{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:F7NAW2XRBNUU2BMIVCRE4RUN2P","short_pith_number":"pith:F7NAW2XR","canonical_record":{"source":{"id":"1004.1064","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2010-04-07T12:11:57Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"a545f3ceef835499fd909a1c2b5190f6a14ae0e203152ef71d6acc239e345e6c","abstract_canon_sha256":"3d76483769d50ac20855e303aa1caf4ef5d59867e1b6787c9a84fce64ee9aaf3"},"schema_version":"1.0"},"canonical_sha256":"2fda0b6af10b694d0588a8a24e468dd3fa164b1a7d7554b2b64ab50ef023287a","source":{"kind":"arxiv","id":"1004.1064","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.1064","created_at":"2026-05-18T02:08:13Z"},{"alias_kind":"arxiv_version","alias_value":"1004.1064v1","created_at":"2026-05-18T02:08:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.1064","created_at":"2026-05-18T02:08:13Z"},{"alias_kind":"pith_short_12","alias_value":"F7NAW2XRBNUU","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"F7NAW2XRBNUU2BMI","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"F7NAW2XR","created_at":"2026-05-18T12:26:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:F7NAW2XRBNUU2BMIVCRE4RUN2P","target":"record","payload":{"canonical_record":{"source":{"id":"1004.1064","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2010-04-07T12:11:57Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"a545f3ceef835499fd909a1c2b5190f6a14ae0e203152ef71d6acc239e345e6c","abstract_canon_sha256":"3d76483769d50ac20855e303aa1caf4ef5d59867e1b6787c9a84fce64ee9aaf3"},"schema_version":"1.0"},"canonical_sha256":"2fda0b6af10b694d0588a8a24e468dd3fa164b1a7d7554b2b64ab50ef023287a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:08:13.914342Z","signature_b64":"I5EkefJGLofQefbxqJBFD71KOfGfNJmNX8UgJx4UefbCPuMTYVo9KSNhjAR87Xy7RLbEdG+Q6PYwQk7xYPURAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2fda0b6af10b694d0588a8a24e468dd3fa164b1a7d7554b2b64ab50ef023287a","last_reissued_at":"2026-05-18T02:08:13.913730Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:08:13.913730Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1004.1064","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":"2026-05-18T02:08:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"npuXSVSzucsAHsnCWFQNBciX5Bs+FcveyK68V3drcCi0tEmL+BbDHMYMZDZYx6av7nP0EoUgbMf4XjduHf5YAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:53:31.846385Z"},"content_sha256":"ab4fcfadec896b232607dbc3f4b61133eabf9083ebc9fe39645ef2d5dff980e5","schema_version":"1.0","event_id":"sha256:ab4fcfadec896b232607dbc3f4b61133eabf9083ebc9fe39645ef2d5dff980e5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:F7NAW2XRBNUU2BMIVCRE4RUN2P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effects of patch size and number within a simple model of patchy colloids","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"cond-mat.soft","authors_text":"Achille Giacometti, Francesco Sciortino, Fred Lado, Giorgio Pastore, Julio Largo","submitted_at":"2010-04-07T12:11:57Z","abstract_excerpt":"We report on a computer simulation  and integral equation study of a simple model of patchy spheres, each of whose surfaces is decorated with two opposite attractive caps, as a function of the fraction $\\chi$ of covered attractive surface. The simple model explored --- the two-patch Kern-Frenkel model --- interpolates between a square-well and a hard-sphere potential on changing the coverage $\\chi$. We show that integral equation theory provides quantitative predictions in the entire explored region of temperatures and densities from the square-well limit $\\chi = 1.0$ down to $\\chi \\approx 0.6"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.1064","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":"2026-05-18T02:08:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XPOcJ9MDGqD5hUD8N1g/pKNCbZkAEOOJ63gVPjXqsgsL1PH9D9H8GMppiZajRKFhwaAf25H7pYVD47sEDNfvBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:53:31.846738Z"},"content_sha256":"b2e3924258da2c8a3bbe0697cc65d102b733260346057ec996aa42c66fc923b5","schema_version":"1.0","event_id":"sha256:b2e3924258da2c8a3bbe0697cc65d102b733260346057ec996aa42c66fc923b5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F7NAW2XRBNUU2BMIVCRE4RUN2P/bundle.json","state_url":"https