{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:4NLKJ2SXSFQFVBZZIRTDR3GLQY","short_pith_number":"pith:4NLKJ2SX","canonical_record":{"source":{"id":"0810.4599","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-25T13:38:31Z","cross_cats_sorted":[],"title_canon_sha256":"099b53617c86e8c299ff60071a653ab6a115301329b895238f20f0c0342c422d","abstract_canon_sha256":"44b2896fe79360e0cc73d767fcaea24757b342543ee179d078f7f63e0829b42f"},"schema_version":"1.0"},"canonical_sha256":"e356a4ea5791605a8739446638eccb862b6cfd3ccfc76d6523c43e8d55a3bb80","source":{"kind":"arxiv","id":"0810.4599","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.4599","created_at":"2026-05-18T02:15:23Z"},{"alias_kind":"arxiv_version","alias_value":"0810.4599v3","created_at":"2026-05-18T02:15:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.4599","created_at":"2026-05-18T02:15:23Z"},{"alias_kind":"pith_short_12","alias_value":"4NLKJ2SXSFQF","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"4NLKJ2SXSFQFVBZZ","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"4NLKJ2SX","created_at":"2026-05-18T12:25:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:4NLKJ2SXSFQFVBZZIRTDR3GLQY","target":"record","payload":{"canonical_record":{"source":{"id":"0810.4599","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-25T13:38:31Z","cross_cats_sorted":[],"title_canon_sha256":"099b53617c86e8c299ff60071a653ab6a115301329b895238f20f0c0342c422d","abstract_canon_sha256":"44b2896fe79360e0cc73d767fcaea24757b342543ee179d078f7f63e0829b42f"},"schema_version":"1.0"},"canonical_sha256":"e356a4ea5791605a8739446638eccb862b6cfd3ccfc76d6523c43e8d55a3bb80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:15:23.356739Z","signature_b64":"owoyxTaZKHB3HChNpx8AZqqSHAPnsrymbqYx8ds0vgKf0DldIWyoFQfkXZxVc2d7MjQglwSQt2aiL2q/IZnnAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e356a4ea5791605a8739446638eccb862b6cfd3ccfc76d6523c43e8d55a3bb80","last_reissued_at":"2026-05-18T02:15:23.356105Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:15:23.356105Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0810.4599","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:15:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LI5Y2DDuWn0DzzP2a60ckuJCoow/cavGerR6UvXGlORPKBp37G59/mwzMELlRpZcnVsi3RXz+uB/QfJ4YOqJAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T18:17:06.167954Z"},"content_sha256":"c9d3bfe0a57b73bd37f0ed3e29d153642fd4d334ce575acfb88209ba255544c9","schema_version":"1.0","event_id":"sha256:c9d3bfe0a57b73bd37f0ed3e29d153642fd4d334ce575acfb88209ba255544c9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:4NLKJ2SXSFQFVBZZIRTDR3GLQY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Algorithmic comparisons of decaying, isothermal, supersonic turbulence","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.-K. Jappsen, C. Federrath, D. Price, J. Dursi, J. Kim, M. Gritschneder, M.-M. Mac Low, P. Ciecielag, R. Klessen, R. Piontek, S. Kitsionas, S. Walch, W. Schmidt","submitted_at":"2008-10-25T13:38:31Z","abstract_excerpt":"Contradicting results have been reported in the literature with respect to the performance of the numerical techniques employed for the study of supersonic turbulence. We aim at characterising the performance of different particle-based and grid-based techniques on the modelling of decaying supersonic turbulence. Four different grid codes (ENZO, FLASH, TVD, ZEUS) and three different SPH codes (GADGET, PHANTOM, VINE) are compared. We additionally analysed two calculations denoted as PHANTOM A and PHANTOM B using two different implementations of artificial viscosity. Our analysis indicates that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.4599","kind":"arxiv","version":3},"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":"2026-05-18T02:15:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bRy6s+wurFzwOnjKAPtU+6zmJQA5hxwKwbQh8hOCvR7o5h3cCHKh/9r5u0tqvteFLGYVWh9dMd5S71WziZ6CCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T18:17:06.168300Z"},"content_sha256":"31a73b0bd123e4ef4ac528bb5623b9b3c0502c9fbbf37f46cbcb55d48c4fc666","schema_version":"1.0","event_id":"sha256:31a73b0bd123e4ef4ac528bb5623b9b3c0502c9fbbf37f46cbcb55d48c4fc666"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4NLKJ2SXSFQFVBZZIRTDR3GLQY/bundle.json","state_url":"https://pith.science/