at":"2026-05-18T12:28:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:UO7LKP3DOYHGKHBJ4HW6U4EDOX","target":"record","payload":{"canonical_record":{"source":{"id":"1312.5854","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2013-12-20T08:52:20Z","cross_cats_sorted":[],"title_canon_sha256":"9bb24eb4ad19ff22a5ae5dc8e62e3a2fd791961994ca3da9d564f29c992c0723","abstract_canon_sha256":"752d79a833971a69a58246cf34fdbd51ad919e4ce18d397257d34d5c7403272f"},"schema_version":"1.0"},"canonical_sha256":"a3beb53f63760e651c29e1edea708375f2226fcc03c869d879c043b04be1266f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:53:55.960444Z","signature_b64":"kGY44BAVggk+DJO+SKUiVwbR/hO5mcXsLIl7Wui3X2IaM5T2LuEQsdAYj+OtfzAhwr20FFXt1FjOWS+Gq632DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a3beb53f63760e651c29e1edea708375f2226fcc03c869d879c043b04be1266f","last_reissued_at":"2026-05-18T02:53:55.959643Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:53:55.959643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1312.5854","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":"2026-05-18T02:53:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hgT/uuzk/S3N/HbB3wh/twL0rUtxgeWnC3JUwQZqcc7BtKdSdFJT22m8ySr02pYzhCxtE6eNYz71F3FJBYcuAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T17:28:09.292852Z"},"content_sha256":"24fa2ab3356bafb1fc2cd4c099c3e45eb36e705763ecf8dc28a21e4923e9a723","schema_version":"1.0","event_id":"sha256:24fa2ab3356bafb1fc2cd4c099c3e45eb36e705763ecf8dc28a21e4923e9a723"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:UO7LKP3DOYHGKHBJ4HW6U4EDOX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Disks in a narrow channel jammed by gravity and centrifuge: profiles of pressure, mass density and entropy density","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.stat-mech","authors_text":"Benjamin Ballnus, Christopher Moore, Dan Liu, Gerhard M\\\"uller, Michael Karbach","submitted_at":"2013-12-20T08:52:20Z","abstract_excerpt":"This work investigates jammed granular matter under conditions that produce heterogeneous mass distributions on a mesoscopic scale. We consider a system of identical disks that are confined to a narrow channel, open at one end and closed off at the other end. The disks are jammed by the local pressure in a gravitational field or centrifuge. All surfaces are hard and frictionless. We calculate the profiles of pressure, mass density, and entropy density on a mesoscopic length scale under the assumption that the jammed states are produced by random agitations of uniform intensity along the channe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.5854","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":"2026-05-18T02:53:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3eoRiphQXxjWRBUrFpF0P5zAh7mkql0YiYb5ubcirx/zQ61yBnLxCcmSIAhaGQBLohEXKqqDju/+Jrfnpwk1Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T17:28:09.293198Z"},"content_sha256":"7c1aab1afe85afb2948325b6077d435ca60c9707b8936d995dbf5e2b3152edf3","schema_version":"1.0","event_id":"sha256:7c1aab1afe85afb2948325b6077d435ca60c9707b8936d995dbf5e2b3152edf3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UO7LKP3DOYHGKHBJ4HW6U4EDOX/bundle.json","state_url":"https://pith.science/pith/UO7LKP3DOYHGKHBJ4HW6U4EDOX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UO7LKP3DOYHGKHBJ4HW6U4EDOX/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":"2026-06-06T17:28:09Z","links":{"resolver":"https://pith.science/pith/UO7LKP3DOYHGKHBJ4HW6U4EDOX","bundle":"https://pith.science/pith/UO7LKP3DOYHGKHBJ4HW6U4EDOX/bundle.json","state":"https://pith.science/pith/UO7LKP3DOYHGKHBJ4HW6U4EDOX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UO7LKP3DOYHGKHBJ4HW6U4EDOX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:UO7LKP3DOYHGKHBJ4HW6U4EDOX","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":"752d79a833971a69a58246cf34fdbd51ad919e4ce18d397257d34d5c7403272f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2013-12-20T08:52:20Z","title_canon_sha256":"9bb24eb4ad19ff22a5ae5dc8e62e3a2fd791961994ca3da9d564f29c992c0723"},"schema_version":"1.0","source":{"id":"1312.5854","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.5854","created_at":"2026-05-18T02:53:55Z"},{"alias_kind":"arxiv_version","alias_value":"1312.5854v2","created_at":"2026-05-18T02:53:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.5854","created_at":"2026-05-18T02:53:55Z"},{"alias_kind":"pith_short_12","alias_value":"UO7LKP3DOYHG","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"UO7LKP3DOYHGKHBJ","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"UO7LKP3D","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:7c1aab1afe85afb2948325b6077d435ca60c9707b8936d995dbf5e2b3152edf3","target":"graph","created_at":"2026-05-18T02:53:55Z","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":"This work investigates jammed granular matter under conditions that produce heterogeneous mass distributions on a mesoscopic scale. We consider a system of identical disks that are confined to a narrow channel, open at one end and closed off at the other end. The disks are jammed by the local pressure in a gravitational field or centrifuge. All surfaces are hard and frictionless. We calculate the profiles of pressure, mass density, and entropy density on a mesoscopic length scale under the assumption that the jammed states are produced by random agitations of uniform intensity along the channe","authors_text":"Benjamin Ballnus, Christopher Moore, Dan Liu, Gerhard M\\\"uller, Michael Karbach","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2013-12-20T08:52:20Z","title":"Disks in a narrow channel jammed by gravity and centrifuge: profiles of pressure, mass density and entropy density"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.5854","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":"sha256:24fa2ab3356bafb1fc2cd4c099c3e45eb36e705763ecf8dc28a21e4923e9a723","target":"record","created_at":"2026-05-18T02:53:55Z","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":"752d79a833971a69a58246cf34fdbd51ad919e4ce18d397257d34d5c7403272f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2013-12-20T08:52:20Z","title_canon_sha256":"9bb24eb4ad19ff22a5ae5dc8e62e3a2fd791961994ca3da9d564f29c992c0723"},"schema_version":"1.0","source":{"id":"1312.5854","kind":"arxiv","version":2}},"canonical_sha256":"a3beb53f63760e651c29e1edea708375f2226fcc03c869d879c043b04be1266f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a3beb53f63760e651c29e1edea708375f2226fcc03c869d879c043b04be1266f","first_computed_at":"2026-05-18T02:53:55.959643Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:53:55.959643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kGY44BAVggk+DJO+SKUiVwbR/hO5mcXsLIl7Wui3X2IaM5T2LuEQsdAYj+OtfzAhwr20FFXt1FjOWS+Gq632DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:53:55.960444Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.5854","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:24fa2ab3356bafb1fc2cd4c099c3e45eb36e705763ecf8dc28a21e4923e9a723","sha256:7c1aab1afe85afb2948325b6077d435ca60c9707b8936d995dbf5e2b3152edf3"],"state_sha256":"38a1676be3bb9cf7811a580d356832d54ec06005f4c0b9305728ec8996c659c3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jBKA1/Pk3IuQuDQA6ZC/6TQ6McdKXiEyCK3lItVpI3I3ESpvh5t0J3Az54odrWjP8XL2XWNkw3ipuWgwZdpBDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T17:28:09.296063Z","bundle_sha256":"86ac5efbd0957d03e5553c7027d7cc2641ae9b2074c8b68fd261715edccf91e4"}}