{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:K2GMIBUWHKEXVEUZ67FMT4NOI6","short_pith_number":"pith:K2GMIBUW","canonical_record":{"source":{"id":"1311.4781","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-11-19T15:25:43Z","cross_cats_sorted":[],"title_canon_sha256":"9592b2112dcc3e32b3095e4d231268887e68dbbc5032904fd99115112a847cf6","abstract_canon_sha256":"c156f22d998e5c37780032e05ca0870158b67fc4a3d92fa1e33a4108b7d5697d"},"schema_version":"1.0"},"canonical_sha256":"568cc406963a897a9299f7cac9f1ae47ba4f7e6cc7508fb6cd7bb52938d508bc","source":{"kind":"arxiv","id":"1311.4781","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.4781","created_at":"2026-05-18T01:46:23Z"},{"alias_kind":"arxiv_version","alias_value":"1311.4781v1","created_at":"2026-05-18T01:46:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.4781","created_at":"2026-05-18T01:46:23Z"},{"alias_kind":"pith_short_12","alias_value":"K2GMIBUWHKEX","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"K2GMIBUWHKEXVEUZ","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"K2GMIBUW","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:K2GMIBUWHKEXVEUZ67FMT4NOI6","target":"record","payload":{"canonical_record":{"source":{"id":"1311.4781","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-11-19T15:25:43Z","cross_cats_sorted":[],"title_canon_sha256":"9592b2112dcc3e32b3095e4d231268887e68dbbc5032904fd99115112a847cf6","abstract_canon_sha256":"c156f22d998e5c37780032e05ca0870158b67fc4a3d92fa1e33a4108b7d5697d"},"schema_version":"1.0"},"canonical_sha256":"568cc406963a897a9299f7cac9f1ae47ba4f7e6cc7508fb6cd7bb52938d508bc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:46:23.034856Z","signature_b64":"m6jnnM7uo1k9Y95OTsp1mrLocZksoojdryd4qL8yI+reSqRmeyybZkQ0FW3yPk7nbFdfoHjfIn6qjUE2C1a1Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"568cc406963a897a9299f7cac9f1ae47ba4f7e6cc7508fb6cd7bb52938d508bc","last_reissued_at":"2026-05-18T01:46:23.034135Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:46:23.034135Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.4781","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":"2026-05-18T01:46:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q7t4deojBkarbp5bcyDeHZJFjJhkGv9BVP6pkdvimLuXoriNR/p9FnFg5rxWR/mXQUIw2Y6h6YJhsI6WA8SSBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T23:43:19.525840Z"},"content_sha256":"7bdadc0e1af411f448f48d1215dad705d7e035d5f5eb7dd16fbfef49f28f4e4e","schema_version":"1.0","event_id":"sha256:7bdadc0e1af411f448f48d1215dad705d7e035d5f5eb7dd16fbfef49f28f4e4e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:K2GMIBUWHKEXVEUZ67FMT4NOI6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The effect of boundary adaptivity on hexagonal ordering and bistability in circularly confined quasi hard discs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"C. Patrick Royall, Erdal C. O\\u{g}uz, Hartmut L\\\"owen, Ian Williams, Paul Bartlett, Robert L. Jack","submitted_at":"2013-11-19T15:25:43Z","abstract_excerpt":"The behaviour of materials under spatial confinement is sensitively dependent on the nature of the confining boundaries. In two dimensions, confinement within a hard circular boundary inhibits the hexagonal ordering observed in bulk systems at high density. Using colloidal experiments and Monte Carlo simulations, we investigate two model systems of quasi hard discs under circularly symmetric confinement. The first system employs an adaptive circular boundary, defined experimentally using holographic optical tweezers. We show that deformation of this boundary allows, and indeed is required for,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.4781","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":"2026-05-18T01:46:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T5Sqz3PYeJ6nrkv7vU5Rkl8old785pgrGKChekwDb8qpUOmXlc7pOZvUZlTohmTGwSaj7njC/xt0hGmQlKeKBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T23:43:19.526223Z"},"content_sha256":"8b010a768e818b4797fd2c0d8583e54d821b871e5314529ecbf83c814895f119","schema_version":"1.0","event_id":"sha256:8b010a768e818b4797fd2c0d8583e54d821b871e5314529ecbf83c814895f119"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K2GMIBUWHKEXVEUZ67FMT4NOI6/bundle.json","state_url":"https://pith.science