{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:QI672B3A2KAYWFQNI6OPM5SPN5","short_pith_number":"pith:QI672B3A","canonical_record":{"source":{"id":"1507.01751","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-07-07T10:58:33Z","cross_cats_sorted":[],"title_canon_sha256":"290c0b2578d53665f8e64f2c995e384f92c60911fb006d904f7141f9fe8fcce2","abstract_canon_sha256":"a20a021ca7919bb2734f961592d6429c84ee22009c5ded3c23364b96f5917a94"},"schema_version":"1.0"},"canonical_sha256":"823dfd0760d2818b160d479cf6764f6f4778c270a92b1844eeabfb339609a810","source":{"kind":"arxiv","id":"1507.01751","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.01751","created_at":"2026-05-18T01:16:49Z"},{"alias_kind":"arxiv_version","alias_value":"1507.01751v1","created_at":"2026-05-18T01:16:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.01751","created_at":"2026-05-18T01:16:49Z"},{"alias_kind":"pith_short_12","alias_value":"QI672B3A2KAY","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"QI672B3A2KAYWFQN","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"QI672B3A","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:QI672B3A2KAYWFQNI6OPM5SPN5","target":"record","payload":{"canonical_record":{"source":{"id":"1507.01751","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-07-07T10:58:33Z","cross_cats_sorted":[],"title_canon_sha256":"290c0b2578d53665f8e64f2c995e384f92c60911fb006d904f7141f9fe8fcce2","abstract_canon_sha256":"a20a021ca7919bb2734f961592d6429c84ee22009c5ded3c23364b96f5917a94"},"schema_version":"1.0"},"canonical_sha256":"823dfd0760d2818b160d479cf6764f6f4778c270a92b1844eeabfb339609a810","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:49.957213Z","signature_b64":"JPg437O2LlMoJZ3l71StoTokBgHiI3U43kvv7D4rmwoZXPTcdGnGWqKEtv45BK8sxks0injPOcBP1CIHqWHdCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"823dfd0760d2818b160d479cf6764f6f4778c270a92b1844eeabfb339609a810","last_reissued_at":"2026-05-18T01:16:49.956498Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:49.956498Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.01751","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":"2026-05-18T01:16:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aN+Lq5ChggCTPc9IB+GjfVYfOlib6L2/IlpPzNPGBNKLf5hPCVpHrRQxY/RKU+nSKZMEN60x2jOLFxfq3bH5Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:14:06.303274Z"},"content_sha256":"e833aa8a402ee4cd86c6c58e71fed3b013e2706c28ee5ede8e80ec75abe9ebdd","schema_version":"1.0","event_id":"sha256:e833aa8a402ee4cd86c6c58e71fed3b013e2706c28ee5ede8e80ec75abe9ebdd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:QI672B3A2KAYWFQNI6OPM5SPN5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ab initio calculation of the shock Hugoniot of bulk silicon","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Emilio Artacho, Oliver Strickson","submitted_at":"2015-07-07T10:58:33Z","abstract_excerpt":"We describe a simple annealing procedure to obtain the Hugoniot locus (states accessible by a shock wave) for a given material in a computationally efficient manner. We apply this method to determine the Hugoniot locus in bulk silicon from ab initio molecular dynamics with forces from density-functional theory, up to 70 GPa. The fact that shock waves can split into multiple waves due to phase transitions or yielding is taken into account here by specifying the strength of any preceding waves explicitly based on their yield strain. Points corresponding to uniaxial elastic compression along thre"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.01751","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":"2026-05-18T01:16:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P/BCkUkWueGUr4KOIHBSMDKv1bWVODBodiRZymhejbJFCX9qZkthzesvUckU/R6M4ruk4RyK8ARkuaI2CY5ZCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:14:06.303969Z"},"content_sha256":"31cf5124d9a5d4dc749632d2a1a00c5d508d4d6f81f82b60b900ccb222c6a4e0","schema_version":"1.0","event_id":"sha256:31cf5124d9a5d4dc749632d2a1a00c5d508d4d6f81f82b60b900ccb222c6a4e0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QI672B3A2KAYWFQNI6OPM5SPN5/bundle.json","state_url":"https://pith.science