{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:AWOQXAJBAA32WEUJPRFVRYAFK4","short_pith_number":"pith:AWOQXAJB","canonical_record":{"source":{"id":"2003.03054","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-03-06T07:05:33Z","cross_cats_sorted":[],"title_canon_sha256":"31617fe848c15631efa7b5ddd0b12f1834b7088bcba0d4823334c4efb041f2b3","abstract_canon_sha256":"3222d3e3d3633344be95fd0b25e52e51a2045b79013428ba0fd59d67611c7982"},"schema_version":"1.0"},"canonical_sha256":"059d0b81210037ab12897c4b58e005573e80b5216b8c38260005e8d90a95a647","source":{"kind":"arxiv","id":"2003.03054","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.03054","created_at":"2026-07-05T02:03:14Z"},{"alias_kind":"arxiv_version","alias_value":"2003.03054v1","created_at":"2026-07-05T02:03:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.03054","created_at":"2026-07-05T02:03:14Z"},{"alias_kind":"pith_short_12","alias_value":"AWOQXAJBAA32","created_at":"2026-07-05T02:03:14Z"},{"alias_kind":"pith_short_16","alias_value":"AWOQXAJBAA32WEUJ","created_at":"2026-07-05T02:03:14Z"},{"alias_kind":"pith_short_8","alias_value":"AWOQXAJB","created_at":"2026-07-05T02:03:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:AWOQXAJBAA32WEUJPRFVRYAFK4","target":"record","payload":{"canonical_record":{"source":{"id":"2003.03054","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-03-06T07:05:33Z","cross_cats_sorted":[],"title_canon_sha256":"31617fe848c15631efa7b5ddd0b12f1834b7088bcba0d4823334c4efb041f2b3","abstract_canon_sha256":"3222d3e3d3633344be95fd0b25e52e51a2045b79013428ba0fd59d67611c7982"},"schema_version":"1.0"},"canonical_sha256":"059d0b81210037ab12897c4b58e005573e80b5216b8c38260005e8d90a95a647","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:03:14.742972Z","signature_b64":"fb4si3PGT8GxIH87pilmNmSFii5JwP8+rIfN96bvOioKINw9wttMu/F3OSyS2+XiZe7KZh+MyY2V2h89WmprAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"059d0b81210037ab12897c4b58e005573e80b5216b8c38260005e8d90a95a647","last_reissued_at":"2026-07-05T02:03:14.742627Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:03:14.742627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.03054","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":"2026-07-05T02:03:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+s4fFh5bsvYNJ0Z7rOsDjRcwJTpmjWm0fB7q7UUEoFaJo374+OhUCBA46FsPCpgxHzux+OAvoVO5btJiiH4WAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T07:13:39.560263Z"},"content_sha256":"7e2edb4f1468aae4fd5e926f9655dae4f7950899876d91d50b72205128900a4f","schema_version":"1.0","event_id":"sha256:7e2edb4f1468aae4fd5e926f9655dae4f7950899876d91d50b72205128900a4f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:AWOQXAJBAA32WEUJPRFVRYAFK4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hexagonal boron nitride as an ideal substrate for carbon nanotube photonics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. Ishii, K. Nagashio, K. Otsuka, K. Watanabe, N. Fang, T. Taniguchi, Y. K. Kato","submitted_at":"2020-03-06T07:05:33Z","abstract_excerpt":"Hexagonal boron nitride is widely used as a substrate for two-dimensional materials in both electronic and photonic devices. Here, we demonstrate that two-dimensional hexagonal boron nitride is also an ideal substrate for one-dimensional single-walled carbon nanotubes. Nanotubes directly attached to hexagonal boron nitride show bright photoluminescence with narrow linewidth at room temperature, comparable to air-suspended nanotubes. Using photoluminescence excitation spectroscopy, we unambiguously assign the chiralities of nanotubes on boron nitride by tracking individual tubes before and afte"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.03054","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/2003.03054/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":"2026-07-05T02:03:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NjcfZaCDdFQsIbE1cF9s/z0QpW1VsRkGGCZYfEm1GXKF+7fc1he9UONL+GdOX5XjWIxAddgca8ZIJp8pPOCvBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T07:13:39.560838Z"},"content_sha256":"1edec5fa85f4646f7e5b8fa72c65f3f8d17e02dafddf5096057f655560df54a2","schema_version":"1.0","event_id":"sha256:1edec5fa85f4646f7e5b8fa72c65f3f8d17e02dafddf5096057f655560df54a2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AWOQXAJBAA32WEUJPRFVRYAFK4/bundle.json","state_url":"https://pith.science