{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:G2UWBA4IADUBUFZXKBYUPC2TVW","short_pith_number":"pith:G2UWBA4I","canonical_record":{"source":{"id":"1001.2726","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2010-01-15T16:21:25Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"a0f6cd842d895249ec95b74928d1d2924a53a6ef35b544bfe448e6a60ed7f5c0","abstract_canon_sha256":"b9efb97bf2d428d7bb0c20f8fb68623da9bc1a81a3c36133a4757f892aaffd5f"},"schema_version":"1.0"},"canonical_sha256":"36a960838800e81a17375071478b53ad897e24b07cbfd4c5eba5047ebc072e40","source":{"kind":"arxiv","id":"1001.2726","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.2726","created_at":"2026-05-18T02:09:43Z"},{"alias_kind":"arxiv_version","alias_value":"1001.2726v2","created_at":"2026-05-18T02:09:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.2726","created_at":"2026-05-18T02:09:43Z"},{"alias_kind":"pith_short_12","alias_value":"G2UWBA4IADUB","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"G2UWBA4IADUBUFZX","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"G2UWBA4I","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:G2UWBA4IADUBUFZXKBYUPC2TVW","target":"record","payload":{"canonical_record":{"source":{"id":"1001.2726","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2010-01-15T16:21:25Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"a0f6cd842d895249ec95b74928d1d2924a53a6ef35b544bfe448e6a60ed7f5c0","abstract_canon_sha256":"b9efb97bf2d428d7bb0c20f8fb68623da9bc1a81a3c36133a4757f892aaffd5f"},"schema_version":"1.0"},"canonical_sha256":"36a960838800e81a17375071478b53ad897e24b07cbfd4c5eba5047ebc072e40","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:09:43.713517Z","signature_b64":"NWqyyE9x/X8v5YVGoOuCZ25wxwu3RpB7h62ag3+Mv7dMWel6h/oFyt8BnRNrn4V5vrYHEoiHCuNCGgYqSE7hAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"36a960838800e81a17375071478b53ad897e24b07cbfd4c5eba5047ebc072e40","last_reissued_at":"2026-05-18T02:09:43.712928Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:09:43.712928Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.2726","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":"2026-05-18T02:09:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L+UcFG4js3P4V50JFrc3SESVr2Mkk7XwlN1jFt2gO1Ssa3QxLyXIp3Oc0BSSJ/37lRyzWiRqSZFA878RzL/yAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T06:12:55.627245Z"},"content_sha256":"6be30f12673559b0ebc4890b3b5f74fca1d6b20dd5128ed82e41114c706a4a02","schema_version":"1.0","event_id":"sha256:6be30f12673559b0ebc4890b3b5f74fca1d6b20dd5128ed82e41114c706a4a02"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:G2UWBA4IADUBUFZXKBYUPC2TVW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observables in classical canonical gravity: folklore demystified","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"D. C. Salisbury, J. M. Pons, K. A. Sundermeyer","submitted_at":"2010-01-15T16:21:25Z","abstract_excerpt":"We give an overview of some conceptual difficulties, sometimes called paradoxes, that have puzzled for years the physical interpetation of classical canonical gravity and, by extension, the canonical formulation of generally covariant theories. We identify these difficulties as stemming form some terminological misunderstandings as to what is meant by \"gauge invariance\", or what is understood classically by a \"physical state\". We make a thorough analysis of the issue and show that all purported paradoxes disappear when the right terminology is in place. Since this issue is connected with the s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.2726","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":""},"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":"2026-05-18T02:09:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lrdQms0B6ywEHhV+xF17cqv9iXU39paEVysmQweg2v7qe0wITF/9CSGbk1Erki8QQRyxLvfHMHixNbXh083+BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T06:12:55.627616Z"},"content_sha256":"542edb32cd06ed2b0bf1a0bae38a5a8f777b64abe6306740e5cd7b76f0b79ee8","schema_version":"1.0","event_id":"sha256:542edb32cd06ed2b0bf1a0bae38a5a8f777b64abe6306740e5cd7b76f0b79ee8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G2UWBA4IADUBUFZXKBYUPC2TVW/bundle.json