{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:L2VAJVR3TVZTFVXYPZRPSLHF4C","short_pith_number":"pith:L2VAJVR3","canonical_record":{"source":{"id":"1210.0201","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-09-30T13:54:32Z","cross_cats_sorted":["astro-ph.CO","gr-qc"],"title_canon_sha256":"330205683b1f1dbb8f28f34df8b825c5df15d5b2aca7af9e664156ed8a190c95","abstract_canon_sha256":"18a34979c53850ef3e9eecd72cf39d90789b407d09cd0aec365bccaaf0721644"},"schema_version":"1.0"},"canonical_sha256":"5eaa04d63b9d7332d6f87e62f92ce5e09a283b2a7351308017a4d9ba42ce1c72","source":{"kind":"arxiv","id":"1210.0201","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.0201","created_at":"2026-05-18T01:54:12Z"},{"alias_kind":"arxiv_version","alias_value":"1210.0201v2","created_at":"2026-05-18T01:54:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.0201","created_at":"2026-05-18T01:54:12Z"},{"alias_kind":"pith_short_12","alias_value":"L2VAJVR3TVZT","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"L2VAJVR3TVZTFVXY","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"L2VAJVR3","created_at":"2026-05-18T12:27:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:L2VAJVR3TVZTFVXYPZRPSLHF4C","target":"record","payload":{"canonical_record":{"source":{"id":"1210.0201","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-09-30T13:54:32Z","cross_cats_sorted":["astro-ph.CO","gr-qc"],"title_canon_sha256":"330205683b1f1dbb8f28f34df8b825c5df15d5b2aca7af9e664156ed8a190c95","abstract_canon_sha256":"18a34979c53850ef3e9eecd72cf39d90789b407d09cd0aec365bccaaf0721644"},"schema_version":"1.0"},"canonical_sha256":"5eaa04d63b9d7332d6f87e62f92ce5e09a283b2a7351308017a4d9ba42ce1c72","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:12.439139Z","signature_b64":"cjqqpE4yBVIcrCMXELhge5wQShChBXXALh8zC+wzcpllqKTTGbZCEhDxxolNFnw63VuQYeZndHOL28/ObcycDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5eaa04d63b9d7332d6f87e62f92ce5e09a283b2a7351308017a4d9ba42ce1c72","last_reissued_at":"2026-05-18T01:54:12.438454Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:12.438454Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.0201","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":"2026-05-18T01:54:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lIo6ERGM7bLiq0dP3p1I6pc+jQ+aUyYbRE7zgI2ZBF98s4w5RAwQ1uBX6MMgtitFUgWI4CT+5mlvq7FFgGnZCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:31:15.820067Z"},"content_sha256":"67f3b1ada45a95287e5752d038a6063fb8fdc8061530f21c1c3542c8e9e36daf","schema_version":"1.0","event_id":"sha256:67f3b1ada45a95287e5752d038a6063fb8fdc8061530f21c1c3542c8e9e36daf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:L2VAJVR3TVZTFVXYPZRPSLHF4C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Effective Field Theory of Dark Energy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc"],"primary_cat":"hep-th","authors_text":"Federico Piazza, Filippo Vernizzi, Giulia Gubitosi","submitted_at":"2012-09-30T13:54:32Z","abstract_excerpt":"We propose a universal description of dark energy and modified gravity that includes all single-field models. By extending a formalism previously applied to inflation, we consider the metric universally coupled to matter fields and we write in terms of it the most general unitary gauge action consistent with the residual unbroken symmetries of spatial diffeomorphisms. Our action is particularly suited for cosmological perturbation theory: the background evolution depends on only three operators. All other operators start at least at quadratic order in the perturbations and their effects can be"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.0201","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":"2026-05-18T01:54:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2ZYnnV0/v7HzWWmMFETU5hoaqggXp/XoPuxev1rr5Pu9FlqP9hNxhsGoQKH5TA9LFBV+OEixfjNNIa3Mi8MtAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:31:15.820670Z"},"content_sha256":"7a22ebdca5438dd6606b9c5554a91081d4f4fa2545669bee3f835c75a354b6fc","schema_version":"1.0","event_id":"sha256:7a22ebdca5438dd6606b9c5554a91081d4f4fa2545669bee3f835c75a354b6fc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/L2VAJVR3TVZTFVXYPZRPSLHF4C/bundle.json","state_url":"https