{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:DD5MU6HYWCTYG6HB2ZE6KHCJQH","short_pith_number":"pith:DD5MU6HY","canonical_record":{"source":{"id":"1305.1688","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-05-08T01:27:30Z","cross_cats_sorted":["cond-mat.supr-con","nucl-ex"],"title_canon_sha256":"11c7970fb42a2dc7a7fb74cc7de2c8caf652be01ea53331193ade1d912eadcb4","abstract_canon_sha256":"6bd2cc946a8ac0bae76b03e6c3de3eaf960e16d35d8dd7be8e151324a0a72320"},"schema_version":"1.0"},"canonical_sha256":"18faca78f8b0a78378e1d649e51c4981d26b5bd00f30e68ccb9bafc9eb4b2d61","source":{"kind":"arxiv","id":"1305.1688","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.1688","created_at":"2026-05-18T03:26:11Z"},{"alias_kind":"arxiv_version","alias_value":"1305.1688v1","created_at":"2026-05-18T03:26:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.1688","created_at":"2026-05-18T03:26:11Z"},{"alias_kind":"pith_short_12","alias_value":"DD5MU6HYWCTY","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"DD5MU6HYWCTYG6HB","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"DD5MU6HY","created_at":"2026-05-18T12:27:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:DD5MU6HYWCTYG6HB2ZE6KHCJQH","target":"record","payload":{"canonical_record":{"source":{"id":"1305.1688","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-05-08T01:27:30Z","cross_cats_sorted":["cond-mat.supr-con","nucl-ex"],"title_canon_sha256":"11c7970fb42a2dc7a7fb74cc7de2c8caf652be01ea53331193ade1d912eadcb4","abstract_canon_sha256":"6bd2cc946a8ac0bae76b03e6c3de3eaf960e16d35d8dd7be8e151324a0a72320"},"schema_version":"1.0"},"canonical_sha256":"18faca78f8b0a78378e1d649e51c4981d26b5bd00f30e68ccb9bafc9eb4b2d61","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:26:11.557046Z","signature_b64":"CU/G+2fKTf15GZPuHOO9MlC55SCZrYfsRkSb6hjGSPj6JdsQqd2uD0SXdUUeFG4YEHCjK4MmnSXUNhU2t2HiAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"18faca78f8b0a78378e1d649e51c4981d26b5bd00f30e68ccb9bafc9eb4b2d61","last_reissued_at":"2026-05-18T03:26:11.556392Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:26:11.556392Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.1688","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":"2026-05-18T03:26:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HbtsOIi4d7M5Ep4qgbu2Bvnvd3Ow46T4Cw3nxwdS3zAiOzoBsL0SBW8n1Pn3irTbK3xdhsVenTfi+s/6x5QuBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T03:07:06.621727Z"},"content_sha256":"cc0463bd871e481eeeba5cbd01c15f1e9e246ac55719d31961eb0ea981987421","schema_version":"1.0","event_id":"sha256:cc0463bd871e481eeeba5cbd01c15f1e9e246ac55719d31961eb0ea981987421"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:DD5MU6HYWCTYG6HB2ZE6KHCJQH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Comparison and Analysis of Twist Pitch Length Test Methods for ITER Nb3Sn and NbTi Strands","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con","nucl-ex"],"primary_cat":"physics.acc-ph","authors_text":"Bo Liu, Chao Chen, Fang Liu, Feng Long, Huajun Liu, Yu Wu","submitted_at":"2013-05-08T01:27:30Z","abstract_excerpt":"A twisted multifilamentary structure is needed for Nb3Sn and NbTi strands to be used in the International Thermonuclear Experimental Reactor (ITER) magnets. As important parameters for the superconducting strands design and production, the twist pitch length and direction of strands must meet the requirements according to ITER Procurement Arrangement (PA) and this must be verified. The technical requirements are 15mm+/-2mm for twist pitch length and right hand twist for direction. The strand twist pitch and the twist direction can be measured on straight sections of strand, which is recognized"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.1688","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":""},"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":"2026-05-18T03:26:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mF8dejkiPZyDZ/tAKZbIqtWwqQw6ZcJzvwP3dfQrKTjKhuOXxiZmvg/7fNpAXrh2P49cqdrnhCwyM3zPHrzxBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T03:07:06.622089Z"},"content_sha256":"13c7572332ca033d91ddead6915860a04c4b60ba31a6e7410348baa30da6362b","schema_version":"1.0","event_id":"sha256:13c7572332ca033d91ddead6915860a04c4b60ba31a6e7410348baa30da6362b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DD5MU6HYWCTYG6HB2ZE6KHCJQH/bundle.json","state_url":"https://pith.science/pith/DD5MU6HYWCTYG6HB2ZE6KHCJQH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DD5MU6HYWCTYG6HB2ZE6KHCJQH/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":"2026-06-01T03:07:06Z","links":{"resolver":"https://pith.science/pith/DD5MU6HYWCTYG6HB2ZE6KHCJQH","bundle":"https://pith.science/pith/DD5MU6HYWCTYG6HB2ZE6KHCJQH/bundle.json","state":"https://pith.science/pith/DD5MU6HYWCTYG6HB2ZE6KHCJQH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DD5MU6HYWCTYG6HB2ZE6KHCJQH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:DD5MU6HYWCTYG6HB2ZE6KHCJQH","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":"6bd2cc946a8ac0bae76b03e6c3de3eaf960e16d35d8dd7be8e151324a0a72320","cross_cats_sorted":["cond-mat.supr-con","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-05-08T01:27:30Z","title_canon_sha256":"11c7970fb42a2dc7a7fb74cc7de2c8caf652be01ea53331193ade1d912eadcb4"},"schema_version":"1.0","source":{"id":"1305.1688","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.1688","created_at":"2026-05-18T03:26:11Z"},{"alias_kind":"arxiv_version","alias_value":"1305.1688v1","created_at":"2026-05-18T03:26:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.1688","created_at":"2026-05-18T03:26:11Z"},{"alias_kind":"pith_short_12","alias_value":"DD5MU6HYWCTY","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"DD5MU6HYWCTYG6HB","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"DD5MU6HY","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:13c7572332ca033d91ddead6915860a04c4b60ba31a6e7410348baa30da6362b","target":"graph","created_at":"2026-05-18T03:26:11Z","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":"A twisted multifilamentary structure is needed for Nb3Sn and NbTi strands to be used in the International Thermonuclear Experimental Reactor (ITER) magnets. As important parameters for the superconducting strands design and production, the twist pitch length and direction of strands must meet the requirements according to ITER Procurement Arrangement (PA) and this must be verified. The technical requirements are 15mm+/-2mm for twist pitch length and right hand twist for direction. The strand twist pitch and the twist direction can be measured on straight sections of strand, which is recognized","authors_text":"Bo Liu, Chao Chen, Fang Liu, Feng Long, Huajun Liu, Yu Wu","cross_cats":["cond-mat.supr-con","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-05-08T01:27:30Z","title":"Comparison and Analysis of Twist Pitch Length Test Methods for ITER Nb3Sn and NbTi Strands"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.1688","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:cc0463bd871e481eeeba5cbd01c15f1e9e246ac55719d31961eb0ea981987421","target":"record","created_at":"2026-05-18T03:26:11Z","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":"6bd2cc946a8ac0bae76b03e6c3de3eaf960e16d35d8dd7be8e151324a0a72320","cross_cats_sorted":["cond-mat.supr-con","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-05-08T01:27:30Z","title_canon_sha256":"11c7970fb42a2dc7a7fb74cc7de2c8caf652be01ea53331193ade1d912eadcb4"},"schema_version":"1.0","source":{"id":"1305.1688","kind":"arxiv","version":1}},"canonical_sha256":"18faca78f8b0a78378e1d649e51c4981d26b5bd00f30e68ccb9bafc9eb4b2d61","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18faca78f8b0a78378e1d649e51c4981d26b5bd00f30e68ccb9bafc9eb4b2d61","first_computed_at":"2026-05-18T03:26:11.556392Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:26:11.556392Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CU/G+2fKTf15GZPuHOO9MlC55SCZrYfsRkSb6hjGSPj6JdsQqd2uD0SXdUUeFG4YEHCjK4MmnSXUNhU2t2HiAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:26:11.557046Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.1688","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cc0463bd871e481eeeba5cbd01c15f1e9e246ac55719d31961eb0ea981987421","sha256:13c7572332ca033d91ddead6915860a04c4b60ba31a6e7410348baa30da6362b"],"state_sha256":"78cfbf50b31ba51e52900474241f150ce8d08c760ad281f9f0976c1797a856e6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MQCi15uFKEqqkSeXeQGfJ+7E1O53WmRW4w6pa43aLLz/ULmcnvycS5TTY/S6n2WoNHr3eWChCXFAnXcnDEbKBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T03:07:06.624485Z","bundle_sha256":"82bf4b07c5fef91593fbd9cb29b1593b7a970a38fcf66f6cde34b095391a7c9c"}}