{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:ZKKADUEUU564VJW3E7LXDBVSEB","short_pith_number":"pith:ZKKADUEU","canonical_record":{"source":{"id":"2603.26719","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2026-03-18T16:38:24Z","cross_cats_sorted":[],"title_canon_sha256":"9fc7aa4b3ee6d00470d66f5d8b1a790a3f474c6f65783c6709b2cbed8050e509","abstract_canon_sha256":"28c8427b7fb88e8e1cd8cf3d3a3773e9a0a63cffa4e77809e2145eb2c25a1acf"},"schema_version":"1.0"},"canonical_sha256":"ca9401d094a77dcaa6db27d77186b220703629d213e9bee05c39e7fd41ac603c","source":{"kind":"arxiv","id":"2603.26719","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2603.26719","created_at":"2026-06-09T02:07:25Z"},{"alias_kind":"arxiv_version","alias_value":"2603.26719v2","created_at":"2026-06-09T02:07:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2603.26719","created_at":"2026-06-09T02:07:25Z"},{"alias_kind":"pith_short_12","alias_value":"ZKKADUEUU564","created_at":"2026-06-09T02:07:25Z"},{"alias_kind":"pith_short_16","alias_value":"ZKKADUEUU564VJW3","created_at":"2026-06-09T02:07:25Z"},{"alias_kind":"pith_short_8","alias_value":"ZKKADUEU","created_at":"2026-06-09T02:07:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:ZKKADUEUU564VJW3E7LXDBVSEB","target":"record","payload":{"canonical_record":{"source":{"id":"2603.26719","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2026-03-18T16:38:24Z","cross_cats_sorted":[],"title_canon_sha256":"9fc7aa4b3ee6d00470d66f5d8b1a790a3f474c6f65783c6709b2cbed8050e509","abstract_canon_sha256":"28c8427b7fb88e8e1cd8cf3d3a3773e9a0a63cffa4e77809e2145eb2c25a1acf"},"schema_version":"1.0"},"canonical_sha256":"ca9401d094a77dcaa6db27d77186b220703629d213e9bee05c39e7fd41ac603c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-09T02:07:25.405353Z","signature_b64":"K7jkD2TyuCxJqcbl63q8S8fSE4d7tQ3Nz8rEPejHE2zdhLQ56w5QWUEny14CVuejYlC+evEISrsc/MYM0QJcAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ca9401d094a77dcaa6db27d77186b220703629d213e9bee05c39e7fd41ac603c","last_reissued_at":"2026-06-09T02:07:25.404252Z","signature_status":"signed_v1","first_computed_at":"2026-06-09T02:07:25.404252Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2603.26719","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":"2026-06-09T02:07:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C0t47r1ZXdlcJtLe1yutZ7SHDBjL2G7zR7vuDT195+vUXFYqhHZtpyzIds6SewDATMhDgE8XP6TeUyi6zyPNBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T00:21:01.259040Z"},"content_sha256":"eebe82ac5dab4a652c36d9df06e41786896b773e968dddda30d10cc2ef067575","schema_version":"1.0","event_id":"sha256:eebe82ac5dab4a652c36d9df06e41786896b773e968dddda30d10cc2ef067575"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:ZKKADUEUU564VJW3E7LXDBVSEB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Diverse efforts in the same direction: A multi-model comparison of climate-neutrality power sector pathways for the Nordic countries","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.soc-ph","authors_text":"Christian Breyer, Dmitrii Bogdanov, Eirik Ogner J{\\aa}stad, Emir Fejzi\\'c, Guillermo Valenzuela-Venegas, Ida Gr{\\ae}sted Jensen, Jean-Nicolas Louis, Marianne Zeyringer, Marie M\\\"unster, Maximilian Roithner, Miguel Chang, Oskar V{\\aa}ger\\\"o, Pernille Seljom, Rasmus Bramstoft, Will Usher","submitted_at":"2026-03-18T16:38:24Z","abstract_excerpt":"The Nordic countries have adopted ambitious climate targets that imply far-reaching transformations of their power sectors, making energy system modelling a central input to long-term policy analysis. At the same time, comparing results across studies remains challenging due to differences in model structure, assumptions, and data. This paper presents a comparative assessment of Nordic power sector transition pathways across four Nordic countries, based on eight structurally diverse energy system models analysed without harmonising inputs in order to reflect prevailing modelling practice. The "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2603.26719","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2603.26719/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":"2026-06-09T02:07:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N57AYEKa01HT/jgR3J9kHKdhCwWZxhKNmL4bi1+Kyl2PR0dCclxvwlxOzRzKF3eGcmvs3uhKv02q2XlyWVw+Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T00:21:01.259801Z"},"content_sha256":"ba0aae7d66eca2182d6a85f14b81491f85e6c1b991c990db691807233b31471c","schema_version":"1.0","event_id":"sha256:ba0aae7d66eca2182d6a85f14b81491f85e6c1b991c990db691807233b31471c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZKKADUEUU564VJW3E7LXDBVSEB/bundle.json","state_url