{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:2PZ4MEOVJ6CNLVYKXUINMCZAKL","short_pith_number":"pith:2PZ4MEOV","canonical_record":{"source":{"id":"0707.1475","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2007-07-10T15:42:29Z","cross_cats_sorted":[],"title_canon_sha256":"c2455a83b28d5bfba7c0a03a18843cf73dc8d8e4b157e3117be698b10056db85","abstract_canon_sha256":"2182afd46271ff4e22b378ef0cce9699d2429b65a49a81f50ae0b2b3879f468f"},"schema_version":"1.0"},"canonical_sha256":"d3f3c611d54f84d5d70abd10d60b2052f0950a5a6848e5badbc1a02edb5b6bb3","source":{"kind":"arxiv","id":"0707.1475","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0707.1475","created_at":"2026-07-04T15:24:26Z"},{"alias_kind":"arxiv_version","alias_value":"0707.1475v2","created_at":"2026-07-04T15:24:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0707.1475","created_at":"2026-07-04T15:24:26Z"},{"alias_kind":"pith_short_12","alias_value":"2PZ4MEOVJ6CN","created_at":"2026-07-04T15:24:26Z"},{"alias_kind":"pith_short_16","alias_value":"2PZ4MEOVJ6CNLVYK","created_at":"2026-07-04T15:24:26Z"},{"alias_kind":"pith_short_8","alias_value":"2PZ4MEOV","created_at":"2026-07-04T15:24:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:2PZ4MEOVJ6CNLVYKXUINMCZAKL","target":"record","payload":{"canonical_record":{"source":{"id":"0707.1475","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2007-07-10T15:42:29Z","cross_cats_sorted":[],"title_canon_sha256":"c2455a83b28d5bfba7c0a03a18843cf73dc8d8e4b157e3117be698b10056db85","abstract_canon_sha256":"2182afd46271ff4e22b378ef0cce9699d2429b65a49a81f50ae0b2b3879f468f"},"schema_version":"1.0"},"canonical_sha256":"d3f3c611d54f84d5d70abd10d60b2052f0950a5a6848e5badbc1a02edb5b6bb3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:24:26.318300Z","signature_b64":"0Jzl41hCq1lQny6bqgi7Bl04o1fohBN9p2/nxw0i9jxBHPf/DZmHyFULeFPGc7/9b0m9MhJ26VOAhxr+tGaEBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3f3c611d54f84d5d70abd10d60b2052f0950a5a6848e5badbc1a02edb5b6bb3","last_reissued_at":"2026-07-04T15:24:26.317805Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:24:26.317805Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0707.1475","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:24:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AvKnNxq2RQPaGyPSQ9A1YxqAOFqvPHUfBFE05IweVSZJhLczhtrN/0pBmtRc1O0JTnD907Uwu7DJPJu2YSxuDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T08:31:55.771610Z"},"content_sha256":"5e3062898923e5255f920747b89416c2a8e68cea6ee16b7945e8aa3b66d2e362","schema_version":"1.0","event_id":"sha256:5e3062898923e5255f920747b89416c2a8e68cea6ee16b7945e8aa3b66d2e362"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:2PZ4MEOVJ6CNLVYKXUINMCZAKL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamical laws of superenergy in General Relativity","license":"","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Alfonso Garc\\'ia-Parrado G\\'omez-Lobo","submitted_at":"2007-07-10T15:42:29Z","abstract_excerpt":"The Bel and Bel-Robinson tensors were introduced nearly fifty years ago in an attempt to generalize to gravitation the energy-momentum tensor of electromagnetism. This generalization was successful from the mathematical point of view because these tensors share mathematical properties which are remarkably similar to those of the energy-momentum tensor of electromagnetism. However, the physical role of these tensors in General Relativity has remained obscure and no interpretation has achieved wide acceptance. In principle, they cannot represent {\\em energy} and the term {\\em superenergy} has be"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.1475","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0707.1475/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T15:24:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GzvzGP+zCk0GdoQcG794Z1mBatDL/nL70VsHi/z93O8XExBXYFpcVVZUdfXuzLZ9MurorcqAfY033y6G8tETDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T08:31:55.777623Z"},"content_sha256":"875756ba53cbc66d4d5ce3c75212f240791e3ad3e8b5fc0e6e10e26bbc704968","schema_version":"1.0","event_id":"sha256:875756ba53cbc66d4d5ce3c75212f240791e3ad3e8b5fc0e6e10e26bbc704968"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2PZ4MEOVJ6CNLVYKXUINMCZAKL/bundle.json","state_url":"https://pith.science/pith/2PZ4MEOVJ6CNLVYKXUINMCZAKL