{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:4DHDSQ337VNWEIQTOIUH6HLJDD","short_pith_number":"pith:4DHDSQ33","canonical_record":{"source":{"id":"1207.1105","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-04T20:00:07Z","cross_cats_sorted":[],"title_canon_sha256":"c6f5f03f8f35209520d0950c6d6a3fdddb77cf5d8276c7ee4a2fa0068e7d8277","abstract_canon_sha256":"68116f595b9fe6364501358f4cc458e6b21456ee6350f09854870d3f08186df1"},"schema_version":"1.0"},"canonical_sha256":"e0ce39437bfd5b62221372287f1d6918cbc9f2d2b75f76e96ef798cd545157a5","source":{"kind":"arxiv","id":"1207.1105","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.1105","created_at":"2026-05-18T03:44:23Z"},{"alias_kind":"arxiv_version","alias_value":"1207.1105v2","created_at":"2026-05-18T03:44:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1105","created_at":"2026-05-18T03:44:23Z"},{"alias_kind":"pith_short_12","alias_value":"4DHDSQ337VNW","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"4DHDSQ337VNWEIQT","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"4DHDSQ33","created_at":"2026-05-18T12:26:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:4DHDSQ337VNWEIQTOIUH6HLJDD","target":"record","payload":{"canonical_record":{"source":{"id":"1207.1105","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-04T20:00:07Z","cross_cats_sorted":[],"title_canon_sha256":"c6f5f03f8f35209520d0950c6d6a3fdddb77cf5d8276c7ee4a2fa0068e7d8277","abstract_canon_sha256":"68116f595b9fe6364501358f4cc458e6b21456ee6350f09854870d3f08186df1"},"schema_version":"1.0"},"canonical_sha256":"e0ce39437bfd5b62221372287f1d6918cbc9f2d2b75f76e96ef798cd545157a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:44:23.877351Z","signature_b64":"WpDhoGJckEvfI9iYp8rXGVf1KjFGtodOED/60KT/omuhLC09WjEMrKP2bmZaV3Bn/970wfP30Q0zXHFc/SvSDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e0ce39437bfd5b62221372287f1d6918cbc9f2d2b75f76e96ef798cd545157a5","last_reissued_at":"2026-05-18T03:44:23.876670Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:44:23.876670Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.1105","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":"2026-05-18T03:44:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oGyc9goqFWHvSifxoq+JNg0EHfwIT8q+muEp0rwhHou65Wqm9VqBpN+RNV71YEz95ylMQcLxJm8gH/ICpR0gAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T19:12:59.539594Z"},"content_sha256":"f6d47307ba3fbbd1b3c1fae20524914d408b1747a01b08e871adc43351b61036","schema_version":"1.0","event_id":"sha256:f6d47307ba3fbbd1b3c1fae20524914d408b1747a01b08e871adc43351b61036"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:4DHDSQ337VNWEIQTOIUH6HLJDD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"By Dawn's Early Light: CMB Polarization Impact on Cosmological Constraints","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Eric V. Linder, Sudeep Das","submitted_at":"2012-07-04T20:00:07Z","abstract_excerpt":"Cosmic microwave background polarization encodes information not only on the early universe but also dark energy, neutrino mass, and gravity in the late universe through CMB lensing. Ground based surveys such as ACTpol, PolarBear, SPTpol significantly complement cosmological constraints from the Planck satellite, strengthening the CMB dark energy figure of merit and neutrino mass constraints by factors of 3-4. This changes the dark energy probe landscape. We evaluate the state of knowledge in 2017 from ongoing experiments including dark energy surveys (supernovae, weak lensing, galaxy clusteri"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1105","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":"2026-05-18T03:44:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/8JLiLesVgGSWVi4+Rz5X2++5cV6HP7rE0+01C04OTUp/PLfVHWBRqpnyc5cyw6fiB4pieVvCGNoWEzIFussCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T19:12:59.539932Z"},"content_sha256":"e391e482b940de79e8f7c2e5331368d899bb77043bed23733045738bbeee4c6d","schema_version":"1.0","event_id":"sha256:e391e482b940de79e8f7c2e5331368d899bb77043bed23733045738bbeee4c6d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4DHDSQ337VNWEIQTOIUH6HLJDD/bundle.json","state_url