{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:PIAO3JOEJPIES66UHS266EHVEP","short_pith_number":"pith:PIAO3JOE","canonical_record":{"source":{"id":"1305.5557","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-23T20:25:57Z","cross_cats_sorted":[],"title_canon_sha256":"0201433aa09113b6644f23be4e5efc536ddefa9f8a1f0b74ee0839dfd6807f7c","abstract_canon_sha256":"ac55783298cfeb9ffc759e040848aad3627077d94e2c3d2fbf4df6f17f37a873"},"schema_version":"1.0"},"canonical_sha256":"7a00eda5c44bd0497bd43cb5ef10f523d586d54809eeebbe8c38461dfc7993a3","source":{"kind":"arxiv","id":"1305.5557","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.5557","created_at":"2026-05-18T01:49:47Z"},{"alias_kind":"arxiv_version","alias_value":"1305.5557v1","created_at":"2026-05-18T01:49:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.5557","created_at":"2026-05-18T01:49:47Z"},{"alias_kind":"pith_short_12","alias_value":"PIAO3JOEJPIE","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"PIAO3JOEJPIES66U","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"PIAO3JOE","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:PIAO3JOEJPIES66UHS266EHVEP","target":"record","payload":{"canonical_record":{"source":{"id":"1305.5557","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-23T20:25:57Z","cross_cats_sorted":[],"title_canon_sha256":"0201433aa09113b6644f23be4e5efc536ddefa9f8a1f0b74ee0839dfd6807f7c","abstract_canon_sha256":"ac55783298cfeb9ffc759e040848aad3627077d94e2c3d2fbf4df6f17f37a873"},"schema_version":"1.0"},"canonical_sha256":"7a00eda5c44bd0497bd43cb5ef10f523d586d54809eeebbe8c38461dfc7993a3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:49:47.088427Z","signature_b64":"qrAo2sTAfj55BeU+cYdK/KruVNF+/ox9yAZHxfEykBEsiPy0VVJVWvSUZAWunJ44cihqpN+Jn8AOHilp6/FkBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a00eda5c44bd0497bd43cb5ef10f523d586d54809eeebbe8c38461dfc7993a3","last_reissued_at":"2026-05-18T01:49:47.087889Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:49:47.087889Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.5557","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":"2026-05-18T01:49:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JHydzId8XvliZixhExqSnUB6BbJPApU37kC1/n2qWoZ1LJC4vsjDrYW7NDcCke9S6rlR6FxKBfbyTqgA34FDDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:46:03.875416Z"},"content_sha256":"bab011a07b46a75d6c21997b7caf9c5ba81f7fd15cd6ae4d864bc4edbe293b40","schema_version":"1.0","event_id":"sha256:bab011a07b46a75d6c21997b7caf9c5ba81f7fd15cd6ae4d864bc4edbe293b40"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:PIAO3JOEJPIES66UHS266EHVEP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cold versus Warm Dark Matter simulations of a galaxy group","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Alexander Knebe, Arianna Di Cintio, Gustavo Yepes, Luis A. Martinez-Vaquero, Matthias Steinmetz, Noam I. Libeskind, Stefan Gottloeber, Yehuda Hoffman","submitted_at":"2013-05-23T20:25:57Z","abstract_excerpt":"The differences between cold (CDM) and warm (WDM) dark matter in the formation of a group of galaxies is examined by running two identical simulations where in the WDM case the initial power spectrum has been altered to mimic a 1keV dark matter particle. The CDM initial conditions were constrained to reproduce at z = 0 the correct local environment within which a \"Local Group\" (LG) of galaxies may form. Two significant differences between the two simulations are found. While in the CDM case a group of galaxies that resembles the real LG forms, the WDM run fails to reproduce a viable LG, instea"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.5557","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":"2026-05-18T01:49:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vinxjZ+1NDomc/5ZWRiLdpPr/fw8/+0dtE6yQDIGzL/DyCGS49C+oXqranAvWtjAziOIsW9ULiMYD/fpY4APCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:46:03.875891Z"},"content_sha256":"39131fa3d81d179f138e17e27ea63f0724b002f59656f6e68260f09e3fa4f3cd","schema_version":"1.0","event_id":"sha256:39131fa3d81d179f138e17e27ea63f0724b002f59656f6e68260f09e3fa4f3cd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PIAO3JOEJPIES66UHS266EHVEP/bundle.json","state_url":"https://pith