","state_url":"https://pith.science/pith/G2UWBA4IADUBUFZXKBYUPC2TVW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G2UWBA4IADUBUFZXKBYUPC2TVW/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":"2026-07-03T06:12:55Z","links":{"resolver":"https://pith.science/pith/G2UWBA4IADUBUFZXKBYUPC2TVW","bundle":"https://pith.science/pith/G2UWBA4IADUBUFZXKBYUPC2TVW/bundle.json","state":"https://pith.science/pith/G2UWBA4IADUBUFZXKBYUPC2TVW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G2UWBA4IADUBUFZXKBYUPC2TVW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:G2UWBA4IADUBUFZXKBYUPC2TVW","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":"b9efb97bf2d428d7bb0c20f8fb68623da9bc1a81a3c36133a4757f892aaffd5f","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2010-01-15T16:21:25Z","title_canon_sha256":"a0f6cd842d895249ec95b74928d1d2924a53a6ef35b544bfe448e6a60ed7f5c0"},"schema_version":"1.0","source":{"id":"1001.2726","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.2726","created_at":"2026-05-18T02:09:43Z"},{"alias_kind":"arxiv_version","alias_value":"1001.2726v2","created_at":"2026-05-18T02:09:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.2726","created_at":"2026-05-18T02:09:43Z"},{"alias_kind":"pith_short_12","alias_value":"G2UWBA4IADUB","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"G2UWBA4IADUBUFZX","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"G2UWBA4I","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:542edb32cd06ed2b0bf1a0bae38a5a8f777b64abe6306740e5cd7b76f0b79ee8","target":"graph","created_at":"2026-05-18T02:09:43Z","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 give an overview of some conceptual difficulties, sometimes called paradoxes, that have puzzled for years the physical interpetation of classical canonical gravity and, by extension, the canonical formulation of generally covariant theories. We identify these difficulties as stemming form some terminological misunderstandings as to what is meant by \"gauge invariance\", or what is understood classically by a \"physical state\". We make a thorough analysis of the issue and show that all purported paradoxes disappear when the right terminology is in place. Since this issue is connected with the s","authors_text":"D. C. Salisbury, J. M. Pons, K. A. Sundermeyer","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2010-01-15T16:21:25Z","title":"Observables in classical canonical gravity: folklore demystified"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.2726","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":"sha256:6be30f12673559b0ebc4890b3b5f74fca1d6b20dd5128ed82e41114c706a4a02","target":"record","created_at":"2026-05-18T02:09:43Z","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":"b9efb97bf2d428d7bb0c20f8fb68623da9bc1a81a3c36133a4757f892aaffd5f","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2010-01-15T16:21:25Z","title_canon_sha256":"a0f6cd842d895249ec95b74928d1d2924a53a6ef35b544bfe448e6a60ed7f5c0"},"schema_version":"1.0","source":{"id":"1001.2726","kind":"arxiv","version":2}},"canonical_sha256":"36a960838800e81a17375071478b53ad897e24b07cbfd4c5eba5047ebc072e40","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"36a960838800e81a17375071478b53ad897e24b07cbfd4c5eba5047ebc072e40","first_computed_at":"2026-05-18T02:09:43.712928Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:09:43.712928Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NWqyyE9x/X8v5YVGoOuCZ25wxwu3RpB7h62ag3+Mv7dMWel6h/oFyt8BnRNrn4V5vrYHEoiHCuNCGgYqSE7hAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:09:43.713517Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.2726","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6be30f12673559b0ebc4890b3b5f74fca1d6b20dd5128ed82e41114c706a4a02","sha256:542edb32cd06ed2b0bf1a0bae38a5a8f777b64abe6306740e5cd7b76f0b79ee8"],"state_sha256":"ee259b4946cf7fb77d98ef3012ffc937028c8963c467d9d70de14d2affd5c5b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ppT/P0KTdaAf1OciRWzHibq92Mbt7bqPkxNYMHLc2oxUu2BOnoeSgOhJlZat5FrtbpJ7uzSWCbJU0pkDR0UWAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T06:12:55.629579Z","bundle_sha256":"18a387c441e52d143f58033d10f983beba82b41fc587a7f3459f96ad9aae43fa"}}