{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:4EMK5KKF4LJGOCMOWWJDEGDP3X","short_pith_number":"pith:4EMK5KKF","canonical_record":{"source":{"id":"2605.14898","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-14T14:38:59Z","cross_cats_sorted":[],"title_canon_sha256":"d392719387897eab78db26c750d4b095bf974c9465738b05ce410fa606d79ced","abstract_canon_sha256":"61c90ad3f89849b8782af9a4c9caa1a9ad5cd556f3dba1fe2ae2df6a9b1b197a"},"schema_version":"1.0"},"canonical_sha256":"e118aea945e2d267098eb59232186fddff8403df5bf4dfbe788267e6cbdac62f","source":{"kind":"arxiv","id":"2605.14898","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.14898","created_at":"2026-05-17T23:38:55Z"},{"alias_kind":"arxiv_version","alias_value":"2605.14898v1","created_at":"2026-05-17T23:38:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.14898","created_at":"2026-05-17T23:38:55Z"},{"alias_kind":"pith_short_12","alias_value":"4EMK5KKF4LJG","created_at":"2026-05-18T12:33:37Z"},{"alias_kind":"pith_short_16","alias_value":"4EMK5KKF4LJGOCMO","created_at":"2026-05-18T12:33:37Z"},{"alias_kind":"pith_short_8","alias_value":"4EMK5KKF","created_at":"2026-05-18T12:33:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:4EMK5KKF4LJGOCMOWWJDEGDP3X","target":"record","payload":{"canonical_record":{"source":{"id":"2605.14898","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-14T14:38:59Z","cross_cats_sorted":[],"title_canon_sha256":"d392719387897eab78db26c750d4b095bf974c9465738b05ce410fa606d79ced","abstract_canon_sha256":"61c90ad3f89849b8782af9a4c9caa1a9ad5cd556f3dba1fe2ae2df6a9b1b197a"},"schema_version":"1.0"},"canonical_sha256":"e118aea945e2d267098eb59232186fddff8403df5bf4dfbe788267e6cbdac62f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:38:55.879765Z","signature_b64":"ycTv0XAWe3xJsxVo/HmWJwMwi2XF0LXLrOS48cyb1KicIt2UI2YJcg37WM4xd+/VR+Sz0zHGnGUgjHpUAjWeCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e118aea945e2d267098eb59232186fddff8403df5bf4dfbe788267e6cbdac62f","last_reissued_at":"2026-05-17T23:38:55.879265Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:38:55.879265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.14898","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":"2026-05-17T23:38:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"82v/c+ue2B7UcfV1AYeeKyhKwHpBDkuG7lzArc3VLTpnqrOPcd5AJuR2F/ptnRUwqOqlknkrif1Irz86wbp3Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:55:59.664847Z"},"content_sha256":"a39117b8a437a27f0bc01a85f191ce7237ac25ba4d324ee50df89e714e4abc92","schema_version":"1.0","event_id":"sha256:a39117b8a437a27f0bc01a85f191ce7237ac25ba4d324ee50df89e714e4abc92"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:4EMK5KKF4LJGOCMOWWJDEGDP3X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Generative reconstruction of 2D and 3D polycrystalline microstructures using symmetrized hyperspherical harmonics","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alexander Ra{\\ss}loff, Ali R. Safi, Benjamin Klusemann, Markus K\\\"astner, Paul Seibert, Santiago Benito","submitted_at":"2026-05-14T14:38:59Z","abstract_excerpt":"Establishing structure-property linkages in polycrystalline materials requires representative two- (2D) and three- (3D) dimensional microstructural inputs for full-field simulations. A core objective of microstructure characterization and reconstruction is the generative synthesis of 2D and 3D microstructures that reflect a target statistical ensemble using limited 2D data as a reference. This work introduces an orientation-based differentiable microstructure characterization and reconstruction framework, implemented in MCRpy, to perform reconstructions of voxelized images. Unit quaternions in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.14898","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":""},"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":"2026-05-17T23:38:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K4OgG/oAvkmyohpXT0lvvXUcSjE8dAGJ0ocgRyA2HYR+Pm+FCmi0/yD5DbCUHaFWVgkhu60zPW8szWcueNdYAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:55:59.665188Z"},"content_sha256":"ff418b35964aa22150857b7c73aac8d3ea34a32901f946ec9467c1f796c2650d","schema_version":"1.0","event_id":"sha256:ff418b35964aa22150857b7c73aac8d3ea34a32901f946ec9467c1f796c2650d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4EMK5KKF4LJGOCMOWWJDEGDP3X/bundle