://pith.science/pith/L2VAJVR3TVZTFVXYPZRPSLHF4C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/L2VAJVR3TVZTFVXYPZRPSLHF4C/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":"2026-05-30T06:31:15Z","links":{"resolver":"https://pith.science/pith/L2VAJVR3TVZTFVXYPZRPSLHF4C","bundle":"https://pith.science/pith/L2VAJVR3TVZTFVXYPZRPSLHF4C/bundle.json","state":"https://pith.science/pith/L2VAJVR3TVZTFVXYPZRPSLHF4C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/L2VAJVR3TVZTFVXYPZRPSLHF4C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:L2VAJVR3TVZTFVXYPZRPSLHF4C","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":"18a34979c53850ef3e9eecd72cf39d90789b407d09cd0aec365bccaaf0721644","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-09-30T13:54:32Z","title_canon_sha256":"330205683b1f1dbb8f28f34df8b825c5df15d5b2aca7af9e664156ed8a190c95"},"schema_version":"1.0","source":{"id":"1210.0201","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.0201","created_at":"2026-05-18T01:54:12Z"},{"alias_kind":"arxiv_version","alias_value":"1210.0201v2","created_at":"2026-05-18T01:54:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.0201","created_at":"2026-05-18T01:54:12Z"},{"alias_kind":"pith_short_12","alias_value":"L2VAJVR3TVZT","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"L2VAJVR3TVZTFVXY","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"L2VAJVR3","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:7a22ebdca5438dd6606b9c5554a91081d4f4fa2545669bee3f835c75a354b6fc","target":"graph","created_at":"2026-05-18T01:54:12Z","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":"We propose a universal description of dark energy and modified gravity that includes all single-field models. By extending a formalism previously applied to inflation, we consider the metric universally coupled to matter fields and we write in terms of it the most general unitary gauge action consistent with the residual unbroken symmetries of spatial diffeomorphisms. Our action is particularly suited for cosmological perturbation theory: the background evolution depends on only three operators. All other operators start at least at quadratic order in the perturbations and their effects can be","authors_text":"Federico Piazza, Filippo Vernizzi, Giulia Gubitosi","cross_cats":["astro-ph.CO","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-09-30T13:54:32Z","title":"The Effective Field Theory of Dark Energy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.0201","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":"sha256:67f3b1ada45a95287e5752d038a6063fb8fdc8061530f21c1c3542c8e9e36daf","target":"record","created_at":"2026-05-18T01:54:12Z","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":"18a34979c53850ef3e9eecd72cf39d90789b407d09cd0aec365bccaaf0721644","cross_cats_sorted":["astro-ph.CO","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2012-09-30T13:54:32Z","title_canon_sha256":"330205683b1f1dbb8f28f34df8b825c5df15d5b2aca7af9e664156ed8a190c95"},"schema_version":"1.0","source":{"id":"1210.0201","kind":"arxiv","version":2}},"canonical_sha256":"5eaa04d63b9d7332d6f87e62f92ce5e09a283b2a7351308017a4d9ba42ce1c72","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5eaa04d63b9d7332d6f87e62f92ce5e09a283b2a7351308017a4d9ba42ce1c72","first_computed_at":"2026-05-18T01:54:12.438454Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:12.438454Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cjqqpE4yBVIcrCMXELhge5wQShChBXXALh8zC+wzcpllqKTTGbZCEhDxxolNFnw63VuQYeZndHOL28/ObcycDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:12.439139Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.0201","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67f3b1ada45a95287e5752d038a6063fb8fdc8061530f21c1c3542c8e9e36daf","sha256:7a22ebdca5438dd6606b9c5554a91081d4f4fa2545669bee3f835c75a354b6fc"],"state_sha256":"8485c6c5dd8d0b754dae739392d17fc299ee13c8de45a6ec76a188a3650f3dfe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xUBcwWhHk2MTJas2VtBx4EWcdJbdGmAybaNOlmRvt5sqYhkrhBvMqfgvUgfXfPN7laMNQGc2r+JxjGBXomh3DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T06:31:15.823918Z","bundle_sha256":"c17fe1e378dd9e56565d083440bdeca6ca4a5639d297e1b015b6a9dd1d55c04d"}}