{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:U6EZOCFPCSWSXLP2MU7Y6WES3X","short_pith_number":"pith:U6EZOCFP","canonical_record":{"source":{"id":"2507.12386","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2025-07-16T16:32:51Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"fd6619fe9eed16545afa4d3773d1f5278d8b1988af6e9c9af730e96a402ea223","abstract_canon_sha256":"251421617a8df1a143b42b0da8ee5ff66f4996ce4e5f03334b5003fe46c3d4d9"},"schema_version":"1.0"},"canonical_sha256":"a7899708af14ad2badfa653f8f5892ddc2fb279fe79ff84402ae4f4be79c1e8e","source":{"kind":"arxiv","id":"2507.12386","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.12386","created_at":"2026-07-05T11:38:19Z"},{"alias_kind":"arxiv_version","alias_value":"2507.12386v1","created_at":"2026-07-05T11:38:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.12386","created_at":"2026-07-05T11:38:19Z"},{"alias_kind":"pith_short_12","alias_value":"U6EZOCFPCSWS","created_at":"2026-07-05T11:38:19Z"},{"alias_kind":"pith_short_16","alias_value":"U6EZOCFPCSWSXLP2","created_at":"2026-07-05T11:38:19Z"},{"alias_kind":"pith_short_8","alias_value":"U6EZOCFP","created_at":"2026-07-05T11:38:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:U6EZOCFPCSWSXLP2MU7Y6WES3X","target":"record","payload":{"canonical_record":{"source":{"id":"2507.12386","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2025-07-16T16:32:51Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"fd6619fe9eed16545afa4d3773d1f5278d8b1988af6e9c9af730e96a402ea223","abstract_canon_sha256":"251421617a8df1a143b42b0da8ee5ff66f4996ce4e5f03334b5003fe46c3d4d9"},"schema_version":"1.0"},"canonical_sha256":"a7899708af14ad2badfa653f8f5892ddc2fb279fe79ff84402ae4f4be79c1e8e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:38:19.508625Z","signature_b64":"oqU7Vj1RFG8MTxC0CBdC2YB4XNoX6hbh/w0qTgRmwl4OVLH+z5kli1W8lWZ36+xMB5wg3JvjQJGjLlDQLAi+Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7899708af14ad2badfa653f8f5892ddc2fb279fe79ff84402ae4f4be79c1e8e","last_reissued_at":"2026-07-05T11:38:19.508060Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:38:19.508060Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.12386","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":"2026-07-05T11:38:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZeuStQMPUVZH/YGIcsEz729c+GG2NOAOr9jGQFQE7/Bbg0Z4ZnOON7/ztvUy4EW1uP6VmUbBF6GXo9tpP6NCAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T10:05:58.210385Z"},"content_sha256":"d84be6708a86e926284932dd21202976b73745a119adffd0ec92d3f012ed1417","schema_version":"1.0","event_id":"sha256:d84be6708a86e926284932dd21202976b73745a119adffd0ec92d3f012ed1417"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:U6EZOCFPCSWSXLP2MU7Y6WES3X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Do Cosmic String Segments Emit Gravitational Waves?","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"hep-ph","authors_text":"Akifumi Chitose, Masahiro Ibe, Satoshi Shirai, Shunsuke Neda","submitted_at":"2025-07-16T16:32:51Z","abstract_excerpt":"Cosmic strings are predicted in various extensions of the Standard Model, including grand unified theories. Depending on the symmetry-breaking pattern, they can be either topologically stable or metastable. Intriguingly, metastable strings have been proposed as a possible origin of the gravitational wave (GW) background observed by recent pulsar timing array experiments. When metastable strings decay, they fragment into segments with monopoles and antimonopoles attached at their endpoints. The monopole and antimonopole are strongly pulled by the string tension. Violent oscillations of these se"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.12386","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/2507.12386/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":"2026-07-05T11:38:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ffxNMX6xSrahI+2afLXh9nwVHRHSdgbiUaRGJ1+169slbNB4ZVakI8CxiGVAhZ81l7qZ5EFe6zKe25CrV85qAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T10:05:58.210925Z"},"content_sha256":"24a32e00c2b68029f872a464596de3642d4caba19284cefdfc1d783ad6ed6097","schema_version":"1.0","event_id":"sha256:24a32e00c2b68029f872a464596de3642d4caba19284cefdfc1d783ad6ed6097"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U6EZOCFPCSWSXLP2MU7Y6WES3X/bundle.json","state_url":"https://