/pith/QI672B3A2KAYWFQNI6OPM5SPN5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QI672B3A2KAYWFQNI6OPM5SPN5/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":"2026-05-28T20:14:06Z","links":{"resolver":"https://pith.science/pith/QI672B3A2KAYWFQNI6OPM5SPN5","bundle":"https://pith.science/pith/QI672B3A2KAYWFQNI6OPM5SPN5/bundle.json","state":"https://pith.science/pith/QI672B3A2KAYWFQNI6OPM5SPN5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QI672B3A2KAYWFQNI6OPM5SPN5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:QI672B3A2KAYWFQNI6OPM5SPN5","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":"a20a021ca7919bb2734f961592d6429c84ee22009c5ded3c23364b96f5917a94","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-07-07T10:58:33Z","title_canon_sha256":"290c0b2578d53665f8e64f2c995e384f92c60911fb006d904f7141f9fe8fcce2"},"schema_version":"1.0","source":{"id":"1507.01751","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.01751","created_at":"2026-05-18T01:16:49Z"},{"alias_kind":"arxiv_version","alias_value":"1507.01751v1","created_at":"2026-05-18T01:16:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.01751","created_at":"2026-05-18T01:16:49Z"},{"alias_kind":"pith_short_12","alias_value":"QI672B3A2KAY","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"QI672B3A2KAYWFQN","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"QI672B3A","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:31cf5124d9a5d4dc749632d2a1a00c5d508d4d6f81f82b60b900ccb222c6a4e0","target":"graph","created_at":"2026-05-18T01:16:49Z","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 describe a simple annealing procedure to obtain the Hugoniot locus (states accessible by a shock wave) for a given material in a computationally efficient manner. We apply this method to determine the Hugoniot locus in bulk silicon from ab initio molecular dynamics with forces from density-functional theory, up to 70 GPa. The fact that shock waves can split into multiple waves due to phase transitions or yielding is taken into account here by specifying the strength of any preceding waves explicitly based on their yield strain. Points corresponding to uniaxial elastic compression along thre","authors_text":"Emilio Artacho, Oliver Strickson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-07-07T10:58:33Z","title":"Ab initio calculation of the shock Hugoniot of bulk silicon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.01751","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:e833aa8a402ee4cd86c6c58e71fed3b013e2706c28ee5ede8e80ec75abe9ebdd","target":"record","created_at":"2026-05-18T01:16:49Z","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":"a20a021ca7919bb2734f961592d6429c84ee22009c5ded3c23364b96f5917a94","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-07-07T10:58:33Z","title_canon_sha256":"290c0b2578d53665f8e64f2c995e384f92c60911fb006d904f7141f9fe8fcce2"},"schema_version":"1.0","source":{"id":"1507.01751","kind":"arxiv","version":1}},"canonical_sha256":"823dfd0760d2818b160d479cf6764f6f4778c270a92b1844eeabfb339609a810","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"823dfd0760d2818b160d479cf6764f6f4778c270a92b1844eeabfb339609a810","first_computed_at":"2026-05-18T01:16:49.956498Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:49.956498Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JPg437O2LlMoJZ3l71StoTokBgHiI3U43kvv7D4rmwoZXPTcdGnGWqKEtv45BK8sxks0injPOcBP1CIHqWHdCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:49.957213Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.01751","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e833aa8a402ee4cd86c6c58e71fed3b013e2706c28ee5ede8e80ec75abe9ebdd","sha256:31cf5124d9a5d4dc749632d2a1a00c5d508d4d6f81f82b60b900ccb222c6a4e0"],"state_sha256":"89ae939add9eb769de673ecdedcbc0cba37ac621ab060dfcaa416683996e46dc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yi4Yn+tE2dyz6z4geKmkC9P5yv1nRsfN/J2u79U5EZUeq7WlQFhGoXvVJSI/4NBvCz6z1AdIQA6bfNYZwN5nBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T20:14:06.307754Z","bundle_sha256":"9e4f63bbe8a11baaac1086e4721f98da83a0a95f82d5a7762ccbf523c73f3fc4"}}