{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:L2QIMXXMETUDIODQ7MLJPK6FRB","short_pith_number":"pith:L2QIMXXM","canonical_record":{"source":{"id":"2501.14986","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2025-01-24T23:43:29Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"eaee300bf7eac29085550f7543fafeb88eb2b34cd4a90b87df97f062f24d0b31","abstract_canon_sha256":"fe0bd96eba5975252da8a32ecc775cbc213de5cf62a214443d8e320983d2919c"},"schema_version":"1.0"},"canonical_sha256":"5ea0865eec24e8343870fb1697abc5887392120b984958b9e06d08b6004bce03","source":{"kind":"arxiv","id":"2501.14986","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.14986","created_at":"2026-07-05T11:03:20Z"},{"alias_kind":"arxiv_version","alias_value":"2501.14986v2","created_at":"2026-07-05T11:03:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.14986","created_at":"2026-07-05T11:03:20Z"},{"alias_kind":"pith_short_12","alias_value":"L2QIMXXMETUD","created_at":"2026-07-05T11:03:20Z"},{"alias_kind":"pith_short_16","alias_value":"L2QIMXXMETUDIODQ","created_at":"2026-07-05T11:03:20Z"},{"alias_kind":"pith_short_8","alias_value":"L2QIMXXM","created_at":"2026-07-05T11:03:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:L2QIMXXMETUDIODQ7MLJPK6FRB","target":"record","payload":{"canonical_record":{"source":{"id":"2501.14986","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2025-01-24T23:43:29Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"eaee300bf7eac29085550f7543fafeb88eb2b34cd4a90b87df97f062f24d0b31","abstract_canon_sha256":"fe0bd96eba5975252da8a32ecc775cbc213de5cf62a214443d8e320983d2919c"},"schema_version":"1.0"},"canonical_sha256":"5ea0865eec24e8343870fb1697abc5887392120b984958b9e06d08b6004bce03","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:03:20.696776Z","signature_b64":"CoOIZ3u9W1rMNRsq63ggQhaP7iAP5thyq9fsmQw3aekrRgW73OvbPxYtsTaa+510G681SwAqcCcWm4a/o/EEDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5ea0865eec24e8343870fb1697abc5887392120b984958b9e06d08b6004bce03","last_reissued_at":"2026-07-05T11:03:20.696296Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:03:20.696296Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2501.14986","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":"2026-07-05T11:03:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2Ph3Ps1iZB2lDRBQ29PTyU1qExMOHHtDtidpZGnxyjPOiEfFKfuNIb/rGy7ZfCcQfzqanUvt0VmsR55NDf+xAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:00:03.782169Z"},"content_sha256":"3a466d3c83f8620b04ad1d0229ca6848c9f649818af0b1e4803691fc03e28e1b","schema_version":"1.0","event_id":"sha256:3a466d3c83f8620b04ad1d0229ca6848c9f649818af0b1e4803691fc03e28e1b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:L2QIMXXMETUDIODQ7MLJPK6FRB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Supercooled Phase Transitions: Why Thermal History of Hidden Sector Matters in Analysis of Pulsar Timing Array Signals","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"hep-ph","authors_text":"Jinzheng Li, Pran Nath","submitted_at":"2025-01-24T23:43:29Z","abstract_excerpt":"The detection of a gravitational wave background in the nano-Hertz frequency range from Pulsar Timing Array (PTA) observations offers new insights into evolution of the early universe. In this work we analyze gravitational wave data from PPTA, EPTA, and NANOGrav, as arising from a supercooled first-order phase transition within a hidden sector, characterized by a broken $U(1)_X$ gauge symmetry. Several previous works have discussed challenges in producing observable {PTA signal} from supercooled phases transitions. We discuss these challenges and show how they are overcome by inclusion in part"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.14986","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2501.14986/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":"2026-07-05T11:03:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CP8By3PUGBv5stTyR5kbPqgg/UpG8QerkofeqXQWJfjkTcTXTgukVUW2rMAsBVzwxRroaCqrQ4zbAhspkpHnDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:00:03.782553Z"},"content_sha256":"daf63dd2106ce196cd400836217df5b5699817f2d82f8fb904cc3cff0bf0d032","schema_version":"1.0","event_id":"sha256:daf63dd2106ce196cd400836217df5b5699817f2d82f8fb904cc3cff0bf0d032"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/L2QIMXXMETUDIODQ7MLJPK6FRB/bundle.json","state_url":"https://pith.