pith/4NLKJ2SXSFQFVBZZIRTDR3GLQY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4NLKJ2SXSFQFVBZZIRTDR3GLQY/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":"2026-06-03T18:17:06Z","links":{"resolver":"https://pith.science/pith/4NLKJ2SXSFQFVBZZIRTDR3GLQY","bundle":"https://pith.science/pith/4NLKJ2SXSFQFVBZZIRTDR3GLQY/bundle.json","state":"https://pith.science/pith/4NLKJ2SXSFQFVBZZIRTDR3GLQY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4NLKJ2SXSFQFVBZZIRTDR3GLQY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:4NLKJ2SXSFQFVBZZIRTDR3GLQY","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":"44b2896fe79360e0cc73d767fcaea24757b342543ee179d078f7f63e0829b42f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-25T13:38:31Z","title_canon_sha256":"099b53617c86e8c299ff60071a653ab6a115301329b895238f20f0c0342c422d"},"schema_version":"1.0","source":{"id":"0810.4599","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.4599","created_at":"2026-05-18T02:15:23Z"},{"alias_kind":"arxiv_version","alias_value":"0810.4599v3","created_at":"2026-05-18T02:15:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.4599","created_at":"2026-05-18T02:15:23Z"},{"alias_kind":"pith_short_12","alias_value":"4NLKJ2SXSFQF","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"4NLKJ2SXSFQFVBZZ","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"4NLKJ2SX","created_at":"2026-05-18T12:25:56Z"}],"graph_snapshots":[{"event_id":"sha256:31a73b0bd123e4ef4ac528bb5623b9b3c0502c9fbbf37f46cbcb55d48c4fc666","target":"graph","created_at":"2026-05-18T02:15:23Z","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":"Contradicting results have been reported in the literature with respect to the performance of the numerical techniques employed for the study of supersonic turbulence. We aim at characterising the performance of different particle-based and grid-based techniques on the modelling of decaying supersonic turbulence. Four different grid codes (ENZO, FLASH, TVD, ZEUS) and three different SPH codes (GADGET, PHANTOM, VINE) are compared. We additionally analysed two calculations denoted as PHANTOM A and PHANTOM B using two different implementations of artificial viscosity. Our analysis indicates that ","authors_text":"A.-K. Jappsen, C. Federrath, D. Price, J. Dursi, J. Kim, M. Gritschneder, M.-M. Mac Low, P. Ciecielag, R. Klessen, R. Piontek, S. Kitsionas, S. Walch, W. Schmidt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-25T13:38:31Z","title":"Algorithmic comparisons of decaying, isothermal, supersonic turbulence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.4599","kind":"arxiv","version":3},"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:c9d3bfe0a57b73bd37f0ed3e29d153642fd4d334ce575acfb88209ba255544c9","target":"record","created_at":"2026-05-18T02:15:23Z","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":"44b2896fe79360e0cc73d767fcaea24757b342543ee179d078f7f63e0829b42f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-10-25T13:38:31Z","title_canon_sha256":"099b53617c86e8c299ff60071a653ab6a115301329b895238f20f0c0342c422d"},"schema_version":"1.0","source":{"id":"0810.4599","kind":"arxiv","version":3}},"canonical_sha256":"e356a4ea5791605a8739446638eccb862b6cfd3ccfc76d6523c43e8d55a3bb80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e356a4ea5791605a8739446638eccb862b6cfd3ccfc76d6523c43e8d55a3bb80","first_computed_at":"2026-05-18T02:15:23.356105Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:15:23.356105Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"owoyxTaZKHB3HChNpx8AZqqSHAPnsrymbqYx8ds0vgKf0DldIWyoFQfkXZxVc2d7MjQglwSQt2aiL2q/IZnnAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:15:23.356739Z","signed_message":"canonical_sha256_bytes"},"source_id":"0810.4599","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c9d3bfe0a57b73bd37f0ed3e29d153642fd4d334ce575acfb88209ba255544c9","sha256:31a73b0bd123e4ef4ac528bb5623b9b3c0502c9fbbf37f46cbcb55d48c4fc666"],"state_sha256":"1130a0d308f64c31abb51280269064a889fd6586c439a10020dec7fd27bab02b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E6IfDkfse78K57VdrryBgDAHfcD0o5sDKrXVT3I3YBfK9PpgZyFdNl/X1HXr5MpFMeE+FPhpxoG72vLZQNHvBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T18:17:06.170267Z","bundle_sha256":"833ed1a9b6a926f15b181014129d6b34efc758f012a6d075433721db8b51d556"}}