/pith/AWOQXAJBAA32WEUJPRFVRYAFK4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AWOQXAJBAA32WEUJPRFVRYAFK4/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":"2026-08-05T07:13:39Z","links":{"resolver":"https://pith.science/pith/AWOQXAJBAA32WEUJPRFVRYAFK4","bundle":"https://pith.science/pith/AWOQXAJBAA32WEUJPRFVRYAFK4/bundle.json","state":"https://pith.science/pith/AWOQXAJBAA32WEUJPRFVRYAFK4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AWOQXAJBAA32WEUJPRFVRYAFK4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:AWOQXAJBAA32WEUJPRFVRYAFK4","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":"3222d3e3d3633344be95fd0b25e52e51a2045b79013428ba0fd59d67611c7982","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-03-06T07:05:33Z","title_canon_sha256":"31617fe848c15631efa7b5ddd0b12f1834b7088bcba0d4823334c4efb041f2b3"},"schema_version":"1.0","source":{"id":"2003.03054","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.03054","created_at":"2026-07-05T02:03:14Z"},{"alias_kind":"arxiv_version","alias_value":"2003.03054v1","created_at":"2026-07-05T02:03:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.03054","created_at":"2026-07-05T02:03:14Z"},{"alias_kind":"pith_short_12","alias_value":"AWOQXAJBAA32","created_at":"2026-07-05T02:03:14Z"},{"alias_kind":"pith_short_16","alias_value":"AWOQXAJBAA32WEUJ","created_at":"2026-07-05T02:03:14Z"},{"alias_kind":"pith_short_8","alias_value":"AWOQXAJB","created_at":"2026-07-05T02:03:14Z"}],"graph_snapshots":[{"event_id":"sha256:1edec5fa85f4646f7e5b8fa72c65f3f8d17e02dafddf5096057f655560df54a2","target":"graph","created_at":"2026-07-05T02:03:14Z","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/2003.03054/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Hexagonal boron nitride is widely used as a substrate for two-dimensional materials in both electronic and photonic devices. Here, we demonstrate that two-dimensional hexagonal boron nitride is also an ideal substrate for one-dimensional single-walled carbon nanotubes. Nanotubes directly attached to hexagonal boron nitride show bright photoluminescence with narrow linewidth at room temperature, comparable to air-suspended nanotubes. Using photoluminescence excitation spectroscopy, we unambiguously assign the chiralities of nanotubes on boron nitride by tracking individual tubes before and afte","authors_text":"A. Ishii, K. Nagashio, K. Otsuka, K. Watanabe, N. Fang, T. Taniguchi, Y. K. Kato","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-03-06T07:05:33Z","title":"Hexagonal boron nitride as an ideal substrate for carbon nanotube photonics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.03054","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":"sha256:7e2edb4f1468aae4fd5e926f9655dae4f7950899876d91d50b72205128900a4f","target":"record","created_at":"2026-07-05T02:03:14Z","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":"3222d3e3d3633344be95fd0b25e52e51a2045b79013428ba0fd59d67611c7982","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-03-06T07:05:33Z","title_canon_sha256":"31617fe848c15631efa7b5ddd0b12f1834b7088bcba0d4823334c4efb041f2b3"},"schema_version":"1.0","source":{"id":"2003.03054","kind":"arxiv","version":1}},"canonical_sha256":"059d0b81210037ab12897c4b58e005573e80b5216b8c38260005e8d90a95a647","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"059d0b81210037ab12897c4b58e005573e80b5216b8c38260005e8d90a95a647","first_computed_at":"2026-07-05T02:03:14.742627Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:03:14.742627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fb4si3PGT8GxIH87pilmNmSFii5JwP8+rIfN96bvOioKINw9wttMu/F3OSyS2+XiZe7KZh+MyY2V2h89WmprAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:03:14.742972Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.03054","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7e2edb4f1468aae4fd5e926f9655dae4f7950899876d91d50b72205128900a4f","sha256:1edec5fa85f4646f7e5b8fa72c65f3f8d17e02dafddf5096057f655560df54a2"],"state_sha256":"ed79cfd5a8b5c391b4469346cc0814ad7de517582b27004952319086a316baaf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Jawixv8/aRp7R+XZdk9R8O4pzxMFCOoGYdRj4CYouVSaYLoiKXIEpgK2gv/zs5Kpdq5K1zi0pXDF2l2UUE1Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T07:13:39.567689Z","bundle_sha256":"66566b020299330c2bf9502cba5116057e01ebd845320081fe20648bc07e14d1"}}