{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:MW3NHZ5SIP4O4GRA2JX32IY74A","short_pith_number":"pith:MW3NHZ5S","canonical_record":{"source":{"id":"2308.07360","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-08-14T15:50:20Z","cross_cats_sorted":[],"title_canon_sha256":"1645fd538738231246e31c9aac7316c0217443b31c8dd88066de0ddfc758af08","abstract_canon_sha256":"1b6e3a544e0882a6a09cf6de16a9cf214fa7d9f2218c8a00390ae7ed1d30b03c"},"schema_version":"1.0"},"canonical_sha256":"65b6d3e7b243f8ee1a20d26fbd231fe01efe39844b89e196fac311854244b049","source":{"kind":"arxiv","id":"2308.07360","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.07360","created_at":"2026-07-05T07:09:51Z"},{"alias_kind":"arxiv_version","alias_value":"2308.07360v2","created_at":"2026-07-05T07:09:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.07360","created_at":"2026-07-05T07:09:51Z"},{"alias_kind":"pith_short_12","alias_value":"MW3NHZ5SIP4O","created_at":"2026-07-05T07:09:51Z"},{"alias_kind":"pith_short_16","alias_value":"MW3NHZ5SIP4O4GRA","created_at":"2026-07-05T07:09:51Z"},{"alias_kind":"pith_short_8","alias_value":"MW3NHZ5S","created_at":"2026-07-05T07:09:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:MW3NHZ5SIP4O4GRA2JX32IY74A","target":"record","payload":{"canonical_record":{"source":{"id":"2308.07360","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-08-14T15:50:20Z","cross_cats_sorted":[],"title_canon_sha256":"1645fd538738231246e31c9aac7316c0217443b31c8dd88066de0ddfc758af08","abstract_canon_sha256":"1b6e3a544e0882a6a09cf6de16a9cf214fa7d9f2218c8a00390ae7ed1d30b03c"},"schema_version":"1.0"},"canonical_sha256":"65b6d3e7b243f8ee1a20d26fbd231fe01efe39844b89e196fac311854244b049","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:09:51.324362Z","signature_b64":"fOcYTR0RfaFRddL+P50wpFlSxvVhC2UW59+cZwsn54DOzRWiuY1/awvD/CxXyT8BLYuupeotEwBrhF0jmsEMBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65b6d3e7b243f8ee1a20d26fbd231fe01efe39844b89e196fac311854244b049","last_reissued_at":"2026-07-05T07:09:51.323858Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:09:51.323858Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.07360","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":"2026-07-05T07:09:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GXd7T0wIJjzHM9s3Wsqmi1cXdCP2GRbN5oq9pWxsULtirlnTN7Usl0K9fkjRODs8HobJADWmX7mep2fIwuhWCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T05:09:14.062391Z"},"content_sha256":"da65bfa5a144ddb98773072a9b5e379af3d24aa847bdd56fbc1bf9a59bf326f3","schema_version":"1.0","event_id":"sha256:da65bfa5a144ddb98773072a9b5e379af3d24aa847bdd56fbc1bf9a59bf326f3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:MW3NHZ5SIP4O4GRA2JX32IY74A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A clarification on prevailing misconceptions in unimodular gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Alejandro Perez, Daniel Sudarsky, Gabriel Leon, Gabriel R. Bengochea","submitted_at":"2023-08-14T15:50:20Z","abstract_excerpt":"The traditional presentation of Unimodular Gravity (UG) consists on indicating that it is an alternative theory of gravity that restricts the generic diffeomorphism invariance of General Relativity. In particular, as often encountered in the literature, unlike General Relativity, Unimodular Gravity is invariant solely under volume-preserving diffeomorphisms. That characterization of UG has led to some confusion and incorrect statements in various treatments on the subject. For instance, sometimes it is claimed (mistakenly) that only spacetime metrics such that $|$det $g_{\\mu \\nu}| = 1$ can be "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.07360","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/2308.07360/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":"2026-07-05T07:09:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8IF2qgPROM5p/sKTksfzwnn9hqFpJrP0aCpoMYNuT7/NNNr0B0qHkcsF9P4WQ+hRVkPvIWzt5S8iJCvramrxCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T05:09:14.062887Z"},"content_sha256":"b1e963429c32a6d6ad822e963bb73b7c59b66e33c8c1fd31351f407961e09950","schema_version":"1.0","event_id":"sha256:b1e963429c32a6d6ad822e963bb73b7c59b66e33c8c1fd31351f407961e09950"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MW3NHZ5SIP4O4GRA2JX32IY74A/bundle.json","state_url":"https://pith.science/pith/MW3NHZ5SIP4O4GRA2JX32IY74A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MW3NHZ5SIP4O4GRA2JX32IY74A/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":"2026-08-15T05:09:14Z","links":{"resolver":"https://pith.science/pith/MW3NHZ5SIP4O4GRA2JX32IY74A","bundle":"https://pith.science/pith/MW3NHZ5SIP4O4GRA2JX32IY74A/bundle.json","state":"https://pith.science/pith/MW3NHZ5SIP4O4GRA2JX32IY74A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MW3NHZ5SIP4O4GRA2JX32IY74A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:MW3NHZ5SIP4O4GRA2JX32IY74A","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":"1b6e3a544e0882a6a09cf6de16a9cf214fa7d9f2218c8a00390ae7ed1d30b03c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-08-14T15:50:20Z","title_canon_sha256":"1645fd538738231246e31c9aac7316c0217443b31c8dd88066de0ddfc758af08"},"schema_version":"1.0","source":{"id":"2308.07360","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.07360","created_at":"2026-07-05T07:09:51Z"},{"alias_kind":"arxiv_version","alias_value":"2308.07360v2","created_at":"2026-07-05T07:09:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.07360","created_at":"2026-07-05T07:09:51Z"},{"alias_kind":"pith_short_12","alias_value":"MW3NHZ5SIP4O","created_at":"2026-07-05T07:09:51Z"},{"alias_kind":"pith_short_16","alias_value":"MW3NHZ5SIP4O4GRA","created_at":"2026-07-05T07:09:51Z"},{"alias_kind":"pith_short_8","alias_value":"MW3NHZ5S","created_at":"2026-07-05T07:09:51Z"}],"graph_snapshots":[{"event_id":"sha256:b1e963429c32a6d6ad822e963bb73b7c59b66e33c8c1fd31351f407961e09950","target":"graph","created_at":"2026-07-05T07:09:51Z","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/2308.07360/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The traditional presentation of Unimodular Gravity (UG) consists on indicating that it is an alternative theory of gravity that restricts the generic diffeomorphism invariance of General Relativity. In particular, as often encountered in the literature, unlike General Relativity, Unimodular Gravity is invariant solely under volume-preserving diffeomorphisms. That characterization of UG has led to some confusion and incorrect statements in various treatments on the subject. For instance, sometimes it is claimed (mistakenly) that only spacetime metrics such that $|$det $g_{\\mu \\nu}| = 1$ can be ","authors_text":"Alejandro Perez, Daniel Sudarsky, Gabriel Leon, Gabriel R. Bengochea","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-08-14T15:50:20Z","title":"A clarification on prevailing misconceptions in unimodular gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.07360","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:da65bfa5a144ddb98773072a9b5e379af3d24aa847bdd56fbc1bf9a59bf326f3","target":"record","created_at":"2026-07-05T07:09:51Z","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":"1b6e3a544e0882a6a09cf6de16a9cf214fa7d9f2218c8a00390ae7ed1d30b03c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-08-14T15:50:20Z","title_canon_sha256":"1645fd538738231246e31c9aac7316c0217443b31c8dd88066de0ddfc758af08"},"schema_version":"1.0","source":{"id":"2308.07360","kind":"arxiv","version":2}},"canonical_sha256":"65b6d3e7b243f8ee1a20d26fbd231fe01efe39844b89e196fac311854244b049","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65b6d3e7b243f8ee1a20d26fbd231fe01efe39844b89e196fac311854244b049","first_computed_at":"2026-07-05T07:09:51.323858Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:09:51.323858Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fOcYTR0RfaFRddL+P50wpFlSxvVhC2UW59+cZwsn54DOzRWiuY1/awvD/CxXyT8BLYuupeotEwBrhF0jmsEMBw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:09:51.324362Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.07360","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da65bfa5a144ddb98773072a9b5e379af3d24aa847bdd56fbc1bf9a59bf326f3","sha256:b1e963429c32a6d6ad822e963bb73b7c59b66e33c8c1fd31351f407961e09950"],"state_sha256":"1312414e1f1a36b214b34129ad19492a908880fb6693698ba3b5b50bfa62bb87"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WD8j4XMrC8TCySnUZ/YmAgzPjZECIpre2EkUN60Vb6vLmpPRfEL0OoUCNs9WPx5lWwoowao9Ne0huhrPOcARBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T05:09:14.068880Z","bundle_sha256":"92793792e89884911b6b33a82ebb54de45778f174f213a5cda350be7eda596fa"}}