":"https://pith.science/pith/4DHDSQ337VNWEIQTOIUH6HLJDD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4DHDSQ337VNWEIQTOIUH6HLJDD/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":"2026-06-01T19:12:59Z","links":{"resolver":"https://pith.science/pith/4DHDSQ337VNWEIQTOIUH6HLJDD","bundle":"https://pith.science/pith/4DHDSQ337VNWEIQTOIUH6HLJDD/bundle.json","state":"https://pith.science/pith/4DHDSQ337VNWEIQTOIUH6HLJDD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4DHDSQ337VNWEIQTOIUH6HLJDD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:4DHDSQ337VNWEIQTOIUH6HLJDD","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":"68116f595b9fe6364501358f4cc458e6b21456ee6350f09854870d3f08186df1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-04T20:00:07Z","title_canon_sha256":"c6f5f03f8f35209520d0950c6d6a3fdddb77cf5d8276c7ee4a2fa0068e7d8277"},"schema_version":"1.0","source":{"id":"1207.1105","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.1105","created_at":"2026-05-18T03:44:23Z"},{"alias_kind":"arxiv_version","alias_value":"1207.1105v2","created_at":"2026-05-18T03:44:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1105","created_at":"2026-05-18T03:44:23Z"},{"alias_kind":"pith_short_12","alias_value":"4DHDSQ337VNW","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"4DHDSQ337VNWEIQT","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"4DHDSQ33","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:e391e482b940de79e8f7c2e5331368d899bb77043bed23733045738bbeee4c6d","target":"graph","created_at":"2026-05-18T03:44:23Z","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":"Cosmic microwave background polarization encodes information not only on the early universe but also dark energy, neutrino mass, and gravity in the late universe through CMB lensing. Ground based surveys such as ACTpol, PolarBear, SPTpol significantly complement cosmological constraints from the Planck satellite, strengthening the CMB dark energy figure of merit and neutrino mass constraints by factors of 3-4. This changes the dark energy probe landscape. We evaluate the state of knowledge in 2017 from ongoing experiments including dark energy surveys (supernovae, weak lensing, galaxy clusteri","authors_text":"Eric V. Linder, Sudeep Das","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-04T20:00:07Z","title":"By Dawn's Early Light: CMB Polarization Impact on Cosmological Constraints"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1105","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:f6d47307ba3fbbd1b3c1fae20524914d408b1747a01b08e871adc43351b61036","target":"record","created_at":"2026-05-18T03:44:23Z","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":"68116f595b9fe6364501358f4cc458e6b21456ee6350f09854870d3f08186df1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-04T20:00:07Z","title_canon_sha256":"c6f5f03f8f35209520d0950c6d6a3fdddb77cf5d8276c7ee4a2fa0068e7d8277"},"schema_version":"1.0","source":{"id":"1207.1105","kind":"arxiv","version":2}},"canonical_sha256":"e0ce39437bfd5b62221372287f1d6918cbc9f2d2b75f76e96ef798cd545157a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e0ce39437bfd5b62221372287f1d6918cbc9f2d2b75f76e96ef798cd545157a5","first_computed_at":"2026-05-18T03:44:23.876670Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:44:23.876670Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WpDhoGJckEvfI9iYp8rXGVf1KjFGtodOED/60KT/omuhLC09WjEMrKP2bmZaV3Bn/970wfP30Q0zXHFc/SvSDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:44:23.877351Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.1105","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6d47307ba3fbbd1b3c1fae20524914d408b1747a01b08e871adc43351b61036","sha256:e391e482b940de79e8f7c2e5331368d899bb77043bed23733045738bbeee4c6d"],"state_sha256":"a3e62e9c05608f9d592ac9a9e1d499186496d00f84db836f6f89c8deb2d9152e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IX+QKtcpZ2e1VxEWEKHirAJh+qI+AkeUbH2FitHhZb2Y79KJAidE+ZyM6Qa0ddQUWk/oB4m9bTn8T3GHVTUHBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T19:12:59.541883Z","bundle_sha256":"41ab9d65b426fcb1d2de83ce707b0578bad5411ee604c5c5ecccbd3751109d9f"}}