{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:ATDKSJ4JWIJBUW4GYJY775MQ74","short_pith_number":"pith:ATDKSJ4J","canonical_record":{"source":{"id":"1510.07621","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-26T13:47:08Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"d06354622e438352108712b933b104a2848191b200eb8bc36fa6f046877ee729","abstract_canon_sha256":"f290a284f410321b38e6ba9bd08d50b57da971e81753269cde4c80904ef9fe9f"},"schema_version":"1.0"},"canonical_sha256":"04c6a92789b2121a5b86c271fff590ff364b788c5fa3d5c6bf06f611afe05169","source":{"kind":"arxiv","id":"1510.07621","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07621","created_at":"2026-05-18T01:29:12Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07621v1","created_at":"2026-05-18T01:29:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07621","created_at":"2026-05-18T01:29:12Z"},{"alias_kind":"pith_short_12","alias_value":"ATDKSJ4JWIJB","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"ATDKSJ4JWIJBUW4G","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"ATDKSJ4J","created_at":"2026-05-18T12:29:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:ATDKSJ4JWIJBUW4GYJY775MQ74","target":"record","payload":{"canonical_record":{"source":{"id":"1510.07621","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-26T13:47:08Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"d06354622e438352108712b933b104a2848191b200eb8bc36fa6f046877ee729","abstract_canon_sha256":"f290a284f410321b38e6ba9bd08d50b57da971e81753269cde4c80904ef9fe9f"},"schema_version":"1.0"},"canonical_sha256":"04c6a92789b2121a5b86c271fff590ff364b788c5fa3d5c6bf06f611afe05169","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:29:12.998045Z","signature_b64":"L1UAkZJB00js5hN/NCiHdUbmOMZPlNv0ASVUt7ZbHYIQaS/oPkJv02y3rOzJFzSJxL1o3NO2WtJmmFkwY/+hAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"04c6a92789b2121a5b86c271fff590ff364b788c5fa3d5c6bf06f611afe05169","last_reissued_at":"2026-05-18T01:29:12.997465Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:29:12.997465Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.07621","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:29:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WIHWdxQhkQsRvT7dmsGljM9Kz44QxJcjYbyItYurzrQY20ZZ2gBB1BveNA4yI3g/i+htKvHpB/TlByNwZabNBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T23:23:20.395935Z"},"content_sha256":"c9e55695b29b321c520adb0b588f8de0d0b788443134ed152b355ecb7c2318a8","schema_version":"1.0","event_id":"sha256:c9e55695b29b321c520adb0b588f8de0d0b788443134ed152b355ecb7c2318a8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:ATDKSJ4JWIJBUW4GYJY775MQ74","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CONCEPT - The COsmological $N$-body CodE in PyThon","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"Jeppe Dakin","submitted_at":"2015-10-26T13:47:08Z","abstract_excerpt":"CO$N$CEPT (COsmological $N$-body CodE in PyThon) is a free and open-source code for cosmological $N$-body simulations on massively parallel computers with distributed memory. Collisionless dark matter is the only implemented particle species. Gravity can be computed using the PP, PM or the P$^{3}$M algorithm. The goal of CO$N$CEPT is to make it pleasant to work with cosmological $N$-body simulations - for the cosmologist as well as for the source code developer.\n  This is the user guide. The source code and additional documentation can be found at https://github.com/jmd-dk/concept/"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07621","kind":"arxiv","version":1},"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":"2026-05-18T01:29:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TTcGTHrAtEC9MwDQgWvuHTjadsI8WZbqHgBILyh6z9VJXzSWqyGoJCeb1mrdW4+hOnT0750wKQmMG1K+7CsoCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T23:23:20.396301Z"},"content_sha256":"7be6a96c6eaf9e3d32edb2b01207343683aac543cedb2bd8881c24a8f785ee66","schema_version":"1.0","event_id":"sha256:7be6a96c6eaf9e3d32edb2b01207343683aac543cedb2bd8881c24a8f785ee66"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ATDKSJ4JWIJBUW4GYJY775MQ74/bundle.json","state_url":"https