.json","state_url":"https://pith.science/pith/4EMK5KKF4LJGOCMOWWJDEGDP3X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4EMK5KKF4LJGOCMOWWJDEGDP3X/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":"2026-06-01T17:55:59Z","links":{"resolver":"https://pith.science/pith/4EMK5KKF4LJGOCMOWWJDEGDP3X","bundle":"https://pith.science/pith/4EMK5KKF4LJGOCMOWWJDEGDP3X/bundle.json","state":"https://pith.science/pith/4EMK5KKF4LJGOCMOWWJDEGDP3X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4EMK5KKF4LJGOCMOWWJDEGDP3X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:4EMK5KKF4LJGOCMOWWJDEGDP3X","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":"61c90ad3f89849b8782af9a4c9caa1a9ad5cd556f3dba1fe2ae2df6a9b1b197a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-14T14:38:59Z","title_canon_sha256":"d392719387897eab78db26c750d4b095bf974c9465738b05ce410fa606d79ced"},"schema_version":"1.0","source":{"id":"2605.14898","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.14898","created_at":"2026-05-17T23:38:55Z"},{"alias_kind":"arxiv_version","alias_value":"2605.14898v1","created_at":"2026-05-17T23:38:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.14898","created_at":"2026-05-17T23:38:55Z"},{"alias_kind":"pith_short_12","alias_value":"4EMK5KKF4LJG","created_at":"2026-05-18T12:33:37Z"},{"alias_kind":"pith_short_16","alias_value":"4EMK5KKF4LJGOCMO","created_at":"2026-05-18T12:33:37Z"},{"alias_kind":"pith_short_8","alias_value":"4EMK5KKF","created_at":"2026-05-18T12:33:37Z"}],"graph_snapshots":[{"event_id":"sha256:ff418b35964aa22150857b7c73aac8d3ea34a32901f946ec9467c1f796c2650d","target":"graph","created_at":"2026-05-17T23:38:55Z","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":"Establishing structure-property linkages in polycrystalline materials requires representative two- (2D) and three- (3D) dimensional microstructural inputs for full-field simulations. A core objective of microstructure characterization and reconstruction is the generative synthesis of 2D and 3D microstructures that reflect a target statistical ensemble using limited 2D data as a reference. This work introduces an orientation-based differentiable microstructure characterization and reconstruction framework, implemented in MCRpy, to perform reconstructions of voxelized images. Unit quaternions in","authors_text":"Alexander Ra{\\ss}loff, Ali R. Safi, Benjamin Klusemann, Markus K\\\"astner, Paul Seibert, Santiago Benito","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-14T14:38:59Z","title":"Generative reconstruction of 2D and 3D polycrystalline microstructures using symmetrized hyperspherical harmonics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.14898","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:a39117b8a437a27f0bc01a85f191ce7237ac25ba4d324ee50df89e714e4abc92","target":"record","created_at":"2026-05-17T23:38:55Z","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":"61c90ad3f89849b8782af9a4c9caa1a9ad5cd556f3dba1fe2ae2df6a9b1b197a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-14T14:38:59Z","title_canon_sha256":"d392719387897eab78db26c750d4b095bf974c9465738b05ce410fa606d79ced"},"schema_version":"1.0","source":{"id":"2605.14898","kind":"arxiv","version":1}},"canonical_sha256":"e118aea945e2d267098eb59232186fddff8403df5bf4dfbe788267e6cbdac62f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e118aea945e2d267098eb59232186fddff8403df5bf4dfbe788267e6cbdac62f","first_computed_at":"2026-05-17T23:38:55.879265Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:38:55.879265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ycTv0XAWe3xJsxVo/HmWJwMwi2XF0LXLrOS48cyb1KicIt2UI2YJcg37WM4xd+/VR+Sz0zHGnGUgjHpUAjWeCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:38:55.879765Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.14898","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a39117b8a437a27f0bc01a85f191ce7237ac25ba4d324ee50df89e714e4abc92","sha256:ff418b35964aa22150857b7c73aac8d3ea34a32901f946ec9467c1f796c2650d"],"state_sha256":"5f11dcd902fb5ecd06cb8bee570f4dc212275a083e3b4fe03098a523ae3e9fa5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MeV21KJCERrMU0iODy1zkRUkg9xhKJHxFV5Oq4TKT3RjSUBKCzACppwB1gB2UofFYAz8rQjVEf89qBAycgdlBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T17:55:59.667089Z","bundle_sha256":"aab33e7844fdb26265218f8ba538c3dfa6b97ea97a33b77582bacf1dc55522e2"}}