{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:XIZJY3JUE6BOPHKWSJBDGGS7A6","short_pith_number":"pith:XIZJY3JU","canonical_record":{"source":{"id":"1707.08164","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2017-07-20T08:39:29Z","cross_cats_sorted":["cs.GL"],"title_canon_sha256":"0608b01b45543114c050a310a3ddc0d24a5db29fa298768d2f739c5b5c56c631","abstract_canon_sha256":"23788a7814f51f408b85af82cc2302e6e405df63119a0391c4cee8376bade119"},"schema_version":"1.0"},"canonical_sha256":"ba329c6d342782e79d569242331a5f0782c9bf2d78903308f5ace182027eba19","source":{"kind":"arxiv","id":"1707.08164","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.08164","created_at":"2026-05-18T00:25:56Z"},{"alias_kind":"arxiv_version","alias_value":"1707.08164v2","created_at":"2026-05-18T00:25:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.08164","created_at":"2026-05-18T00:25:56Z"},{"alias_kind":"pith_short_12","alias_value":"XIZJY3JUE6BO","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"XIZJY3JUE6BOPHKW","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"XIZJY3JU","created_at":"2026-05-18T12:31:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:XIZJY3JUE6BOPHKWSJBDGGS7A6","target":"record","payload":{"canonical_record":{"source":{"id":"1707.08164","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2017-07-20T08:39:29Z","cross_cats_sorted":["cs.GL"],"title_canon_sha256":"0608b01b45543114c050a310a3ddc0d24a5db29fa298768d2f739c5b5c56c631","abstract_canon_sha256":"23788a7814f51f408b85af82cc2302e6e405df63119a0391c4cee8376bade119"},"schema_version":"1.0"},"canonical_sha256":"ba329c6d342782e79d569242331a5f0782c9bf2d78903308f5ace182027eba19","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:25:56.318108Z","signature_b64":"AT7EkIhcP2s5r85vaR6BM9X7TNM0A7wTR1TMTl/p/8YXh08nSDlRutkVPG+yjXPPNU0RleKysoHEjlebqi8ECA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ba329c6d342782e79d569242331a5f0782c9bf2d78903308f5ace182027eba19","last_reissued_at":"2026-05-18T00:25:56.317458Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:25:56.317458Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.08164","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":"2026-05-18T00:25:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"96z3dOZZ3dk46NljFJ6K0WHNV58zf0CBmYMplQaVKPdMidqmno51G3RI/q9kBjExe2YC6gL0aKybyQJWbctgDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T04:12:07.409344Z"},"content_sha256":"a80a91218cb665707e371b4cf90111382a1e98ddf0d52f44549a5bbc519246b9","schema_version":"1.0","event_id":"sha256:a80a91218cb665707e371b4cf90111382a1e98ddf0d52f44549a5bbc519246b9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:XIZJY3JUE6BOPHKWSJBDGGS7A6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Opening the black box of energy modelling: Strategies and lessons learned","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.GL"],"primary_cat":"cs.CY","authors_text":"Abhishek Shivakumar, Arjuna Nebel, Berit M\\\"uller, Birgit Fais, Carsten Matke, Chris Davis, Clara Heuberger, Clemens Wingenbach, Eva Schmid, Frauke Wiese, Guido Ple{\\ss}mann, Heidi Heinrichs, Iain Staffell, Ingmar Schlecht, J\\\"orn C. Richstein, Lion Hirth, Matthew Gidden, Matthias Reeg, Robbie Morrison, Simon Hilpert, Stefan Pfenninger, Tim Tr\\\"ondle, Tom Brown, Uwe Krien","submitted_at":"2017-07-20T08:39:29Z","abstract_excerpt":"The global energy system is undergoing a major transition, and in energy planning and decision-making across governments, industry and academia, models play a crucial role. Because of their policy relevance and contested nature, the transparency and open availability of energy models and data are of particular importance. Here we provide a practical how-to guide based on the collective experience of members of the Open Energy Modelling Initiative (Openmod). We discuss key steps to consider when opening code and data, including determining intellectual property ownership, choosing a licence