{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:SI2HVGMX7JF7YJJ5KU3J4QMX6H","short_pith_number":"pith:SI2HVGMX","canonical_record":{"source":{"id":"1501.06228","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2015-01-26T01:26:31Z","cross_cats_sorted":[],"title_canon_sha256":"94c31b31f7f31fdd3efca0c38d0c847db55174d3982a5e1a43762611bd21500a","abstract_canon_sha256":"87d2f5ef85e1367e261996c0b8579da6d78a8fe54001f1939123ce6f44ef103d"},"schema_version":"1.0"},"canonical_sha256":"92347a9997fa4bfc253d55369e4197f1cd0518ac6771d16430b64be02b1692fc","source":{"kind":"arxiv","id":"1501.06228","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.06228","created_at":"2026-05-18T01:35:11Z"},{"alias_kind":"arxiv_version","alias_value":"1501.06228v3","created_at":"2026-05-18T01:35:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.06228","created_at":"2026-05-18T01:35:11Z"},{"alias_kind":"pith_short_12","alias_value":"SI2HVGMX7JF7","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SI2HVGMX7JF7YJJ5","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SI2HVGMX","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:SI2HVGMX7JF7YJJ5KU3J4QMX6H","target":"record","payload":{"canonical_record":{"source":{"id":"1501.06228","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2015-01-26T01:26:31Z","cross_cats_sorted":[],"title_canon_sha256":"94c31b31f7f31fdd3efca0c38d0c847db55174d3982a5e1a43762611bd21500a","abstract_canon_sha256":"87d2f5ef85e1367e261996c0b8579da6d78a8fe54001f1939123ce6f44ef103d"},"schema_version":"1.0"},"canonical_sha256":"92347a9997fa4bfc253d55369e4197f1cd0518ac6771d16430b64be02b1692fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:11.439474Z","signature_b64":"KvhdNJyh08PEkimf27nz7oQmLM3pI4x0zM0hGXq9l7a4Z8xf0aArpNyn5UXP4JgxUFSL9pIShCdtsVOCrQgNDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"92347a9997fa4bfc253d55369e4197f1cd0518ac6771d16430b64be02b1692fc","last_reissued_at":"2026-05-18T01:35:11.438840Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:11.438840Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.06228","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:35:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QPhD3kIBtjRwpk298x/AQ85/vj8fIyAjaMEDmJOYxe+dIMfATyRyjkz8aTb11RGEDhrop4giscfLyv0L+ltjBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T06:33:50.439437Z"},"content_sha256":"9917da9721f1d069212c2ad13a966bffbcc8e4e878d1a5afd0471ecdb9ac4dbe","schema_version":"1.0","event_id":"sha256:9917da9721f1d069212c2ad13a966bffbcc8e4e878d1a5afd0471ecdb9ac4dbe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:SI2HVGMX7JF7YJJ5KU3J4QMX6H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Orientational order of motile defects in active nematics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Aparna Baskaran, Gabriel S. Redner, Michael F. Hagan, Stephen J. DeCamp, Zvonimir Dogic","submitted_at":"2015-01-26T01:26:31Z","abstract_excerpt":"The study of liquid crystals at equilibrium has led to fundamental insights into the nature of ordered materials, as well as to practical applications such as display technologies. Active nematics are a fundamentally different class of liquid crystals, driven away from equilibrium by the autonomous motion of their constituent rod-like particles. This internally generated activity powers the continuous creation and annihilation of topological defects, which leads to complex streaming flows whose chaotic dynamics appear to destroy long-range order. Here, we study these dynamics in experimental a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.06228","kind":"arxiv","version":3},"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":"2026-05-18T01:35:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+eUPFZICDZhTjLLdF57RDPxuFYrM7jDZQSXe8WnMgzL0TVEJZyMMPzAgRdnnLx/OuqfAU32txO+zR0Wapb+OAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T06:33:50.439849Z"},"content_sha256":"a63a39f2877497e7d4e97223310703957ef09098b82c8eecc4af97ce6258d0aa","schema_version":"1.0","event_id":"sha256:a63a39f2877497e7d4e97223310703957ef09098b82c8eecc4af97ce6258d0aa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SI2HVGMX7JF7YJJ5KU3J4QMX6H/bundle.json","state_url":"https://pith.science/pith/SI2HVGMX7JF7YJJ5KU3J4QMX6H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SI2HVGMX7JF7YJJ5KU3J4QMX6H/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":"2026-06-23T06:33:50Z","links":{"resolver":"https://pith.science/pith/SI2HVGMX7JF7YJJ5KU3J4QMX6H","bundle":"https://pith.science/pith/SI2HVGMX7JF7YJJ5KU3J4QMX6H/bundle.json","state":"https://pith.science/pith/SI2HVGMX7JF7YJJ5KU3J4QMX6H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SI2HVGMX7JF7YJJ5KU3J4QMX6H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:SI2HVGMX7JF7YJJ5KU3J4QMX6H","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":"87d2f5ef85e1367e261996c0b8579da6d78a8fe54001f1939123ce6f44ef103d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2015-01-26T01:26:31Z","title_canon_sha256":"94c31b31f7f31fdd3efca0c38d0c847db55174d3982a5e1a43762611bd21500a"},"schema_version":"1.0","source":{"id":"1501.06228","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.06228","created_at":"2026-05-18T01:35:11Z"},{"alias_kind":"arxiv_version","alias_value":"1501.06228v3","created_at":"2026-05-18T01:35:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.06228","created_at":"2026-05-18T01:35:11Z"},{"alias_kind":"pith_short_12","alias_value":"SI2HVGMX7JF7","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SI2HVGMX7JF7YJJ5","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SI2HVGMX","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:a63a39f2877497e7d4e97223310703957ef09098b82c8eecc4af97ce6258d0aa","target":"graph","created_at":"2026-05-18T01:35:11Z","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 study of liquid crystals at equilibrium has led to fundamental insights into the nature of ordered materials, as well as to practical applications such as display technologies. Active nematics are a fundamentally different class of liquid crystals, driven away from equilibrium by the autonomous motion of their constituent rod-like particles. This internally generated activity powers the continuous creation and annihilation of topological defects, which leads to complex streaming flows whose chaotic dynamics appear to destroy long-range order. Here, we study these dynamics in experimental a","authors_text":"Aparna Baskaran, Gabriel S. Redner, Michael F. Hagan, Stephen J. DeCamp, Zvonimir Dogic","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2015-01-26T01:26:31Z","title":"Orientational order of motile defects in active nematics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.06228","kind":"arxiv","version":3},"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":"sha256:9917da9721f1d069212c2ad13a966bffbcc8e4e878d1a5afd0471ecdb9ac4dbe","target":"record","created_at":"2026-05-18T01:35:11Z","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":"87d2f5ef85e1367e261996c0b8579da6d78a8fe54001f1939123ce6f44ef103d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2015-01-26T01:26:31Z","title_canon_sha256":"94c31b31f7f31fdd3efca0c38d0c847db55174d3982a5e1a43762611bd21500a"},"schema_version":"1.0","source":{"id":"1501.06228","kind":"arxiv","version":3}},"canonical_sha256":"92347a9997fa4bfc253d55369e4197f1cd0518ac6771d16430b64be02b1692fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"92347a9997fa4bfc253d55369e4197f1cd0518ac6771d16430b64be02b1692fc","first_computed_at":"2026-05-18T01:35:11.438840Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:11.438840Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KvhdNJyh08PEkimf27nz7oQmLM3pI4x0zM0hGXq9l7a4Z8xf0aArpNyn5UXP4JgxUFSL9pIShCdtsVOCrQgNDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:11.439474Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.06228","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9917da9721f1d069212c2ad13a966bffbcc8e4e878d1a5afd0471ecdb9ac4dbe","sha256:a63a39f2877497e7d4e97223310703957ef09098b82c8eecc4af97ce6258d0aa"],"state_sha256":"d7fd0f4973d99ab3e29f946e5dee0920c67e6cff951c724ecee698fb2ce6f48b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LLqEMQHUdooBw5TYAEKxMgw9pVZcWwtIUpCzfdKSJpmRzplUZEkTckfIcSwnHPJHxU8Yo2nsATyOWKrh7YTtBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T06:33:50.442030Z","bundle_sha256":"e13cbb853e3c84f8806112c19d482ae62ca143bc427ab5c8e1fe26b18e6ef921"}}