{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:EGF33WMA5G4XCEGIUUJPDR7AZO","short_pith_number":"pith:EGF33WMA","canonical_record":{"source":{"id":"1103.0166","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2011-03-01T13:42:18Z","cross_cats_sorted":[],"title_canon_sha256":"aa4bdf389516f81f35032b3829f5ba79fa26f656cf87a4b393aad99ae048c870","abstract_canon_sha256":"dc1d1426688aa5d998d8c104b07e8d2190ced05040205e538b16f115ebeeaf5d"},"schema_version":"1.0"},"canonical_sha256":"218bbdd980e9b97110c8a512f1c7e0cba14374c6c39d77b6106206accabf3aaf","source":{"kind":"arxiv","id":"1103.0166","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.0166","created_at":"2026-05-18T02:03:01Z"},{"alias_kind":"arxiv_version","alias_value":"1103.0166v2","created_at":"2026-05-18T02:03:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.0166","created_at":"2026-05-18T02:03:01Z"},{"alias_kind":"pith_short_12","alias_value":"EGF33WMA5G4X","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EGF33WMA5G4XCEGI","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EGF33WMA","created_at":"2026-05-18T12:26:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:EGF33WMA5G4XCEGIUUJPDR7AZO","target":"record","payload":{"canonical_record":{"source":{"id":"1103.0166","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2011-03-01T13:42:18Z","cross_cats_sorted":[],"title_canon_sha256":"aa4bdf389516f81f35032b3829f5ba79fa26f656cf87a4b393aad99ae048c870","abstract_canon_sha256":"dc1d1426688aa5d998d8c104b07e8d2190ced05040205e538b16f115ebeeaf5d"},"schema_version":"1.0"},"canonical_sha256":"218bbdd980e9b97110c8a512f1c7e0cba14374c6c39d77b6106206accabf3aaf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:01.730349Z","signature_b64":"LHeF74bslbwDlDGEhfvDeFRWolHQZAauGJS+vd9atXq0Y2MVgwKhH0AOORCguiQYzSBSEZSPsGdmuyfn5f+eCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"218bbdd980e9b97110c8a512f1c7e0cba14374c6c39d77b6106206accabf3aaf","last_reissued_at":"2026-05-18T02:03:01.729722Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:01.729722Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1103.0166","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":"2026-05-18T02:03:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C8uWjPQg0tepX4uNtbF9ksNCMT10E5V/Ub27dvz3SNoffevHF83lribZbCCkJOalEkqZ0qBS+mdpVqdSQYXlBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T08:36:53.869228Z"},"content_sha256":"342d46ec08e293b9883c9c0986c027f29c4385ade9de09ccc3784408189a5476","schema_version":"1.0","event_id":"sha256:342d46ec08e293b9883c9c0986c027f29c4385ade9de09ccc3784408189a5476"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:EGF33WMA5G4XCEGIUUJPDR7AZO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Growing non-equilibrium length in granular fluids: from experiment to fluctuating hydrodynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.stat-mech","authors_text":"Alessandro Sarracino, Andrea Puglisi, Dario Villamaina, Giacomo Gradenigo","submitted_at":"2011-03-01T13:42:18Z","abstract_excerpt":"Velocity correlations in a 2D granular fluid are studied in experiments and numerical simulations. The transverse component of the velocity structure factor reveals two well defined energy scales, associated with the external \"bath temperature\" $T_b$ and with the internal granular one, $T_g<T_b$, relevant at large and small wavelengths respectively. Experimental and numerical data are discussed within a fluctuating hydrodynamics model, which allows one to define and measure a non-equilibrium coherence length $\\xi$, growing with density, that characterizes order in the velocity field."