{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:2VI3EQLP4TADAZFABGKBQULS3E","short_pith_number":"pith:2VI3EQLP","canonical_record":{"source":{"id":"2106.12988","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-06-22T21:37:02Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"f10dc0ee770660d9dcf688536e2644bd6b5c7df4ebc81cd72bd4d3cab0d62773","abstract_canon_sha256":"a210a17e7d2fca504c01c3d6f0a4e4e93bad8719567b9df765d9b99ab9b75ec3"},"schema_version":"1.0"},"canonical_sha256":"d551b2416fe4c03064a00994185172d90730ecb1c20a140d2722f7ff35e52377","source":{"kind":"arxiv","id":"2106.12988","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.12988","created_at":"2026-07-05T02:52:08Z"},{"alias_kind":"arxiv_version","alias_value":"2106.12988v1","created_at":"2026-07-05T02:52:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.12988","created_at":"2026-07-05T02:52:08Z"},{"alias_kind":"pith_short_12","alias_value":"2VI3EQLP4TAD","created_at":"2026-07-05T02:52:08Z"},{"alias_kind":"pith_short_16","alias_value":"2VI3EQLP4TADAZFA","created_at":"2026-07-05T02:52:08Z"},{"alias_kind":"pith_short_8","alias_value":"2VI3EQLP","created_at":"2026-07-05T02:52:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:2VI3EQLP4TADAZFABGKBQULS3E","target":"record","payload":{"canonical_record":{"source":{"id":"2106.12988","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-06-22T21:37:02Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"f10dc0ee770660d9dcf688536e2644bd6b5c7df4ebc81cd72bd4d3cab0d62773","abstract_canon_sha256":"a210a17e7d2fca504c01c3d6f0a4e4e93bad8719567b9df765d9b99ab9b75ec3"},"schema_version":"1.0"},"canonical_sha256":"d551b2416fe4c03064a00994185172d90730ecb1c20a140d2722f7ff35e52377","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:52:08.444680Z","signature_b64":"aKM3K15ueRRn+MVIcEf5ewd1neMu/1TesX5JB5lx2Jhu8zNuxvavuCFpKcAE+Xl9lO6DIXMdm+lMxPmHEx+7BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d551b2416fe4c03064a00994185172d90730ecb1c20a140d2722f7ff35e52377","last_reissued_at":"2026-07-05T02:52:08.444276Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:52:08.444276Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.12988","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":"2026-07-05T02:52:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p05EUnNwMlbhrM/ZnACs1RbeQHz+FDov05u4vVtE8YuKK+eIJid6EuK8TBWHySgW0/VrH0yIMwCKv8H4iyoRAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T05:01:34.153536Z"},"content_sha256":"327a45e392b597239a3f8f865c365d5db1041d2d4b15ec8a6040d057576996bf","schema_version":"1.0","event_id":"sha256:327a45e392b597239a3f8f865c365d5db1041d2d4b15ec8a6040d057576996bf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:2VI3EQLP4TADAZFABGKBQULS3E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhanced D-D Fusion Rates when the Coulomb Barrier Is Lowered by Electrons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"physics.plasm-ph","authors_text":"Alexander Gunn, Alfred Y. Wong, Allan X. Chen, Chun-Ching Shih, Mason J. Guffey","submitted_at":"2021-06-22T21:37:02Z","abstract_excerpt":"A profusion of unbound, low-energy electrons creates a local electric field that reduces Coulomb potential and increases quantum tunneling probability for pairs of nuclei. Neutral beam-target experiments on deuterium-deuterium fusion reactions, observed with neutron detectors, show percentage increases in fusion products are consistent with electron-screening predictions from Schrodinger wave mechanics. Experiments performed confirm that observed fusion rate enhancement with a negatively biased target is primarily due to changes to the fusion cross section, rather than simply acceleration due "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.12988","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/2106.12988/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":"2026-07-05T02:52:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+B07UQgjWjC4wRwQaYx73xB9Fa1dugPdTUs2Xo1GJOHEMe1LHrOr60ty+rl/BGXslwUU03nPrHKnS93AWlR5CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T05:01:34.153913Z"},"content_sha256":"30364ea1894c5140af7888b27c816092a7780af1d1c6a1c8875da17d6fd4213a","schema_version":"1.0","event_id":"sha256:30364ea1894c5140af7888b27c816092a7780af1d1c6a1c8875da17d6fd4213a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2VI3EQLP4TADAZFABGKBQULS3E/bundle.json","state_url":"https://