{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:FS2PKCYVXFVJZEGZC3ATB735KI","short_pith_number":"pith:FS2PKCYV","canonical_record":{"source":{"id":"1003.3896","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-03-19T23:19:01Z","cross_cats_sorted":[],"title_canon_sha256":"2c82ba3706070a9608fc7afdfa9449d0d808d1f919dd6ca8ebac1c5bba8ae3c1","abstract_canon_sha256":"eaa960de09acd0a8a98c619450e546e9956e032d1e55db57c72af082b4ca1090"},"schema_version":"1.0"},"canonical_sha256":"2cb4f50b15b96a9c90d916c130ff7d5209701e86c798c40e94be94fd5c36ebe2","source":{"kind":"arxiv","id":"1003.3896","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.3896","created_at":"2026-05-18T02:08:25Z"},{"alias_kind":"arxiv_version","alias_value":"1003.3896v1","created_at":"2026-05-18T02:08:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.3896","created_at":"2026-05-18T02:08:25Z"},{"alias_kind":"pith_short_12","alias_value":"FS2PKCYVXFVJ","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"FS2PKCYVXFVJZEGZ","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"FS2PKCYV","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:FS2PKCYVXFVJZEGZC3ATB735KI","target":"record","payload":{"canonical_record":{"source":{"id":"1003.3896","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-03-19T23:19:01Z","cross_cats_sorted":[],"title_canon_sha256":"2c82ba3706070a9608fc7afdfa9449d0d808d1f919dd6ca8ebac1c5bba8ae3c1","abstract_canon_sha256":"eaa960de09acd0a8a98c619450e546e9956e032d1e55db57c72af082b4ca1090"},"schema_version":"1.0"},"canonical_sha256":"2cb4f50b15b96a9c90d916c130ff7d5209701e86c798c40e94be94fd5c36ebe2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:08:25.037614Z","signature_b64":"+iIApky7Ac8Nw6K2V+YugtQFdNVewba6sXiWBxGSFVeDafWJod791qkWJxgsOp8UFmSWaHdFc2/uIyUD6OulAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2cb4f50b15b96a9c90d916c130ff7d5209701e86c798c40e94be94fd5c36ebe2","last_reissued_at":"2026-05-18T02:08:25.036717Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:08:25.036717Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1003.3896","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":"2026-05-18T02:08:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gqOw0HqN6Nm11LP8FzolkuNz7gr8G4Qw+6I0ZDweLfQ6RUTFb3lnJBgGTknAFA6yTGbM3T4Q0Dques0M3SoaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T17:39:37.964226Z"},"content_sha256":"c132f3e012df350dc9c311b83ec4bb54fda8faab8a5f4fc281f129691a74d32f","schema_version":"1.0","event_id":"sha256:c132f3e012df350dc9c311b83ec4bb54fda8faab8a5f4fc281f129691a74d32f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:FS2PKCYVXFVJZEGZC3ATB735KI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"NBSymple, a double parallel, symplectic N-body code running on Graphic Processing Units","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Mastrobuono-Battisti, D. Maschietti (Dep. of Physics, Italy), R. Capuzzo-Dolcetta, Sapienza, Univ. of Roma","submitted_at":"2010-03-19T23:19:01Z","abstract_excerpt":"We present and discuss the characteristics and performances, both in term of computational speed and precision, of a numerical code which numerically integrates the equation of motions of N 'particles' interacting via Newtonian gravitation and move in an external galactic smooth field. The force evaluation on every particle is done by mean of direct summation of the contribution of all the other system's particle, avoiding truncation error. The time integration is done with second-order and sixth-order symplectic schemes. The code, NBSymple, has been parallelized twice, by mean of the Computer"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.3896","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":"2026-05-18T02:08:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TcNYLARnO4bCxUHn1/by6+cyWPgvsai/cSTOYFlFol8Pon9V+UrvXU1sCgaQfurrRiH5xccnk1HQlB3SinGgBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T17:39:37.964952Z"},"content_sha256":"1c3aced60a7f42c517a2566f90e40e58ee41ac672adc3893e06e740ea9706a3e","schema_version":"1.0","event_id":"sha256:1c3aced60a7f42c517a2566f90e40e58ee41ac672adc3893e06e740ea9706a3e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FS2PKCYVXFVJZEGZC3ATB735KI/bundle.json","state_url":"https://pith.science/pith/FS2PKCYVXFVJZEGZC3ATB735KI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FS2PKCYVXFVJZEGZC3ATB735KI/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":"2026-05-26T17:39:37Z","links":{"resolver":"https://pith.science/pith/FS2PKCYVXFVJZEGZC3ATB735KI","bundle":"https://pith.science/pith/FS2PKCYVXFVJZEGZC3ATB735KI/bundle.json","state":"https://pith.science/pith/FS2PKCYVXFVJZEGZC3ATB735KI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FS2PKCYVXFVJZEGZC3ATB735KI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:FS2PKCYVXFVJZEGZC3ATB735KI","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":"eaa960de09acd0a8a98c619450e546e9956e032d1e55db57c72af082b4ca1090","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-03-19T23:19:01Z","title_canon_sha256":"2c82ba3706070a9608fc7afdfa9449d0d808d1f919dd6ca8ebac1c5bba8ae3c1"},"schema_version":"1.0","source":{"id":"1003.3896","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.3896","created_at":"2026-05-18T02:08:25Z"},{"alias_kind":"arxiv_version","alias_value":"1003.3896v1","created_at":"2026-05-18T02:08:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.3896","created_at":"2026-05-18T02:08:25Z"},{"alias_kind":"pith_short_12","alias_value":"FS2PKCYVXFVJ","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"FS2PKCYVXFVJZEGZ","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"FS2PKCYV","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:1c3aced60a7f42c517a2566f90e40e58ee41ac672adc3893e06e740ea9706a3e","target":"graph","created_at":"2026-05-18T02:08:25Z","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"},"paper":{"abstract_excerpt":"We present and discuss the characteristics and performances, both in term of computational speed and precision, of a numerical code which numerically integrates the equation of motions of N 'particles' interacting via Newtonian gravitation and move in an external galactic smooth field. The force evaluation on every particle is done by mean of direct summation of the contribution of all the other system's particle, avoiding truncation error. The time integration is done with second-order and sixth-order symplectic schemes. The code, NBSymple, has been parallelized twice, by mean of the Computer","authors_text":"A. Mastrobuono-Battisti, D. Maschietti (Dep. of Physics, Italy), R. Capuzzo-Dolcetta, Sapienza, Univ. of Roma","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-03-19T23:19:01Z","title":"NBSymple, a double parallel, symplectic N-body code running on Graphic Processing Units"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.3896","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:c132f3e012df350dc9c311b83ec4bb54fda8faab8a5f4fc281f129691a74d32f","target":"record","created_at":"2026-05-18T02:08:25Z","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":"eaa960de09acd0a8a98c619450e546e9956e032d1e55db57c72af082b4ca1090","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2010-03-19T23:19:01Z","title_canon_sha256":"2c82ba3706070a9608fc7afdfa9449d0d808d1f919dd6ca8ebac1c5bba8ae3c1"},"schema_version":"1.0","source":{"id":"1003.3896","kind":"arxiv","version":1}},"canonical_sha256":"2cb4f50b15b96a9c90d916c130ff7d5209701e86c798c40e94be94fd5c36ebe2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2cb4f50b15b96a9c90d916c130ff7d5209701e86c798c40e94be94fd5c36ebe2","first_computed_at":"2026-05-18T02:08:25.036717Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:08:25.036717Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+iIApky7Ac8Nw6K2V+YugtQFdNVewba6sXiWBxGSFVeDafWJod791qkWJxgsOp8UFmSWaHdFc2/uIyUD6OulAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:08:25.037614Z","signed_message":"canonical_sha256_bytes"},"source_id":"1003.3896","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c132f3e012df350dc9c311b83ec4bb54fda8faab8a5f4fc281f129691a74d32f","sha256:1c3aced60a7f42c517a2566f90e40e58ee41ac672adc3893e06e740ea9706a3e"],"state_sha256":"f5708cc3f3e0f00f425ade8fc4fdfa58096679b2c372dc4005c568a652761998"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r3Q3zW6HxYwgpVI+1/0yzmylLP9kRqlj+uC9/hU+hn89F1SwdKzbkh/obZqePb3+EtuJng1Pl2h55IhZp/ZCAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T17:39:37.968836Z","bundle_sha256":"34a1f2e758f0946ddc9838cbd8e7b77c2fd2ac279364b29c4803d113f93f1b55"}}