{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:HWHHFPQIADHRXYVFQMWPIM7EX4","short_pith_number":"pith:HWHHFPQI","canonical_record":{"source":{"id":"1806.00862","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-06-03T19:39:48Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"4233cb60107b6d3faae6fa7e9816ba94bd2050ed9c1a81efbf23cc09480d6759","abstract_canon_sha256":"33322ce5fd838a7ad9f760db98ce0fb8ee26940beb73f3c93836bab0bb98727d"},"schema_version":"1.0"},"canonical_sha256":"3d8e72be0800cf1be2a5832cf433e4bf00e9f4a0a13484f42b9bc07f2b7ed00e","source":{"kind":"arxiv","id":"1806.00862","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.00862","created_at":"2026-05-17T23:43:43Z"},{"alias_kind":"arxiv_version","alias_value":"1806.00862v2","created_at":"2026-05-17T23:43:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.00862","created_at":"2026-05-17T23:43:43Z"},{"alias_kind":"pith_short_12","alias_value":"HWHHFPQIADHR","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HWHHFPQIADHRXYVF","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HWHHFPQI","created_at":"2026-05-18T12:32:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:HWHHFPQIADHRXYVFQMWPIM7EX4","target":"record","payload":{"canonical_record":{"source":{"id":"1806.00862","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-06-03T19:39:48Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"4233cb60107b6d3faae6fa7e9816ba94bd2050ed9c1a81efbf23cc09480d6759","abstract_canon_sha256":"33322ce5fd838a7ad9f760db98ce0fb8ee26940beb73f3c93836bab0bb98727d"},"schema_version":"1.0"},"canonical_sha256":"3d8e72be0800cf1be2a5832cf433e4bf00e9f4a0a13484f42b9bc07f2b7ed00e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:43.221991Z","signature_b64":"by3nwJwCe+rDtA/H7IxCn0Gl+QVZuAf+39QusGp/O0pbwgQ976k897O3oEWfFBFJ95uZQmwejAk615j9fcj5Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d8e72be0800cf1be2a5832cf433e4bf00e9f4a0a13484f42b9bc07f2b7ed00e","last_reissued_at":"2026-05-17T23:43:43.221278Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:43.221278Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.00862","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":"2026-05-17T23:43:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H7dtAF+lYHIj4adXKlSwetoFVmFDNJR61yKpMgV/ONWA4pdNy5Yu085OddCi5eQ0P0r2N4Kf7deVlueDNS61Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T15:49:42.928907Z"},"content_sha256":"01ab91a8b79509a3b3e2adca137f31c017978b78bf5a7f48f3ce8e410b15aad1","schema_version":"1.0","event_id":"sha256:01ab91a8b79509a3b3e2adca137f31c017978b78bf5a7f48f3ce8e410b15aad1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:HWHHFPQIADHRXYVFQMWPIM7EX4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Granular beads in a vibrating, quasi two-dimensional cell: The true shape of the effective pair potential","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"cond-mat.soft","authors_text":"Gustavo M. Rodr\\'iguez-Li\\~n\\'an, Marco Heinen","submitted_at":"2018-06-03T19:39:48Z","abstract_excerpt":"Steady-state pair correlations between inelastic granular beads in a vertically shaken, quasi two-dimensional cell can be mapped onto the particle correlations in a truly two-dimensional reference fluid in thermodynamic equilibrium. Using Granular Dynamics simulations and Iterative Ornstein--Zernike Inversion, we demonstrate that this mapping applies in a wide range of particle packing fractions and restitution coefficients, and that the conservative reference particle interactions are simpler than it has been reported earlier. The effective potential appears to be a smooth, concave function o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.00862","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":"2026-05-17T23:43:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"se3NPnokqzfvA10EpQSTnFktO/c94fURPcL9LQa+cymKYT4OJOVj4s0lCYOW8sqmqscCiuzU0cBuBUR/XkXtCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T15:49:42.929618Z"},"content_sha256":"546b9ab0c3795469f2c267c15786ccd468e963bbeb37f87ab6241bd6e3062dd1","schema_version":"1.0","event_id":"sha256:546b9ab0c3795469f2c267c15786ccd468e963bbeb37f87ab6241bd6e3062dd1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HWHHFPQIADHRXYVFQMWPIM7EX4/bundle.json","state_url":"https://pith.science/