{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:75GB3JH7TXIXJAIL7JGHY5C7UZ","short_pith_number":"pith:75GB3JH7","canonical_record":{"source":{"id":"0906.1313","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-06-06T23:48:55Z","cross_cats_sorted":[],"title_canon_sha256":"0eeb792e1101986f16e504b4cc4708e6c08692f4b361b733b4d81e34b82464b5","abstract_canon_sha256":"dbead82fea7b7653a93f6f03065b6fb8813b5e2763a1e52fa05cb1ebe574438b"},"schema_version":"1.0"},"canonical_sha256":"ff4c1da4ff9dd174810bfa4c7c745fa6619193e454fa08ea3ee18445f6d8aacd","source":{"kind":"arxiv","id":"0906.1313","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.1313","created_at":"2026-07-04T15:53:37Z"},{"alias_kind":"arxiv_version","alias_value":"0906.1313v1","created_at":"2026-07-04T15:53:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.1313","created_at":"2026-07-04T15:53:37Z"},{"alias_kind":"pith_short_12","alias_value":"75GB3JH7TXIX","created_at":"2026-07-04T15:53:37Z"},{"alias_kind":"pith_short_16","alias_value":"75GB3JH7TXIXJAIL","created_at":"2026-07-04T15:53:37Z"},{"alias_kind":"pith_short_8","alias_value":"75GB3JH7","created_at":"2026-07-04T15:53:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:75GB3JH7TXIXJAIL7JGHY5C7UZ","target":"record","payload":{"canonical_record":{"source":{"id":"0906.1313","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-06-06T23:48:55Z","cross_cats_sorted":[],"title_canon_sha256":"0eeb792e1101986f16e504b4cc4708e6c08692f4b361b733b4d81e34b82464b5","abstract_canon_sha256":"dbead82fea7b7653a93f6f03065b6fb8813b5e2763a1e52fa05cb1ebe574438b"},"schema_version":"1.0"},"canonical_sha256":"ff4c1da4ff9dd174810bfa4c7c745fa6619193e454fa08ea3ee18445f6d8aacd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:53:37.552725Z","signature_b64":"tm1ASJPVNy7hQOlKbI9yWkNQ7Qi2///Q2IflZlk4dFISxERJutL8cqQSsp8cqBr/yfTcWWCyNtGIFZZYrWS9Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ff4c1da4ff9dd174810bfa4c7c745fa6619193e454fa08ea3ee18445f6d8aacd","last_reissued_at":"2026-07-04T15:53:37.552310Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:53:37.552310Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0906.1313","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":"2026-07-04T15:53:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yZ0cj6wmsQT0CEyLvbZx71MYlYw2jxnM5fDbKmkRHIoiaQIV1dGK1QrAKoKcfmanioC27Ld6bYi0HPF0cqwnBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T15:35:54.285414Z"},"content_sha256":"cd40cc86032e9f1a1b80c46fa48c4bc26ec7aed3e90445d74d55c76a5ba1c639","schema_version":"1.0","event_id":"sha256:cd40cc86032e9f1a1b80c46fa48c4bc26ec7aed3e90445d74d55c76a5ba1c639"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:75GB3JH7TXIXJAIL7JGHY5C7UZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Five Problems in Quantum Gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Andrew Strominger","submitted_at":"2009-06-06T23:48:55Z","abstract_excerpt":"We present five open problems in quantum gravity which one might reasonably hope to solve in the next decade. Hints appearing in the literature are summarized for each one."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.1313","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/0906.1313/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":"2026-07-04T15:53:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rxD1LvxdLw134qzhBF233DBQ1Ew47gK50quiwndymVeVcyq8d8CHpWRZBF9Aq0FYwG6kqCkNbFBIt3zu3YpQBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T15:35:54.285946Z"},"content_sha256":"c3d502f9399e7bb27617dc45a223f6ff1a1d4d276847ba656ff85c3a7f3fa993","schema_version":"1.0","event_id":"sha256:c3d502f9399e7bb27617dc45a223f6ff1a1d4d276847ba656ff85c3a7f3fa993"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/75GB3JH7TXIXJAIL7JGHY5C7UZ/bundle.json","state_url":"https://pith.