{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:YYC64CM3O66QDUDIJAHUDQZLYH","short_pith_number":"pith:YYC64CM3","canonical_record":{"source":{"id":"2308.03512","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-08-07T12:07:08Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"dd9f3a93cf18b04577e4235ab0f075b8c041f502c12bb2dc6c47e8a0786a4d35","abstract_canon_sha256":"628d3fe15cb3038042debcae550634f773cfa2650ffa22f47a2dcf94dbfe5502"},"schema_version":"1.0"},"canonical_sha256":"c605ee099b77bd01d068480f41c32bc1d0649d38d84699604f1c12d2b6f99723","source":{"kind":"arxiv","id":"2308.03512","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.03512","created_at":"2026-07-05T06:38:17Z"},{"alias_kind":"arxiv_version","alias_value":"2308.03512v1","created_at":"2026-07-05T06:38:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.03512","created_at":"2026-07-05T06:38:17Z"},{"alias_kind":"pith_short_12","alias_value":"YYC64CM3O66Q","created_at":"2026-07-05T06:38:17Z"},{"alias_kind":"pith_short_16","alias_value":"YYC64CM3O66QDUDI","created_at":"2026-07-05T06:38:17Z"},{"alias_kind":"pith_short_8","alias_value":"YYC64CM3","created_at":"2026-07-05T06:38:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:YYC64CM3O66QDUDIJAHUDQZLYH","target":"record","payload":{"canonical_record":{"source":{"id":"2308.03512","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-08-07T12:07:08Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"dd9f3a93cf18b04577e4235ab0f075b8c041f502c12bb2dc6c47e8a0786a4d35","abstract_canon_sha256":"628d3fe15cb3038042debcae550634f773cfa2650ffa22f47a2dcf94dbfe5502"},"schema_version":"1.0"},"canonical_sha256":"c605ee099b77bd01d068480f41c32bc1d0649d38d84699604f1c12d2b6f99723","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:38:17.966526Z","signature_b64":"SPXco/MfFRcWYiFbjA/regyMRXPhrdYQTBUd73ZPZleYOUmma/WfMEDwI4VFvEe9LS0m7if3ZRcRJDzJTQJ8Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c605ee099b77bd01d068480f41c32bc1d0649d38d84699604f1c12d2b6f99723","last_reissued_at":"2026-07-05T06:38:17.966097Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:38:17.966097Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.03512","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":"2026-07-05T06:38:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iDPu6TJ2F+DIK6OBxkJq7r6YtyNxKJZ4mdF7st5tFvqdOOjVrlKqfdDnv7+3Bc6ZpM1O2tyD9C+5765bGgKrDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T18:09:58.330740Z"},"content_sha256":"6eeeaf19fc18c79467c7419e6abaf6d4e83e31ad8b2d9265669abcad6d915411","schema_version":"1.0","event_id":"sha256:6eeeaf19fc18c79467c7419e6abaf6d4e83e31ad8b2d9265669abcad6d915411"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:YYC64CM3O66QDUDIJAHUDQZLYH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A cosmic string solution to the radio synchrotron background","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Bryce Cyr, Jens Chluba, Sandeep Kumar Acharya","submitted_at":"2023-08-07T12:07:08Z","abstract_excerpt":"We investigate the low-frequency spectral emission from a network of superconducting cosmic string loops in hopes of explaining the observed radio synchrotron background. After considering constraints from a variety of astrophysical and cosmological measurements, we identify a best-fit solution with string tension $G\\mu \\simeq 6.5 \\times 10^{-12}$ and current $\\mathcal{I} \\simeq 2.5 \\times 10^6$ GeV. This model yields a convincing fit to the data and may be testable in the near future by spectral distortion (TMS, BISOU) and 21 cm experiments (HERA, SKA, REACH). We also find that soft photon he"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.03512","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/2308.03512/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":"2026-07-05T06:38:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GG6jbCVu+3a7qTgfdY2rQQecQlrWi8Pu/aoKqVmi05VSX5fppxkrb/lkCUCyTdpiofcjYyJJa4gM3tg3ktOTCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T18:09:58.331671Z"},"content_sha256":"548416cbf500ebf2f74499fd2e9355a1ac624966b35ec40a7d891a80a85c329a","schema_version":"1.0","event_id":"sha256:548416cbf500ebf2f74499fd2e9355a1ac624966b35ec40a7d891a80a85c329a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YYC64CM3O66QDUDIJAHUDQZLYH/bundle.json","state_url":"https