/pith/K2GMIBUWHKEXVEUZ67FMT4NOI6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K2GMIBUWHKEXVEUZ67FMT4NOI6/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":"2026-05-27T23:43:19Z","links":{"resolver":"https://pith.science/pith/K2GMIBUWHKEXVEUZ67FMT4NOI6","bundle":"https://pith.science/pith/K2GMIBUWHKEXVEUZ67FMT4NOI6/bundle.json","state":"https://pith.science/pith/K2GMIBUWHKEXVEUZ67FMT4NOI6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K2GMIBUWHKEXVEUZ67FMT4NOI6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:K2GMIBUWHKEXVEUZ67FMT4NOI6","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":"c156f22d998e5c37780032e05ca0870158b67fc4a3d92fa1e33a4108b7d5697d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-11-19T15:25:43Z","title_canon_sha256":"9592b2112dcc3e32b3095e4d231268887e68dbbc5032904fd99115112a847cf6"},"schema_version":"1.0","source":{"id":"1311.4781","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.4781","created_at":"2026-05-18T01:46:23Z"},{"alias_kind":"arxiv_version","alias_value":"1311.4781v1","created_at":"2026-05-18T01:46:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.4781","created_at":"2026-05-18T01:46:23Z"},{"alias_kind":"pith_short_12","alias_value":"K2GMIBUWHKEX","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"K2GMIBUWHKEXVEUZ","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"K2GMIBUW","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:8b010a768e818b4797fd2c0d8583e54d821b871e5314529ecbf83c814895f119","target":"graph","created_at":"2026-05-18T01:46:23Z","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":"The behaviour of materials under spatial confinement is sensitively dependent on the nature of the confining boundaries. In two dimensions, confinement within a hard circular boundary inhibits the hexagonal ordering observed in bulk systems at high density. Using colloidal experiments and Monte Carlo simulations, we investigate two model systems of quasi hard discs under circularly symmetric confinement. The first system employs an adaptive circular boundary, defined experimentally using holographic optical tweezers. We show that deformation of this boundary allows, and indeed is required for,","authors_text":"C. Patrick Royall, Erdal C. O\\u{g}uz, Hartmut L\\\"owen, Ian Williams, Paul Bartlett, Robert L. Jack","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-11-19T15:25:43Z","title":"The effect of boundary adaptivity on hexagonal ordering and bistability in circularly confined quasi hard discs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.4781","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":"sha256:7bdadc0e1af411f448f48d1215dad705d7e035d5f5eb7dd16fbfef49f28f4e4e","target":"record","created_at":"2026-05-18T01:46:23Z","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":"c156f22d998e5c37780032e05ca0870158b67fc4a3d92fa1e33a4108b7d5697d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-11-19T15:25:43Z","title_canon_sha256":"9592b2112dcc3e32b3095e4d231268887e68dbbc5032904fd99115112a847cf6"},"schema_version":"1.0","source":{"id":"1311.4781","kind":"arxiv","version":1}},"canonical_sha256":"568cc406963a897a9299f7cac9f1ae47ba4f7e6cc7508fb6cd7bb52938d508bc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"568cc406963a897a9299f7cac9f1ae47ba4f7e6cc7508fb6cd7bb52938d508bc","first_computed_at":"2026-05-18T01:46:23.034135Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:46:23.034135Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m6jnnM7uo1k9Y95OTsp1mrLocZksoojdryd4qL8yI+reSqRmeyybZkQ0FW3yPk7nbFdfoHjfIn6qjUE2C1a1Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:46:23.034856Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.4781","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7bdadc0e1af411f448f48d1215dad705d7e035d5f5eb7dd16fbfef49f28f4e4e","sha256:8b010a768e818b4797fd2c0d8583e54d821b871e5314529ecbf83c814895f119"],"state_sha256":"9ef2e5e56c4a96b2d4a6ab4bbbf9f1dbae6dc1bfa92248e8452220bfa5d527d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jV4p521iHpaK81fJHwO94gUKlB7roIVbgVQs7dPSl8NFEKfZmjrnq5a9b24LAUQSkaHXokzxTNqBdN3c14GKCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T23:43:19.528708Z","bundle_sha256":"195f730307eeb89fda4c9b083f441317b6c5f809f6ce9b86193ae8a4a796122c"}}