.science/pith/PIAO3JOEJPIES66UHS266EHVEP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PIAO3JOEJPIES66UHS266EHVEP/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":"2026-05-25T21:46:03Z","links":{"resolver":"https://pith.science/pith/PIAO3JOEJPIES66UHS266EHVEP","bundle":"https://pith.science/pith/PIAO3JOEJPIES66UHS266EHVEP/bundle.json","state":"https://pith.science/pith/PIAO3JOEJPIES66UHS266EHVEP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PIAO3JOEJPIES66UHS266EHVEP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:PIAO3JOEJPIES66UHS266EHVEP","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":"ac55783298cfeb9ffc759e040848aad3627077d94e2c3d2fbf4df6f17f37a873","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-23T20:25:57Z","title_canon_sha256":"0201433aa09113b6644f23be4e5efc536ddefa9f8a1f0b74ee0839dfd6807f7c"},"schema_version":"1.0","source":{"id":"1305.5557","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.5557","created_at":"2026-05-18T01:49:47Z"},{"alias_kind":"arxiv_version","alias_value":"1305.5557v1","created_at":"2026-05-18T01:49:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.5557","created_at":"2026-05-18T01:49:47Z"},{"alias_kind":"pith_short_12","alias_value":"PIAO3JOEJPIE","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"PIAO3JOEJPIES66U","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"PIAO3JOE","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:39131fa3d81d179f138e17e27ea63f0724b002f59656f6e68260f09e3fa4f3cd","target":"graph","created_at":"2026-05-18T01:49:47Z","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 differences between cold (CDM) and warm (WDM) dark matter in the formation of a group of galaxies is examined by running two identical simulations where in the WDM case the initial power spectrum has been altered to mimic a 1keV dark matter particle. The CDM initial conditions were constrained to reproduce at z = 0 the correct local environment within which a \"Local Group\" (LG) of galaxies may form. Two significant differences between the two simulations are found. While in the CDM case a group of galaxies that resembles the real LG forms, the WDM run fails to reproduce a viable LG, instea","authors_text":"Alexander Knebe, Arianna Di Cintio, Gustavo Yepes, Luis A. Martinez-Vaquero, Matthias Steinmetz, Noam I. Libeskind, Stefan Gottloeber, Yehuda Hoffman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-23T20:25:57Z","title":"Cold versus Warm Dark Matter simulations of a galaxy group"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.5557","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:bab011a07b46a75d6c21997b7caf9c5ba81f7fd15cd6ae4d864bc4edbe293b40","target":"record","created_at":"2026-05-18T01:49:47Z","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":"ac55783298cfeb9ffc759e040848aad3627077d94e2c3d2fbf4df6f17f37a873","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-23T20:25:57Z","title_canon_sha256":"0201433aa09113b6644f23be4e5efc536ddefa9f8a1f0b74ee0839dfd6807f7c"},"schema_version":"1.0","source":{"id":"1305.5557","kind":"arxiv","version":1}},"canonical_sha256":"7a00eda5c44bd0497bd43cb5ef10f523d586d54809eeebbe8c38461dfc7993a3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a00eda5c44bd0497bd43cb5ef10f523d586d54809eeebbe8c38461dfc7993a3","first_computed_at":"2026-05-18T01:49:47.087889Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:49:47.087889Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qrAo2sTAfj55BeU+cYdK/KruVNF+/ox9yAZHxfEykBEsiPy0VVJVWvSUZAWunJ44cihqpN+Jn8AOHilp6/FkBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:49:47.088427Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.5557","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bab011a07b46a75d6c21997b7caf9c5ba81f7fd15cd6ae4d864bc4edbe293b40","sha256:39131fa3d81d179f138e17e27ea63f0724b002f59656f6e68260f09e3fa4f3cd"],"state_sha256":"88db759ea7ac15dbccc5a4a1cc6d2561160a3fbd730effcb2c31c297321107a6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3yxuH56rmbesR28eAKS1V8VXWBvrC32Ju5IVtfXjK9TF4PszKrqBk2RGUPLIc07V8dnlahgIl/NRDQIWBE5dAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:46:03.878618Z","bundle_sha256":"31b7786b98ddae31d1f29a29429435be6a9ed1b02442f7a5f2c8eaf0e5e2bc66"}}