pith/HWHHFPQIADHRXYVFQMWPIM7EX4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HWHHFPQIADHRXYVFQMWPIM7EX4/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":"2026-06-09T15:49:42Z","links":{"resolver":"https://pith.science/pith/HWHHFPQIADHRXYVFQMWPIM7EX4","bundle":"https://pith.science/pith/HWHHFPQIADHRXYVFQMWPIM7EX4/bundle.json","state":"https://pith.science/pith/HWHHFPQIADHRXYVFQMWPIM7EX4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HWHHFPQIADHRXYVFQMWPIM7EX4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:HWHHFPQIADHRXYVFQMWPIM7EX4","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":"33322ce5fd838a7ad9f760db98ce0fb8ee26940beb73f3c93836bab0bb98727d","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-06-03T19:39:48Z","title_canon_sha256":"4233cb60107b6d3faae6fa7e9816ba94bd2050ed9c1a81efbf23cc09480d6759"},"schema_version":"1.0","source":{"id":"1806.00862","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.00862","created_at":"2026-05-17T23:43:43Z"},{"alias_kind":"arxiv_version","alias_value":"1806.00862v2","created_at":"2026-05-17T23:43:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.00862","created_at":"2026-05-17T23:43:43Z"},{"alias_kind":"pith_short_12","alias_value":"HWHHFPQIADHR","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_16","alias_value":"HWHHFPQIADHRXYVF","created_at":"2026-05-18T12:32:28Z"},{"alias_kind":"pith_short_8","alias_value":"HWHHFPQI","created_at":"2026-05-18T12:32:28Z"}],"graph_snapshots":[{"event_id":"sha256:546b9ab0c3795469f2c267c15786ccd468e963bbeb37f87ab6241bd6e3062dd1","target":"graph","created_at":"2026-05-17T23:43:43Z","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":"Steady-state pair correlations between inelastic granular beads in a vertically shaken, quasi two-dimensional cell can be mapped onto the particle correlations in a truly two-dimensional reference fluid in thermodynamic equilibrium. Using Granular Dynamics simulations and Iterative Ornstein--Zernike Inversion, we demonstrate that this mapping applies in a wide range of particle packing fractions and restitution coefficients, and that the conservative reference particle interactions are simpler than it has been reported earlier. The effective potential appears to be a smooth, concave function o","authors_text":"Gustavo M. Rodr\\'iguez-Li\\~n\\'an, Marco Heinen","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-06-03T19:39:48Z","title":"Granular beads in a vibrating, quasi two-dimensional cell: The true shape of the effective pair potential"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.00862","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":"sha256:01ab91a8b79509a3b3e2adca137f31c017978b78bf5a7f48f3ce8e410b15aad1","target":"record","created_at":"2026-05-17T23:43:43Z","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":"33322ce5fd838a7ad9f760db98ce0fb8ee26940beb73f3c93836bab0bb98727d","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-06-03T19:39:48Z","title_canon_sha256":"4233cb60107b6d3faae6fa7e9816ba94bd2050ed9c1a81efbf23cc09480d6759"},"schema_version":"1.0","source":{"id":"1806.00862","kind":"arxiv","version":2}},"canonical_sha256":"3d8e72be0800cf1be2a5832cf433e4bf00e9f4a0a13484f42b9bc07f2b7ed00e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d8e72be0800cf1be2a5832cf433e4bf00e9f4a0a13484f42b9bc07f2b7ed00e","first_computed_at":"2026-05-17T23:43:43.221278Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:43.221278Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"by3nwJwCe+rDtA/H7IxCn0Gl+QVZuAf+39QusGp/O0pbwgQ976k897O3oEWfFBFJ95uZQmwejAk615j9fcj5Bw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:43.221991Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.00862","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:01ab91a8b79509a3b3e2adca137f31c017978b78bf5a7f48f3ce8e410b15aad1","sha256:546b9ab0c3795469f2c267c15786ccd468e963bbeb37f87ab6241bd6e3062dd1"],"state_sha256":"ad24c526fc01571d67bba68780705ccfbf345efb5be6b71de2c5fb21693196bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SbQqOeYjf8pL++NUlkftvnf/FgVvy6t6gfPv0sVUkWtTm4KdMKjqkD02hmrqrQ3bHAU0p63fmMmRE9mD/6SwCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T15:49:42.933869Z","bundle_sha256":"c0c95665f6821362a6522d931e10be1d9069fe821665b3d94311db23689c162a"}}