{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:7RV4MEDEFEKVCAWQU2FFQZFECS","short_pith_number":"pith:7RV4MEDE","canonical_record":{"source":{"id":"1807.04946","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-07-13T07:15:06Z","cross_cats_sorted":[],"title_canon_sha256":"2e77e27f976c96c2416984861bb0e26ee3aa283b5f73d15e3be587b51515a4aa","abstract_canon_sha256":"5f94bc8f4a13a5945ce20d2069fa8fe24e2e9f88074b54253ff6b28d0b00b445"},"schema_version":"1.0"},"canonical_sha256":"fc6bc6106429155102d0a68a5864a4148a2387db7a3b4ab606985e5544aa6b0b","source":{"kind":"arxiv","id":"1807.04946","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.04946","created_at":"2026-05-17T23:53:30Z"},{"alias_kind":"arxiv_version","alias_value":"1807.04946v1","created_at":"2026-05-17T23:53:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.04946","created_at":"2026-05-17T23:53:30Z"},{"alias_kind":"pith_short_12","alias_value":"7RV4MEDEFEKV","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"7RV4MEDEFEKVCAWQ","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"7RV4MEDE","created_at":"2026-05-18T12:32:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:7RV4MEDEFEKVCAWQU2FFQZFECS","target":"record","payload":{"canonical_record":{"source":{"id":"1807.04946","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-07-13T07:15:06Z","cross_cats_sorted":[],"title_canon_sha256":"2e77e27f976c96c2416984861bb0e26ee3aa283b5f73d15e3be587b51515a4aa","abstract_canon_sha256":"5f94bc8f4a13a5945ce20d2069fa8fe24e2e9f88074b54253ff6b28d0b00b445"},"schema_version":"1.0"},"canonical_sha256":"fc6bc6106429155102d0a68a5864a4148a2387db7a3b4ab606985e5544aa6b0b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:53:30.272172Z","signature_b64":"RP7T1DvnozkHwapYCUvAuzXL5E1TiTZt4ky0gJ6IIFTI8tiD9T9jIwmqes4QsFce6muUqlY1IFr8yzV/4DbwDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fc6bc6106429155102d0a68a5864a4148a2387db7a3b4ab606985e5544aa6b0b","last_reissued_at":"2026-05-17T23:53:30.271534Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:53:30.271534Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.04946","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":"2026-05-17T23:53:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G5hqqyA30TOF98GkFTzLsXZy6mcYAVJDGfnLjnPYvc33lkEUe7JmXWkUNpQDH2tcTyP9bkHeBFM4X6Ce6oXMBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T16:35:13.803971Z"},"content_sha256":"b4da5ddc6f2b4a4e43b33a5a4134ffcf2895b2280e04c1f9e0a2cd494ff5932e","schema_version":"1.0","event_id":"sha256:b4da5ddc6f2b4a4e43b33a5a4134ffcf2895b2280e04c1f9e0a2cd494ff5932e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:7RV4MEDEFEKVCAWQU2FFQZFECS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Relativistic hydrodynamics with spin","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"A. Jaiswal, B. Friman, E. Speranza, R. Ryblewski, W. Florkowski","submitted_at":"2018-07-13T07:15:06Z","abstract_excerpt":"A newly proposed framework of perfect-fluid relativistic hydrodynamics for particles with spin 1/2 is briefly reviewed. The hydrodynamic equations follow entirely from the conservation laws for energy, momentum, and angular momentum. The incorporation of the angular-momentum conservation requires that the spin polarization tensor is introduced. It plays a role of a Lagrange multiplier conjugated to the spin tensor. The space-time evolution of the spin polarization tensor depends on the specific form chosen for the spin tensor."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.04946","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":"2026-05-17T23:53:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4AKNEgtPCiPSZVhhDAf+XKnz+1sfhw23n5J6N84hBS0jz9IorPDWaZnXtT1rXGZ2O42WZTtUct+VA2a4M0BsDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T16:35:13.804348Z"},"content_sha256":"13edb01e37a9699b67a10cd1c57ed4d367413e5f1f4d58603dd36e5bd83b5923","schema_version":"1.0","event_id":"sha256:13edb01e37a9699b67a10cd1c57ed4d367413e5f1f4d58603dd36e5bd83b5923"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7RV4MEDEFEKVCAWQU2FFQZFECS/bundle.json","state_url":