{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1993:THPVF4SIILCVVOXZKH42FATCUY","short_pith_number":"pith:THPVF4SI","canonical_record":{"source":{"id":"gr-qc/9301010","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"1993-01-12T18:16:00Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"8a72e990e93bc29f3d4d2c7b6373278d642f87c2abb609b8de869c64d16833c9","abstract_canon_sha256":"ca4cfa7464bb15db10856770cb03cfe14c09bb6aea9e7103115fbdb13157e48f"},"schema_version":"1.0"},"canonical_sha256":"99df52f24842c55abaf951f9a28262a63a5cd4a0cc4723e49164a02336fa3e21","source":{"kind":"arxiv","id":"gr-qc/9301010","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/9301010","created_at":"2026-07-04T15:55:37Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/9301010v1","created_at":"2026-07-04T15:55:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/9301010","created_at":"2026-07-04T15:55:37Z"},{"alias_kind":"pith_short_12","alias_value":"THPVF4SIILCV","created_at":"2026-07-04T15:55:37Z"},{"alias_kind":"pith_short_16","alias_value":"THPVF4SIILCVVOXZ","created_at":"2026-07-04T15:55:37Z"},{"alias_kind":"pith_short_8","alias_value":"THPVF4SI","created_at":"2026-07-04T15:55:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1993:THPVF4SIILCVVOXZKH42FATCUY","target":"record","payload":{"canonical_record":{"source":{"id":"gr-qc/9301010","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"1993-01-12T18:16:00Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"8a72e990e93bc29f3d4d2c7b6373278d642f87c2abb609b8de869c64d16833c9","abstract_canon_sha256":"ca4cfa7464bb15db10856770cb03cfe14c09bb6aea9e7103115fbdb13157e48f"},"schema_version":"1.0"},"canonical_sha256":"99df52f24842c55abaf951f9a28262a63a5cd4a0cc4723e49164a02336fa3e21","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:55:37.813852Z","signature_b64":"fPgcVYHcknqkR0PyBAlJUBvFVixPQ+YyUwQekrmIx15pENnwd0K+6BY3tn0MxXX4fDnYNcxOLYhCM5UtV4zSCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"99df52f24842c55abaf951f9a28262a63a5cd4a0cc4723e49164a02336fa3e21","last_reissued_at":"2026-07-04T15:55:37.813452Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:55:37.813452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"gr-qc/9301010","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":"2026-07-04T15:55:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sj2MMQMdiAaq54bIN2h86uD7/TrOldphFGT6Ai2I/lRa19wViRLFZR/tHa7YxOdTU/iJF0/zMN+Eox37gmnqCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T02:03:54.018319Z"},"content_sha256":"a0817b2d61b26bc91fcd9c222bc25dc088b249ca0efd2dc155651a469796bec7","schema_version":"1.0","event_id":"sha256:a0817b2d61b26bc91fcd9c222bc25dc088b249ca0efd2dc155651a469796bec7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1993:THPVF4SIILCVVOXZKH42FATCUY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Entropy Production in the Cosmological Amplification of the Vacuum Fluctuations","license":"","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"M.Gasperini, M.Giovannini","submitted_at":"1993-01-12T18:16:00Z","abstract_excerpt":"We estimate the entropy associated to a background of squeezed cosmic gravitons, and we argue that the process of cosmological pair production from the vacuum may explain the large amount of entropy of our present universe."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/9301010","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/gr-qc/9301010/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":"2026-07-04T15:55:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2PMgGFnG9VZNwOa6BEAWS0jACpYo71aH7IyO8T9r3Wplw2TkhN9GEXXD1zAiQAOhAABRFOUzFjz20MZJ2JnJBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T02:03:54.018871Z"},"content_sha256":"30745ec8328e850460d8011e4f971e68a95f027819fa9f44fc9bc2fd5a4662d1","schema_version":"1.0","event_id":"sha256:30745ec8328e850460d8011e4f971e68a95f027819fa9f44fc9bc2fd5a4662d1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/THPVF4SIILCVVOXZKH42FATCUY/bundle.json","state_url":"https://pith.science/pith/THPVF4SIILCVVOXZKH42