{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:T7D7IOBLVWITR3LRBR6ANGO3VE","short_pith_number":"pith:T7D7IOBL","canonical_record":{"source":{"id":"2209.14282","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-09-28T17:49:40Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"425f619b26c114e72a2cfeb4d6282b266878647671663522f3fd6bf85e39c31d","abstract_canon_sha256":"6fbdf22d4f97379fda182a78d0bb3e2f72af95a714af79615751169f3d1ccc6a"},"schema_version":"1.0"},"canonical_sha256":"9fc7f4382bad9138ed710c7c0699dba9050587bbba2cf6c5f594bde93a754084","source":{"kind":"arxiv","id":"2209.14282","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.14282","created_at":"2026-07-05T06:10:20Z"},{"alias_kind":"arxiv_version","alias_value":"2209.14282v3","created_at":"2026-07-05T06:10:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.14282","created_at":"2026-07-05T06:10:20Z"},{"alias_kind":"pith_short_12","alias_value":"T7D7IOBLVWIT","created_at":"2026-07-05T06:10:20Z"},{"alias_kind":"pith_short_16","alias_value":"T7D7IOBLVWITR3LR","created_at":"2026-07-05T06:10:20Z"},{"alias_kind":"pith_short_8","alias_value":"T7D7IOBL","created_at":"2026-07-05T06:10:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:T7D7IOBLVWITR3LRBR6ANGO3VE","target":"record","payload":{"canonical_record":{"source":{"id":"2209.14282","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-09-28T17:49:40Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"425f619b26c114e72a2cfeb4d6282b266878647671663522f3fd6bf85e39c31d","abstract_canon_sha256":"6fbdf22d4f97379fda182a78d0bb3e2f72af95a714af79615751169f3d1ccc6a"},"schema_version":"1.0"},"canonical_sha256":"9fc7f4382bad9138ed710c7c0699dba9050587bbba2cf6c5f594bde93a754084","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:10:20.082529Z","signature_b64":"0N+2udcWsMl5bax2sPZlMIZDvzveGjazM045MUuP92P0zZvEfZuYO/NtrBHypwiBQGwz1VM0GRLati1IlhnvBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9fc7f4382bad9138ed710c7c0699dba9050587bbba2cf6c5f594bde93a754084","last_reissued_at":"2026-07-05T06:10:20.082177Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:10:20.082177Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2209.14282","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:10:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2laiuH8DheQrAD0p9UgTxXVzeCCoOseUXuy0B50HQsKTwls35CDTzn4LT1r+Gk+1krMB2+yvcdUwEfY5NI14CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T23:23:50.619621Z"},"content_sha256":"1f8fc34fe09a3c8a5037f9793aec347f8203db41c17707c4c395538113f235dd","schema_version":"1.0","event_id":"sha256:1f8fc34fe09a3c8a5037f9793aec347f8203db41c17707c4c395538113f235dd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:T7D7IOBLVWITR3LRBR6ANGO3VE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spacetime foam: a review","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"S. Carlip","submitted_at":"2022-09-28T17:49:40Z","abstract_excerpt":"More than 65 years ago, John Wheeler suggested that quantum uncertainties of the metric would be of order one at the Planck scale, leading to large fluctuations in spacetime geometry and topology, which he termed \"spacetime foam.\" In this review I discuss various attempts to implement this idea and to test it, both theoretically and, to a lesser extent, observationally."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.14282","kind":"arxiv","version":3},"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/2209.14282/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":"2026-07-05T06:10:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qzSJKRMaH/dOagyT2nWKqArX/OGHyVz5foU3uJ+NwxwY2sHYxcLvfeM+gAcI2yC5WIz0qGGitu4nNMu9cG5tCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T23:23:50.620346Z"},"content_sha256":"2a5e8c562a3eb69dc156dadfe08628b0ccdda659650d75ce80b76ac96dcd748e","schema_version":"1.0","event_id":"sha256:2a5e8c562a3eb69dc156dadfe08628b0ccdda659650d75ce80b76ac96dcd748e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T7D7IOBLVWITR3LRBR6ANGO3VE/bundle.json","state_url":"https://pith.science/pith