{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:HNMCD43K24OAU5AJ5CYS5IHFFD","short_pith_number":"pith:HNMCD43K","canonical_record":{"source":{"id":"2605.21650","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-20T19:04:43Z","cross_cats_sorted":[],"title_canon_sha256":"18b5aa2b11d66b3857d4af75dec4bea3addc6b5b36c527be87ad274f773d7fed","abstract_canon_sha256":"50ffbd83bd4115c1b7ff51048f231a8d90f41a6bfd9ee2f84e3a5be0707cd1c8"},"schema_version":"1.0"},"canonical_sha256":"3b5821f36ad71c0a7409e8b12ea0e528ca17af35ce1ad187a4b2da5619a1087d","source":{"kind":"arxiv","id":"2605.21650","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.21650","created_at":"2026-05-22T01:03:26Z"},{"alias_kind":"arxiv_version","alias_value":"2605.21650v1","created_at":"2026-05-22T01:03:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.21650","created_at":"2026-05-22T01:03:26Z"},{"alias_kind":"pith_short_12","alias_value":"HNMCD43K24OA","created_at":"2026-05-22T01:03:26Z"},{"alias_kind":"pith_short_16","alias_value":"HNMCD43K24OAU5AJ","created_at":"2026-05-22T01:03:26Z"},{"alias_kind":"pith_short_8","alias_value":"HNMCD43K","created_at":"2026-05-22T01:03:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:HNMCD43K24OAU5AJ5CYS5IHFFD","target":"record","payload":{"canonical_record":{"source":{"id":"2605.21650","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-20T19:04:43Z","cross_cats_sorted":[],"title_canon_sha256":"18b5aa2b11d66b3857d4af75dec4bea3addc6b5b36c527be87ad274f773d7fed","abstract_canon_sha256":"50ffbd83bd4115c1b7ff51048f231a8d90f41a6bfd9ee2f84e3a5be0707cd1c8"},"schema_version":"1.0"},"canonical_sha256":"3b5821f36ad71c0a7409e8b12ea0e528ca17af35ce1ad187a4b2da5619a1087d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-22T01:03:26.846071Z","signature_b64":"egFJQtLeKYNeaAgngoecWf6ZKdGxnmwrkBG6s1zYMP++AzNPN10vATc3+Q3J57qFjKOpWFfJR441GWxpjBtDBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3b5821f36ad71c0a7409e8b12ea0e528ca17af35ce1ad187a4b2da5619a1087d","last_reissued_at":"2026-05-22T01:03:26.845568Z","signature_status":"signed_v1","first_computed_at":"2026-05-22T01:03:26.845568Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.21650","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":"2026-05-22T01:03:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YPmJHZpcuWk4l0McrBKANMzv5ojC0jl1oSpg2xGq4ayJrL0pbhdi7TC2l5DI0rASgYgFk5GPn2FjMNO7C6m1BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T22:36:47.568573Z"},"content_sha256":"f642ce644e1fce411e74beb634978439d0767cf621d4571ac56df24c5aa4ba5e","schema_version":"1.0","event_id":"sha256:f642ce644e1fce411e74beb634978439d0767cf621d4571ac56df24c5aa4ba5e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:HNMCD43K24OAU5AJ5CYS5IHFFD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Backward Mapping from Device Targets to Chemical Genomes for Interpretable Discovery of Phase-Stable Lead-Free Double Perovskites with DFT-Validated Design Rules","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Md. Mostaq Ahmed Himel, Md Rafiul Alam Roni, Md. Zahid Hassan, Muhammad Harussani Moklis, Nafis Ahtasum, Sohanur Rahman Sohan","submitted_at":"2026-05-20T19:04:43Z","abstract_excerpt":"Lead-free halide double perovskites are promising alternatives to Pb-based semiconductors, but their discovery is challenging because structural formability, thermodynamic stability, band-gap placement, optical-transition strength, dielectric screening, and carrier transport must all be satisfied within the vast A2BB'X6 space. We present a backward-mapping, genome-guided framework linking device-level targets to chemically interpretable descriptor families for Pb-free double-perovskite discovery. From 13,088 charge-balanced compositions, we apply a halide-aware workflow integrating geometric f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.21650","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/2605.21650/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":"2026-05-22T01:03:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RShwikt7RoIc9jvHW67qSBoRPhoDaqz1XRQdAPkxDbLmY5xyN56fRek4pm2Wn0Ax1mwwXQ+FXhGjYCQrAK+7Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T22:36:47.569629Z"},"content_sha256":"f2cad50ac827c6c4322ec167047a3cc004b4e72a4a50f3230f2702783dae7997","schema_version":"1.0","event_id":"sha256:f2cad50ac827c6c4322ec167047a3cc004b4e72a4a50f3230f2702783dae7997"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HNMCD43K24OAU5AJ5CYS5IHFFD/bundle.json","state_url":"https