FATCUY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/THPVF4SIILCVVOXZKH42FATCUY/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":"2026-08-22T02:03:54Z","links":{"resolver":"https://pith.science/pith/THPVF4SIILCVVOXZKH42FATCUY","bundle":"https://pith.science/pith/THPVF4SIILCVVOXZKH42FATCUY/bundle.json","state":"https://pith.science/pith/THPVF4SIILCVVOXZKH42FATCUY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/THPVF4SIILCVVOXZKH42FATCUY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1993:THPVF4SIILCVVOXZKH42FATCUY","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":"ca4cfa7464bb15db10856770cb03cfe14c09bb6aea9e7103115fbdb13157e48f","cross_cats_sorted":["hep-th"],"license":"","primary_cat":"gr-qc","submitted_at":"1993-01-12T18:16:00Z","title_canon_sha256":"8a72e990e93bc29f3d4d2c7b6373278d642f87c2abb609b8de869c64d16833c9"},"schema_version":"1.0","source":{"id":"gr-qc/9301010","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/9301010","created_at":"2026-07-04T15:55:37Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/9301010v1","created_at":"2026-07-04T15:55:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/9301010","created_at":"2026-07-04T15:55:37Z"},{"alias_kind":"pith_short_12","alias_value":"THPVF4SIILCV","created_at":"2026-07-04T15:55:37Z"},{"alias_kind":"pith_short_16","alias_value":"THPVF4SIILCVVOXZ","created_at":"2026-07-04T15:55:37Z"},{"alias_kind":"pith_short_8","alias_value":"THPVF4SI","created_at":"2026-07-04T15:55:37Z"}],"graph_snapshots":[{"event_id":"sha256:30745ec8328e850460d8011e4f971e68a95f027819fa9f44fc9bc2fd5a4662d1","target":"graph","created_at":"2026-07-04T15:55:37Z","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/gr-qc/9301010/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We estimate the entropy associated to a background of squeezed cosmic gravitons, and we argue that the process of cosmological pair production from the vacuum may explain the large amount of entropy of our present universe.","authors_text":"M.Gasperini, M.Giovannini","cross_cats":["hep-th"],"headline":"","license":"","primary_cat":"gr-qc","submitted_at":"1993-01-12T18:16:00Z","title":"Entropy Production in the Cosmological Amplification of the Vacuum Fluctuations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/9301010","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:a0817b2d61b26bc91fcd9c222bc25dc088b249ca0efd2dc155651a469796bec7","target":"record","created_at":"2026-07-04T15:55:37Z","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":"ca4cfa7464bb15db10856770cb03cfe14c09bb6aea9e7103115fbdb13157e48f","cross_cats_sorted":["hep-th"],"license":"","primary_cat":"gr-qc","submitted_at":"1993-01-12T18:16:00Z","title_canon_sha256":"8a72e990e93bc29f3d4d2c7b6373278d642f87c2abb609b8de869c64d16833c9"},"schema_version":"1.0","source":{"id":"gr-qc/9301010","kind":"arxiv","version":1}},"canonical_sha256":"99df52f24842c55abaf951f9a28262a63a5cd4a0cc4723e49164a02336fa3e21","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"99df52f24842c55abaf951f9a28262a63a5cd4a0cc4723e49164a02336fa3e21","first_computed_at":"2026-07-04T15:55:37.813452Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:55:37.813452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fPgcVYHcknqkR0PyBAlJUBvFVixPQ+YyUwQekrmIx15pENnwd0K+6BY3tn0MxXX4fDnYNcxOLYhCM5UtV4zSCw==","signature_status":"signed_v1","signed_at":"2026-07-04T15:55:37.813852Z","signed_message":"canonical_sha256_bytes"},"source_id":"gr-qc/9301010","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0817b2d61b26bc91fcd9c222bc25dc088b249ca0efd2dc155651a469796bec7","sha256:30745ec8328e850460d8011e4f971e68a95f027819fa9f44fc9bc2fd5a4662d1"],"state_sha256":"7fb3fa392d9fa8ed9de3702de0de413c493bf1abf6489ec675a2895aec272baa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5PHN2zqNlzN8yhKaKY8+4KozYbE5jP3O1krWxy3x20By/AbboqMAHMliu6JvFMjw+NfKzvN99AlqrU+CQutjBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T02:03:54.023443Z","bundle_sha256":"4bbf488fe1012058018266eefd861fe43eedfd1f45c8dfd07f68562487256dbc"}}