{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:5FKHRN6ZJFSMB6VOY7U3BY5JQY","short_pith_number":"pith:5FKHRN6Z","canonical_record":{"source":{"id":"2607.13954","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-07-15T15:43:35Z","cross_cats_sorted":[],"title_canon_sha256":"1b35e8068448e7fd2f70c7585e88d24267360f26685c92f9a33e7b351dae5122","abstract_canon_sha256":"311bfde81249a94871ad8a28c29e0f744904520d258138ecacede6436c6db766"},"schema_version":"1.0"},"canonical_sha256":"e95478b7d94964c0faaec7e9b0e3a9861114439bb78d469bf514119217117256","source":{"kind":"arxiv","id":"2607.13954","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.13954","created_at":"2026-07-16T01:23:16Z"},{"alias_kind":"arxiv_version","alias_value":"2607.13954v1","created_at":"2026-07-16T01:23:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.13954","created_at":"2026-07-16T01:23:16Z"},{"alias_kind":"pith_short_12","alias_value":"5FKHRN6ZJFSM","created_at":"2026-07-16T01:23:16Z"},{"alias_kind":"pith_short_16","alias_value":"5FKHRN6ZJFSMB6VO","created_at":"2026-07-16T01:23:16Z"},{"alias_kind":"pith_short_8","alias_value":"5FKHRN6Z","created_at":"2026-07-16T01:23:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:5FKHRN6ZJFSMB6VOY7U3BY5JQY","target":"record","payload":{"canonical_record":{"source":{"id":"2607.13954","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-07-15T15:43:35Z","cross_cats_sorted":[],"title_canon_sha256":"1b35e8068448e7fd2f70c7585e88d24267360f26685c92f9a33e7b351dae5122","abstract_canon_sha256":"311bfde81249a94871ad8a28c29e0f744904520d258138ecacede6436c6db766"},"schema_version":"1.0"},"canonical_sha256":"e95478b7d94964c0faaec7e9b0e3a9861114439bb78d469bf514119217117256","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-16T01:23:16.227847Z","signature_b64":"0dDK6jtik7d4z/7WgCWLqqFZCs8MXn/tdb+LXUAGDfUY6yMjLRl4MPOKdre/CpZwbu8boPRWvKOJHcfxXwJ/CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e95478b7d94964c0faaec7e9b0e3a9861114439bb78d469bf514119217117256","last_reissued_at":"2026-07-16T01:23:16.226860Z","signature_status":"signed_v1","first_computed_at":"2026-07-16T01:23:16.226860Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.13954","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":"2026-07-16T01:23:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6idU2SbItfljI9TP2BSVWGqLyI+73DXxNWgBa0zp/oLL5n8k0ilcoXJMAB0TA7x0VaqrWP8Nm8CifEyl39OOAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T22:53:59.908052Z"},"content_sha256":"941344c8261bd8e3e08102be4e18d691a67221f33ce38143052457e0bab6c6d5","schema_version":"1.0","event_id":"sha256:941344c8261bd8e3e08102be4e18d691a67221f33ce38143052457e0bab6c6d5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:5FKHRN6ZJFSMB6VOY7U3BY5JQY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"ZPAN: An Organic Nonlinear Optical Crystal for High Intensity THz Generation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"David J. Michaelis, Elisha Jones, Jeremy A. Johnson, Matthew J. Lutz, Paige Petersen, Sin-Hang Ho (Enoch), Stacey J. Smith, Zachary B. Zaccardi","submitted_at":"2026-07-15T15:43:35Z","abstract_excerpt":"We report an optimized synthesis and crystal growth protocol as well as structural, optical, and terahertz (THz) generation characteristics of the organic nonlinear optical crystal ZPAN ((Z)-1-(((4-Phenylamino)phenylamino)methylene)naphthalen-2(1H)-one). Noncentrosymmetric packing of ZPAN is most reliably achieved by slow evaporation from an acetone-based solvent system, producing long rectangular prisms (7 cm \\times 1 cm \\times 0.2 cm) with (010) as the main face and [001] as both the polar axis and the direction of elongated crystal growth. [001] is thus the most effective pump polarization "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.13954","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/2607.13954/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":"2026-07-16T01:23:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S1aJVoSsJOSLH+UhyYWmh6t1s6d5ERSnjq5w+AxWvZwpAAU1uBOfuKFy4OcszCcc855ogw1ZzBxu1omc0nS4AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T22:53:59.908591Z"},"content_sha256":"e6372687e0b3fa11e8882aee3e581b965fb945a13c80391435b17c6c6e6d9485","schema_version":"1.0","event_id":"sha256:e6372687e0b3fa11e8882aee3e581b965fb945a13c80391435b17c6c6e6d9485"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5FKHRN6ZJFSMB6VOY7U3BY5JQY/bundle.json","state_url":"https://pith