{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:56EF4NRFSUP3FOQP4ZMXL4GZNV","short_pith_number":"pith:56EF4NRF","canonical_record":{"source":{"id":"1611.03927","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-11-12T01:10:34Z","cross_cats_sorted":[],"title_canon_sha256":"672b7c60a46d88d50e7d1471bd541786aa7050453d8fa888d07443d128cd3c8c","abstract_canon_sha256":"bb61fd460d52884df69dbe819b98a5e509c720678b1fc427b01cc5a9bea45ccb"},"schema_version":"1.0"},"canonical_sha256":"ef885e3625951fb2ba0fe65975f0d96d40033a75bd13d0d3823341df5d4b4880","source":{"kind":"arxiv","id":"1611.03927","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.03927","created_at":"2026-05-18T00:39:01Z"},{"alias_kind":"arxiv_version","alias_value":"1611.03927v1","created_at":"2026-05-18T00:39:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.03927","created_at":"2026-05-18T00:39:01Z"},{"alias_kind":"pith_short_12","alias_value":"56EF4NRFSUP3","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"56EF4NRFSUP3FOQP","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"56EF4NRF","created_at":"2026-05-18T12:29:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:56EF4NRFSUP3FOQP4ZMXL4GZNV","target":"record","payload":{"canonical_record":{"source":{"id":"1611.03927","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-11-12T01:10:34Z","cross_cats_sorted":[],"title_canon_sha256":"672b7c60a46d88d50e7d1471bd541786aa7050453d8fa888d07443d128cd3c8c","abstract_canon_sha256":"bb61fd460d52884df69dbe819b98a5e509c720678b1fc427b01cc5a9bea45ccb"},"schema_version":"1.0"},"canonical_sha256":"ef885e3625951fb2ba0fe65975f0d96d40033a75bd13d0d3823341df5d4b4880","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:39:01.285684Z","signature_b64":"cIkN36NR49U7noByQMoBi5YOKaSogTNbDUHplLtMO4twoW5suU/mHUDaUBqVmVboPJ6UxVqGxCHUD0JBEWkoAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ef885e3625951fb2ba0fe65975f0d96d40033a75bd13d0d3823341df5d4b4880","last_reissued_at":"2026-05-18T00:39:01.285128Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:39:01.285128Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.03927","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":"2026-05-18T00:39:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lJHeaUBsDusHKFZed4+k9Mc7ebqs3eExLDYAG/sWSLQzdCDdfFEwWUFwU7ZL0woHzBG/BeXznEnSOWr2wOhJAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T05:00:50.544056Z"},"content_sha256":"eff27aacffdfdbbb05abcdc332e5036649037293efe201224bf235e916705731","schema_version":"1.0","event_id":"sha256:eff27aacffdfdbbb05abcdc332e5036649037293efe201224bf235e916705731"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:56EF4NRFSUP3FOQP4ZMXL4GZNV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Statistical properties of gravity-driven granular discharge flow under the influence of an obstacle","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"H. Katsuragi, K. Endo","submitted_at":"2016-11-12T01:10:34Z","abstract_excerpt":"Two-dimensional granular discharge flow driven by gravity under the influence of an obstacle is experimentally investigated. A horizontal exit of width $W$ is opened at the bottom of vertical Hele-Shaw cell filled with stainless-steel particles to start the discharge flow. In this experiment, a circular obstacle is placed in front of the exit. Thus, the distance between the exit and obstacle $L$ is also an important parameter. During the discharge, granular-flow state is acquired by a high-speed camera. The bulk discharge-flow rate is also measured by load cell sensors. The obtained high-speed"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.03927","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":"2026-05-18T00:39:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R8svXw7n8TyGkpWOAt2IP9Rwt8AlKC8bmn4dCA0z1iALTwCTCZs1NxGHg9LKC8m3UntsezHIr0kqyna+1eCaAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T05:00:50.544802Z"},"content_sha256":"9341250633486cfa25d71a1e2425249688100e26997bc49a9e01a0da7d87c48e","schema_version":"1.0","event_id":"sha256:9341250633486cfa25d71a1e2425249688100e26997bc49a9e01a0da7d87c48e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/56EF4NRFSUP3FOQP4ZMXL4GZNV/bundle.json","state_url":"