{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:5676GVBVVKTFREJBMXDNDPUCSP","short_pith_number":"pith:5676GVBV","canonical_record":{"source":{"id":"2607.25688","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-07-28T13:03:17Z","cross_cats_sorted":[],"title_canon_sha256":"be23d01ce305381d749f91c62805cdd54a1908bb2a899f0523c5483fa82eb920","abstract_canon_sha256":"923cd967577d732d183c48b707e6d9fc04850d4787aebff5772f4818c3dc9469"},"schema_version":"1.0"},"canonical_sha256":"efbfe35435aaa658912165c6d1be8293cea77059430c118808072db7338661e5","source":{"kind":"arxiv","id":"2607.25688","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.25688","created_at":"2026-07-29T01:25:57Z"},{"alias_kind":"arxiv_version","alias_value":"2607.25688v1","created_at":"2026-07-29T01:25:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.25688","created_at":"2026-07-29T01:25:57Z"},{"alias_kind":"pith_short_12","alias_value":"5676GVBVVKTF","created_at":"2026-07-29T01:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"5676GVBVVKTFREJB","created_at":"2026-07-29T01:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"5676GVBV","created_at":"2026-07-29T01:25:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:5676GVBVVKTFREJBMXDNDPUCSP","target":"record","payload":{"canonical_record":{"source":{"id":"2607.25688","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-07-28T13:03:17Z","cross_cats_sorted":[],"title_canon_sha256":"be23d01ce305381d749f91c62805cdd54a1908bb2a899f0523c5483fa82eb920","abstract_canon_sha256":"923cd967577d732d183c48b707e6d9fc04850d4787aebff5772f4818c3dc9469"},"schema_version":"1.0"},"canonical_sha256":"efbfe35435aaa658912165c6d1be8293cea77059430c118808072db7338661e5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-29T01:25:57.126363Z","signature_b64":"HwE14HdIyxxLXw/iApEaZknheqwRLbibKwWniC8Mhgs3eyKakVXp/ANlGjsQUpY7m8b45i6kyOGWzbZ55oYHBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"efbfe35435aaa658912165c6d1be8293cea77059430c118808072db7338661e5","last_reissued_at":"2026-07-29T01:25:57.125494Z","signature_status":"signed_v1","first_computed_at":"2026-07-29T01:25:57.125494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.25688","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":"2026-07-29T01:25:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E+lu5GsvVWhlW4cUFWQCKjZmmXCBE34uX23+ZlFxr5pIqDlzyWNwC+682amXBHF8j5zrkCrr37YyC9FrPjhGCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T17:09:46.878576Z"},"content_sha256":"347479fd0c7f24125d106402156896b8f6f56fb73f6003a1efe061688372e601","schema_version":"1.0","event_id":"sha256:347479fd0c7f24125d106402156896b8f6f56fb73f6003a1efe061688372e601"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:5676GVBVVKTFREJBMXDNDPUCSP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Antichiral hinge states in a higher-order photonic nodal ring semimetal","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Baile Zhang, Bo Zhao, Deep Mondal, Fei-Fei Li, Gui-Geng Liu, Jingyi Tian, Minggui Wei, Minqi Cheng, Peiheng Zhou, Rimi Banerjee, Shuaiyang Wei, Subhaskar Mandal, Wanting Wu, Weili Li, Wenrong Qi, Xiaokang Dai, Xinyi Zhang, Yuchen Peng, Yuting Yang, Zhenzhi Liu","submitted_at":"2026-07-28T13:03:17Z","abstract_excerpt":"Antichiral states propagate in the same direction on opposite boundaries, defying the conventional constraint that boundary modes must cancel net chirality. Previously found antichiral states have been limited to first-order topological semimetals. However, antichiral hinge states, the antichiral counterpart of recently discovered higher-order chiral hinge states, remain elusive. Here, we report the observation of antichiral hinge states in a higher-order nodal-ring semimetal made of a three-dimensional gyromagnetic photonic crystal. Near-field scanning measurements reveal a pair of hinge stat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.25688","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.25688/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-29T01:25:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SLPHSrpykA36mB2V+HkHyF1ieeILWMPFkyIfIwlSnBberxnHSW/F6PCQImlGJqq3L8BSW11hDVeGXGuxoh+TBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T17:09:46.879057Z"},"content_sha256":"6dfd13cd6b61811e9bb8b982352fe985c4468996aa49f40abddbb3310b4cc183","schema_version":"1.0","event_id":"sha256:6dfd13cd6b61811e9bb8b982352fe985c4468996aa49f40abddbb3310b4cc183"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5676GVBVVKTFREJBMXDNDPUCSP/bundle.json","state_url":"https://pith.science