{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:DTMHGMWN4QLNDA324FOWHN5TNW","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":"d1a9e8e7a9703cbda37ac4c5d6d7500b61c2701859e69b4c732dca15324047c7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-06-10T20:39:43Z","title_canon_sha256":"4bffcddef6f1e7fca18195f003b671038bc6b15fab8b7e5b4f26527191fe251c"},"schema_version":"1.0","source":{"id":"1506.03474","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.03474","created_at":"2026-05-18T01:44:10Z"},{"alias_kind":"arxiv_version","alias_value":"1506.03474v2","created_at":"2026-05-18T01:44:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.03474","created_at":"2026-05-18T01:44:10Z"},{"alias_kind":"pith_short_12","alias_value":"DTMHGMWN4QLN","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"DTMHGMWN4QLNDA32","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"DTMHGMWN","created_at":"2026-05-18T12:29:17Z"}],"graph_snapshots":[{"event_id":"sha256:1fed8e7704160cb2c7e305edb1b4f4ef8ffe9fd6b6378e19209f6d8ad0221368","target":"graph","created_at":"2026-05-18T01:44:10Z","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 Square Kilometre Array (SKA) is called to revolutionise essentially all areas of Astrophysics. With a collecting area of about a square kilometre, the SKA will be a transformational instrument, and its scientific potential will go beyond the interests of astronomers. Its technological challenges and huge cost requires a multinational effort, and Europe has recognised this by putting the SKA on the roadmap of the European Strategy Forum for Research Infrastructures (ESFRI). The Spanish SKA White Book is the result of the coordinated effort of 120 astronomers from 40 different research cente","authors_text":"A. Alberdi, A. Alonso-Herrero, A. Baez-Rubio, A. Del Olmo, A. Fernandez-Soto, A. Fuente, A. Gil de Paz, A. Guijarro, A. J. Castro-Tirado, A. M. Sintes, A. Palau, A. Prieto, A. Sanchez-Monge, A. Usero, A. Vidal-Garcia, B. Ascaso, B.-B. Zhang, B. Garcia-Lorenzo, B. Ruiz-Granados, B. Tercero, C. B. Brook, C. Carrasco-Gonzalez, C. F. Sopuerta, C. Hernandez-Monteagudo, C. Ramos Almeida, C. Sanchez-Contreras, D. Herranz, E. Battaner, E. Florido, E. J. Alfaro, E. Martinez-Gonzalez, E. Perez-Montero, E. Ros, F. Colomer, G. Anglada, G. Busquet, I. Agudo, I. de Gregorio-Monsalvo, I. Jimenez-Serra, I. Marquez, I. Marti-Vidal, I. Negueruela, J. A. Acosta-Pulido, J. A. Font, J. Alcolea, J. A. Pons, J. A. Rubi\\~no-Martin, J. Blasco, J. Casares, J. C. Guirado, J. C. Tello, J.-F. Desmurs, J. F. Gomez, J. Font, J. Gorgas, J. Gorosabel, J. H. Knapen, J. Iglesias-Paramo, J. I. Gonzalez-Serrano, J. Marti, J. Martin-Pintado, J. Masegosa, J. M. Diego, J. M. Girart, J. M. Marcaide, J. M. Marti, J. M. Mayen-Gijon, J. Moldon, J. M. Paredes, J. M. Rodriguez Espinosa, J. M. Solanes, J. M. Torrelles, J. Perea, J. R. Goicoechea, J. Sabater, J. Vilchez, L. Colina, L. Hernandez-Garcia, L. Verdes-Montenegro, M. A. Perez-Torres, M. A. P. Torres, M. C. Toribio, M. D. Caballero-Garcia, M. Gonzalez-Garcia, M. Huertas-Company, M. J. Rioja, M. Mezcua, M. Osorio, M. Perucho, M. Ribo, M. Tafalla, N. Huelamo, N. Rea, O. Gonzalez-Martin, O. Morata, P. Arnalte-Mur, P. G. Perez-Gonzalez, P. Mimica, P. Ramirez-Moreta, P. Vielva, R. A. Lineros, R. Azulay, R. Bachiller, R. Dominguez-Tenreiro, R. Estalella, R. Garcia-Benito, R. Herrero-Illana, R. Sanchez-Ramirez, S. Garcia-Burillo, S. Jeong, S. Migliari, S. Planelles, S. R. Oates, S. Sanchez, U. Lisenfeld, V. Bujarrabal, V. Quilis, Y. Ascasibar, Y.-D. Hu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-06-10T20:39:43Z","title":"The Spanish Square Kilometre Array White Book"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.03474","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:a9f1bb00057e66429c90a54414cbcce366eabd6986fb37e46a8d795cd3e266a0","target":"record","created_at":"2026-05-18T01:44:10Z","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":"d1a9e8e7a9703cbda37ac4c5d6d7500b61c2701859e69b4c732dca15324047c7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-06-10T20:39:43Z","title_canon_sha256":"4bffcddef6f1e7fca18195f003b671038bc6b15fab8b7e5b4f26527191fe251c"},"schema_version":"1.0","source":{"id":"1506.03474","kind":"arxiv","version":2}},"canonical_sha256":"1cd87332cde416d1837ae15d63b7b36d96dce5d70ed4e8fcfe47257d33c5f7a2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1cd87332cde416d1837ae15d63b7b36d96dce5d70ed4e8fcfe47257d33c5f7a2","first_computed_at":"2026-05-18T01:44:10.817696Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:44:10.817696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RAbuXJJv4aquBs1cmxOBhk7UDmDg/CR1/yhUhHBcglvj2trazJg8/mYLlJUaK5Y1a5uZh5NjDVrEfM404HvBCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:44:10.818449Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.03474","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a9f1bb00057e66429c90a54414cbcce366eabd6986fb37e46a8d795cd3e266a0","sha256:1fed8e7704160cb2c7e305edb1b4f4ef8ffe9fd6b6378e19209f6d8ad0221368"],"state_sha256":"da384ad339bb466c30e7512c0074da1878a3a56360059c180ee8c23c0034b977"}