":"https://pith.science/pith/ZKKADUEUU564VJW3E7LXDBVSEB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZKKADUEUU564VJW3E7LXDBVSEB/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":"2026-07-03T00:21:01Z","links":{"resolver":"https://pith.science/pith/ZKKADUEUU564VJW3E7LXDBVSEB","bundle":"https://pith.science/pith/ZKKADUEUU564VJW3E7LXDBVSEB/bundle.json","state":"https://pith.science/pith/ZKKADUEUU564VJW3E7LXDBVSEB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZKKADUEUU564VJW3E7LXDBVSEB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:ZKKADUEUU564VJW3E7LXDBVSEB","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":"28c8427b7fb88e8e1cd8cf3d3a3773e9a0a63cffa4e77809e2145eb2c25a1acf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2026-03-18T16:38:24Z","title_canon_sha256":"9fc7aa4b3ee6d00470d66f5d8b1a790a3f474c6f65783c6709b2cbed8050e509"},"schema_version":"1.0","source":{"id":"2603.26719","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2603.26719","created_at":"2026-06-09T02:07:25Z"},{"alias_kind":"arxiv_version","alias_value":"2603.26719v2","created_at":"2026-06-09T02:07:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2603.26719","created_at":"2026-06-09T02:07:25Z"},{"alias_kind":"pith_short_12","alias_value":"ZKKADUEUU564","created_at":"2026-06-09T02:07:25Z"},{"alias_kind":"pith_short_16","alias_value":"ZKKADUEUU564VJW3","created_at":"2026-06-09T02:07:25Z"},{"alias_kind":"pith_short_8","alias_value":"ZKKADUEU","created_at":"2026-06-09T02:07:25Z"}],"graph_snapshots":[{"event_id":"sha256:ba0aae7d66eca2182d6a85f14b81491f85e6c1b991c990db691807233b31471c","target":"graph","created_at":"2026-06-09T02:07:25Z","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/2603.26719/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Nordic countries have adopted ambitious climate targets that imply far-reaching transformations of their power sectors, making energy system modelling a central input to long-term policy analysis. At the same time, comparing results across studies remains challenging due to differences in model structure, assumptions, and data. This paper presents a comparative assessment of Nordic power sector transition pathways across four Nordic countries, based on eight structurally diverse energy system models analysed without harmonising inputs in order to reflect prevailing modelling practice. The ","authors_text":"Christian Breyer, Dmitrii Bogdanov, Eirik Ogner J{\\aa}stad, Emir Fejzi\\'c, Guillermo Valenzuela-Venegas, Ida Gr{\\ae}sted Jensen, Jean-Nicolas Louis, Marianne Zeyringer, Marie M\\\"unster, Maximilian Roithner, Miguel Chang, Oskar V{\\aa}ger\\\"o, Pernille Seljom, Rasmus Bramstoft, Will Usher","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2026-03-18T16:38:24Z","title":"Diverse efforts in the same direction: A multi-model comparison of climate-neutrality power sector pathways for the Nordic countries"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2603.26719","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:eebe82ac5dab4a652c36d9df06e41786896b773e968dddda30d10cc2ef067575","target":"record","created_at":"2026-06-09T02:07:25Z","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":"28c8427b7fb88e8e1cd8cf3d3a3773e9a0a63cffa4e77809e2145eb2c25a1acf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2026-03-18T16:38:24Z","title_canon_sha256":"9fc7aa4b3ee6d00470d66f5d8b1a790a3f474c6f65783c6709b2cbed8050e509"},"schema_version":"1.0","source":{"id":"2603.26719","kind":"arxiv","version":2}},"canonical_sha256":"ca9401d094a77dcaa6db27d77186b220703629d213e9bee05c39e7fd41ac603c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ca9401d094a77dcaa6db27d77186b220703629d213e9bee05c39e7fd41ac603c","first_computed_at":"2026-06-09T02:07:25.404252Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-09T02:07:25.404252Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K7jkD2TyuCxJqcbl63q8S8fSE4d7tQ3Nz8rEPejHE2zdhLQ56w5QWUEny14CVuejYlC+evEISrsc/MYM0QJcAg==","signature_status":"signed_v1","signed_at":"2026-06-09T02:07:25.405353Z","signed_message":"canonical_sha256_bytes"},"source_id":"2603.26719","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eebe82ac5dab4a652c36d9df06e41786896b773e968dddda30d10cc2ef067575","sha256:ba0aae7d66eca2182d6a85f14b81491f85e6c1b991c990db691807233b31471c"],"state_sha256":"32158ed777d6b6e291fcf4cfce917751de64d8bb3eba5e522f8ef49f3e76c40d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/vQf32ziLbWJJS5yYH/YnQKTvtBdZ4tGTvIetIzEe8DLeh91i3aMXbxoqQ+zph6rdGhnGLnex5CDi7Fq5m3QBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T00:21:01.261800Z","bundle_sha256":"922a6228d014f931b85e5379f5508aad5f709ccefe2d2e725cb1f5b0d9bf7ccf"}}