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2PZ4MEOVJ6CNLVYKXUINMCZAKL/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":"2026-08-21T08:31:55Z","links":{"resolver":"https://pith.science/pith/2PZ4MEOVJ6CNLVYKXUINMCZAKL","bundle":"https://pith.science/pith/2PZ4MEOVJ6CNLVYKXUINMCZAKL/bundle.json","state":"https://pith.science/pith/2PZ4MEOVJ6CNLVYKXUINMCZAKL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2PZ4MEOVJ6CNLVYKXUINMCZAKL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:2PZ4MEOVJ6CNLVYKXUINMCZAKL","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":"2182afd46271ff4e22b378ef0cce9699d2429b65a49a81f50ae0b2b3879f468f","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"2007-07-10T15:42:29Z","title_canon_sha256":"c2455a83b28d5bfba7c0a03a18843cf73dc8d8e4b157e3117be698b10056db85"},"schema_version":"1.0","source":{"id":"0707.1475","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0707.1475","created_at":"2026-07-04T15:24:26Z"},{"alias_kind":"arxiv_version","alias_value":"0707.1475v2","created_at":"2026-07-04T15:24:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0707.1475","created_at":"2026-07-04T15:24:26Z"},{"alias_kind":"pith_short_12","alias_value":"2PZ4MEOVJ6CN","created_at":"2026-07-04T15:24:26Z"},{"alias_kind":"pith_short_16","alias_value":"2PZ4MEOVJ6CNLVYK","created_at":"2026-07-04T15:24:26Z"},{"alias_kind":"pith_short_8","alias_value":"2PZ4MEOV","created_at":"2026-07-04T15:24:26Z"}],"graph_snapshots":[{"event_id":"sha256:875756ba53cbc66d4d5ce3c75212f240791e3ad3e8b5fc0e6e10e26bbc704968","target":"graph","created_at":"2026-07-04T15:24:26Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0707.1475/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Bel and Bel-Robinson tensors were introduced nearly fifty years ago in an attempt to generalize to gravitation the energy-momentum tensor of electromagnetism. This generalization was successful from the mathematical point of view because these tensors share mathematical properties which are remarkably similar to those of the energy-momentum tensor of electromagnetism. However, the physical role of these tensors in General Relativity has remained obscure and no interpretation has achieved wide acceptance. In principle, they cannot represent {\\em energy} and the term {\\em superenergy} has be","authors_text":"Alfonso Garc\\'ia-Parrado G\\'omez-Lobo","cross_cats":[],"headline":"","license":"","primary_cat":"gr-qc","submitted_at":"2007-07-10T15:42:29Z","title":"Dynamical laws of superenergy in General Relativity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.1475","kind":"arxiv","version":2},"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":"sha256:5e3062898923e5255f920747b89416c2a8e68cea6ee16b7945e8aa3b66d2e362","target":"record","created_at":"2026-07-04T15:24:26Z","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":"2182afd46271ff4e22b378ef0cce9699d2429b65a49a81f50ae0b2b3879f468f","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"2007-07-10T15:42:29Z","title_canon_sha256":"c2455a83b28d5bfba7c0a03a18843cf73dc8d8e4b157e3117be698b10056db85"},"schema_version":"1.0","source":{"id":"0707.1475","kind":"arxiv","version":2}},"canonical_sha256":"d3f3c611d54f84d5d70abd10d60b2052f0950a5a6848e5badbc1a02edb5b6bb3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3f3c611d54f84d5d70abd10d60b2052f0950a5a6848e5badbc1a02edb5b6bb3","first_computed_at":"2026-07-04T15:24:26.317805Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:24:26.317805Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0Jzl41hCq1lQny6bqgi7Bl04o1fohBN9p2/nxw0i9jxBHPf/DZmHyFULeFPGc7/9b0m9MhJ26VOAhxr+tGaEBw==","signature_status":"signed_v1","signed_at":"2026-07-04T15:24:26.318300Z","signed_message":"canonical_sha256_bytes"},"source_id":"0707.1475","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5e3062898923e5255f920747b89416c2a8e68cea6ee16b7945e8aa3b66d2e362","sha256:875756ba53cbc66d4d5ce3c75212f240791e3ad3e8b5fc0e6e10e26bbc704968"],"state_sha256":"7842a5c8367022972372274d7d870b29343c765608bc2deed78278c8d51e1252"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zCVQBpUF01Dpj/zVswD7aJca9L/XdOG77wtrbRK5+DfPk4pPcKyZdcKrDafB+m2wAqCyscdJciLrhUuCVjQbBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T08:31:55.784385Z","bundle_sha256":"ce90c30c6fcacefdb96cfac6d097442fd3f94f9facc59858ea6651849918a12f"}}