/T7D7IOBLVWITR3LRBR6ANGO3VE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T7D7IOBLVWITR3LRBR6ANGO3VE/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":"2026-08-13T23:23:50Z","links":{"resolver":"https://pith.science/pith/T7D7IOBLVWITR3LRBR6ANGO3VE","bundle":"https://pith.science/pith/T7D7IOBLVWITR3LRBR6ANGO3VE/bundle.json","state":"https://pith.science/pith/T7D7IOBLVWITR3LRBR6ANGO3VE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T7D7IOBLVWITR3LRBR6ANGO3VE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:T7D7IOBLVWITR3LRBR6ANGO3VE","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":"6fbdf22d4f97379fda182a78d0bb3e2f72af95a714af79615751169f3d1ccc6a","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-09-28T17:49:40Z","title_canon_sha256":"425f619b26c114e72a2cfeb4d6282b266878647671663522f3fd6bf85e39c31d"},"schema_version":"1.0","source":{"id":"2209.14282","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.14282","created_at":"2026-07-05T06:10:20Z"},{"alias_kind":"arxiv_version","alias_value":"2209.14282v3","created_at":"2026-07-05T06:10:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.14282","created_at":"2026-07-05T06:10:20Z"},{"alias_kind":"pith_short_12","alias_value":"T7D7IOBLVWIT","created_at":"2026-07-05T06:10:20Z"},{"alias_kind":"pith_short_16","alias_value":"T7D7IOBLVWITR3LR","created_at":"2026-07-05T06:10:20Z"},{"alias_kind":"pith_short_8","alias_value":"T7D7IOBL","created_at":"2026-07-05T06:10:20Z"}],"graph_snapshots":[{"event_id":"sha256:2a5e8c562a3eb69dc156dadfe08628b0ccdda659650d75ce80b76ac96dcd748e","target":"graph","created_at":"2026-07-05T06:10:20Z","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/2209.14282/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"More than 65 years ago, John Wheeler suggested that quantum uncertainties of the metric would be of order one at the Planck scale, leading to large fluctuations in spacetime geometry and topology, which he termed \"spacetime foam.\" In this review I discuss various attempts to implement this idea and to test it, both theoretically and, to a lesser extent, observationally.","authors_text":"S. Carlip","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-09-28T17:49:40Z","title":"Spacetime foam: a review"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.14282","kind":"arxiv","version":3},"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":"sha256:1f8fc34fe09a3c8a5037f9793aec347f8203db41c17707c4c395538113f235dd","target":"record","created_at":"2026-07-05T06:10:20Z","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":"6fbdf22d4f97379fda182a78d0bb3e2f72af95a714af79615751169f3d1ccc6a","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2022-09-28T17:49:40Z","title_canon_sha256":"425f619b26c114e72a2cfeb4d6282b266878647671663522f3fd6bf85e39c31d"},"schema_version":"1.0","source":{"id":"2209.14282","kind":"arxiv","version":3}},"canonical_sha256":"9fc7f4382bad9138ed710c7c0699dba9050587bbba2cf6c5f594bde93a754084","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9fc7f4382bad9138ed710c7c0699dba9050587bbba2cf6c5f594bde93a754084","first_computed_at":"2026-07-05T06:10:20.082177Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:10:20.082177Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0N+2udcWsMl5bax2sPZlMIZDvzveGjazM045MUuP92P0zZvEfZuYO/NtrBHypwiBQGwz1VM0GRLati1IlhnvBg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:10:20.082529Z","signed_message":"canonical_sha256_bytes"},"source_id":"2209.14282","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1f8fc34fe09a3c8a5037f9793aec347f8203db41c17707c4c395538113f235dd","sha256:2a5e8c562a3eb69dc156dadfe08628b0ccdda659650d75ce80b76ac96dcd748e"],"state_sha256":"0c9b7f7337a474d2e6a94cfdafbd2bbd835fe01f94bd9927ee551faa9c60eefd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qZqEVL0IAsUz7dGJ0RKFbQKc1aI76Whx4PDHm2VohtJWY2zqYOM1f5TG+0E4jQI5lpTjraCRdIm78HXQzkYmCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T23:23:50.627186Z","bundle_sha256":"16c53fa1810a9e442a6771a363810aa9d0800da8150df8ceb167882a4852264f"}}