science/pith/75GB3JH7TXIXJAIL7JGHY5C7UZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/75GB3JH7TXIXJAIL7JGHY5C7UZ/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":"2026-08-12T15:35:54Z","links":{"resolver":"https://pith.science/pith/75GB3JH7TXIXJAIL7JGHY5C7UZ","bundle":"https://pith.science/pith/75GB3JH7TXIXJAIL7JGHY5C7UZ/bundle.json","state":"https://pith.science/pith/75GB3JH7TXIXJAIL7JGHY5C7UZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/75GB3JH7TXIXJAIL7JGHY5C7UZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:75GB3JH7TXIXJAIL7JGHY5C7UZ","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":"dbead82fea7b7653a93f6f03065b6fb8813b5e2763a1e52fa05cb1ebe574438b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-06-06T23:48:55Z","title_canon_sha256":"0eeb792e1101986f16e504b4cc4708e6c08692f4b361b733b4d81e34b82464b5"},"schema_version":"1.0","source":{"id":"0906.1313","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.1313","created_at":"2026-07-04T15:53:37Z"},{"alias_kind":"arxiv_version","alias_value":"0906.1313v1","created_at":"2026-07-04T15:53:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.1313","created_at":"2026-07-04T15:53:37Z"},{"alias_kind":"pith_short_12","alias_value":"75GB3JH7TXIX","created_at":"2026-07-04T15:53:37Z"},{"alias_kind":"pith_short_16","alias_value":"75GB3JH7TXIXJAIL","created_at":"2026-07-04T15:53:37Z"},{"alias_kind":"pith_short_8","alias_value":"75GB3JH7","created_at":"2026-07-04T15:53:37Z"}],"graph_snapshots":[{"event_id":"sha256:c3d502f9399e7bb27617dc45a223f6ff1a1d4d276847ba656ff85c3a7f3fa993","target":"graph","created_at":"2026-07-04T15:53:37Z","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/0906.1313/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present five open problems in quantum gravity which one might reasonably hope to solve in the next decade. Hints appearing in the literature are summarized for each one.","authors_text":"Andrew Strominger","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-06-06T23:48:55Z","title":"Five Problems in Quantum Gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.1313","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:cd40cc86032e9f1a1b80c46fa48c4bc26ec7aed3e90445d74d55c76a5ba1c639","target":"record","created_at":"2026-07-04T15:53:37Z","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":"dbead82fea7b7653a93f6f03065b6fb8813b5e2763a1e52fa05cb1ebe574438b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2009-06-06T23:48:55Z","title_canon_sha256":"0eeb792e1101986f16e504b4cc4708e6c08692f4b361b733b4d81e34b82464b5"},"schema_version":"1.0","source":{"id":"0906.1313","kind":"arxiv","version":1}},"canonical_sha256":"ff4c1da4ff9dd174810bfa4c7c745fa6619193e454fa08ea3ee18445f6d8aacd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff4c1da4ff9dd174810bfa4c7c745fa6619193e454fa08ea3ee18445f6d8aacd","first_computed_at":"2026-07-04T15:53:37.552310Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:53:37.552310Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tm1ASJPVNy7hQOlKbI9yWkNQ7Qi2///Q2IflZlk4dFISxERJutL8cqQSsp8cqBr/yfTcWWCyNtGIFZZYrWS9Ag==","signature_status":"signed_v1","signed_at":"2026-07-04T15:53:37.552725Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.1313","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cd40cc86032e9f1a1b80c46fa48c4bc26ec7aed3e90445d74d55c76a5ba1c639","sha256:c3d502f9399e7bb27617dc45a223f6ff1a1d4d276847ba656ff85c3a7f3fa993"],"state_sha256":"d7771c24b6d9c100573d34251a312ffd66adab5cbafa5881d38b2f07d4ce28c9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NTI+vnxU8HZcoubmHU+vBG0gjBIE8ETEGaHabad2boPiQaDaXPCqw33gUAoSel1MqbU1xA1REXbDezvWVJ9JBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T15:35:54.289927Z","bundle_sha256":"db793e4625d56aefda4cbe8abd9e1f29c99ddc7a679fed948fff38d6882f72ca"}}