science/pith/L2QIMXXMETUDIODQ7MLJPK6FRB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/L2QIMXXMETUDIODQ7MLJPK6FRB/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":"2026-08-03T16:00:03Z","links":{"resolver":"https://pith.science/pith/L2QIMXXMETUDIODQ7MLJPK6FRB","bundle":"https://pith.science/pith/L2QIMXXMETUDIODQ7MLJPK6FRB/bundle.json","state":"https://pith.science/pith/L2QIMXXMETUDIODQ7MLJPK6FRB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/L2QIMXXMETUDIODQ7MLJPK6FRB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:L2QIMXXMETUDIODQ7MLJPK6FRB","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":"fe0bd96eba5975252da8a32ecc775cbc213de5cf62a214443d8e320983d2919c","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2025-01-24T23:43:29Z","title_canon_sha256":"eaee300bf7eac29085550f7543fafeb88eb2b34cd4a90b87df97f062f24d0b31"},"schema_version":"1.0","source":{"id":"2501.14986","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.14986","created_at":"2026-07-05T11:03:20Z"},{"alias_kind":"arxiv_version","alias_value":"2501.14986v2","created_at":"2026-07-05T11:03:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.14986","created_at":"2026-07-05T11:03:20Z"},{"alias_kind":"pith_short_12","alias_value":"L2QIMXXMETUD","created_at":"2026-07-05T11:03:20Z"},{"alias_kind":"pith_short_16","alias_value":"L2QIMXXMETUDIODQ","created_at":"2026-07-05T11:03:20Z"},{"alias_kind":"pith_short_8","alias_value":"L2QIMXXM","created_at":"2026-07-05T11:03:20Z"}],"graph_snapshots":[{"event_id":"sha256:daf63dd2106ce196cd400836217df5b5699817f2d82f8fb904cc3cff0bf0d032","target":"graph","created_at":"2026-07-05T11:03:20Z","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/2501.14986/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The detection of a gravitational wave background in the nano-Hertz frequency range from Pulsar Timing Array (PTA) observations offers new insights into evolution of the early universe. In this work we analyze gravitational wave data from PPTA, EPTA, and NANOGrav, as arising from a supercooled first-order phase transition within a hidden sector, characterized by a broken $U(1)_X$ gauge symmetry. Several previous works have discussed challenges in producing observable {PTA signal} from supercooled phases transitions. We discuss these challenges and show how they are overcome by inclusion in part","authors_text":"Jinzheng Li, Pran Nath","cross_cats":["astro-ph.HE"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2025-01-24T23:43:29Z","title":"Supercooled Phase Transitions: Why Thermal History of Hidden Sector Matters in Analysis of Pulsar Timing Array Signals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.14986","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":"sha256:3a466d3c83f8620b04ad1d0229ca6848c9f649818af0b1e4803691fc03e28e1b","target":"record","created_at":"2026-07-05T11:03:20Z","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":"fe0bd96eba5975252da8a32ecc775cbc213de5cf62a214443d8e320983d2919c","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2025-01-24T23:43:29Z","title_canon_sha256":"eaee300bf7eac29085550f7543fafeb88eb2b34cd4a90b87df97f062f24d0b31"},"schema_version":"1.0","source":{"id":"2501.14986","kind":"arxiv","version":2}},"canonical_sha256":"5ea0865eec24e8343870fb1697abc5887392120b984958b9e06d08b6004bce03","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5ea0865eec24e8343870fb1697abc5887392120b984958b9e06d08b6004bce03","first_computed_at":"2026-07-05T11:03:20.696296Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:03:20.696296Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CoOIZ3u9W1rMNRsq63ggQhaP7iAP5thyq9fsmQw3aekrRgW73OvbPxYtsTaa+510G681SwAqcCcWm4a/o/EEDA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:03:20.696776Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.14986","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a466d3c83f8620b04ad1d0229ca6848c9f649818af0b1e4803691fc03e28e1b","sha256:daf63dd2106ce196cd400836217df5b5699817f2d82f8fb904cc3cff0bf0d032"],"state_sha256":"b6ce063e8d26adc7851989d66374094d2141d25adc136e421cd2293b00e1f61f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gg23EQzV9eSH4oNcRf+lgYbrcREcATkSGy7XqpSsOvuoXyWf4ZUDgB2du4vOQcBGFtJfEeLzp/tzb0IqbtFzDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T16:00:03.785245Z","bundle_sha256":"05481e113cedd98fba37e5902ddde72f07f221cfc74a21d336724cedb0e55c6f"}}