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.0166","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":"2026-05-18T02:03:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WTD+0bDELL15d4eEYyuxJNyjdMXEBXNOPVGc+w/YeoVIOnNWHcZqxOKLuO3y9N1LJrmvudxadL595h5A135SAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T08:36:53.869584Z"},"content_sha256":"9bba01978fc11a77f9ebe51500b38cc04d2e7898a90696c68f2fbd0bd424c3ec","schema_version":"1.0","event_id":"sha256:9bba01978fc11a77f9ebe51500b38cc04d2e7898a90696c68f2fbd0bd424c3ec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EGF33WMA5G4XCEGIUUJPDR7AZO/bundle.json","state_url":"https://pith.science/pith/EGF33WMA5G4XCEGIUUJPDR7AZO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EGF33WMA5G4XCEGIUUJPDR7AZO/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":"2026-06-07T08:36:53Z","links":{"resolver":"https://pith.science/pith/EGF33WMA5G4XCEGIUUJPDR7AZO","bundle":"https://pith.science/pith/EGF33WMA5G4XCEGIUUJPDR7AZO/bundle.json","state":"https://pith.science/pith/EGF33WMA5G4XCEGIUUJPDR7AZO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EGF33WMA5G4XCEGIUUJPDR7AZO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:EGF33WMA5G4XCEGIUUJPDR7AZO","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":"dc1d1426688aa5d998d8c104b07e8d2190ced05040205e538b16f115ebeeaf5d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2011-03-01T13:42:18Z","title_canon_sha256":"aa4bdf389516f81f35032b3829f5ba79fa26f656cf87a4b393aad99ae048c870"},"schema_version":"1.0","source":{"id":"1103.0166","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.0166","created_at":"2026-05-18T02:03:01Z"},{"alias_kind":"arxiv_version","alias_value":"1103.0166v2","created_at":"2026-05-18T02:03:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.0166","created_at":"2026-05-18T02:03:01Z"},{"alias_kind":"pith_short_12","alias_value":"EGF33WMA5G4X","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EGF33WMA5G4XCEGI","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EGF33WMA","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:9bba01978fc11a77f9ebe51500b38cc04d2e7898a90696c68f2fbd0bd424c3ec","target":"graph","created_at":"2026-05-18T02:03:01Z","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":"Velocity correlations in a 2D granular fluid are studied in experiments and numerical simulations. The transverse component of the velocity structure factor reveals two well defined energy scales, associated with the external \"bath temperature\" $T_b$ and with the internal granular one, $T_g<T_b$, relevant at large and small wavelengths respectively. Experimental and numerical data are discussed within a fluctuating hydrodynamics model, which allows one to define and measure a non-equilibrium coherence length $\\xi$, growing with density, that characterizes order in the velocity field.","authors_text":"Alessandro Sarracino, Andrea Puglisi, Dario Villamaina, Giacomo Gradenigo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2011-03-01T13:42:18Z","title":"Growing non-equilibrium length in granular fluids: from experiment to fluctuating hydrodynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.0166","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":"sha256:342d46ec08e293b9883c9c0986c027f29c4385ade9de09ccc3784408189a5476","target":"record","created_at":"2026-05-18T02:03:01Z","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":"dc1d1426688aa5d998d8c104b07e8d2190ced05040205e538b16f115ebeeaf5d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2011-03-01T13:42:18Z","title_canon_sha256":"aa4bdf389516f81f35032b3829f5ba79fa26f656cf87a4b393aad99ae048c870"},"schema_version":"1.0","source":{"id":"1103.0166","kind":"arxiv","version":2}},"canonical_sha256":"218bbdd980e9b97110c8a512f1c7e0cba14374c6c39d77b6106206accabf3aaf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"218bbdd980e9b97110c8a512f1c7e0cba14374c6c39d77b6106206accabf3aaf","first_computed_at":"2026-05-18T02:03:01.729722Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:01.729722Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LHeF74bslbwDlDGEhfvDeFRWolHQZAauGJS+vd9atXq0Y2MVgwKhH0AOORCguiQYzSBSEZSPsGdmuyfn5f+eCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:01.730349Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.0166","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:342d46ec08e293b9883c9c0986c027f29c4385ade9de09ccc3784408189a5476","sha256:9bba01978fc11a77f9ebe51500b38cc04d2e7898a90696c68f2fbd0bd424c3ec"],"state_sha256":"1e534131561a3c363c077061cb8e8b45ef5956328a6fa0f975aa8468a29a8d54"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wlR81hsXoqO6EEskGXkeaHUYMP4cfjdjss4snunrdrCWxPei3uUZ5GTg6h2qFjc4vjwPe0M9IVA89ZhwXdNcCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T08:36:53.871446Z","bundle_sha256":"8978a1350e1b955a6bb549ebc442b07d7b650534cbcb4e03b011597cf703edd1"}}