{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:IKBUWC5KJNJKFKVAQP7NIJJRHL","short_pith_number":"pith:IKBUWC5K","canonical_record":{"source":{"id":"2605.26116","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-25T17:59:53Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"8ff0a4e4365ea688f214c2874663af229af364e7540f9fefb55e96d0dcbcef08","abstract_canon_sha256":"388a17d8a42adb967d0520349ed7a5f07f49f37e357e3a1de2ecf24b6c072e41"},"schema_version":"1.0"},"canonical_sha256":"42834b0baa4b52a2aaa083fed425313ac2fcc0f372ee59c40b377f5ac376f80e","source":{"kind":"arxiv","id":"2605.26116","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.26116","created_at":"2026-05-26T03:05:25Z"},{"alias_kind":"arxiv_version","alias_value":"2605.26116v1","created_at":"2026-05-26T03:05:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.26116","created_at":"2026-05-26T03:05:25Z"},{"alias_kind":"pith_short_12","alias_value":"IKBUWC5KJNJK","created_at":"2026-05-26T03:05:25Z"},{"alias_kind":"pith_short_16","alias_value":"IKBUWC5KJNJKFKVA","created_at":"2026-05-26T03:05:25Z"},{"alias_kind":"pith_short_8","alias_value":"IKBUWC5K","created_at":"2026-05-26T03:05:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:IKBUWC5KJNJKFKVAQP7NIJJRHL","target":"record","payload":{"canonical_record":{"source":{"id":"2605.26116","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-25T17:59:53Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"8ff0a4e4365ea688f214c2874663af229af364e7540f9fefb55e96d0dcbcef08","abstract_canon_sha256":"388a17d8a42adb967d0520349ed7a5f07f49f37e357e3a1de2ecf24b6c072e41"},"schema_version":"1.0"},"canonical_sha256":"42834b0baa4b52a2aaa083fed425313ac2fcc0f372ee59c40b377f5ac376f80e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-26T03:05:25.185337Z","signature_b64":"HsW1tqQvnAaSm3ryAvRGp2RSuM+V9SN0IFAW3fkynClG33s8zvRCb3MsT37aV9mn8eiUwQyWvXHYMCQbTZlIAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"42834b0baa4b52a2aaa083fed425313ac2fcc0f372ee59c40b377f5ac376f80e","last_reissued_at":"2026-05-26T03:05:25.184254Z","signature_status":"signed_v1","first_computed_at":"2026-05-26T03:05:25.184254Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.26116","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":"2026-05-26T03:05:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iUZ8sU+rk0QhwENURjjeXaO2/ayFEi2E7cLqu1cUNcHQDcDlTJI0ZQjucbtJK6CNVU4GEmvu2vD5qhugD7sUAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T12:43:06.533557Z"},"content_sha256":"197c0b00a7c7eac2fce9cb737d0c212ddc58f16ae705c5bd1f5ab68842c99470","schema_version":"1.0","event_id":"sha256:197c0b00a7c7eac2fce9cb737d0c212ddc58f16ae705c5bd1f5ab68842c99470"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:IKBUWC5KJNJKFKVAQP7NIJJRHL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unifying Early and Late Dark Energy: Dynamical Requirements and Obstructions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Jeremy Sakstein, William Giar\\`e","submitted_at":"2026-05-25T17:59:53Z","abstract_excerpt":"We investigate whether early- and late-time dark energy could arise from a single scalar field. Adopting a bottom-up perspective, we first identify the sequence of dynamical regimes that any unified scenario must traverse to account for both an early dark energy phase relevant for pre-recombination solutions of the Hubble tension and the late-time acceleration of the Universe. We derive the corresponding requirements on the scalar energy density and equation of state. We then adopt a complementary top-down perspective and translate these requirements into constraints on the phase-space structu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.26116","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.26116/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-05-26T03:05:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H06dRQCVsfcJTRXH2+k+2GSr9Gq9osygaWiO4KIEA0IXK71NqS8tB0+TX8eiIApC+b1FjotAxmSj5DHjub/8Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T12:43:06.534340Z"},"content_sha256":"dd9849a7058aa39d3e5b4c311d7bbb493cb13686c23bc82c0b618658153562ad","schema_version":"1.0","event_id":"sha256:dd9849a7058aa39d3e5b4c311d7bbb493cb13686c23bc82c0b618658153562ad"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IKBUWC5KJNJKFKVAQP7NIJJRHL/bundle.json","state_url":"https://