{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:FLR6UHCUCDRNE47KBY5H63KK67","short_pith_number":"pith:FLR6UHCU","canonical_record":{"source":{"id":"2303.07438","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-03-13T19:35:54Z","cross_cats_sorted":["cond-mat.mtrl-sci","cs.CV"],"title_canon_sha256":"a9bd4f3d4565069c9ea96ec4836ad3a502d19105a94aa8ffb14a080e71a8af1e","abstract_canon_sha256":"fd34500b1d4cd9773e7bf3d5f774d633f237e30c6931dcbfbfa55b96fbfacd63"},"schema_version":"1.0"},"canonical_sha256":"2ae3ea1c5410e2d273ea0e3a7f6d4af7d3821378613c7556970734bd3c257391","source":{"kind":"arxiv","id":"2303.07438","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.07438","created_at":"2026-07-05T05:53:53Z"},{"alias_kind":"arxiv_version","alias_value":"2303.07438v1","created_at":"2026-07-05T05:53:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.07438","created_at":"2026-07-05T05:53:53Z"},{"alias_kind":"pith_short_12","alias_value":"FLR6UHCUCDRN","created_at":"2026-07-05T05:53:53Z"},{"alias_kind":"pith_short_16","alias_value":"FLR6UHCUCDRNE47K","created_at":"2026-07-05T05:53:53Z"},{"alias_kind":"pith_short_8","alias_value":"FLR6UHCU","created_at":"2026-07-05T05:53:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:FLR6UHCUCDRNE47KBY5H63KK67","target":"record","payload":{"canonical_record":{"source":{"id":"2303.07438","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-03-13T19:35:54Z","cross_cats_sorted":["cond-mat.mtrl-sci","cs.CV"],"title_canon_sha256":"a9bd4f3d4565069c9ea96ec4836ad3a502d19105a94aa8ffb14a080e71a8af1e","abstract_canon_sha256":"fd34500b1d4cd9773e7bf3d5f774d633f237e30c6931dcbfbfa55b96fbfacd63"},"schema_version":"1.0"},"canonical_sha256":"2ae3ea1c5410e2d273ea0e3a7f6d4af7d3821378613c7556970734bd3c257391","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:53:53.327463Z","signature_b64":"QbCS63mtsazFIjV1h7l+vnjuLwIl05RX7N3ryHC0D/9cEYm+xszN1C/2HePP+TazI6EQC0FzMVh1boWLCKiCCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2ae3ea1c5410e2d273ea0e3a7f6d4af7d3821378613c7556970734bd3c257391","last_reissued_at":"2026-07-05T05:53:53.326893Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:53:53.326893Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2303.07438","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":"2026-07-05T05:53:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zFJvms0PTebEoaPeHl2/diHsfZQzBtBpV8hh+GW159vJp3gpksvJY904pyNc4Vsn0rd+7VnOiZOxgNzYgKKiCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-20T19:46:49.960072Z"},"content_sha256":"56d7e63f35b52b3f968c2249c2db5846004419e72d12b4e01bae3e61734d6a3f","schema_version":"1.0","event_id":"sha256:56d7e63f35b52b3f968c2249c2db5846004419e72d12b4e01bae3e61734d6a3f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:FLR6UHCUCDRNE47KBY5H63KK67","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Direct Motif Extraction from High Resolution Crystalline STEM Images","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cs.CV"],"primary_cat":"eess.IV","authors_text":"Amel Shamseldeen Ali Alhassan, Benjamin Berkels, Siyuan Zhang","submitted_at":"2023-03-13T19:35:54Z","abstract_excerpt":"During the last decade, automatic data analysis methods concerning different aspects of crystal analysis have been developed, e.g., unsupervised primitive unit cell extraction and automated crystal distortion and defects detection. However, an automatic, unsupervised motif extraction method is still not widely available yet. Here, we propose and demonstrate a novel method for the automatic motif extraction in real space from crystalline images based on a variational approach involving the unit cell projection operator. Due to the non-convex nature of the resulting minimization problem, a multi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.07438","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/2303.07438/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":"2026-07-05T05:53:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fP51yh9Im08G6emF8oDiJgZh6sYIWGjnRgFVajkeEuncZ25NksaK+qNQG7HRq8U55n1EYMOGYdd88RaJ5zv0Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-20T19:46:49.960471Z"},"content_sha256":"4f20b05e446d1b26d0bfe1e2c1126f061a67b352dfa3700d19e5b81d8d6514c1","schema_version":"1.0","event_id":"sha256:4f20b05e446d1b26d0bfe1e2c1126f061a67b352dfa3700d19e5b81d8d6514c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FLR6UHCUCDRNE47KBY5H63KK67/bundle.json","state_url":"https://pith.science/pith