{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:XTCWSSOXMU6AWZSFLYFJMOO3HO","short_pith_number":"pith:XTCWSSOX","canonical_record":{"source":{"id":"1902.03837","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-02-11T12:04:35Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"ea5e72b6443fbfe4b74389ee6ff9aa4cacb7e9e9ec9794e946538c70b8971141","abstract_canon_sha256":"e468d2274196676fa02fcc6ab79db565ac3c635862b468daf89310573f44a43d"},"schema_version":"1.0"},"canonical_sha256":"bcc56949d7653c0b66455e0a9639db3b9e40988d59bd9f2c70aed37bf1e5d2dd","source":{"kind":"arxiv","id":"1902.03837","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.03837","created_at":"2026-05-17T23:43:42Z"},{"alias_kind":"arxiv_version","alias_value":"1902.03837v2","created_at":"2026-05-17T23:43:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.03837","created_at":"2026-05-17T23:43:42Z"},{"alias_kind":"pith_short_12","alias_value":"XTCWSSOXMU6A","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"XTCWSSOXMU6AWZSF","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"XTCWSSOX","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:XTCWSSOXMU6AWZSFLYFJMOO3HO","target":"record","payload":{"canonical_record":{"source":{"id":"1902.03837","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-02-11T12:04:35Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"ea5e72b6443fbfe4b74389ee6ff9aa4cacb7e9e9ec9794e946538c70b8971141","abstract_canon_sha256":"e468d2274196676fa02fcc6ab79db565ac3c635862b468daf89310573f44a43d"},"schema_version":"1.0"},"canonical_sha256":"bcc56949d7653c0b66455e0a9639db3b9e40988d59bd9f2c70aed37bf1e5d2dd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:42.591250Z","signature_b64":"aXf73vBWSFAKoYcxoUuKKkv3ZJaQr5k7Ch+5fkKYwbNKCrDbqS1meUs3fEfIg5fn2L0ZDZhxkSwOQPu9HtpiBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bcc56949d7653c0b66455e0a9639db3b9e40988d59bd9f2c70aed37bf1e5d2dd","last_reissued_at":"2026-05-17T23:43:42.590677Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:42.590677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.03837","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":"2026-05-17T23:43:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t/ubOQQGZ8KKV4rIEcM+FEZAz8nCak/pJRJ+1eqdenCQUKcpeHLLLtX8V5CE0h/QVP6JOJhxIo7ua31mVT1YCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T10:56:31.550593Z"},"content_sha256":"fd6a40c0a0a815134a9970355ef4d8b1ab0426b0748b23b816d7c951748ad1dc","schema_version":"1.0","event_id":"sha256:fd6a40c0a0a815134a9970355ef4d8b1ab0426b0748b23b816d7c951748ad1dc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:XTCWSSOXMU6AWZSFLYFJMOO3HO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Many-body perturbation theory calculations using the yambo code","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Ferretti, A. Marini, A. Marrazzo, A. Molina-S\\'anchez, C. Attaccalite, C. Hogan, D. Sangalli, D. Varsano, E. Cannuccia, F. Affinito, F. Paleari, G. Prandini, H. Miranda, I. Marri, M. Gr\\\"uning, M. Marsili, M.O. Atambo, M. Palummo, P. Bonf\\`a, P. Melo","submitted_at":"2019-02-11T12:04:35Z","abstract_excerpt":"yambo is an open source project aimed at studying excited state properties of condensed matter systems from first principles using many-body methods. As input, yambo requires ground state electronic structure data as computed by density functional theory codes such as quantum-espresso and abinit. yambo's capabilities include the calculation of linear response quantities (both independent-particle and including electron-hole interactions), quasi-particle corrections based on the GW formalism, optical absorption, and other spectroscopic quantities. Here we describe recent developments ranging fr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.03837","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":"2026-05-17T23:43:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DQhVjlXa2xyiaSAg12YPjeBSzh/oo+jFYfEH29FAlM2DCiOk0ifPPlccps0o9Ku+HNt+oCox33svVXIjyvNvDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T10:56:31.550947Z"},"content_sha256":"5763ac0f85fc21675f8653a50706e2b5dc9a64c809dd3dfc0be1bf13436f98ba","schema_version":"1.0","event_id":"sha256:5763ac0f85fc21675f8653a50706e2b5dc9a64c809dd3dfc0be1bf13436f98ba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XTCWSSOXMU6AWZSFLYFJMOO3HO/bundle.json","state_url":"https://pith.science/pith/XTCWSSOXMU6AWZSFLYFJMOO3HO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XTCWSSOXMU6AWZSFLYFJMOO3HO/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":"2026-06-03T10:56:31Z","links":{"resolver":"https://pith.science/pith/XTCWSSOXMU6AWZSFLYFJMOO3HO","bundle":"https://pith.science/pith/XTCWSSOXMU6AWZSFLYFJMOO3HO/bundle.json","state":"https://pith.science/pith/XTCWSSOXMU6AWZSFLYFJMOO3HO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XTCWSSOXMU6AWZSFLYFJMOO3HO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XTCWSSOXMU6AWZSFLYFJMOO3HO","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":"e468d2274196676fa02fcc6ab79db565ac3c635862b468daf89310573f44a43d","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-02-11T12:04:35Z","title_canon_sha256":"ea5e72b6443fbfe4b74389ee6ff9aa4cacb7e9e9ec9794e946538c70b8971141"},"schema_version":"1.0","source":{"id":"1902.03837","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.03837","created_at":"2026-05-17T23:43:42Z"},{"alias_kind":"arxiv_version","alias_value":"1902.03837v2","created_at":"2026-05-17T23:43:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.03837","created_at":"2026-05-17T23:43:42Z"},{"alias_kind":"pith_short_12","alias_value":"XTCWSSOXMU6A","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"XTCWSSOXMU6AWZSF","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"XTCWSSOX","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:5763ac0f85fc21675f8653a50706e2b5dc9a64c809dd3dfc0be1bf13436f98ba","target":"graph","created_at":"2026-05-17T23:43:42Z","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":"yambo is an open source project aimed at studying excited state properties of condensed matter systems from first principles using many-body methods. As input, yambo requires ground state electronic structure data as computed by density functional theory codes such as quantum-espresso and abinit. yambo's capabilities include the calculation of linear response quantities (both independent-particle and including electron-hole interactions), quasi-particle corrections based on the GW formalism, optical absorption, and other spectroscopic quantities. Here we describe recent developments ranging fr","authors_text":"A. Ferretti, A. Marini, A. Marrazzo, A. Molina-S\\'anchez, C. Attaccalite, C. Hogan, D. Sangalli, D. Varsano, E. Cannuccia, F. Affinito, F. Paleari, G. Prandini, H. Miranda, I. Marri, M. Gr\\\"uning, M. Marsili, M.O. Atambo, M. Palummo, P. Bonf\\`a, P. Melo","cross_cats":["physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-02-11T12:04:35Z","title":"Many-body perturbation theory calculations using the yambo code"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.03837","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:fd6a40c0a0a815134a9970355ef4d8b1ab0426b0748b23b816d7c951748ad1dc","target":"record","created_at":"2026-05-17T23:43:42Z","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":"e468d2274196676fa02fcc6ab79db565ac3c635862b468daf89310573f44a43d","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-02-11T12:04:35Z","title_canon_sha256":"ea5e72b6443fbfe4b74389ee6ff9aa4cacb7e9e9ec9794e946538c70b8971141"},"schema_version":"1.0","source":{"id":"1902.03837","kind":"arxiv","version":2}},"canonical_sha256":"bcc56949d7653c0b66455e0a9639db3b9e40988d59bd9f2c70aed37bf1e5d2dd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bcc56949d7653c0b66455e0a9639db3b9e40988d59bd9f2c70aed37bf1e5d2dd","first_computed_at":"2026-05-17T23:43:42.590677Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:42.590677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aXf73vBWSFAKoYcxoUuKKkv3ZJaQr5k7Ch+5fkKYwbNKCrDbqS1meUs3fEfIg5fn2L0ZDZhxkSwOQPu9HtpiBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:42.591250Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.03837","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fd6a40c0a0a815134a9970355ef4d8b1ab0426b0748b23b816d7c951748ad1dc","sha256:5763ac0f85fc21675f8653a50706e2b5dc9a64c809dd3dfc0be1bf13436f98ba"],"state_sha256":"6cf67b51a0f89b2f2e77b695e532844c79764b54b3f153f65eda0806414bf297"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x/JbZKKWCY6YysZtBa01rGj24WXQfXbd2CYseUQnI6BHoYBFs/Cqx9ZvEmZWdrYP2P3GMIEPuDpswwmbx4d4BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T10:56:31.553184Z","bundle_sha256":"5d3da865e3fd3e335543742ddfbef0b8dfa62ac33607616881798bc91f3dc38b"}}