{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:JMFKZEHTTKFIUCIUHU3MB6C7SH","short_pith_number":"pith:JMFKZEHT","canonical_record":{"source":{"id":"2008.12399","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-08-27T22:51:50Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"cfcea5014bf6ae496324b8aef3a4a1ead329dd9ae06f1bbcafc79b791ca2da2d","abstract_canon_sha256":"f998c9da137d689c0e0ef101ea00cf61c298838dd34904c892b6ec899cbd6ea1"},"schema_version":"1.0"},"canonical_sha256":"4b0aac90f39a8a8a09143d36c0f85f91dc8f60dbcf2eb86df5a0802c7e51442a","source":{"kind":"arxiv","id":"2008.12399","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.12399","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"arxiv_version","alias_value":"2008.12399v4","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.12399","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"pith_short_12","alias_value":"JMFKZEHTTKFI","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"pith_short_16","alias_value":"JMFKZEHTTKFIUCIU","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"pith_short_8","alias_value":"JMFKZEHT","created_at":"2026-07-05T02:13:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:JMFKZEHTTKFIUCIUHU3MB6C7SH","target":"record","payload":{"canonical_record":{"source":{"id":"2008.12399","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-08-27T22:51:50Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"cfcea5014bf6ae496324b8aef3a4a1ead329dd9ae06f1bbcafc79b791ca2da2d","abstract_canon_sha256":"f998c9da137d689c0e0ef101ea00cf61c298838dd34904c892b6ec899cbd6ea1"},"schema_version":"1.0"},"canonical_sha256":"4b0aac90f39a8a8a09143d36c0f85f91dc8f60dbcf2eb86df5a0802c7e51442a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:13:33.839274Z","signature_b64":"vi0dhPeysJIQHLm1kSYNI8fBf0TA5gFuW34x9gjr3jQUs+3xQfDQ7qPV48B+lNwTn9WaKY+wkPa8SuopnCo9Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4b0aac90f39a8a8a09143d36c0f85f91dc8f60dbcf2eb86df5a0802c7e51442a","last_reissued_at":"2026-07-05T02:13:33.838845Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:13:33.838845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.12399","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:13:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BglnKmPOLvrjjxvaJtBRmZKSobLoa9e/JZpFqqxZAv6nIQo14aUoXs4aPzyRFokinseCb3ZNQH6EVw4XAGrbBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T08:07:36.972002Z"},"content_sha256":"ea7d30306b5a9ff8c9c9fb7b9e7838af432908c3beb5abb92e456a23b875ed38","schema_version":"1.0","event_id":"sha256:ea7d30306b5a9ff8c9c9fb7b9e7838af432908c3beb5abb92e456a23b875ed38"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:JMFKZEHTTKFIUCIUHU3MB6C7SH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Obstacles to Constructing de Sitter Space in String Theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-th","authors_text":"Duncan Wood, Jamie A.P. Law-Smith, Michael Dine, Shijun Sun, Yan Yu","submitted_at":"2020-08-27T22:51:50Z","abstract_excerpt":"There have been many attempts to construct de Sitter space-times in string theory. While arguably there have been some successes, this has proven challenging, leading to the de Sitter swampland conjecture: quantum theories of gravity do not admit stable or metastable de Sitter space. Here we explain that, within controlled approximations, one lacks the tools to construct de Sitter space in string theory. Such approximations would require the existence of a set of (arbitrarily) small parameters, subject to severe constraints. But beyond this one also needs an understanding of big-bang and big-c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.12399","kind":"arxiv","version":4},"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/2008.12399/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":"2026-07-05T02:13:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hrLZo9T2LwsEYcrL2cC3wCiMf2rPYMfeizKwY35CHSFhtPSpF7n3l1RGbPQQLa9iGqbIEj4uGJZpvtZWc4jaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T08:07:36.972521Z"},"content_sha256":"96aaaeb8fe474d0e0db25e27b1212611dc636de147d823c0dfb3c3e7fd82c7f1","schema_version":"1.0","event_id":"sha256:96aaaeb8fe474d0e0db25e27b1212611dc636de147d823c0dfb3c3e7fd82c7f1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JMFKZEHTTKFIUCIUHU3MB6C7SH/bundle.json","state_url":"https