/FLR6UHCUCDRNE47KBY5H63KK67/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FLR6UHCUCDRNE47KBY5H63KK67/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":"2026-07-20T19:46:49Z","links":{"resolver":"https://pith.science/pith/FLR6UHCUCDRNE47KBY5H63KK67","bundle":"https://pith.science/pith/FLR6UHCUCDRNE47KBY5H63KK67/bundle.json","state":"https://pith.science/pith/FLR6UHCUCDRNE47KBY5H63KK67/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FLR6UHCUCDRNE47KBY5H63KK67/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:FLR6UHCUCDRNE47KBY5H63KK67","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":"fd34500b1d4cd9773e7bf3d5f774d633f237e30c6931dcbfbfa55b96fbfacd63","cross_cats_sorted":["cond-mat.mtrl-sci","cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-03-13T19:35:54Z","title_canon_sha256":"a9bd4f3d4565069c9ea96ec4836ad3a502d19105a94aa8ffb14a080e71a8af1e"},"schema_version":"1.0","source":{"id":"2303.07438","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.07438","created_at":"2026-07-05T05:53:53Z"},{"alias_kind":"arxiv_version","alias_value":"2303.07438v1","created_at":"2026-07-05T05:53:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.07438","created_at":"2026-07-05T05:53:53Z"},{"alias_kind":"pith_short_12","alias_value":"FLR6UHCUCDRN","created_at":"2026-07-05T05:53:53Z"},{"alias_kind":"pith_short_16","alias_value":"FLR6UHCUCDRNE47K","created_at":"2026-07-05T05:53:53Z"},{"alias_kind":"pith_short_8","alias_value":"FLR6UHCU","created_at":"2026-07-05T05:53:53Z"}],"graph_snapshots":[{"event_id":"sha256:4f20b05e446d1b26d0bfe1e2c1126f061a67b352dfa3700d19e5b81d8d6514c1","target":"graph","created_at":"2026-07-05T05:53:53Z","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/2303.07438/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"During the last decade, automatic data analysis methods concerning different aspects of crystal analysis have been developed, e.g., unsupervised primitive unit cell extraction and automated crystal distortion and defects detection. However, an automatic, unsupervised motif extraction method is still not widely available yet. Here, we propose and demonstrate a novel method for the automatic motif extraction in real space from crystalline images based on a variational approach involving the unit cell projection operator. Due to the non-convex nature of the resulting minimization problem, a multi","authors_text":"Amel Shamseldeen Ali Alhassan, Benjamin Berkels, Siyuan Zhang","cross_cats":["cond-mat.mtrl-sci","cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-03-13T19:35:54Z","title":"Direct Motif Extraction from High Resolution Crystalline STEM Images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.07438","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":"sha256:56d7e63f35b52b3f968c2249c2db5846004419e72d12b4e01bae3e61734d6a3f","target":"record","created_at":"2026-07-05T05:53:53Z","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":"fd34500b1d4cd9773e7bf3d5f774d633f237e30c6931dcbfbfa55b96fbfacd63","cross_cats_sorted":["cond-mat.mtrl-sci","cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2023-03-13T19:35:54Z","title_canon_sha256":"a9bd4f3d4565069c9ea96ec4836ad3a502d19105a94aa8ffb14a080e71a8af1e"},"schema_version":"1.0","source":{"id":"2303.07438","kind":"arxiv","version":1}},"canonical_sha256":"2ae3ea1c5410e2d273ea0e3a7f6d4af7d3821378613c7556970734bd3c257391","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2ae3ea1c5410e2d273ea0e3a7f6d4af7d3821378613c7556970734bd3c257391","first_computed_at":"2026-07-05T05:53:53.326893Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:53:53.326893Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QbCS63mtsazFIjV1h7l+vnjuLwIl05RX7N3ryHC0D/9cEYm+xszN1C/2HePP+TazI6EQC0FzMVh1boWLCKiCCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:53:53.327463Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.07438","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:56d7e63f35b52b3f968c2249c2db5846004419e72d12b4e01bae3e61734d6a3f","sha256:4f20b05e446d1b26d0bfe1e2c1126f061a67b352dfa3700d19e5b81d8d6514c1"],"state_sha256":"a0e994292ee57a7d6e2e82e98d21aa5579c59caf5dbf595eaa523e0ad8975d93"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FeBcASW8r973r3WymLofsDNG0Fldw7S79+S3CZyfeke2gMneInfTwM4bX4q/Z70Rn2SALRG8hyETnvATaOioBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-20T19:46:49.962659Z","bundle_sha256":"55f2e4d8594973e29a67bc43ee98aca64406eeb1bedce673b042cae0b8fe13e8"}}