://pith.science/pith/YYC64CM3O66QDUDIJAHUDQZLYH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YYC64CM3O66QDUDIJAHUDQZLYH/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":"2026-08-04T18:09:58Z","links":{"resolver":"https://pith.science/pith/YYC64CM3O66QDUDIJAHUDQZLYH","bundle":"https://pith.science/pith/YYC64CM3O66QDUDIJAHUDQZLYH/bundle.json","state":"https://pith.science/pith/YYC64CM3O66QDUDIJAHUDQZLYH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YYC64CM3O66QDUDIJAHUDQZLYH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:YYC64CM3O66QDUDIJAHUDQZLYH","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":"628d3fe15cb3038042debcae550634f773cfa2650ffa22f47a2dcf94dbfe5502","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-08-07T12:07:08Z","title_canon_sha256":"dd9f3a93cf18b04577e4235ab0f075b8c041f502c12bb2dc6c47e8a0786a4d35"},"schema_version":"1.0","source":{"id":"2308.03512","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.03512","created_at":"2026-07-05T06:38:17Z"},{"alias_kind":"arxiv_version","alias_value":"2308.03512v1","created_at":"2026-07-05T06:38:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.03512","created_at":"2026-07-05T06:38:17Z"},{"alias_kind":"pith_short_12","alias_value":"YYC64CM3O66Q","created_at":"2026-07-05T06:38:17Z"},{"alias_kind":"pith_short_16","alias_value":"YYC64CM3O66QDUDI","created_at":"2026-07-05T06:38:17Z"},{"alias_kind":"pith_short_8","alias_value":"YYC64CM3","created_at":"2026-07-05T06:38:17Z"}],"graph_snapshots":[{"event_id":"sha256:548416cbf500ebf2f74499fd2e9355a1ac624966b35ec40a7d891a80a85c329a","target":"graph","created_at":"2026-07-05T06:38:17Z","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/2308.03512/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the low-frequency spectral emission from a network of superconducting cosmic string loops in hopes of explaining the observed radio synchrotron background. After considering constraints from a variety of astrophysical and cosmological measurements, we identify a best-fit solution with string tension $G\\mu \\simeq 6.5 \\times 10^{-12}$ and current $\\mathcal{I} \\simeq 2.5 \\times 10^6$ GeV. This model yields a convincing fit to the data and may be testable in the near future by spectral distortion (TMS, BISOU) and 21 cm experiments (HERA, SKA, REACH). We also find that soft photon he","authors_text":"Bryce Cyr, Jens Chluba, Sandeep Kumar Acharya","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-08-07T12:07:08Z","title":"A cosmic string solution to the radio synchrotron background"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.03512","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":"sha256:6eeeaf19fc18c79467c7419e6abaf6d4e83e31ad8b2d9265669abcad6d915411","target":"record","created_at":"2026-07-05T06:38:17Z","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":"628d3fe15cb3038042debcae550634f773cfa2650ffa22f47a2dcf94dbfe5502","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-08-07T12:07:08Z","title_canon_sha256":"dd9f3a93cf18b04577e4235ab0f075b8c041f502c12bb2dc6c47e8a0786a4d35"},"schema_version":"1.0","source":{"id":"2308.03512","kind":"arxiv","version":1}},"canonical_sha256":"c605ee099b77bd01d068480f41c32bc1d0649d38d84699604f1c12d2b6f99723","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c605ee099b77bd01d068480f41c32bc1d0649d38d84699604f1c12d2b6f99723","first_computed_at":"2026-07-05T06:38:17.966097Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:38:17.966097Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SPXco/MfFRcWYiFbjA/regyMRXPhrdYQTBUd73ZPZleYOUmma/WfMEDwI4VFvEe9LS0m7if3ZRcRJDzJTQJ8Dg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:38:17.966526Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.03512","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6eeeaf19fc18c79467c7419e6abaf6d4e83e31ad8b2d9265669abcad6d915411","sha256:548416cbf500ebf2f74499fd2e9355a1ac624966b35ec40a7d891a80a85c329a"],"state_sha256":"ebf9f5592f1f1068e00f2ad610e6fe55c4cb4b833178590abbcc6489f9a0d6cc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1VjXyC3HtYWj/fff6w5AcqNuvEdvYd3bV8YJnccV42FRy6DhcJIXgJsEpbti5fez5SkBScie7tpjtClOAdHTCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T18:09:58.337416Z","bundle_sha256":"c9c727e2f530125497a6f3b4cc1a1a730181dc0ac61ddbe150a0f800dfe09395"}}