://pith.science/pith/JMFKZEHTTKFIUCIUHU3MB6C7SH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JMFKZEHTTKFIUCIUHU3MB6C7SH/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":"2026-08-14T08:07:36Z","links":{"resolver":"https://pith.science/pith/JMFKZEHTTKFIUCIUHU3MB6C7SH","bundle":"https://pith.science/pith/JMFKZEHTTKFIUCIUHU3MB6C7SH/bundle.json","state":"https://pith.science/pith/JMFKZEHTTKFIUCIUHU3MB6C7SH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JMFKZEHTTKFIUCIUHU3MB6C7SH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:JMFKZEHTTKFIUCIUHU3MB6C7SH","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":"f998c9da137d689c0e0ef101ea00cf61c298838dd34904c892b6ec899cbd6ea1","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-08-27T22:51:50Z","title_canon_sha256":"cfcea5014bf6ae496324b8aef3a4a1ead329dd9ae06f1bbcafc79b791ca2da2d"},"schema_version":"1.0","source":{"id":"2008.12399","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.12399","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"arxiv_version","alias_value":"2008.12399v4","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.12399","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"pith_short_12","alias_value":"JMFKZEHTTKFI","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"pith_short_16","alias_value":"JMFKZEHTTKFIUCIU","created_at":"2026-07-05T02:13:33Z"},{"alias_kind":"pith_short_8","alias_value":"JMFKZEHT","created_at":"2026-07-05T02:13:33Z"}],"graph_snapshots":[{"event_id":"sha256:96aaaeb8fe474d0e0db25e27b1212611dc636de147d823c0dfb3c3e7fd82c7f1","target":"graph","created_at":"2026-07-05T02:13:33Z","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/2008.12399/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"There have been many attempts to construct de Sitter space-times in string theory. While arguably there have been some successes, this has proven challenging, leading to the de Sitter swampland conjecture: quantum theories of gravity do not admit stable or metastable de Sitter space. Here we explain that, within controlled approximations, one lacks the tools to construct de Sitter space in string theory. Such approximations would require the existence of a set of (arbitrarily) small parameters, subject to severe constraints. But beyond this one also needs an understanding of big-bang and big-c","authors_text":"Duncan Wood, Jamie A.P. Law-Smith, Michael Dine, Shijun Sun, Yan Yu","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-08-27T22:51:50Z","title":"Obstacles to Constructing de Sitter Space in String Theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.12399","kind":"arxiv","version":4},"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:ea7d30306b5a9ff8c9c9fb7b9e7838af432908c3beb5abb92e456a23b875ed38","target":"record","created_at":"2026-07-05T02:13:33Z","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":"f998c9da137d689c0e0ef101ea00cf61c298838dd34904c892b6ec899cbd6ea1","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-08-27T22:51:50Z","title_canon_sha256":"cfcea5014bf6ae496324b8aef3a4a1ead329dd9ae06f1bbcafc79b791ca2da2d"},"schema_version":"1.0","source":{"id":"2008.12399","kind":"arxiv","version":4}},"canonical_sha256":"4b0aac90f39a8a8a09143d36c0f85f91dc8f60dbcf2eb86df5a0802c7e51442a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4b0aac90f39a8a8a09143d36c0f85f91dc8f60dbcf2eb86df5a0802c7e51442a","first_computed_at":"2026-07-05T02:13:33.838845Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:13:33.838845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vi0dhPeysJIQHLm1kSYNI8fBf0TA5gFuW34x9gjr3jQUs+3xQfDQ7qPV48B+lNwTn9WaKY+wkPa8SuopnCo9Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:13:33.839274Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.12399","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ea7d30306b5a9ff8c9c9fb7b9e7838af432908c3beb5abb92e456a23b875ed38","sha256:96aaaeb8fe474d0e0db25e27b1212611dc636de147d823c0dfb3c3e7fd82c7f1"],"state_sha256":"6f5d3107e48f89aa51597d221d780b96148663e0107fd916dad523d798fb4271"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FUIjTSmyEM7QVRgAXrTRSPsTB+w4uq8yAaMlJCH3OVTVdK/80PHSVy+UEn+p0zzviPXey4OKR0gMjH9kU5GSBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T08:07:36.978207Z","bundle_sha256":"2dac9ffa7187b5b1285ac29f965d9c3fb788f7501ac7f2dfd24a21e164b00ab5"}}