and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.08164","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":"2026-05-18T00:25:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iiDZI2o7796LN6wOxNXV1zWQUX7xcBB+kGrSXJvdJUUxcoBWkUTGPyO5nUSAc1nk2yfqbI2Qkxi2C2urJYrYCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T04:12:07.409955Z"},"content_sha256":"1844f8b8cfaa9dc8d081e07cbe9bbd96729051e7d8b3e0610da7f3d9c8981832","schema_version":"1.0","event_id":"sha256:1844f8b8cfaa9dc8d081e07cbe9bbd96729051e7d8b3e0610da7f3d9c8981832"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XIZJY3JUE6BOPHKWSJBDGGS7A6/bundle.json","state_url":"https://pith.science/pith/XIZJY3JUE6BOPHKWSJBDGGS7A6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XIZJY3JUE6BOPHKWSJBDGGS7A6/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":"2026-05-28T04:12:07Z","links":{"resolver":"https://pith.science/pith/XIZJY3JUE6BOPHKWSJBDGGS7A6","bundle":"https://pith.science/pith/XIZJY3JUE6BOPHKWSJBDGGS7A6/bundle.json","state":"https://pith.science/pith/XIZJY3JUE6BOPHKWSJBDGGS7A6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XIZJY3JUE6BOPHKWSJBDGGS7A6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:XIZJY3JUE6BOPHKWSJBDGGS7A6","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":"23788a7814f51f408b85af82cc2302e6e405df63119a0391c4cee8376bade119","cross_cats_sorted":["cs.GL"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2017-07-20T08:39:29Z","title_canon_sha256":"0608b01b45543114c050a310a3ddc0d24a5db29fa298768d2f739c5b5c56c631"},"schema_version":"1.0","source":{"id":"1707.08164","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.08164","created_at":"2026-05-18T00:25:56Z"},{"alias_kind":"arxiv_version","alias_value":"1707.08164v2","created_at":"2026-05-18T00:25:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.08164","created_at":"2026-05-18T00:25:56Z"},{"alias_kind":"pith_short_12","alias_value":"XIZJY3JUE6BO","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"XIZJY3JUE6BOPHKW","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"XIZJY3JU","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:1844f8b8cfaa9dc8d081e07cbe9bbd96729051e7d8b3e0610da7f3d9c8981832","target":"graph","created_at":"2026-05-18T00:25:56Z","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 global energy system is undergoing a major transition, and in energy planning and decision-making across governments, industry and academia, models play a crucial role. Because of their policy relevance and contested nature, the transparency and open availability of energy models and data are of particular importance. Here we provide a practical how-to guide based on the collective experience of members of the Open Energy Modelling Initiative (Openmod). We discuss key steps to consider when opening code and data, including determining intellectual property ownership, choosing a licence and","authors_text":"Abhishek Shivakumar, Arjuna Nebel, Berit M\\\"uller, Birgit Fais, Carsten Matke, Chris Davis, Clara Heuberger, Clemens Wingenbach, Eva Schmid, Frauke Wiese, Guido Ple{\\ss}mann, Heidi Heinrichs, Iain Staffell, Ingmar Schlecht, J\\\"orn C. Richstein, Lion Hirth, Matthew Gidden, Matthias Reeg, Robbie Morrison, Simon Hilpert, Stefan Pfenninger, Tim Tr\\\"ondle, Tom Brown, Uwe Krien","cross_cats":["cs.GL"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2017-07-20T08:39:29Z","title":"Opening the black box of energy modelling: Strategies and lessons learned"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.08164","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:a80a91218cb665707e371b4cf90111382a1e98ddf0d52f44549a5bbc519246b9","target":"record","created_at":"2026-05-18T00:25:56Z","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":"23788a7814f51f408b85af82cc2302e6e405df63119a0391c4cee8376bade119","cross_cats_sorted":["cs.GL"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2017-07-20T08:39:29Z","title_canon_sha256":"0608b01b45543114c050a310a3ddc0d24a5db29fa298768d2f739c5b5c56c631"},"schema_version":"1.0","source":{"id":"1707.08164","kind":"arxiv","version":2}},"canonical_sha256":"ba329c6d342782e79d569242331a5f0782c9bf2d78903308f5ace182027eba19","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ba329c6d342782e79d569242331a5f0782c9bf2d78903308f5ace182027eba19","first_computed_at":"2026-05-18T00:25:56.317458Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:25:56.317458Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AT7EkIhcP2s5r85vaR6BM9X7TNM0A7wTR1TMTl/p/8YXh08nSDlRutkVPG+yjXPPNU0RleKysoHEjlebqi8ECA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:25:56.318108Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.08164","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a80a91218cb665707e371b4cf90111382a1e98ddf0d52f44549a5bbc519246b9","sha256:1844f8b8cfaa9dc8d081e07cbe9bbd96729051e7d8b3e0610da7f3d9c8981832"],"state_sha256":"0558fdb08b08d4b5dd8d6d76a9f9ca14940235a90f2154416d83a24fd73a5132"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9AUzEjauck8n8ss0dU8PAret3vkaEuq1PuB80CTbCP/9yAehWMwgrDwr4bDYUuz9Ccc8P+ZUPl7It/3gd47pBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T04:12:07.412920Z","bundle_sha256":"38903779b51ec46220b678919ab62738f39dc28817360c85509aab930d33ad86"}}