{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:YFENQZ2VVYK3FVJVGCBSF7TC76","short_pith_number":"pith:YFENQZ2V","canonical_record":{"source":{"id":"1604.03525","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-12T19:00:07Z","cross_cats_sorted":[],"title_canon_sha256":"b4cfd8895d98ecd2ba3258c48eb101c3e6a39b1569f74f35fabbc220bc54d754","abstract_canon_sha256":"fc6c5353507b5a587f01985cdfb32da2eb7e7c94c5d93bf5440f19c584b49250"},"schema_version":"1.0"},"canonical_sha256":"c148d86755ae15b2d535308322fe62ff9f9dbc498bfa99643dc595e2dec09b12","source":{"kind":"arxiv","id":"1604.03525","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.03525","created_at":"2026-05-18T00:57:31Z"},{"alias_kind":"arxiv_version","alias_value":"1604.03525v2","created_at":"2026-05-18T00:57:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.03525","created_at":"2026-05-18T00:57:31Z"},{"alias_kind":"pith_short_12","alias_value":"YFENQZ2VVYK3","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YFENQZ2VVYK3FVJV","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YFENQZ2V","created_at":"2026-05-18T12:30:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:YFENQZ2VVYK3FVJVGCBSF7TC76","target":"record","payload":{"canonical_record":{"source":{"id":"1604.03525","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-12T19:00:07Z","cross_cats_sorted":[],"title_canon_sha256":"b4cfd8895d98ecd2ba3258c48eb101c3e6a39b1569f74f35fabbc220bc54d754","abstract_canon_sha256":"fc6c5353507b5a587f01985cdfb32da2eb7e7c94c5d93bf5440f19c584b49250"},"schema_version":"1.0"},"canonical_sha256":"c148d86755ae15b2d535308322fe62ff9f9dbc498bfa99643dc595e2dec09b12","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:57:31.177582Z","signature_b64":"pq65n3W8smhA2DrItIvRcZ/V5T+JIvxRzgfD9Rr3iblJ4mFq9I/sjID62A7+38qNZcbzR4+QeYKLAxbGicQhCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c148d86755ae15b2d535308322fe62ff9f9dbc498bfa99643dc595e2dec09b12","last_reissued_at":"2026-05-18T00:57:31.177210Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:57:31.177210Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.03525","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:57:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wdum8X77vmyajoP3awkBae0cbj6uGCBBPpjFkrinoA7//6QLG6pGGto/kXkg4l8JImgXJdpOJWM526WeXXqKBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T13:40:23.966578Z"},"content_sha256":"c7a2ece8dce6793cd0dc41090c15fe7b5aa0bba3e711ac6e5be329367b212360","schema_version":"1.0","event_id":"sha256:c7a2ece8dce6793cd0dc41090c15fe7b5aa0bba3e711ac6e5be329367b212360"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:YFENQZ2VVYK3FVJVGCBSF7TC76","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"EPW: Electron-phonon coupling, transport and superconducting properties using maximally localized Wannier functions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Carla Verdi, Elena R. Margine, Feliciano Giustino, Samuel Ponc\\'e","submitted_at":"2016-04-12T19:00:07Z","abstract_excerpt":"The EPW (Electron-Phonon coupling using Wannier functions) software is a Fortran90 code that uses density-functional perturbation theory and maximally localized Wannier functions for computing electron-phonon couplings and related properties in solids accurately and efficiently. The EPW v4 program can be used to compute electron and phonon self-energies, linewidths, electron-phonon scattering rates, electron-phonon coupling strengths, transport spectral functions, electronic velocities, resistivity, anisotropic superconducting gaps and spectral functions within the Migdal-Eliashberg theory. Th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.03525","kind":"arxiv","version":2},"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":"2026-05-18T00:57:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XKUt5986I2mLDUlQ6tf1k81ylNJU/zC4eK/5yXWK1Wv79vdvwqMaV69OCfpwIXJiKq6vyDfwua/w/6uFQT6LAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T13:40:23.966930Z"},"content_sha256":"bac201f5fe6250500d44c73a3508aed2ba78df35fbef5c8548ed8f13285b9711","schema_version":"1.0","event_id":"sha256:bac201f5fe6250500d44c73a3508aed2ba78df35fbef5c8548ed8f13285b9711"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YFENQZ2VVYK3FVJVGCBSF7TC76/bundle.json","state_url":"https://pith.science