://pith.science/pith/HNMCD43K24OAU5AJ5CYS5IHFFD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HNMCD43K24OAU5AJ5CYS5IHFFD/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":"2026-06-10T22:36:47Z","links":{"resolver":"https://pith.science/pith/HNMCD43K24OAU5AJ5CYS5IHFFD","bundle":"https://pith.science/pith/HNMCD43K24OAU5AJ5CYS5IHFFD/bundle.json","state":"https://pith.science/pith/HNMCD43K24OAU5AJ5CYS5IHFFD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HNMCD43K24OAU5AJ5CYS5IHFFD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:HNMCD43K24OAU5AJ5CYS5IHFFD","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":"50ffbd83bd4115c1b7ff51048f231a8d90f41a6bfd9ee2f84e3a5be0707cd1c8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-20T19:04:43Z","title_canon_sha256":"18b5aa2b11d66b3857d4af75dec4bea3addc6b5b36c527be87ad274f773d7fed"},"schema_version":"1.0","source":{"id":"2605.21650","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.21650","created_at":"2026-05-22T01:03:26Z"},{"alias_kind":"arxiv_version","alias_value":"2605.21650v1","created_at":"2026-05-22T01:03:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.21650","created_at":"2026-05-22T01:03:26Z"},{"alias_kind":"pith_short_12","alias_value":"HNMCD43K24OA","created_at":"2026-05-22T01:03:26Z"},{"alias_kind":"pith_short_16","alias_value":"HNMCD43K24OAU5AJ","created_at":"2026-05-22T01:03:26Z"},{"alias_kind":"pith_short_8","alias_value":"HNMCD43K","created_at":"2026-05-22T01:03:26Z"}],"graph_snapshots":[{"event_id":"sha256:f2cad50ac827c6c4322ec167047a3cc004b4e72a4a50f3230f2702783dae7997","target":"graph","created_at":"2026-05-22T01:03:26Z","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/2605.21650/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Lead-free halide double perovskites are promising alternatives to Pb-based semiconductors, but their discovery is challenging because structural formability, thermodynamic stability, band-gap placement, optical-transition strength, dielectric screening, and carrier transport must all be satisfied within the vast A2BB'X6 space. We present a backward-mapping, genome-guided framework linking device-level targets to chemically interpretable descriptor families for Pb-free double-perovskite discovery. From 13,088 charge-balanced compositions, we apply a halide-aware workflow integrating geometric f","authors_text":"Md. Mostaq Ahmed Himel, Md Rafiul Alam Roni, Md. Zahid Hassan, Muhammad Harussani Moklis, Nafis Ahtasum, Sohanur Rahman Sohan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-20T19:04:43Z","title":"Backward Mapping from Device Targets to Chemical Genomes for Interpretable Discovery of Phase-Stable Lead-Free Double Perovskites with DFT-Validated Design Rules"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.21650","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:f642ce644e1fce411e74beb634978439d0767cf621d4571ac56df24c5aa4ba5e","target":"record","created_at":"2026-05-22T01:03:26Z","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":"50ffbd83bd4115c1b7ff51048f231a8d90f41a6bfd9ee2f84e3a5be0707cd1c8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-20T19:04:43Z","title_canon_sha256":"18b5aa2b11d66b3857d4af75dec4bea3addc6b5b36c527be87ad274f773d7fed"},"schema_version":"1.0","source":{"id":"2605.21650","kind":"arxiv","version":1}},"canonical_sha256":"3b5821f36ad71c0a7409e8b12ea0e528ca17af35ce1ad187a4b2da5619a1087d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3b5821f36ad71c0a7409e8b12ea0e528ca17af35ce1ad187a4b2da5619a1087d","first_computed_at":"2026-05-22T01:03:26.845568Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-22T01:03:26.845568Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"egFJQtLeKYNeaAgngoecWf6ZKdGxnmwrkBG6s1zYMP++AzNPN10vATc3+Q3J57qFjKOpWFfJR441GWxpjBtDBQ==","signature_status":"signed_v1","signed_at":"2026-05-22T01:03:26.846071Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.21650","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f642ce644e1fce411e74beb634978439d0767cf621d4571ac56df24c5aa4ba5e","sha256:f2cad50ac827c6c4322ec167047a3cc004b4e72a4a50f3230f2702783dae7997"],"state_sha256":"4f34ee6e4b8beb88ee504447ccbfa0852eb0f668efb282dace9687a856b2ea34"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Iw2IvBolMO63TIb81xGaYUTa9yva4AsxWvzI1n5XXtXKHM11NjH0E6/ZJkKgW2dc0hUZNmid4i6ys6BwFiy+Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T22:36:47.573783Z","bundle_sha256":"16218e64d118abf6e7477280ac4150ec7feefb84c9d1acf1fdb49ee965a23846"}}