https://pith.science/pith/56EF4NRFSUP3FOQP4ZMXL4GZNV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/56EF4NRFSUP3FOQP4ZMXL4GZNV/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":"2026-06-09T05:00:50Z","links":{"resolver":"https://pith.science/pith/56EF4NRFSUP3FOQP4ZMXL4GZNV","bundle":"https://pith.science/pith/56EF4NRFSUP3FOQP4ZMXL4GZNV/bundle.json","state":"https://pith.science/pith/56EF4NRFSUP3FOQP4ZMXL4GZNV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/56EF4NRFSUP3FOQP4ZMXL4GZNV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:56EF4NRFSUP3FOQP4ZMXL4GZNV","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":"bb61fd460d52884df69dbe819b98a5e509c720678b1fc427b01cc5a9bea45ccb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-11-12T01:10:34Z","title_canon_sha256":"672b7c60a46d88d50e7d1471bd541786aa7050453d8fa888d07443d128cd3c8c"},"schema_version":"1.0","source":{"id":"1611.03927","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.03927","created_at":"2026-05-18T00:39:01Z"},{"alias_kind":"arxiv_version","alias_value":"1611.03927v1","created_at":"2026-05-18T00:39:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.03927","created_at":"2026-05-18T00:39:01Z"},{"alias_kind":"pith_short_12","alias_value":"56EF4NRFSUP3","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"56EF4NRFSUP3FOQP","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"56EF4NRF","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:9341250633486cfa25d71a1e2425249688100e26997bc49a9e01a0da7d87c48e","target":"graph","created_at":"2026-05-18T00:39:01Z","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":"Two-dimensional granular discharge flow driven by gravity under the influence of an obstacle is experimentally investigated. A horizontal exit of width $W$ is opened at the bottom of vertical Hele-Shaw cell filled with stainless-steel particles to start the discharge flow. In this experiment, a circular obstacle is placed in front of the exit. Thus, the distance between the exit and obstacle $L$ is also an important parameter. During the discharge, granular-flow state is acquired by a high-speed camera. The bulk discharge-flow rate is also measured by load cell sensors. The obtained high-speed","authors_text":"H. Katsuragi, K. Endo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-11-12T01:10:34Z","title":"Statistical properties of gravity-driven granular discharge flow under the influence of an obstacle"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.03927","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:eff27aacffdfdbbb05abcdc332e5036649037293efe201224bf235e916705731","target":"record","created_at":"2026-05-18T00:39:01Z","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":"bb61fd460d52884df69dbe819b98a5e509c720678b1fc427b01cc5a9bea45ccb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2016-11-12T01:10:34Z","title_canon_sha256":"672b7c60a46d88d50e7d1471bd541786aa7050453d8fa888d07443d128cd3c8c"},"schema_version":"1.0","source":{"id":"1611.03927","kind":"arxiv","version":1}},"canonical_sha256":"ef885e3625951fb2ba0fe65975f0d96d40033a75bd13d0d3823341df5d4b4880","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef885e3625951fb2ba0fe65975f0d96d40033a75bd13d0d3823341df5d4b4880","first_computed_at":"2026-05-18T00:39:01.285128Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:39:01.285128Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cIkN36NR49U7noByQMoBi5YOKaSogTNbDUHplLtMO4twoW5suU/mHUDaUBqVmVboPJ6UxVqGxCHUD0JBEWkoAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:39:01.285684Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.03927","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eff27aacffdfdbbb05abcdc332e5036649037293efe201224bf235e916705731","sha256:9341250633486cfa25d71a1e2425249688100e26997bc49a9e01a0da7d87c48e"],"state_sha256":"75ef5364a8edb8d390344fed0426a0f1ca3aa56255c4fd25232bf5a511e11f76"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"segYo9IYyX9XtVW60VgRQGTiejp/WUu5e6rtILKZ7/stS3WSs8F6iYLTe//JY17van7QvrR8/gosmaXPmI0ADg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T05:00:50.548542Z","bundle_sha256":"2fc082810bb376b0b9f9d201c555239c1b59b273ff940d9290c37844d1c868ab"}}