pith.science/pith/U6EZOCFPCSWSXLP2MU7Y6WES3X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U6EZOCFPCSWSXLP2MU7Y6WES3X/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":"2026-08-07T10:05:58Z","links":{"resolver":"https://pith.science/pith/U6EZOCFPCSWSXLP2MU7Y6WES3X","bundle":"https://pith.science/pith/U6EZOCFPCSWSXLP2MU7Y6WES3X/bundle.json","state":"https://pith.science/pith/U6EZOCFPCSWSXLP2MU7Y6WES3X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U6EZOCFPCSWSXLP2MU7Y6WES3X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:U6EZOCFPCSWSXLP2MU7Y6WES3X","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":"251421617a8df1a143b42b0da8ee5ff66f4996ce4e5f03334b5003fe46c3d4d9","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2025-07-16T16:32:51Z","title_canon_sha256":"fd6619fe9eed16545afa4d3773d1f5278d8b1988af6e9c9af730e96a402ea223"},"schema_version":"1.0","source":{"id":"2507.12386","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.12386","created_at":"2026-07-05T11:38:19Z"},{"alias_kind":"arxiv_version","alias_value":"2507.12386v1","created_at":"2026-07-05T11:38:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.12386","created_at":"2026-07-05T11:38:19Z"},{"alias_kind":"pith_short_12","alias_value":"U6EZOCFPCSWS","created_at":"2026-07-05T11:38:19Z"},{"alias_kind":"pith_short_16","alias_value":"U6EZOCFPCSWSXLP2","created_at":"2026-07-05T11:38:19Z"},{"alias_kind":"pith_short_8","alias_value":"U6EZOCFP","created_at":"2026-07-05T11:38:19Z"}],"graph_snapshots":[{"event_id":"sha256:24a32e00c2b68029f872a464596de3642d4caba19284cefdfc1d783ad6ed6097","target":"graph","created_at":"2026-07-05T11:38:19Z","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/2507.12386/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Cosmic strings are predicted in various extensions of the Standard Model, including grand unified theories. Depending on the symmetry-breaking pattern, they can be either topologically stable or metastable. Intriguingly, metastable strings have been proposed as a possible origin of the gravitational wave (GW) background observed by recent pulsar timing array experiments. When metastable strings decay, they fragment into segments with monopoles and antimonopoles attached at their endpoints. The monopole and antimonopole are strongly pulled by the string tension. Violent oscillations of these se","authors_text":"Akifumi Chitose, Masahiro Ibe, Satoshi Shirai, Shunsuke Neda","cross_cats":["astro-ph.CO"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2025-07-16T16:32:51Z","title":"Do Cosmic String Segments Emit Gravitational Waves?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.12386","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:d84be6708a86e926284932dd21202976b73745a119adffd0ec92d3f012ed1417","target":"record","created_at":"2026-07-05T11:38:19Z","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":"251421617a8df1a143b42b0da8ee5ff66f4996ce4e5f03334b5003fe46c3d4d9","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2025-07-16T16:32:51Z","title_canon_sha256":"fd6619fe9eed16545afa4d3773d1f5278d8b1988af6e9c9af730e96a402ea223"},"schema_version":"1.0","source":{"id":"2507.12386","kind":"arxiv","version":1}},"canonical_sha256":"a7899708af14ad2badfa653f8f5892ddc2fb279fe79ff84402ae4f4be79c1e8e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7899708af14ad2badfa653f8f5892ddc2fb279fe79ff84402ae4f4be79c1e8e","first_computed_at":"2026-07-05T11:38:19.508060Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:38:19.508060Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oqU7Vj1RFG8MTxC0CBdC2YB4XNoX6hbh/w0qTgRmwl4OVLH+z5kli1W8lWZ36+xMB5wg3JvjQJGjLlDQLAi+Cw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:38:19.508625Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.12386","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d84be6708a86e926284932dd21202976b73745a119adffd0ec92d3f012ed1417","sha256:24a32e00c2b68029f872a464596de3642d4caba19284cefdfc1d783ad6ed6097"],"state_sha256":"6da9d6300cbe03b00bc700722999219a448fa6e4ab3d15432a05ba7efb3f552d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sY6DFKmQxbwWXH/jlw0SVmfqMQ9O+ul5/0qom1eD7q+xAqyJbxLZPCeTG5CTyqLQjrWSlTCnlJqB46BbS7FzAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T10:05:58.215433Z","bundle_sha256":"6e5e859bb40e4fad6fa32da1474bd47b8bfbea38fb5cf7b4ce5ccc5fbd3a887f"}}