{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:LAWE2C6EQKGY2EGEJMOTZKGRJE","short_pith_number":"pith:LAWE2C6E","canonical_record":{"source":{"id":"1201.3654","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-01-17T22:12:30Z","cross_cats_sorted":[],"title_canon_sha256":"655638306951fa11ea747a844a25d53fc40c6718241c1047191394daffe9295f","abstract_canon_sha256":"a565f37288a4a8517ac06a8ec6920e1a55c08be74bca2d1e51ea5e6ef5bc543a"},"schema_version":"1.0"},"canonical_sha256":"582c4d0bc4828d8d10c44b1d3ca8d149352b60d9f906cb80ab179f1433894092","source":{"kind":"arxiv","id":"1201.3654","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.3654","created_at":"2026-05-18T03:57:26Z"},{"alias_kind":"arxiv_version","alias_value":"1201.3654v2","created_at":"2026-05-18T03:57:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.3654","created_at":"2026-05-18T03:57:26Z"},{"alias_kind":"pith_short_12","alias_value":"LAWE2C6EQKGY","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LAWE2C6EQKGY2EGE","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LAWE2C6E","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:LAWE2C6EQKGY2EGEJMOTZKGRJE","target":"record","payload":{"canonical_record":{"source":{"id":"1201.3654","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-01-17T22:12:30Z","cross_cats_sorted":[],"title_canon_sha256":"655638306951fa11ea747a844a25d53fc40c6718241c1047191394daffe9295f","abstract_canon_sha256":"a565f37288a4a8517ac06a8ec6920e1a55c08be74bca2d1e51ea5e6ef5bc543a"},"schema_version":"1.0"},"canonical_sha256":"582c4d0bc4828d8d10c44b1d3ca8d149352b60d9f906cb80ab179f1433894092","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:57:26.610710Z","signature_b64":"EdV/wO9jxmH2xtSqMBMn/gOQIshbBTXwz7Efm7Ovql9wXHY0igiyvSOraZKd16MbETpnRaeDp948ZilHHbbIAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"582c4d0bc4828d8d10c44b1d3ca8d149352b60d9f906cb80ab179f1433894092","last_reissued_at":"2026-05-18T03:57:26.609897Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:57:26.609897Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1201.3654","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":"2026-05-18T03:57:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BDeqQna11wBbXbM5k0u7ABDmpLGknzraQuXkH06sepeIlB3e1bIM3KyE7bAg7uf0aahCUJlyWAHPgvQSfHd/DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T14:17:01.341540Z"},"content_sha256":"283cf522516b9a464ebe42f7590b80010080a1b541791c443a6bac96aee6a8b5","schema_version":"1.0","event_id":"sha256:283cf522516b9a464ebe42f7590b80010080a1b541791c443a6bac96aee6a8b5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:LAWE2C6EQKGY2EGEJMOTZKGRJE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CMB power spectrum parameter degeneracies in the era of precision cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Alex Hall, Anthony Challinor, Antony Lewis, Cullan Howlett","submitted_at":"2012-01-17T22:12:30Z","abstract_excerpt":"Cosmological parameter constraints from the CMB power spectra alone suffer several well-known degeneracies. These degeneracies can be broken by numerical artefacts and also a variety of physical effects that become quantitatively important with high-accuracy data e.g. from the Planck satellite. We study degeneracies in models with flat and non-flat spatial sections, non-trivial dark energy and massive neutrinos, and investigate the importance of various physical degeneracy-breaking effects. We test the CAMB power spectrum code for numerical accuracy, and demonstrate that the numerical calculat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.3654","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":"2026-05-18T03:57:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JbdGVKj/HPkARNumKBDBMcH8znfWYKnrtL10M3/AiA6lWC9bDAAgiv5DPLesRSOWEX7FXxWVewVgHb/pyNHuDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T14:17:01.342265Z"},"content_sha256":"3bb964d1f2f09de9cc7ae001e1c78a403bdef34079d865c8d6d444864431f608","schema_version":"1.0","event_id":"sha256:3bb964d1f2f09de9cc7ae001e1c78a403bdef34079d865c8d6d444864431f608"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LAWE2C6EQKGY2EGEJMOTZKGRJE/bundle.json","state_url":"https://pith.science/pith/LAWE2C6EQKGY2EGEJMOTZKGRJE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LAWE2C6EQKGY2EGEJMOTZKGRJE/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":"2026-06-06T14:17:01Z","links":{"resolver":"https://pith.science/pith/LAWE2C6EQKGY2EGEJMOTZKGRJE","bundle":"https://pith.science/pith/LAWE2C6EQKGY2EGEJMOTZKGRJE/bundle.json","state":"https://pith.science/pith/LAWE2C6EQKGY2EGEJMOTZKGRJE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LAWE2C6EQKGY2EGEJMOTZKGRJE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:LAWE2C6EQKGY2EGEJMOTZKGRJE","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":"a565f37288a4a8517ac06a8ec6920e1a55c08be74bca2d1e51ea5e6ef5bc543a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-01-17T22:12:30Z","title_canon_sha256":"655638306951fa11ea747a844a25d53fc40c6718241c1047191394daffe9295f"},"schema_version":"1.0","source":{"id":"1201.3654","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.3654","created_at":"2026-05-18T03:57:26Z"},{"alias_kind":"arxiv_version","alias_value":"1201.3654v2","created_at":"2026-05-18T03:57:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.3654","created_at":"2026-05-18T03:57:26Z"},{"alias_kind":"pith_short_12","alias_value":"LAWE2C6EQKGY","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LAWE2C6EQKGY2EGE","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LAWE2C6E","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:3bb964d1f2f09de9cc7ae001e1c78a403bdef34079d865c8d6d444864431f608","target":"graph","created_at":"2026-05-18T03:57:26Z","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":"Cosmological parameter constraints from the CMB power spectra alone suffer several well-known degeneracies. These degeneracies can be broken by numerical artefacts and also a variety of physical effects that become quantitatively important with high-accuracy data e.g. from the Planck satellite. We study degeneracies in models with flat and non-flat spatial sections, non-trivial dark energy and massive neutrinos, and investigate the importance of various physical degeneracy-breaking effects. We test the CAMB power spectrum code for numerical accuracy, and demonstrate that the numerical calculat","authors_text":"Alex Hall, Anthony Challinor, Antony Lewis, Cullan Howlett","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-01-17T22:12:30Z","title":"CMB power spectrum parameter degeneracies in the era of precision cosmology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.3654","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":"sha256:283cf522516b9a464ebe42f7590b80010080a1b541791c443a6bac96aee6a8b5","target":"record","created_at":"2026-05-18T03:57:26Z","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":"a565f37288a4a8517ac06a8ec6920e1a55c08be74bca2d1e51ea5e6ef5bc543a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-01-17T22:12:30Z","title_canon_sha256":"655638306951fa11ea747a844a25d53fc40c6718241c1047191394daffe9295f"},"schema_version":"1.0","source":{"id":"1201.3654","kind":"arxiv","version":2}},"canonical_sha256":"582c4d0bc4828d8d10c44b1d3ca8d149352b60d9f906cb80ab179f1433894092","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"582c4d0bc4828d8d10c44b1d3ca8d149352b60d9f906cb80ab179f1433894092","first_computed_at":"2026-05-18T03:57:26.609897Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:57:26.609897Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EdV/wO9jxmH2xtSqMBMn/gOQIshbBTXwz7Efm7Ovql9wXHY0igiyvSOraZKd16MbETpnRaeDp948ZilHHbbIAg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:57:26.610710Z","signed_message":"canonical_sha256_bytes"},"source_id":"1201.3654","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:283cf522516b9a464ebe42f7590b80010080a1b541791c443a6bac96aee6a8b5","sha256:3bb964d1f2f09de9cc7ae001e1c78a403bdef34079d865c8d6d444864431f608"],"state_sha256":"c417366f4bb1acceab0cdf6fe7b4d5dfa01df9ec7a44468c2e0bd60944f8cb8c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fmJwuWQRUIvLdSd4PuKgjr0dZ0YUWQ6eD93xP9zSdwyBYHQMT/6AwArN1Kz/HoH4lDJ5fUp92+B4K51EThalDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T14:17:01.345829Z","bundle_sha256":"c6a360021bde7e3ca35916f5218002309e5beff4af0ac0597cd3afabeee88936"}}