://pith.science/pith/ATDKSJ4JWIJBUW4GYJY775MQ74/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ATDKSJ4JWIJBUW4GYJY775MQ74/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":"2026-06-08T23:23:20Z","links":{"resolver":"https://pith.science/pith/ATDKSJ4JWIJBUW4GYJY775MQ74","bundle":"https://pith.science/pith/ATDKSJ4JWIJBUW4GYJY775MQ74/bundle.json","state":"https://pith.science/pith/ATDKSJ4JWIJBUW4GYJY775MQ74/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ATDKSJ4JWIJBUW4GYJY775MQ74/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ATDKSJ4JWIJBUW4GYJY775MQ74","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":"f290a284f410321b38e6ba9bd08d50b57da971e81753269cde4c80904ef9fe9f","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-26T13:47:08Z","title_canon_sha256":"d06354622e438352108712b933b104a2848191b200eb8bc36fa6f046877ee729"},"schema_version":"1.0","source":{"id":"1510.07621","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07621","created_at":"2026-05-18T01:29:12Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07621v1","created_at":"2026-05-18T01:29:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07621","created_at":"2026-05-18T01:29:12Z"},{"alias_kind":"pith_short_12","alias_value":"ATDKSJ4JWIJB","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"ATDKSJ4JWIJBUW4G","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"ATDKSJ4J","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:7be6a96c6eaf9e3d32edb2b01207343683aac543cedb2bd8881c24a8f785ee66","target":"graph","created_at":"2026-05-18T01:29:12Z","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":"CO$N$CEPT (COsmological $N$-body CodE in PyThon) is a free and open-source code for cosmological $N$-body simulations on massively parallel computers with distributed memory. Collisionless dark matter is the only implemented particle species. Gravity can be computed using the PP, PM or the P$^{3}$M algorithm. The goal of CO$N$CEPT is to make it pleasant to work with cosmological $N$-body simulations - for the cosmologist as well as for the source code developer.\n  This is the user guide. The source code and additional documentation can be found at https://github.com/jmd-dk/concept/","authors_text":"Jeppe Dakin","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-26T13:47:08Z","title":"CONCEPT - The COsmological $N$-body CodE in PyThon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07621","kind":"arxiv","version":1},"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:c9e55695b29b321c520adb0b588f8de0d0b788443134ed152b355ecb7c2318a8","target":"record","created_at":"2026-05-18T01:29:12Z","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":"f290a284f410321b38e6ba9bd08d50b57da971e81753269cde4c80904ef9fe9f","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-26T13:47:08Z","title_canon_sha256":"d06354622e438352108712b933b104a2848191b200eb8bc36fa6f046877ee729"},"schema_version":"1.0","source":{"id":"1510.07621","kind":"arxiv","version":1}},"canonical_sha256":"04c6a92789b2121a5b86c271fff590ff364b788c5fa3d5c6bf06f611afe05169","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"04c6a92789b2121a5b86c271fff590ff364b788c5fa3d5c6bf06f611afe05169","first_computed_at":"2026-05-18T01:29:12.997465Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:29:12.997465Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L1UAkZJB00js5hN/NCiHdUbmOMZPlNv0ASVUt7ZbHYIQaS/oPkJv02y3rOzJFzSJxL1o3NO2WtJmmFkwY/+hAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:29:12.998045Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.07621","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c9e55695b29b321c520adb0b588f8de0d0b788443134ed152b355ecb7c2318a8","sha256:7be6a96c6eaf9e3d32edb2b01207343683aac543cedb2bd8881c24a8f785ee66"],"state_sha256":"000f6749777e9a99246778377a3354ed1ba86d899ab34148062efaf6a919e919"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RhEb7A1V0JHBKPzf6fWwTVCvqnfnP7ma41LgeoZYCgKEof0RkwUSC7AI+5rnf6I2FCOkqRrwGA12auM2OwrzAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T23:23:20.398348Z","bundle_sha256":"50b1fc95727fd53fc228729f95b818106028d56a3fe1e2ab0f38e96d6ee9542e"}}