/pith/5676GVBVVKTFREJBMXDNDPUCSP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5676GVBVVKTFREJBMXDNDPUCSP/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":"2026-08-15T17:09:46Z","links":{"resolver":"https://pith.science/pith/5676GVBVVKTFREJBMXDNDPUCSP","bundle":"https://pith.science/pith/5676GVBVVKTFREJBMXDNDPUCSP/bundle.json","state":"https://pith.science/pith/5676GVBVVKTFREJBMXDNDPUCSP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5676GVBVVKTFREJBMXDNDPUCSP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:5676GVBVVKTFREJBMXDNDPUCSP","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":"923cd967577d732d183c48b707e6d9fc04850d4787aebff5772f4818c3dc9469","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-07-28T13:03:17Z","title_canon_sha256":"be23d01ce305381d749f91c62805cdd54a1908bb2a899f0523c5483fa82eb920"},"schema_version":"1.0","source":{"id":"2607.25688","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.25688","created_at":"2026-07-29T01:25:57Z"},{"alias_kind":"arxiv_version","alias_value":"2607.25688v1","created_at":"2026-07-29T01:25:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.25688","created_at":"2026-07-29T01:25:57Z"},{"alias_kind":"pith_short_12","alias_value":"5676GVBVVKTF","created_at":"2026-07-29T01:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"5676GVBVVKTFREJB","created_at":"2026-07-29T01:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"5676GVBV","created_at":"2026-07-29T01:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:6dfd13cd6b61811e9bb8b982352fe985c4468996aa49f40abddbb3310b4cc183","target":"graph","created_at":"2026-07-29T01:25:57Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.25688/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Antichiral states propagate in the same direction on opposite boundaries, defying the conventional constraint that boundary modes must cancel net chirality. Previously found antichiral states have been limited to first-order topological semimetals. However, antichiral hinge states, the antichiral counterpart of recently discovered higher-order chiral hinge states, remain elusive. Here, we report the observation of antichiral hinge states in a higher-order nodal-ring semimetal made of a three-dimensional gyromagnetic photonic crystal. Near-field scanning measurements reveal a pair of hinge stat","authors_text":"Baile Zhang, Bo Zhao, Deep Mondal, Fei-Fei Li, Gui-Geng Liu, Jingyi Tian, Minggui Wei, Minqi Cheng, Peiheng Zhou, Rimi Banerjee, Shuaiyang Wei, Subhaskar Mandal, Wanting Wu, Weili Li, Wenrong Qi, Xiaokang Dai, Xinyi Zhang, Yuchen Peng, Yuting Yang, Zhenzhi Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-07-28T13:03:17Z","title":"Antichiral hinge states in a higher-order photonic nodal ring semimetal"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.25688","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":"sha256:347479fd0c7f24125d106402156896b8f6f56fb73f6003a1efe061688372e601","target":"record","created_at":"2026-07-29T01:25:57Z","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":"923cd967577d732d183c48b707e6d9fc04850d4787aebff5772f4818c3dc9469","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-07-28T13:03:17Z","title_canon_sha256":"be23d01ce305381d749f91c62805cdd54a1908bb2a899f0523c5483fa82eb920"},"schema_version":"1.0","source":{"id":"2607.25688","kind":"arxiv","version":1}},"canonical_sha256":"efbfe35435aaa658912165c6d1be8293cea77059430c118808072db7338661e5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"efbfe35435aaa658912165c6d1be8293cea77059430c118808072db7338661e5","first_computed_at":"2026-07-29T01:25:57.125494Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-29T01:25:57.125494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HwE14HdIyxxLXw/iApEaZknheqwRLbibKwWniC8Mhgs3eyKakVXp/ANlGjsQUpY7m8b45i6kyOGWzbZ55oYHBQ==","signature_status":"signed_v1","signed_at":"2026-07-29T01:25:57.126363Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.25688","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:347479fd0c7f24125d106402156896b8f6f56fb73f6003a1efe061688372e601","sha256:6dfd13cd6b61811e9bb8b982352fe985c4468996aa49f40abddbb3310b4cc183"],"state_sha256":"e4680a10ba64b84a4eb5bc72dae59bdf1b96d06ed5e9af8fa28f6f9a1f0512a5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jcqhUpb9sUIE+GUZFYCpWxZmln3kkaj1CGWom+3pAnmDjxBcuP9kAL6Bo/p5sQnQzQ0fWMERcc9kmP0IonUfBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T17:09:46.882476Z","bundle_sha256":"35b32bdaec18eca7ade88d62402453f213be3ee3ff70b33803f5dac949cfc232"}}