/pith/YFENQZ2VVYK3FVJVGCBSF7TC76/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YFENQZ2VVYK3FVJVGCBSF7TC76/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":"2026-05-21T13:40:23Z","links":{"resolver":"https://pith.science/pith/YFENQZ2VVYK3FVJVGCBSF7TC76","bundle":"https://pith.science/pith/YFENQZ2VVYK3FVJVGCBSF7TC76/bundle.json","state":"https://pith.science/pith/YFENQZ2VVYK3FVJVGCBSF7TC76/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YFENQZ2VVYK3FVJVGCBSF7TC76/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:YFENQZ2VVYK3FVJVGCBSF7TC76","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":"fc6c5353507b5a587f01985cdfb32da2eb7e7c94c5d93bf5440f19c584b49250","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-12T19:00:07Z","title_canon_sha256":"b4cfd8895d98ecd2ba3258c48eb101c3e6a39b1569f74f35fabbc220bc54d754"},"schema_version":"1.0","source":{"id":"1604.03525","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.03525","created_at":"2026-05-18T00:57:31Z"},{"alias_kind":"arxiv_version","alias_value":"1604.03525v2","created_at":"2026-05-18T00:57:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.03525","created_at":"2026-05-18T00:57:31Z"},{"alias_kind":"pith_short_12","alias_value":"YFENQZ2VVYK3","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YFENQZ2VVYK3FVJV","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YFENQZ2V","created_at":"2026-05-18T12:30:53Z"}],"graph_snapshots":[{"event_id":"sha256:bac201f5fe6250500d44c73a3508aed2ba78df35fbef5c8548ed8f13285b9711","target":"graph","created_at":"2026-05-18T00:57:31Z","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":"The EPW (Electron-Phonon coupling using Wannier functions) software is a Fortran90 code that uses density-functional perturbation theory and maximally localized Wannier functions for computing electron-phonon couplings and related properties in solids accurately and efficiently. The EPW v4 program can be used to compute electron and phonon self-energies, linewidths, electron-phonon scattering rates, electron-phonon coupling strengths, transport spectral functions, electronic velocities, resistivity, anisotropic superconducting gaps and spectral functions within the Migdal-Eliashberg theory. Th","authors_text":"Carla Verdi, Elena R. Margine, Feliciano Giustino, Samuel Ponc\\'e","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-12T19:00:07Z","title":"EPW: Electron-phonon coupling, transport and superconducting properties using maximally localized Wannier functions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.03525","kind":"arxiv","version":2},"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:c7a2ece8dce6793cd0dc41090c15fe7b5aa0bba3e711ac6e5be329367b212360","target":"record","created_at":"2026-05-18T00:57:31Z","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":"fc6c5353507b5a587f01985cdfb32da2eb7e7c94c5d93bf5440f19c584b49250","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-12T19:00:07Z","title_canon_sha256":"b4cfd8895d98ecd2ba3258c48eb101c3e6a39b1569f74f35fabbc220bc54d754"},"schema_version":"1.0","source":{"id":"1604.03525","kind":"arxiv","version":2}},"canonical_sha256":"c148d86755ae15b2d535308322fe62ff9f9dbc498bfa99643dc595e2dec09b12","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c148d86755ae15b2d535308322fe62ff9f9dbc498bfa99643dc595e2dec09b12","first_computed_at":"2026-05-18T00:57:31.177210Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:57:31.177210Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pq65n3W8smhA2DrItIvRcZ/V5T+JIvxRzgfD9Rr3iblJ4mFq9I/sjID62A7+38qNZcbzR4+QeYKLAxbGicQhCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:57:31.177582Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.03525","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c7a2ece8dce6793cd0dc41090c15fe7b5aa0bba3e711ac6e5be329367b212360","sha256:bac201f5fe6250500d44c73a3508aed2ba78df35fbef5c8548ed8f13285b9711"],"state_sha256":"516f7818a2a4bbb20d697673ad3cb7e60c96d152aace4efb070984accf7b2f85"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ClU23qWd+hlzpzPPWoU2kzJOB/FlsFEJ0aATnXRbnzruHFVF4W3kz5jgdZidAkUquFWT9pz4obLNQGA1bD4OAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T13:40:23.969214Z","bundle_sha256":"db5ce044279893ad0602280af642870226268d4901e233991aeac78289a9ac07"}}