.science/pith/5FKHRN6ZJFSMB6VOY7U3BY5JQY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5FKHRN6ZJFSMB6VOY7U3BY5JQY/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":"2026-08-23T22:53:59Z","links":{"resolver":"https://pith.science/pith/5FKHRN6ZJFSMB6VOY7U3BY5JQY","bundle":"https://pith.science/pith/5FKHRN6ZJFSMB6VOY7U3BY5JQY/bundle.json","state":"https://pith.science/pith/5FKHRN6ZJFSMB6VOY7U3BY5JQY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5FKHRN6ZJFSMB6VOY7U3BY5JQY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:5FKHRN6ZJFSMB6VOY7U3BY5JQY","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":"311bfde81249a94871ad8a28c29e0f744904520d258138ecacede6436c6db766","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-07-15T15:43:35Z","title_canon_sha256":"1b35e8068448e7fd2f70c7585e88d24267360f26685c92f9a33e7b351dae5122"},"schema_version":"1.0","source":{"id":"2607.13954","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.13954","created_at":"2026-07-16T01:23:16Z"},{"alias_kind":"arxiv_version","alias_value":"2607.13954v1","created_at":"2026-07-16T01:23:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.13954","created_at":"2026-07-16T01:23:16Z"},{"alias_kind":"pith_short_12","alias_value":"5FKHRN6ZJFSM","created_at":"2026-07-16T01:23:16Z"},{"alias_kind":"pith_short_16","alias_value":"5FKHRN6ZJFSMB6VO","created_at":"2026-07-16T01:23:16Z"},{"alias_kind":"pith_short_8","alias_value":"5FKHRN6Z","created_at":"2026-07-16T01:23:16Z"}],"graph_snapshots":[{"event_id":"sha256:e6372687e0b3fa11e8882aee3e581b965fb945a13c80391435b17c6c6e6d9485","target":"graph","created_at":"2026-07-16T01:23:16Z","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/2607.13954/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report an optimized synthesis and crystal growth protocol as well as structural, optical, and terahertz (THz) generation characteristics of the organic nonlinear optical crystal ZPAN ((Z)-1-(((4-Phenylamino)phenylamino)methylene)naphthalen-2(1H)-one). Noncentrosymmetric packing of ZPAN is most reliably achieved by slow evaporation from an acetone-based solvent system, producing long rectangular prisms (7 cm \\times 1 cm \\times 0.2 cm) with (010) as the main face and [001] as both the polar axis and the direction of elongated crystal growth. [001] is thus the most effective pump polarization ","authors_text":"David J. Michaelis, Elisha Jones, Jeremy A. Johnson, Matthew J. Lutz, Paige Petersen, Sin-Hang Ho (Enoch), Stacey J. Smith, Zachary B. Zaccardi","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-07-15T15:43:35Z","title":"ZPAN: An Organic Nonlinear Optical Crystal for High Intensity THz Generation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.13954","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":"sha256:941344c8261bd8e3e08102be4e18d691a67221f33ce38143052457e0bab6c6d5","target":"record","created_at":"2026-07-16T01:23:16Z","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":"311bfde81249a94871ad8a28c29e0f744904520d258138ecacede6436c6db766","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-07-15T15:43:35Z","title_canon_sha256":"1b35e8068448e7fd2f70c7585e88d24267360f26685c92f9a33e7b351dae5122"},"schema_version":"1.0","source":{"id":"2607.13954","kind":"arxiv","version":1}},"canonical_sha256":"e95478b7d94964c0faaec7e9b0e3a9861114439bb78d469bf514119217117256","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e95478b7d94964c0faaec7e9b0e3a9861114439bb78d469bf514119217117256","first_computed_at":"2026-07-16T01:23:16.226860Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-16T01:23:16.226860Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0dDK6jtik7d4z/7WgCWLqqFZCs8MXn/tdb+LXUAGDfUY6yMjLRl4MPOKdre/CpZwbu8boPRWvKOJHcfxXwJ/CQ==","signature_status":"signed_v1","signed_at":"2026-07-16T01:23:16.227847Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.13954","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:941344c8261bd8e3e08102be4e18d691a67221f33ce38143052457e0bab6c6d5","sha256:e6372687e0b3fa11e8882aee3e581b965fb945a13c80391435b17c6c6e6d9485"],"state_sha256":"a10e865665533c9c69d202749747778a5cdc2055698e2dc444c745d45971bb7b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xHVvfsy4gx5yKq28lpNi7dLHGcWPv1TZlUdBz6VPyRlpgmjDIp9KrR/SfvgK++xNwgZcL+/7kHddC1EmstKICg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T22:53:59.912597Z","bundle_sha256":"458ae3251a97eb3c2cbdf2039a890030af0bdd51978993b8ff2f6da9f60df223"}}