{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:LSDEQX7JCIHCNFI2YVVVE2BJQU","short_pith_number":"pith:LSDEQX7J","canonical_record":{"source":{"id":"1804.07162","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-18T08:47:11Z","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"title_canon_sha256":"e51f6f3062a125cc630434a95755d45e7044fa3d378ccf7123289ad636a0fd70","abstract_canon_sha256":"5ecc33ba36a9a5bb1bc417dd302f876249258c432ef6e96656956ff16abe8b4b"},"schema_version":"1.0"},"canonical_sha256":"5c86485fe9120e26951ac56b5268298503b11627b4f5562cfeb82219e4b493a7","source":{"kind":"arxiv","id":"1804.07162","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.07162","created_at":"2026-05-17T23:58:04Z"},{"alias_kind":"arxiv_version","alias_value":"1804.07162v1","created_at":"2026-05-17T23:58:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.07162","created_at":"2026-05-17T23:58:04Z"},{"alias_kind":"pith_short_12","alias_value":"LSDEQX7JCIHC","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"LSDEQX7JCIHCNFI2","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"LSDEQX7J","created_at":"2026-05-18T12:32:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:LSDEQX7JCIHCNFI2YVVVE2BJQU","target":"record","payload":{"canonical_record":{"source":{"id":"1804.07162","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-18T08:47:11Z","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"title_canon_sha256":"e51f6f3062a125cc630434a95755d45e7044fa3d378ccf7123289ad636a0fd70","abstract_canon_sha256":"5ecc33ba36a9a5bb1bc417dd302f876249258c432ef6e96656956ff16abe8b4b"},"schema_version":"1.0"},"canonical_sha256":"5c86485fe9120e26951ac56b5268298503b11627b4f5562cfeb82219e4b493a7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:58:04.988149Z","signature_b64":"AByD1Mdi2PTHW+NNu2LjYrYGV4OtRX1VexTqj0tYTsbkEzFXoP03cIyLEW1pvCE57YxCh1NQ8j0dw1cmodI8Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5c86485fe9120e26951ac56b5268298503b11627b4f5562cfeb82219e4b493a7","last_reissued_at":"2026-05-17T23:58:04.987707Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:58:04.987707Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.07162","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":"2026-05-17T23:58:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tZqPjXZyFv5CXutgIV4PUHwbQt3ZpujBa+joU1gqejOJc+cXmZxVuIOEYJEGhcvAyEA6+QV1E0ug1WrgZOfSDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:13:41.803066Z"},"content_sha256":"022b1436ab579cc18342fbb28f957ae589390824acfdaf41ea19d97f183c3ba2","schema_version":"1.0","event_id":"sha256:022b1436ab579cc18342fbb28f957ae589390824acfdaf41ea19d97f183c3ba2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:LSDEQX7JCIHCNFI2YVVVE2BJQU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A microscopic model for an emergent cosmological constant","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-ph","hep-th"],"primary_cat":"gr-qc","authors_text":"Alejandro Perez, Daniel Sudarsky, James D. Bjorken","submitted_at":"2018-04-18T08:47:11Z","abstract_excerpt":"The value of the cosmological constant is explained in terms of a noisy diffusion of energy from the low energy particle physics degrees of freedom to the fundamental Planckian granularity which is expected from general arguments in quantum gravity. The quantitative success of our phenomenological model is encouraging and provides possibly useful insights about physics at the scale of quantum gravity."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07162","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":""},"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":"2026-05-17T23:58:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kUCAN5zwTRv90p3M0NXx052fwZ7p/FwYkTpjLsoI51t4QOOG/GG76FNq1CiGaQKAx4jfyjZ+vA/e9bYZYfDWBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:13:41.803444Z"},"content_sha256":"7d915eb2b7df0f8c1aff5b676007f4eff6ac80fe14e131d37a2842146158f230","schema_version":"1.0","event_id":"sha256:7d915eb2b7df0f8c1aff5b676007f4eff6ac80fe14e131d37a2842146158f230"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