://pith.science/pith/F7NAW2XRBNUU2BMIVCRE4RUN2P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F7NAW2XRBNUU2BMIVCRE4RUN2P/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":"2026-06-02T10:53:31Z","links":{"resolver":"https://pith.science/pith/F7NAW2XRBNUU2BMIVCRE4RUN2P","bundle":"https://pith.science/pith/F7NAW2XRBNUU2BMIVCRE4RUN2P/bundle.json","state":"https://pith.science/pith/F7NAW2XRBNUU2BMIVCRE4RUN2P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F7NAW2XRBNUU2BMIVCRE4RUN2P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:F7NAW2XRBNUU2BMIVCRE4RUN2P","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":"3d76483769d50ac20855e303aa1caf4ef5d59867e1b6787c9a84fce64ee9aaf3","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2010-04-07T12:11:57Z","title_canon_sha256":"a545f3ceef835499fd909a1c2b5190f6a14ae0e203152ef71d6acc239e345e6c"},"schema_version":"1.0","source":{"id":"1004.1064","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.1064","created_at":"2026-05-18T02:08:13Z"},{"alias_kind":"arxiv_version","alias_value":"1004.1064v1","created_at":"2026-05-18T02:08:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.1064","created_at":"2026-05-18T02:08:13Z"},{"alias_kind":"pith_short_12","alias_value":"F7NAW2XRBNUU","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"F7NAW2XRBNUU2BMI","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"F7NAW2XR","created_at":"2026-05-18T12:26:06Z"}],"graph_snapshots":[{"event_id":"sha256:b2e3924258da2c8a3bbe0697cc65d102b733260346057ec996aa42c66fc923b5","target":"graph","created_at":"2026-05-18T02:08:13Z","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":"We report on a computer simulation  and integral equation study of a simple model of patchy spheres, each of whose surfaces is decorated with two opposite attractive caps, as a function of the fraction $\\chi$ of covered attractive surface. The simple model explored --- the two-patch Kern-Frenkel model --- interpolates between a square-well and a hard-sphere potential on changing the coverage $\\chi$. We show that integral equation theory provides quantitative predictions in the entire explored region of temperatures and densities from the square-well limit $\\chi = 1.0$ down to $\\chi \\approx 0.6","authors_text":"Achille Giacometti, Francesco Sciortino, Fred Lado, Giorgio Pastore, Julio Largo","cross_cats":["physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2010-04-07T12:11:57Z","title":"Effects of patch size and number within a simple model of patchy colloids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.1064","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:ab4fcfadec896b232607dbc3f4b61133eabf9083ebc9fe39645ef2d5dff980e5","target":"record","created_at":"2026-05-18T02:08:13Z","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":"3d76483769d50ac20855e303aa1caf4ef5d59867e1b6787c9a84fce64ee9aaf3","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2010-04-07T12:11:57Z","title_canon_sha256":"a545f3ceef835499fd909a1c2b5190f6a14ae0e203152ef71d6acc239e345e6c"},"schema_version":"1.0","source":{"id":"1004.1064","kind":"arxiv","version":1}},"canonical_sha256":"2fda0b6af10b694d0588a8a24e468dd3fa164b1a7d7554b2b64ab50ef023287a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2fda0b6af10b694d0588a8a24e468dd3fa164b1a7d7554b2b64ab50ef023287a","first_computed_at":"2026-05-18T02:08:13.913730Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:08:13.913730Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I5EkefJGLofQefbxqJBFD71KOfGfNJmNX8UgJx4UefbCPuMTYVo9KSNhjAR87Xy7RLbEdG+Q6PYwQk7xYPURAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:08:13.914342Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.1064","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ab4fcfadec896b232607dbc3f4b61133eabf9083ebc9fe39645ef2d5dff980e5","sha256:b2e3924258da2c8a3bbe0697cc65d102b733260346057ec996aa42c66fc923b5"],"state_sha256":"1ff27fb9275adcd00b0674a8822ca06a4e231d1e64146a74e67d8aee0f6a7080"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iFV7T85iUHpAgEpwzxM7afEzzsqFKczwLVxpKwZyvXU0WjnC5/woH+eF9kMtFudFgR+0QTnP9/UZiJRZxFpkCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T10:53:31.848661Z","bundle_sha256":"e4a5d62250e784503efe0dac33d3bc5e178dd0ea771790d3a8822b7dcfe93221"}}