pith.science/pith/2VI3EQLP4TADAZFABGKBQULS3E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2VI3EQLP4TADAZFABGKBQULS3E/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":"2026-07-09T05:01:34Z","links":{"resolver":"https://pith.science/pith/2VI3EQLP4TADAZFABGKBQULS3E","bundle":"https://pith.science/pith/2VI3EQLP4TADAZFABGKBQULS3E/bundle.json","state":"https://pith.science/pith/2VI3EQLP4TADAZFABGKBQULS3E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2VI3EQLP4TADAZFABGKBQULS3E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:2VI3EQLP4TADAZFABGKBQULS3E","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":"a210a17e7d2fca504c01c3d6f0a4e4e93bad8719567b9df765d9b99ab9b75ec3","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-06-22T21:37:02Z","title_canon_sha256":"f10dc0ee770660d9dcf688536e2644bd6b5c7df4ebc81cd72bd4d3cab0d62773"},"schema_version":"1.0","source":{"id":"2106.12988","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.12988","created_at":"2026-07-05T02:52:08Z"},{"alias_kind":"arxiv_version","alias_value":"2106.12988v1","created_at":"2026-07-05T02:52:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.12988","created_at":"2026-07-05T02:52:08Z"},{"alias_kind":"pith_short_12","alias_value":"2VI3EQLP4TAD","created_at":"2026-07-05T02:52:08Z"},{"alias_kind":"pith_short_16","alias_value":"2VI3EQLP4TADAZFA","created_at":"2026-07-05T02:52:08Z"},{"alias_kind":"pith_short_8","alias_value":"2VI3EQLP","created_at":"2026-07-05T02:52:08Z"}],"graph_snapshots":[{"event_id":"sha256:30364ea1894c5140af7888b27c816092a7780af1d1c6a1c8875da17d6fd4213a","target":"graph","created_at":"2026-07-05T02:52:08Z","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/2106.12988/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A profusion of unbound, low-energy electrons creates a local electric field that reduces Coulomb potential and increases quantum tunneling probability for pairs of nuclei. Neutral beam-target experiments on deuterium-deuterium fusion reactions, observed with neutron detectors, show percentage increases in fusion products are consistent with electron-screening predictions from Schrodinger wave mechanics. Experiments performed confirm that observed fusion rate enhancement with a negatively biased target is primarily due to changes to the fusion cross section, rather than simply acceleration due ","authors_text":"Alexander Gunn, Alfred Y. Wong, Allan X. Chen, Chun-Ching Shih, Mason J. Guffey","cross_cats":["nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-06-22T21:37:02Z","title":"Enhanced D-D Fusion Rates when the Coulomb Barrier Is Lowered by Electrons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.12988","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":"sha256:327a45e392b597239a3f8f865c365d5db1041d2d4b15ec8a6040d057576996bf","target":"record","created_at":"2026-07-05T02:52:08Z","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":"a210a17e7d2fca504c01c3d6f0a4e4e93bad8719567b9df765d9b99ab9b75ec3","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2021-06-22T21:37:02Z","title_canon_sha256":"f10dc0ee770660d9dcf688536e2644bd6b5c7df4ebc81cd72bd4d3cab0d62773"},"schema_version":"1.0","source":{"id":"2106.12988","kind":"arxiv","version":1}},"canonical_sha256":"d551b2416fe4c03064a00994185172d90730ecb1c20a140d2722f7ff35e52377","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d551b2416fe4c03064a00994185172d90730ecb1c20a140d2722f7ff35e52377","first_computed_at":"2026-07-05T02:52:08.444276Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:52:08.444276Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aKM3K15ueRRn+MVIcEf5ewd1neMu/1TesX5JB5lx2Jhu8zNuxvavuCFpKcAE+Xl9lO6DIXMdm+lMxPmHEx+7BA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:52:08.444680Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.12988","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:327a45e392b597239a3f8f865c365d5db1041d2d4b15ec8a6040d057576996bf","sha256:30364ea1894c5140af7888b27c816092a7780af1d1c6a1c8875da17d6fd4213a"],"state_sha256":"a8b442d2fece14a8aad490110d9f5b943b6a42c86d13327a5e85c912fb10b139"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pSbpysJGWy5kKTyISD5Fv15SVmzU95J65BkMnt4NEpNdRHNy0P3Nt5MXgL4vcn4pQ4a7lRIk13fjQTm2WELaBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-09T05:01:34.155805Z","bundle_sha256":"4ab8d723a7f2e6ea6a998baa23764c4ac8edb15805d9a05be094fc9b5f01f74f"}}