pith.science/pith/IKBUWC5KJNJKFKVAQP7NIJJRHL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IKBUWC5KJNJKFKVAQP7NIJJRHL/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":"2026-06-10T12:43:06Z","links":{"resolver":"https://pith.science/pith/IKBUWC5KJNJKFKVAQP7NIJJRHL","bundle":"https://pith.science/pith/IKBUWC5KJNJKFKVAQP7NIJJRHL/bundle.json","state":"https://pith.science/pith/IKBUWC5KJNJKFKVAQP7NIJJRHL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IKBUWC5KJNJKFKVAQP7NIJJRHL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:IKBUWC5KJNJKFKVAQP7NIJJRHL","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":"388a17d8a42adb967d0520349ed7a5f07f49f37e357e3a1de2ecf24b6c072e41","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-25T17:59:53Z","title_canon_sha256":"8ff0a4e4365ea688f214c2874663af229af364e7540f9fefb55e96d0dcbcef08"},"schema_version":"1.0","source":{"id":"2605.26116","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.26116","created_at":"2026-05-26T03:05:25Z"},{"alias_kind":"arxiv_version","alias_value":"2605.26116v1","created_at":"2026-05-26T03:05:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.26116","created_at":"2026-05-26T03:05:25Z"},{"alias_kind":"pith_short_12","alias_value":"IKBUWC5KJNJK","created_at":"2026-05-26T03:05:25Z"},{"alias_kind":"pith_short_16","alias_value":"IKBUWC5KJNJKFKVA","created_at":"2026-05-26T03:05:25Z"},{"alias_kind":"pith_short_8","alias_value":"IKBUWC5K","created_at":"2026-05-26T03:05:25Z"}],"graph_snapshots":[{"event_id":"sha256:dd9849a7058aa39d3e5b4c311d7bbb493cb13686c23bc82c0b618658153562ad","target":"graph","created_at":"2026-05-26T03:05:25Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2605.26116/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate whether early- and late-time dark energy could arise from a single scalar field. Adopting a bottom-up perspective, we first identify the sequence of dynamical regimes that any unified scenario must traverse to account for both an early dark energy phase relevant for pre-recombination solutions of the Hubble tension and the late-time acceleration of the Universe. We derive the corresponding requirements on the scalar energy density and equation of state. We then adopt a complementary top-down perspective and translate these requirements into constraints on the phase-space structu","authors_text":"Jeremy Sakstein, William Giar\\`e","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-25T17:59:53Z","title":"Unifying Early and Late Dark Energy: Dynamical Requirements and Obstructions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.26116","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":"sha256:197c0b00a7c7eac2fce9cb737d0c212ddc58f16ae705c5bd1f5ab68842c99470","target":"record","created_at":"2026-05-26T03:05:25Z","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":"388a17d8a42adb967d0520349ed7a5f07f49f37e357e3a1de2ecf24b6c072e41","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-05-25T17:59:53Z","title_canon_sha256":"8ff0a4e4365ea688f214c2874663af229af364e7540f9fefb55e96d0dcbcef08"},"schema_version":"1.0","source":{"id":"2605.26116","kind":"arxiv","version":1}},"canonical_sha256":"42834b0baa4b52a2aaa083fed425313ac2fcc0f372ee59c40b377f5ac376f80e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"42834b0baa4b52a2aaa083fed425313ac2fcc0f372ee59c40b377f5ac376f80e","first_computed_at":"2026-05-26T03:05:25.184254Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-26T03:05:25.184254Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HsW1tqQvnAaSm3ryAvRGp2RSuM+V9SN0IFAW3fkynClG33s8zvRCb3MsT37aV9mn8eiUwQyWvXHYMCQbTZlIAw==","signature_status":"signed_v1","signed_at":"2026-05-26T03:05:25.185337Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.26116","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:197c0b00a7c7eac2fce9cb737d0c212ddc58f16ae705c5bd1f5ab68842c99470","sha256:dd9849a7058aa39d3e5b4c311d7bbb493cb13686c23bc82c0b618658153562ad"],"state_sha256":"ea221204757d4d3a80b1e3121f65172ec0966fdffc17622a1939a91b22bf87e4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zkTn6EXc+3KnWa9YA5sxqbpGP4+nuVRQyQbx1AJmZl72tOONo4if+X8JOpQcd/dWpQ3JNs4LzQNSWWVsSsvWCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T12:43:06.538689Z","bundle_sha256":"23224d61393412124ce987a212bba7d8cef61541790840c385090bc5def62926"}}