{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:ST5EQHRLGXPAA4VS6FNBWLKCZ5","short_pith_number":"pith:ST5EQHRL","canonical_record":{"source":{"id":"astro-ph/0004075","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-06T21:20:34Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"6f0110b9c8a31fa65dca53eaa8458be15262a11931e18bf58702789776e05e36","abstract_canon_sha256":"8c9d0551111eea3f6d57167526584bbb5fe4f29f08840fda523528c6f04791d1"},"schema_version":"1.0"},"canonical_sha256":"94fa481e2b35de0072b2f15a1b2d42cf4c3f65c60335bdb6730d94fd7cb85adc","source":{"kind":"arxiv","id":"astro-ph/0004075","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0004075","created_at":"2026-05-18T01:40:48Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0004075v2","created_at":"2026-05-18T01:40:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0004075","created_at":"2026-05-18T01:40:48Z"},{"alias_kind":"pith_short_12","alias_value":"ST5EQHRLGXPA","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"ST5EQHRLGXPAA4VS","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"ST5EQHRL","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:ST5EQHRLGXPAA4VS6FNBWLKCZ5","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0004075","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-06T21:20:34Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"6f0110b9c8a31fa65dca53eaa8458be15262a11931e18bf58702789776e05e36","abstract_canon_sha256":"8c9d0551111eea3f6d57167526584bbb5fe4f29f08840fda523528c6f04791d1"},"schema_version":"1.0"},"canonical_sha256":"94fa481e2b35de0072b2f15a1b2d42cf4c3f65c60335bdb6730d94fd7cb85adc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:48.095850Z","signature_b64":"DwBJhHP02Gs0FQIdiWonoh/CVnaVPWcNm3YXlRBy5hzJ7/7YBHfFSWeYVwYOqRjn8VMyybyaUjWQzF4ifCrwDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"94fa481e2b35de0072b2f15a1b2d42cf4c3f65c60335bdb6730d94fd7cb85adc","last_reissued_at":"2026-05-18T01:40:48.095313Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:48.095313Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0004075","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:40:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2Aafpc+/EWxqpsnDXadM6wwVIZo7QSMumoSGy1UeR2XeSj15HAzQQIQEQR7eTkV0sHRxzP4gsCnG4irzKnkIAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T22:50:20.874808Z"},"content_sha256":"103a682b128cac4943e93637a1a86bf7c41fa0877504a14ffdc98ea52d81f799","schema_version":"1.0","event_id":"sha256:103a682b128cac4943e93637a1a86bf7c41fa0877504a14ffdc98ea52d81f799"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:ST5EQHRLGXPAA4VS6FNBWLKCZ5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Cosmological Constant","license":"","headline":"","cross_cats":["gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph","authors_text":"Sean M. Carroll","submitted_at":"2000-04-06T21:20:34Z","abstract_excerpt":"This is a review of the physics and cosmology of the cosmological constant. Focusing on recent developments, I present a pedagogical overview of cosmology in the presence of a cosmological constant, observational constraints on its magnitude, and the physics of a small (and potentially nonzero) vacuum energy."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0004075","kind":"arxiv","version":2},"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":"2026-05-18T01:40:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L/AZonFP17Cc96ibTts2QvINzSP8BEowfOObshV0ERmhyeaS4D/+arSStlzleQE5rKlMRqOor0EAZBt18KxtBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T22:50:20.875149Z"},"content_sha256":"b0f08d90018043153dc49aecae6bbecc3df6c8f0727e37349c87edaa3728a1f7","schema_version":"1.0","event_id":"sha256:b0f08d90018043153dc49aecae6bbecc3df6c8f0727e37349c87edaa3728a1f7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ST5EQHRLGXPAA4VS6FNBWLKCZ5/bundle.json","state_url":"https://pith.science/pith/ST5EQHRLGXPAA4VS6FNBWLKCZ5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ST5EQHRLGXPAA4VS6FNBWLKCZ5/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":"2026-06-19T22:50:20Z","links":{"resolver":"https://pith.science/pith/ST5EQHRLGXPAA4VS6FNBWLKCZ5","bundle":"https://pith.science/pith/ST5EQHRLGXPAA4VS6FNBWLKCZ5/bundle.json","state":"https://pith.science/pith/ST5EQHRLGXPAA4VS6FNBWLKCZ5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ST5EQHRLGXPAA4VS6FNBWLKCZ5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:ST5EQHRLGXPAA4VS6FNBWLKCZ5","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":"8c9d0551111eea3f6d57167526584bbb5fe4f29f08840fda523528c6f04791d1","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-06T21:20:34Z","title_canon_sha256":"6f0110b9c8a31fa65dca53eaa8458be15262a11931e18bf58702789776e05e36"},"schema_version":"1.0","source":{"id":"astro-ph/0004075","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0004075","created_at":"2026-05-18T01:40:48Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0004075v2","created_at":"2026-05-18T01:40:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0004075","created_at":"2026-05-18T01:40:48Z"},{"alias_kind":"pith_short_12","alias_value":"ST5EQHRLGXPA","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"ST5EQHRLGXPAA4VS","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"ST5EQHRL","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:b0f08d90018043153dc49aecae6bbecc3df6c8f0727e37349c87edaa3728a1f7","target":"graph","created_at":"2026-05-18T01:40:48Z","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":"This is a review of the physics and cosmology of the cosmological constant. Focusing on recent developments, I present a pedagogical overview of cosmology in the presence of a cosmological constant, observational constraints on its magnitude, and the physics of a small (and potentially nonzero) vacuum energy.","authors_text":"Sean M. Carroll","cross_cats":["gr-qc","hep-ph","hep-th"],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-04-06T21:20:34Z","title":"The Cosmological Constant"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0004075","kind":"arxiv","version":2},"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":"sha256:103a682b128cac4943e93637a1a86bf7c41fa0877504a14ffdc98ea52d81f799","target":"record","created_at":"2026-05-18T01:40:48Z","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":"8c9d0551111eea3f6d57167526584bbb5fe4f29f08840fda523528c6f04791d1","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-06T21:20:34Z","title_canon_sha256":"6f0110b9c8a31fa65dca53eaa8458be15262a11931e18bf58702789776e05e36"},"schema_version":"1.0","source":{"id":"astro-ph/0004075","kind":"arxiv","version":2}},"canonical_sha256":"94fa481e2b35de0072b2f15a1b2d42cf4c3f65c60335bdb6730d94fd7cb85adc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"94fa481e2b35de0072b2f15a1b2d42cf4c3f65c60335bdb6730d94fd7cb85adc","first_computed_at":"2026-05-18T01:40:48.095313Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:48.095313Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DwBJhHP02Gs0FQIdiWonoh/CVnaVPWcNm3YXlRBy5hzJ7/7YBHfFSWeYVwYOqRjn8VMyybyaUjWQzF4ifCrwDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:48.095850Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0004075","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:103a682b128cac4943e93637a1a86bf7c41fa0877504a14ffdc98ea52d81f799","sha256:b0f08d90018043153dc49aecae6bbecc3df6c8f0727e37349c87edaa3728a1f7"],"state_sha256":"5807f71afc8f9978755b393f59085b0a18edc7659f75550217d38b0d20cd9101"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bCopJB0T9kFBTLjpKelagRhgvcEzt5/PZfxczlcKBr222Vd0bSY16uZhkEPNP4Qn6bViUBjrsOuTwwfBri3UAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-19T22:50:20.877233Z","bundle_sha256":"5367a4b6a90a26d11a800561e2c86dbff36359e5db89a6fd50792c1b72d6ad05"}}