LSDEQX7JCIHCNFI2YVVVE2BJQU/bundle.json","state_url":"https://pith.science/pith/LSDEQX7JCIHCNFI2YVVVE2BJQU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LSDEQX7JCIHCNFI2YVVVE2BJQU/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":"2026-06-01T04:13:41Z","links":{"resolver":"https://pith.science/pith/LSDEQX7JCIHCNFI2YVVVE2BJQU","bundle":"https://pith.science/pith/LSDEQX7JCIHCNFI2YVVVE2BJQU/bundle.json","state":"https://pith.science/pith/LSDEQX7JCIHCNFI2YVVVE2BJQU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LSDEQX7JCIHCNFI2YVVVE2BJQU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:LSDEQX7JCIHCNFI2YVVVE2BJQU","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":"5ecc33ba36a9a5bb1bc417dd302f876249258c432ef6e96656956ff16abe8b4b","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-18T08:47:11Z","title_canon_sha256":"e51f6f3062a125cc630434a95755d45e7044fa3d378ccf7123289ad636a0fd70"},"schema_version":"1.0","source":{"id":"1804.07162","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.07162","created_at":"2026-05-17T23:58:04Z"},{"alias_kind":"arxiv_version","alias_value":"1804.07162v1","created_at":"2026-05-17T23:58:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.07162","created_at":"2026-05-17T23:58:04Z"},{"alias_kind":"pith_short_12","alias_value":"LSDEQX7JCIHC","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"LSDEQX7JCIHCNFI2","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"LSDEQX7J","created_at":"2026-05-18T12:32:37Z"}],"graph_snapshots":[{"event_id":"sha256:7d915eb2b7df0f8c1aff5b676007f4eff6ac80fe14e131d37a2842146158f230","target":"graph","created_at":"2026-05-17T23:58:04Z","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":"The value of the cosmological constant is explained in terms of a noisy diffusion of energy from the low energy particle physics degrees of freedom to the fundamental Planckian granularity which is expected from general arguments in quantum gravity. The quantitative success of our phenomenological model is encouraging and provides possibly useful insights about physics at the scale of quantum gravity.","authors_text":"Alejandro Perez, Daniel Sudarsky, James D. Bjorken","cross_cats":["astro-ph.CO","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-18T08:47:11Z","title":"A microscopic model for an emergent cosmological constant"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07162","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":"sha256:022b1436ab579cc18342fbb28f957ae589390824acfdaf41ea19d97f183c3ba2","target":"record","created_at":"2026-05-17T23:58:04Z","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":"5ecc33ba36a9a5bb1bc417dd302f876249258c432ef6e96656956ff16abe8b4b","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-18T08:47:11Z","title_canon_sha256":"e51f6f3062a125cc630434a95755d45e7044fa3d378ccf7123289ad636a0fd70"},"schema_version":"1.0","source":{"id":"1804.07162","kind":"arxiv","version":1}},"canonical_sha256":"5c86485fe9120e26951ac56b5268298503b11627b4f5562cfeb82219e4b493a7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5c86485fe9120e26951ac56b5268298503b11627b4f5562cfeb82219e4b493a7","first_computed_at":"2026-05-17T23:58:04.987707Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:58:04.987707Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AByD1Mdi2PTHW+NNu2LjYrYGV4OtRX1VexTqj0tYTsbkEzFXoP03cIyLEW1pvCE57YxCh1NQ8j0dw1cmodI8Aw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:58:04.988149Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.07162","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:022b1436ab579cc18342fbb28f957ae589390824acfdaf41ea19d97f183c3ba2","sha256:7d915eb2b7df0f8c1aff5b676007f4eff6ac80fe14e131d37a2842146158f230"],"state_sha256":"4cb98f12bcfae15b0dee494b9da566cc927508e9865c094cf4df6f583345720a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q9npqfZLmzmFZ7xT0pRAJFZ3JYwn+xPtxuWHbOmY0ePZa6l5QF6Z8Mh8Latp/5e57v93+fW3YRWocA5QdivxAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T04:13:41.805642Z","bundle_sha256":"7d473f60920aef62298397916437c3bf32eaf1b4832e526c70261e8c58911472"}}