"https://pith.science/pith/7RV4MEDEFEKVCAWQU2FFQZFECS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7RV4MEDEFEKVCAWQU2FFQZFECS/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":"2026-06-06T16:35:13Z","links":{"resolver":"https://pith.science/pith/7RV4MEDEFEKVCAWQU2FFQZFECS","bundle":"https://pith.science/pith/7RV4MEDEFEKVCAWQU2FFQZFECS/bundle.json","state":"https://pith.science/pith/7RV4MEDEFEKVCAWQU2FFQZFECS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7RV4MEDEFEKVCAWQU2FFQZFECS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:7RV4MEDEFEKVCAWQU2FFQZFECS","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":"5f94bc8f4a13a5945ce20d2069fa8fe24e2e9f88074b54253ff6b28d0b00b445","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-07-13T07:15:06Z","title_canon_sha256":"2e77e27f976c96c2416984861bb0e26ee3aa283b5f73d15e3be587b51515a4aa"},"schema_version":"1.0","source":{"id":"1807.04946","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.04946","created_at":"2026-05-17T23:53:30Z"},{"alias_kind":"arxiv_version","alias_value":"1807.04946v1","created_at":"2026-05-17T23:53:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.04946","created_at":"2026-05-17T23:53:30Z"},{"alias_kind":"pith_short_12","alias_value":"7RV4MEDEFEKV","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"7RV4MEDEFEKVCAWQ","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"7RV4MEDE","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:13edb01e37a9699b67a10cd1c57ed4d367413e5f1f4d58603dd36e5bd83b5923","target":"graph","created_at":"2026-05-17T23:53:30Z","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":"A newly proposed framework of perfect-fluid relativistic hydrodynamics for particles with spin 1/2 is briefly reviewed. The hydrodynamic equations follow entirely from the conservation laws for energy, momentum, and angular momentum. The incorporation of the angular-momentum conservation requires that the spin polarization tensor is introduced. It plays a role of a Lagrange multiplier conjugated to the spin tensor. The space-time evolution of the spin polarization tensor depends on the specific form chosen for the spin tensor.","authors_text":"A. Jaiswal, B. Friman, E. Speranza, R. Ryblewski, W. Florkowski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-07-13T07:15:06Z","title":"Relativistic hydrodynamics with spin"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.04946","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:b4da5ddc6f2b4a4e43b33a5a4134ffcf2895b2280e04c1f9e0a2cd494ff5932e","target":"record","created_at":"2026-05-17T23:53:30Z","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":"5f94bc8f4a13a5945ce20d2069fa8fe24e2e9f88074b54253ff6b28d0b00b445","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-07-13T07:15:06Z","title_canon_sha256":"2e77e27f976c96c2416984861bb0e26ee3aa283b5f73d15e3be587b51515a4aa"},"schema_version":"1.0","source":{"id":"1807.04946","kind":"arxiv","version":1}},"canonical_sha256":"fc6bc6106429155102d0a68a5864a4148a2387db7a3b4ab606985e5544aa6b0b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc6bc6106429155102d0a68a5864a4148a2387db7a3b4ab606985e5544aa6b0b","first_computed_at":"2026-05-17T23:53:30.271534Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:53:30.271534Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RP7T1DvnozkHwapYCUvAuzXL5E1TiTZt4ky0gJ6IIFTI8tiD9T9jIwmqes4QsFce6muUqlY1IFr8yzV/4DbwDg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:53:30.272172Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.04946","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b4da5ddc6f2b4a4e43b33a5a4134ffcf2895b2280e04c1f9e0a2cd494ff5932e","sha256:13edb01e37a9699b67a10cd1c57ed4d367413e5f1f4d58603dd36e5bd83b5923"],"state_sha256":"e5d68c235f925d6a5bc23fdb94ceed274206c63683ad2b647ffa3585df64746e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YyQc2LkYRFaR2/6dKfVRYtyc7vw+i0KDjaY3Gk1fbWCqn9aVexZE/Avh6OAh9Hk1MBmIl/7i7T2K87rr3z+iCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T16:35:13.807490Z","bundle_sha256":"9368d74dffc2180267b2eb091987a75966a7b1d12b78d3f89520b61c632499dc"}}